Aurora Borealis in Finland

Finland · 61.35°, 24.90° · geomagnetic 58.8° · needs Kp 3

Tonight in Finland

38%

Peak chance of a visible display tonight, from the same model the Revon app runs. Finland needs Kp 3 before anything clears the northern horizon, and tonight the forecast peaks at Kp 5.7 — comfortably over the line.

Tonight Sun 02 Aug
38%
18
20
22
00
02
04
06
Tomorrow Mon 3 Aug
4%
Hour-by-hour for this night is in the app
Tuesday Tue 4 Aug
2%
Hour-by-hour for this night is in the app

Unlock every hour in the app

Updated 2026-08-02 20:20 UTC

The next 30 nights in Finland

Every night to come, scored the same way as tonight. The best of the open week is Sunday 2 Aug at 38%. 4 of the seven reach the Kp 3 that Finland needs, topping out at Kp 5.7. The 23 nights past the seven-day window move with the 27-day solar rotation and are updated daily in the app.

Moderate aurora activity tonight around midnight. Similar conditions expected on August 19th.

Sun 2
38%
Kp 5.7
Mon 3
4%
Kp 3.3
Tue 4
2%
Kp 2.0
Wed 5
17%
Kp 3.0
Thu 6
4%
Kp 3.0
Fri 7
3%
Kp 2.0
Sat 8
2%
Kp 2.0

Nights 8–30 unlock in the Revon app

See all 30 nights for Finland

Revon aurora model over the NOAA Kp forecast and 27-day outlook

How often the aurora borealis reaches Finland

120.3 nights a year, averaged across 10.0 years of records

Storm levelNights / year
Kp 483.4
Kp 528.7
Kp 69.3
Kp 73.2
Kp 81.2

NOAA planetary Kp, 2016-04-02 to 2026-03-30

You are inside the auroral oval

Finland sits far enough northern that quiet conditions are enough. What limits you here is cloud and moonlight, not geomagnetic activity.

Hours of true darkness, month by month

JanFebMarAprMayJunJulAugSepOctNovDec
12.110.27.42.10.00.00.00.06.09.311.712.7

Solar declination and hour angle at −18°

Nothing to see from May to August

Through those months the sun never falls more than 18° below the Finland horizon, so the sky never darkens fully. Plan around the darker half of the year.

Getting clear of the light

Finland is small enough that its own lights are a minor problem — the centre reads Bortle 4. Walking to the edge of town is often escape enough.

Falchi 2016 World Atlas (DOI: 10.5880/GFZ.1.4.2016.001)

The months that actually deliver

Counting only nights that were both stormy enough and dark enough, March, September and October came out ahead in Finland. That is storm season and darkness overlapping — the equinoxes tend to be geomagnetically active, and the nights are already long by then.

Darkest nights of the coming year

A bright moon washes out a weak display as effectively as street lighting. These new moons fall inside the Finland viewing season.

Where it is close to a certainty

If you would rather plan a trip than wait for a storm, the nearest place with genuinely frequent aurora is Rovaniemi, 574 km north in Finland.

FinlandRovaniemi
Kp needed33
Nights per year120.3 171.4
Geomagnetic latitude58.8° 63.6°

See the Rovaniemi forecast

Confirmed reports from this area

166 verified sightings were logged within 300 km of Finland between 2015-01-01 and 2016-12-31. Rare is not the same as impossible.

Aurorasaurus verified positive reports

Where the horizon opens up near Finland

The display sits low on the northern horizon, so what beats a better forecast is open ground facing that way. Height gets you above the town glow; water gives you an unbroken skyline. These are within a short drive of Finland.

Places from GeoNames (CC BY 4.0)

Places to watch from

Named viewpoints and reserves near Finland that sit outside the worst of the light. Each puts the northern horizon over open ground instead of over rooftops.

Places from OpenStreetMap contributors

The last nights it was visible here

Nights in the last decade when the storm was strong enough for Finland and the sky was dark enough to show it.

DatePeak
2026-03-30Kp 3.0
2026-03-29Kp 3.33
2026-03-28Kp 3.67
2026-03-27Kp 3.33
2026-03-26Kp 3.0

NOAA planetary Kp

Aurora forecasts across Finland

All 18 regions in Finland with a forecast page, and the Kp each one needs.

Know when it is worth going outside

Revon watches the Finland forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.

Get aurora alerts on iPhone

Common questions about the aurora borealis in Finland

Can you see the aurora borealis from Finland?

Yes. On the last 10.0 years of NOAA Kp records, Finland had about 120.3 nights a year when the storm was strong enough and the sky dark enough at the same time.

What Kp index do you need to see the aurora borealis in Finland?

Kp 3. Finland sits at geomagnetic latitude 58.8°, and the auroral oval only reaches that far from the pole once activity hits Kp 3.

When is the best time of year to see the aurora borealis in Finland?

March, September and October. Those months scored highest once both conditions are counted together: geomagnetic activity and enough hours of real darkness. From May to August the sky over Finland never gets fully dark, so nothing is visible however strong the storm.

Where can you escape the light pollution near Finland?

The centre of Finland reads Bortle 4. The nearest sky at Bortle 4 is about 12 km south-south-east around Hämeenlinna. On a marginal night that drive matters more than the forecast does.

Where is the nearest place to Finland with reliable aurora borealis?

Rovaniemi, Finland — 574 km north. It needs only Kp 3 and averages 171.4 viable nights a year against 120.3 in Finland.

Nearby towns

Forecasts for places within reach of Finland.