Aurora Borealis in North Savo

Finland · 62.96°, 27.60° · geomagnetic 60.0° · needs Kp 5

Tonight in North Savo

39%

Peak chance of a visible display tonight, from the same model the Revon app runs. North Savo needs Kp 5, and tonight the forecast peaks at Kp 5.7. That is on the threshold rather than over it, so cloud and moonlight will decide the night.

Tonight Sun 02 Aug
39%
18
20
22
00
02
04
06
Tomorrow Mon 3 Aug
10%
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 North Savo

Every night to come, scored the same way as tonight. The best of the open week is Sunday 2 Aug at 39%. One of the seven reaches the Kp 5 that North Savo needs: Sunday 2 Aug, 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 1 AM. Similar conditions expected on August 19th.

Sun 2
39%
Kp 5.7
Mon 3
10%
Kp 3.3
Tue 4
2%
Kp 2.0
Wed 5
33%
Kp 3.0
Thu 6
10%
Kp 3.0
Fri 7
10%
Kp 2.0
Sat 8
3%
Kp 2.0

Nights 8–30 unlock in the Revon app

See all 30 nights for North Savo

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

How often the aurora borealis reaches North Savo

19.0 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

Worth watching through the dark half of the year

Kp 5 is a moderate storm — not an everyday event, but common enough that a patient observer in North Savo sees the aurora borealis most winters.

Hours of true darkness, month by month

JanFebMarAprMayJunJulAugSepOctNovDec
12.210.17.20.00.00.00.00.05.59.211.712.8

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 North Savo horizon, so the sky never darkens fully. Plan around the darker half of the year.

Getting clear of the light

With 186,719 people around you, the sky over central North Savo is Bortle 7. The glow hides anything but the brightest display, so the drive out matters more here than the forecast does.

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, September, March and October came out ahead in North Savo. 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 North Savo 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, 403 km north-north-west in Finland.

North SavoRovaniemi
Kp needed53
Nights per year19.0 171.4
Geomagnetic latitude60.0° 63.6°

See the Rovaniemi forecast

Confirmed reports from this area

154 verified sightings were logged within 300 km of North Savo 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 North Savo

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 North Savo.

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 North Savo you will find Puijon torni, and for a day when the cloud sits low, Harjamäen Sairaalamuseo, Suomen Ortodoksinen Kirkkomuseo Riisa and Pohjois-Savon Palomuseo 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)

Where to stay

Staying central in North Savo is fine for everything except the aurora itself — you will still need to drive out. If seeing it matters more than convenience, base yourself on the edge of town facing your dark spot.

Places from GeoNames (CC BY 4.0) — confirm before booking

The last nights it was visible here

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

DatePeak
2026-03-24Kp 5.0
2026-03-23Kp 5.0
2026-03-22Kp 6.67
2026-03-21Kp 6.0
2026-03-20Kp 7.0

NOAA planetary Kp

Aurora forecasts across North Savo

All 4 places in North Savo with a forecast page, and the Kp each one needs.

Know when it is worth going outside

Revon watches the North Savo 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 North Savo

Can you see the aurora borealis from North Savo?

Yes. On the last 10.0 years of NOAA Kp records, North Savo had about 19.0 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 North Savo?

Kp 5. North Savo sits at geomagnetic latitude 60.0°, and the auroral oval only reaches that far from the pole once activity hits Kp 5. Storms that size occur about 28.7 nights a year.

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

September, March and October. 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 North Savo never gets fully dark, so nothing is visible however strong the storm.

Where can you escape the light pollution near North Savo?

The centre of North Savo reads Bortle 7. The nearest sky at Bortle 4 is about 31 km west around Tervo. On a marginal night that drive matters more than the forecast does.

Where is the nearest place to North Savo with reliable aurora borealis?

Rovaniemi, Finland — 403 km north-north-west. It needs only Kp 3 and averages 171.4 viable nights a year against 19.0 in North Savo.

Nearby towns

Forecasts for places within reach of North Savo.