Northern Lights Iceland: The Guide Built on 15 Years of Chasing the Aurora

Northern Lights Iceland: The Guide Built on 15 Years of Chasing the Aurora

Most people step outside on their first aurora night, look up, see a faint smear of pale light, and think they got unlucky. They checked the KP index, it said 3, the forecast looked good. So what went wrong? Almost certainly two things: the Bz had not switched on yet, and their eyes were not ready. Neither of these is explained in any standard travel guide, which is why most people leave Iceland having seen a fraction of what was actually visible to them.

This guide fixes that. It covers the forecast numbers that genuinely matter, how to read them in real time, where to go, how to prepare your body and your camera, and the eye adaptation technique that changes everything about the naked-eye experience. The aurora cannot be guaranteed. But you can stack the odds heavily in your favour if you understand what you are actually dealing with.

Written by Gunnar Steinn, a professional aurora and night sky photographer based in Iceland with over 15 years of experience. In 2010, Gunnar designed and built one of the world's first motorized timelapse dollies capable of tracking the northern lights in motion, a piece of equipment he spent the following decade perfecting while shooting aurora almost every single night. His northern lights and night sky images have reached audiences worldwide, built a social media following of over 200,000 people, and appeared on Icelandic products from chocolate bars to national campaigns. His footage ran as the main visual identity of RUV, Iceland's national broadcaster, for three years. His work has been featured in Iceland's major media outlets. He is also the main architect and advisor behind the team that built williseeaurora.com, a real-time aurora forecast tool built specifically for Iceland. What follows is not travel writing. It is over 15 years of nightly obsession compressed into the things that actually matter.

The Three Numbers That Actually Matter

The KP Index: Useful but Overrated

The KP index runs from 0 to 9 and measures global geomagnetic activity. It is the number most aurora apps lead with, and it has its place. A KP of 5 or higher signals a geomagnetic storm and often brings dramatic, full-sky displays visible across a wide area.

But here is what those apps usually fail to mention: because of Iceland's position at very high geomagnetic latitude, the aurora oval passes directly over the country. A KP of just 1 or 2, values that would produce nothing visible in central Europe, can produce a genuine aurora display in Iceland when other conditions line up. You do not need a storm forecast to have a great night here. The country is that far north.

The bigger limitation of the KP index is structural. It is a three-hour average of geomagnetic activity. By the time a high KP is reported, the event driving it is already well underway. It tells you what has been happening, not what is about to happen. And it tells you nothing about the most critical variable in short-term aurora forecasting.

Bz: The One Number That Actually Controls Everything

Stop here. This is the variable that determines whether you see aurora tonight or go home disappointed. Not the KP index. Not the solar wind speed. Bz.

Bz is the north-south component of the interplanetary magnetic field, the invisible magnetic field carried by the solar wind from the sun. When Bz points southward (a negative value), it connects with Earth's northward magnetic field in a process called magnetic reconnection. This opens gaps in the magnetosphere and allows charged solar wind particles to pour into the upper atmosphere, exciting the gases there and producing the aurora.

When Bz points northward (a positive value), the magnetosphere stays largely closed. The solar wind is still there. The KP index might look promising. Everything might seem lined up. But nothing is getting through, and you will see nothing in the sky.

You could have a KP of 5, perfect cloud cover, complete darkness, and a stunning location. Without Bz going south, you are watching a blank sky. With Bz strongly south, even a KP of 1 can produce a display in Iceland that stops you in your tracks.

Bz is the switch. Everything else is the wiring.

The critical thing to understand about Bz is that it cannot be predicted in advance. There is no model, no app, no satellite that can tell you what Bz will be doing in a few hours. You have to monitor it live and be ready to move when it switches.

Bz can flip from north to south in seconds. A night that looked completely dead can erupt into a full-sky display within minutes of that flip. The people who catch the best aurora are the ones who stay outside and keep watching, not the ones who checked the forecast once and went inside.

Solar Wind Speed and Density

Solar wind speed (measured in kilometres per second) and particle density (measured in protons per cubic centimetre) are the supporting cast. Higher speed and density mean more energy hitting the magnetosphere. Typical solar wind runs around 400 km/s. During active periods it can reach 600 to 800 km/s or beyond. Combined with a southward Bz, elevated speed and density amplify the display significantly.

Think of it this way: Bz turning south is the ignition. Solar wind speed and density are the fuel load. You need both.

How to Use the Forecast: The Real-Time Workflow

Because Bz cannot be predicted in advance, checking a forecast once before heading out and then passively waiting is the wrong approach. The workflow for a serious aurora hunt is different.

First, use williseeaurora.com to assess overall conditions and cloud cover across Iceland. The site combines real-time NOAA space weather data, local cloud cover, and darkness levels into a single score, so you can see at a glance whether the night has potential and which parts of Iceland are likely to have clear sky. The aurora forecast for Iceland also gives you an overview of conditions night by night.

Second, once you have identified a good spot based on the cloud forecast, get into position and monitor the Bz value live. This is the thing you are waiting for. Everything else can look perfect, but until Bz goes south, nothing will appear.

Third, be patient in a way most visitors are not. You are waiting for a specific space weather condition to align. Some nights it never does. On others it fires up suddenly, runs for 20 minutes, and quiets again. The people who catch the best displays are the ones who stay out long enough and keep monitoring rather than deciding it is not happening and going back inside.

Why Aurora Photos Look Nothing Like What You Saw: Dark Adaptation

This is the most overlooked factor in the gap between what visitors expect and what they actually see, and it is the reason experienced aurora hunters can stand in the same field as a tourist and see a completely different sky.

Here is the question almost everyone asks at some point: why do the photos on Instagram look nothing like what I saw with my eyes? The aurora in those images is vivid, structured, electric green or pink, filling the sky. What you saw was a faint pale smear and you are wondering if the photos are fake, filtered, or taken on some exceptional night you were unlucky enough to miss.

They are not fake. The camera is doing something your eyes cannot physically do: collecting light over several seconds in a single frame. A 10-second exposure gathers far more light than your eye can take in at any one moment, which is why even a modest display looks vivid and structured in a photograph. Photographers do often add contrast and saturation in editing, but the raw material is real. And the night you were standing in was almost certainly the same quality as the one in the photograph. Dark-adapted eyes are your version of that edit. Preparing them properly is like adding contrast and saturation to the experience itself.

Your eyes have two types of photoreceptors. Cones handle colour and detail in good light. Rods handle low-light vision. Rods contain a pigment called rhodopsin, which bleaches in bright light and needs time to regenerate in darkness. This process is called dark adaptation, and it takes a minimum of 20 to 30 minutes to reach meaningful levels, with full adaptation taking 40 minutes or more.

When you step outside from a lit room or a car with the dashboard on and immediately look for the aurora, your rods are barely functional. You are looking at the night sky with your daytime vision system, which was designed for very different conditions. Think of it like walking from a sunny day into a dark room. At first you can barely see anything. After a few minutes shapes begin to appear. After ten minutes you can see clearly. The sky works exactly the same way.

The problem is what breaks adaptation. The answer is: any light at all, even a very dim one.

Checking your phone screen. The dashboard when you get back in the car to warm up. Someone nearby shining a torch. Any of these can set your adaptation back significantly, forcing you to start the 30-minute clock again.

There is one more threat that catches people off guard: another car arriving at your location with full headlights. You have a simple weapon for this, and it costs nothing to use. Your eyelids. The moment headlights swing toward you, close your eyes and look away until they have parked and turned off the lights. Your eyelids block enough light to prevent the bleaching that would set you back. The instant the lights are off, open your eyes again. If you acted quickly enough, your adaptation is intact.

The solution used by professional astronomers, aurora photographers, and military operators working in darkness is red light. Rod cells are far less sensitive to long-wavelength red light than to white or blue light. A red-filtered headlamp or torch lets you navigate, check your camera settings, or read a map without damaging your adaptation. A red screen mode on your phone does the same for checking the forecast.

How seriously should you take this? Early in my career I tore the dashboard of my old Land Cruiser completely apart and replaced every single light bulb in it with a red one. Every gauge, every indicator, every interior light. All red. Because even a glance at a white dashboard on the way to a location was enough to cost me 20 minutes of adaptation time I could not get back. That is how much it matters.

The practical protocol: get into position, eliminate all white light sources, give yourself a minimum of 30 uninterrupted minutes in genuine darkness, and use red light only if you need to see anything during that time. After full adaptation, faint aurora that seemed invisible becomes clearly structured. Strong aurora becomes vivid and fast-moving in a way you simply cannot see with unadapted eyes. The Milky Way, on a clear night, resolves into a broad luminous band you can trace across the sky with your finger.

Most visitors never experience this because they never stay dark long enough.

There is one trick that guarantees full dark adaptation and works particularly well for couples or anyone in a camper or rental car. Once you have found your spot and killed every light in the vehicle, put on a sleep eye mask. Get comfortable. Put on some music or an audiobook. Just sit with it for 30 to 40 minutes. When you pull the mask off and step outside into genuine darkness with no phone, no dashboard, nothing, the adaptation is complete before you even look up. What happens next is difficult to describe to someone who has not experienced it. The sky you walk into is not the sky most tourists see. It is the one in the photographs, alive and in front of you.

Staying Warm Enough to Stay Out Long Enough

Cold and discomfort are what push people back inside too early, which means they miss the display that fires up at 11:30pm after they gave up at 10:45. Dressing properly for an Icelandic aurora hunt is not optional. Our Iceland packing guide covers clothing in full detail, but the aurora-specific version is this:

The basics: thermal underlayers, a windproof outer shell, insulated boots rated well below zero, and a hat that covers your ears. Hands lose heat fast when you are standing still. Gloves with a mitten shell over the top are better than gloves alone. Hand warmers in your pockets are a small luxury that make a large practical difference.

Beyond the gear, there is something that sounds simple but actually works: keep moving. Jumping on the spot when you feel the cold creeping in generates heat quickly without requiring you to go anywhere. Humming or even chanting softly does the same thing, and has the side effect of making the long wait in the dark feel less isolating. Standing completely still in Icelandic winter cold for two hours is harder than it sounds. Movement keeps you out there longer, which is the whole point.

A thermos of hot coffee or hot chocolate is not a luxury item on an aurora hunt. It is practical kit. The warmth it delivers at the right moment can extend your session by an hour.

When to Go

The Season: Late August to April

The northern lights require darkness, which eliminates the Icelandic summer entirely. The season typically runs from September through April, but darkness returns fast after the summer solstice and in some years aurora activity has started as early as late August when nights grow long enough. If you are visiting in late August, it is worth checking. Our guide on the best time to visit Iceland covers each month in detail if you are still planning your trip.

September and October are when the season properly begins. Nights are cooling, the autumn landscape adds dramatic colour to any display, and temperatures are still manageable compared to deep winter. By mid-October solid dark viewing windows open from around 9pm.

November through January offers the longest nights, sometimes just four to five hours of daylight in deep winter, giving you the widest possible viewing window each night. Displays are frequent. It is also the coldest period and weather is least predictable. Read our winter driving guide before you set out in this season.

February and March are a sweet spot for many visitors. Reasonable dark hours, slightly more settled weather than midwinter, and geomagnetic activity tends to be stronger around the equinoxes due to the Russell-McPherron effect, a seasonal pattern where Earth's position relative to the solar wind makes aurora-triggering magnetic reconnection more likely.

The Best Window Within the Night

The window between 9pm and 2am consistently produces the strongest results. After 15 years of aurora photography in Iceland, this is the pattern that holds up night after night. There is no simple scientific explanation for why this window tends to outperform other hours, but it does. Plan to be outside and actively watching during these hours rather than treating it as a casual after-dinner stroll.

Where to Go: Aurora Locations in Iceland

Getting away from artificial light matters more than reaching any specific landmark. Even the modest glow from Reykjavík washes out fainter displays. That said, some locations combine genuine darkness with foregrounds that elevate the experience considerably. For the top photography spots in Iceland by day and night, we have a separate guide, but here is the aurora-specific breakdown.

Near Reykjavík (within 30 minutes)

Grótta Lighthouse sits at the tip of the Seltjarnarnes peninsula, about 5 kilometres from downtown. The coastal position and open water to the north and west give you a wide sky and a lighthouse foreground that photographs beautifully against the aurora. It can get crowded on strong forecast nights, but on short notice and with a bit of patience you can still get excellent results here without driving further. For a spot this close to the city, it consistently delivers.

Öskjuhlíð Hill below the Perlan museum has forested clearings that block most of the city glow. You are still in the city, but the trees create pockets of relative darkness and the elevated position gives good sky views. Good for nights when you do not want to drive.

Álftanes Peninsula is a small finger of land across the water from central Reykjavík, roughly 15 minutes by car. Flat coastline, open sight lines, and noticeably less light pollution than you would expect this close to the city. Less visited than Grótta and often quieter.

Kleifarvatn Lake on the Reykjanes Peninsula is about 25 minutes south of the city. The lake sits surrounded by dark volcanic cliffs and there is essentially no artificial light in any direction once you are parked at the shore. One of the best genuinely dark locations within easy reach of the capital.

Heiðmörk Nature Reserve is 15 to 20 minutes southeast of the city centre. A dark-sky location by design, with enough distance from the city glow to make a meaningful difference on nights with moderate aurora activity.

Around Iceland

Jökulsárlón Glacier Lagoon is in a category of its own. The icebergs float and crackle through the night, making sounds you do not expect, and when the sky opens above them the combination of light and sound and moving ice creates something that no other location in Iceland can replicate. On calm nights the lagoon surface mirrors the aurora perfectly. Cross the road to Diamond Beach and you have ice fragments scattered across black sand with the lights above them. There is no artificial light interference out here and on the right night this is as close to overwhelming as a landscape gets. Read our full Jökulsárlón guide for logistics, boat tours, and the best time of day to visit.

Stokksnes and Vestrahorn on the east coast near Höfn are the next level. There is an access fee to enter the area, so check current pricing before you go. What you get for it is the ocean, the black sand beach with its wild sea grass patterns, and the dramatic pyramid of Vestrahorn rising behind everything. The darkness out here is exceptional. This is the kind of location that produces images you cannot quite believe you took. See more of the East Fjords if you are making the drive out.

Kirkjufell near Grundarfjörður on the Snæfellsnes Peninsula remains the most distinctive aurora foreground in Iceland. The trick most visitors miss is going down to the lake below the mountain and finding a still section of water for a reflection shot. The mountain faces almost due north, which means on active nights the aurora appears to rise directly behind it. Some of my greatest photographs have come from that lakeshore on nights when the sky and the water were both doing something extraordinary. The drive from Reykjavík is about two hours, so it works best if you are based on the peninsula or committed to a full night. See the towns of Snæfellsnes for accommodation options nearby.

Lake Mývatn in North Iceland is worth the trip for the destination itself as much as the aurora. The surrounding geothermal landscape adds a strangeness that nowhere else in Iceland has, and the calm lake surface reflects the aurora when conditions are right. North Iceland tends to have clearer skies more often than the storm-prone south coast. If you are driving the Ring Road, build in a night here specifically for this. Read the hidden charm of Akureyri for the best base nearby.

Goðafoss Waterfall near Akureyri is accessible year-round and the combination of rushing water and aurora overhead is striking. The south coast of Iceland gets most of the attention, but the north rewards the visitors who make the effort.

Ísafjörður and the Westfjords are where the experience becomes something else entirely. A still fjord with aurora dancing above it, completely alone, with light pollution at its absolute lowest and nature at its absolute highest. The fjord surface reflects the lights. There is almost no sound beyond the water. The Westfjords are remote and the infrastructure is minimal, which is precisely why the skies are pristine. This is the destination for serious aurora chasers willing to put in the travel. The reward is a sky that most visitors to Iceland never see.

Reynisfjara Beach at Vík on the south coast delivers aurora above basalt columns and crashing Atlantic surf. The dark position makes it one of the more accessible genuinely dark locations. Take the ocean warnings seriously regardless of what the sky is doing.

Seljalandsfoss is floodlit at night, which is worth knowing before you go. The artificial light on the waterfall is a strong source that can affect your dark adaptation and will blow out in long-exposure photography unless you manage it carefully. That said, the combination of a lit waterfall with aurora moving above it can produce a striking image if you handle the exposure correctly. You can walk behind the falls at night when it is open. It takes experience with mixed light sources to get it right. See our Seljalandsfoss and Skógafoss guide for full visiting details.

Photographing the Aurora: Smartphones and Cameras

Smartphones: What Actually Works in 2025-2026

Modern phones are genuinely capable of aurora photography and most visitors will get their best results using them. The key differences between brands matter.

iPhone 15 and 16 series use Night Mode, which adjusts exposure automatically based on conditions and how still the phone is. On a tripod in genuine darkness it can reach up to 30 seconds. There is no dedicated astrophotography mode. For bright, fast-moving aurora, shorter exposures of 1 to 5 seconds can be handheld if you brace the phone against something solid. A wall, a car roof, a rock. For fainter or slow-moving aurora, a tripod gives dramatically better results. Focus manually on a distant star or horizon point rather than letting the phone hunt in the dark.

Samsung Galaxy S25 series has a dedicated Astrophotography mode that stacks multiple long exposures to reduce noise, with capture durations of around 4, 7, or 10 minutes depending on the setting. The Expert RAW app adds further manual control and shoots both JPEG and RAW files simultaneously. For aurora specifically, the stacking approach works well for slow or diffuse displays. Requires a tripod.

Google Pixel 9 series has the most capable automatic astrophotography system of the three. Access it via Night Sight, then swipe to Astrophotography mode. The phone takes 16 images at 16-second exposures, stacks them automatically, and generates both a still photo and a time-lapse of the sky. The time-lapse in particular can capture aurora movement in a way that a still image cannot. Requires a tripod and takes about 4 minutes per sequence.

Overall for aurora, Pixel edges ahead because of the automatic stacking and the time-lapse output. Samsung is strong with Expert RAW control. iPhone is the most approachable and works well for active displays where you want to react quickly.

For handheld shots: bright aurora on iPhone or Samsung is possible with exposures of 1 to 3 seconds if you brace the phone firmly. A 3-second handheld shot of an erupting aurora can be excellent. Pixel's astrophotography mode is not designed for handheld use. In practice, a small phone tripod costs very little, folds to pocket size, and makes everything better regardless of which phone you have.

One thing that applies to every phone: the screen is the enemy of your dark adaptation. Take your shot, check it briefly with the screen at minimum brightness, then put it away and let your eyes recover.

Traditional Cameras

For full camera settings and detailed gear guidance, see the northern lights photography guide. The short version: wide-angle lens, fast aperture (f/2.8 or wider), manual focus set to infinity, ISO 800 to 1600, shutter speed starting at 10 to 15 seconds adjusted for aurora speed. Always on a tripod.

The Mistakes That Cost People Their Best Chances

Expecting things to happen immediately. The Bz switch has to turn on. On some nights it never does. On others it flips at midnight after two quiet hours. Giving up after 30 minutes means missing the display that starts at 11pm.

Eyes that are not ready. Thirty minutes minimum in genuine darkness before deciding the sky is disappointing. Use red light only for anything you need to look at. Phone screens, dashboard lights, and torches all snap your eyes back to square one.

Treating KP as a guarantee. A high KP means conditions are potentially favourable. It does not mean Bz is south. Keep monitoring the live data via williseeaurora.com.

Not dressing for a long wait. Standing still in Icelandic winter cold for two hours in inadequate gear is what drives people inside too early. Dress for patience. Thermals, windproof shell, insulated boots. Keep moving when the cold builds, jump on the spot, stay out there.

What the Colours Tell You

Green is the baseline. Almost every aurora display you will see in Iceland will be predominantly green. This is oxygen atoms at roughly 100 to 150 kilometres altitude being excited by solar particles and releasing energy as green light as their electrons return to ground state. This is the workhorse of the aurora spectrum and the colour most cameras and dark-adapted eyes pick up first.

Red aurora means the event is reaching higher. At altitudes above 200 kilometres, oxygen atoms are so thinly spread that electrons take much longer to settle back down. When they finally do, they emit red light. Red displays are rare and usually only appear during strong geomagnetic storms. If you see red in the sky, Bz has been strongly south for a sustained period and you are watching something exceptional. Many visitors mistake faint red aurora for clouds.

The pink or magenta fringes that sometimes appear at the lower edge of aurora bands come from nitrogen molecules at altitudes below 100 kilometres. When energetic particles push deep enough to excite nitrogen, the blue and purple it emits blends with the green above it, producing that distinctive pink border. It means the particles are hitting unusually deep into the atmosphere and the event is intense.

White aurora on camera usually means the display is bright enough that all colours are blending simultaneously. Vivid purple or violet tones at the very base of a strong display are another nitrogen signature. On a truly exceptional night, when corona aurora forms directly overhead, colours can appear in every direction at once and the display becomes almost impossible to photograph in a single frame.

Does the Aurora Make a Sound?

Yes. And this is one of the most surprising things you can experience in the right conditions.

Scientific research has confirmed that the northern lights produce sounds, typically described as crackling, clapping, or faint hissing. The sounds occur roughly 70 to 80 metres above the ground during strong aurora events, believed to be caused by electrical discharges when temperature inversions in the lower atmosphere trap ionised air. They are high-frequency sounds, which matters more than most people realise.

I know this from before I knew the science. Growing up, my family had a summerhouse in Iceland. On clear evenings we would sit in the hot tub counting satellites and making wishes on falling stars. On the nights when the northern lights came out strongly, in still air with no wind and no sound from anywhere, they made a sound. High-pitched, delicate, somewhere between stardust being thrown and very light bells playing at a great distance. I had no scientific explanation for it then. I just knew it was real.

It is real. High-frequency hearing is the first thing we lose as we age. Most adults have already lost sensitivity in exactly the range where aurora sounds sit. But children, with their full-spectrum hearing intact, can hear the northern lights clearly in the right conditions. If you are out on a strong aurora night with a child and they say they can hear something strange, do not dismiss it. They almost certainly can. You most likely cannot, not because nothing is there, but because that frequency has quietly left your range.

The best conditions for hearing aurora sounds are places with near-zero ambient noise: still fjords, remote highland spots, the quietest corners of the Westfjords. In those places, when a strong display moves overhead, the sound becomes part of the experience in a way that genuinely cannot be described to someone who has not been there.

Frequently Asked Questions

What is the KP index and what does it mean in Iceland?

The KP index runs 0 to 9 and measures global geomagnetic activity. Because Iceland sits at very high geomagnetic latitude, the aurora oval passes directly over the country. This means aurora is visible here at KP levels that would produce nothing further south. A KP of 1 or 2 can be enough for a visible display in Iceland when Bz is southward and skies are clear. KP 5 and above signals a geomagnetic storm and often produces dramatic full-sky displays visible even from Reykjavík.

What is Bz and why does it matter more than KP?

Bz is the north-south component of the interplanetary magnetic field. When it tips southward (negative), it connects with Earth's magnetosphere and allows solar wind particles in, producing aurora. When it is northward (positive), the gate stays closed, and aurora stalls even if every other number looks good. Bz is the switch that everything else depends on, and it cannot be predicted very far ahead.

How far ahead can Bz be predicted?

30 to 60 minutes, and that surprises most people. NOAA's DSCOVR satellite sits at the L1 Lagrange point approximately 1.5 million kilometres sunward from Earth and measures the solar wind before it reaches us. That gives a window of real incoming data: around 30 minutes at storm speeds, up to 60 minutes under normal solar wind conditions. What williseeaurora.com shows beyond the current moment is not a forecast model or a guess. It is solar wind already measured at L1 that is physically still in transit to Earth. You are seeing what is coming because it has already been measured, it just has not arrived yet. Once that pipeline runs out, there is nothing. No model, no satellite, no app can tell you what Bz will be doing beyond that window. This is why you monitor live rather than check once and wait.

Can you see the northern lights from Reykjavík?

Yes, on strong nights (KP 4 or above). On fainter nights the city glow is enough to wash them out. Grótta Lighthouse on the Seltjarnarnes peninsula is the best option closest to the city centre. A 20 to 30 minute drive to Kleifarvatn or Heiðmörk makes a significant difference for moderate displays.

What time of night is best?

The window between 9pm and 2am consistently produces the strongest results. Aurora can appear any time after dark, but this is the window worth prioritising.

Do you need a tour or can you self-drive?

A rental car gives you the most flexibility, especially for chasing clear sky gaps when cloud moves through. Tours are a good option if you do not have a car, since experienced guides can drive to where skies are clearest. If you go independently, monitor williseeaurora.com throughout the evening and be prepared to reposition. Our guide to renting a car in Iceland covers everything you need to know before you book.

How many nights should I allow?

At minimum three to four nights. The aurora requires both active space weather and clear skies, and Iceland's weather can be overcast for days at a stretch. The more nights you have, the more likely at least one aligns with both conditions. Visitors with one or two nights are largely at the mercy of luck.

Why do photos look so much brighter than what I saw with my eyes?

Because your eyes were not dark-adapted. This is the most misunderstood part of aurora watching and it has a full explanation in the dark adaptation section above. The short version: your eyes need 30 to 40 minutes of complete darkness to reach full sensitivity. Until then you are looking at the night sky with a daytime visual system. Cameras collect light over several seconds and show you what is genuinely there. Fully adapted eyes can see almost the same thing. Give them the time, use red light only, and the gap between the photograph and what you see with your own eyes closes dramatically.

Does the aurora make a sound?

Yes, and it is scientifically documented. The sounds, typically described as crackling or faint clapping, occur roughly 70 to 80 metres above the ground during strong aurora events. High-frequency hearing is the first range humans lose with age, and aurora sounds sit in exactly that range. Most adults cannot hear them. Children often can. If you are out with a child on a strong aurora night and they say they can hear something, they almost certainly are hearing it. The best conditions for aurora sound are places with near-zero ambient noise: deep fjords, remote highland areas, the quietest parts of the Westfjords.