Aurora Borealis in Tornio
Finland · 65.85°, 24.15° · geomagnetic 63.2° · needs Kp 3
Tonight in Tornio
38%
Peak chance of a visible display tonight, from the same model the Revon app runs. Tornio needs Kp 3 before anything clears the northern horizon, and tonight the forecast peaks at Kp 5.7 — comfortably over the line.
Updated 2026-08-02 20:20 UTC
The next 30 nights in Tornio
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 Tornio 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.
Nights 8–30 unlock in the Revon app
Revon aurora model over the NOAA Kp forecast and 27-day outlook
How often the aurora borealis reaches Tornio
107.5 nights a year, averaged across 10.0 years of records
| Storm level | Nights / year |
|---|---|
| Kp 4 | 83.4 |
| Kp 5 | 28.7 |
| Kp 6 | 9.3 |
| Kp 7 | 3.2 |
| Kp 8 | 1.2 |
NOAA planetary Kp, 2016-04-02 to 2026-03-30
You are inside the auroral oval
Tornio 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
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12.4 | 10.0 | 6.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.4 | 9.0 | 11.8 | 13.1 |
Solar declination and hour angle at −18°
Nothing to see from April to August
Through those months the sun never falls more than 18° below the Tornio horizon, so the sky never darkens fully. Plan around the darker half of the year.
Getting clear of the light
Tornio is small enough that its own lights are a minor problem — the centre reads Bortle 7. Walking to the edge of town is often escape enough.
- 18 km north-north-east → Bortle 4
- 18 km north-north-east → Bortle 4
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, October and February came out ahead in Tornio. 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 Tornio viewing season.
- 11 Sep 2026
- 11 Oct 2026
- 09 Nov 2026
- 09 Dec 2026
- 07 Jan 2027
- 06 Feb 2027
- 08 Mar 2027
Where it is close to a certainty
Rovaniemi is close enough to reach and return in a night — 101 km north-east — and needs only Kp 3.
| Tornio | Rovaniemi | |
|---|---|---|
| Kp needed | 3 | 3 |
| Nights per year | 107.5 | 171.4 |
| Geomagnetic latitude | 63.2° | 63.6° |
Confirmed reports from this area
196 verified sightings were logged within 300 km of Tornio 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 Tornio
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 Tornio.
- Tanskinsaari — island3.1 km north
- Klipunsaari — island4.3 km east
- Koijumaa — hill5.2 km north-east
- Revonpesämaa — hill5.6 km north-north-east
- Ahvenjärvi — lake10.9 km east-north-east
- Iso Karsikkojärvi — lake11.1 km north-west
Places from GeoNames (CC BY 4.0)
What to do with the daylight
Aurora watching is a night job, and in winter that leaves a short, bright day to fill. Close to Tornio you will find Piispankivi, and for a day when the cloud sits low, Tornionlaakson Museo, Aineen Taidemuseo and Alatornion pitäjämuseo are indoors and near by.
Keep the daylight loose: the sky decides the evening, and the forecast can turn within a few hours.
Places from GeoNames (CC BY 4.0)
The last nights it was visible here
Nights in the last decade when the storm was strong enough for Tornio and the sky was dark enough to show it.
| Date | Peak |
|---|---|
| 2026-03-30 | Kp 3.0 |
| 2026-03-29 | Kp 3.33 |
| 2026-03-28 | Kp 3.67 |
| 2026-03-27 | Kp 3.33 |
| 2026-03-26 | Kp 3.0 |
NOAA planetary Kp
Know when it is worth going outside
Revon watches the Tornio forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Common questions about the aurora borealis in Tornio
Can you see the aurora borealis from Tornio?
Yes. On the last 10.0 years of NOAA Kp records, Tornio had about 107.5 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 Tornio?
Kp 3. Tornio sits at geomagnetic latitude 63.2°, 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 Tornio?
March, October and February. Those months scored highest once both conditions are counted together: geomagnetic activity and enough hours of real darkness. From April to August the sky over Tornio never gets fully dark, so nothing is visible however strong the storm.
Where can you escape the light pollution near Tornio?
The centre of Tornio reads Bortle 7. The nearest sky at Bortle 4 is about 18 km north-north-east. On a marginal night that drive matters more than the forecast does.
Where is the nearest place to Tornio with reliable aurora borealis?
Rovaniemi, Finland — 101 km north-east. It needs only Kp 3 and averages 171.4 viable nights a year against 107.5 in Tornio.
Nearby towns
Forecasts for places within reach of Tornio.
- 🇫🇮 Haukipudas - Finland93 km
- 🇸🇪 Luleå - Sweden96 km
- 🇫🇮 Rovaniemi - Finland101 km
- 🇫🇮 Oulu - Finland111 km
- 🇸🇪 Boden - Sweden112 km
- 🇫🇮 Raahe - Finland130 km
- 🇸🇪 Piteå - Sweden136 km
- 🇸🇪 Skellefteå - Sweden192 km