Aurora Borealis in Blekinge
Sweden · 56.17°, 15.22° · geomagnetic 55.4° · needs Kp 7
Tonight in Blekinge
17%
Peak chance of a visible display tonight, from the same model the Revon app runs. Blekinge needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 5.7. Short of the threshold, which is what most nights look like here.
Updated 2026-08-02 20:20 UTC
The next 30 nights in Blekinge
Every night to come, scored the same way as tonight. The best of the open week is Sunday 2 Aug at 17%. Not one of the seven reaches the Kp 7 that Blekinge needs, which is normal rather than unlucky — it averages 2.5 viable nights a year. 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
See all 30 nights for Blekinge
Revon aurora model over the NOAA Kp forecast and 27-day outlook
How often the aurora borealis reaches Blekinge
2.5 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
Wait for an alert; do not book a week
At Kp 7, Blekinge needs a severe geomagnetic storm before anything shows above the northern horizon. Storms that size arrive a handful of times per solar cycle and announce themselves a day or two ahead. Watching for one beats picking dates and hoping.
Hours of true darkness, month by month
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 11.9 | 10.3 | 8.1 | 4.7 | 0.0 | 0.0 | 0.0 | 2.8 | 7.0 | 9.6 | 11.5 | 12.3 |
Solar declination and hour angle at −18°
Nothing to see from May to July
Through those months the sun never falls more than 18° below the Blekinge horizon, so the sky never darkens fully. Plan around the darker half of the year.
Getting clear of the light
The sky over Blekinge reads Bortle 3. Getting clear of the built-up area makes a visible difference on a marginal night.
- 9 km north — around Ronneby kommun → Bortle 3
- 9 km north — around Ronneby kommun → Bortle 3
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, November and August came out ahead in Blekinge. 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 Blekinge viewing season.
- 13 Aug 2026
- 11 Sep 2026
- 11 Oct 2026
- 09 Nov 2026
- 09 Dec 2026
- 07 Jan 2027
- 06 Feb 2027
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 Inverness, 1,188 km west-north-west in United Kingdom.
| Blekinge | Inverness | |
|---|---|---|
| Kp needed | 7 | 5 |
| Nights per year | 2.5 | 28.7 |
| Geomagnetic latitude | 55.4° | 59.8° |
Confirmed reports from this area
3 verified sightings were logged within 300 km of Blekinge 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 Blekinge
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 Blekinge.
- Getsjön — lake3.2 km north-west
- Ronnebyfjärden — bay3.7 km east
- Karön — island3.7 km east
- Långsjön — lake3.8 km north
- Killingsholmen — island4.2 km east
- Vierydsfjärden — bay4.6 km west
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 Blekinge and the sky was dark enough to show it.
| Date | Peak |
|---|---|
| 2026-03-20 | Kp 7.0 |
| 2026-01-20 | Kp 7.67 |
| 2026-01-19 | Kp 8.67 |
| 2025-11-12 | Kp 7.33 |
| 2025-11-11 | Kp 8.67 |
NOAA planetary Kp
Aurora forecasts across Blekinge
All 2 places in Blekinge with a forecast page, and the Kp each one needs.
- KarlshamnKp 7
- KarlskronaKp 7
Know when it is worth going outside
Revon watches the Blekinge forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Common questions about the aurora borealis in Blekinge
Can you see the aurora borealis from Blekinge?
Yes. On the last 10.0 years of NOAA Kp records, Blekinge had about 2.5 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 Blekinge?
Kp 7. Blekinge sits at geomagnetic latitude 55.4°, and the auroral oval only reaches that far from the pole once activity hits Kp 7. Storms that size occur about 3.2 nights a year.
When is the best time of year to see the aurora borealis in Blekinge?
September, November and August. Those months scored highest once both conditions are counted together: geomagnetic activity and enough hours of real darkness. From May to July the sky over Blekinge never gets fully dark, so nothing is visible however strong the storm.
Where can you escape the light pollution near Blekinge?
The centre of Blekinge reads Bortle 3. The nearest sky at Bortle 3 is about 9 km north around Ronneby kommun. On a marginal night that drive matters more than the forecast does.
Where is the nearest place to Blekinge with reliable aurora borealis?
Inverness, United Kingdom — 1,188 km west-north-west. It needs only Kp 5 and averages 28.7 viable nights a year against 2.5 in Blekinge.
Nearby towns
Forecasts for places within reach of Blekinge.
- 🇸🇪 Kristianstad - Sweden68 km
- 🇸🇪 Växjö - Sweden83 km
- 🇸🇪 Kalmar - Sweden89 km
- 🇸🇪 Hässleholm - Sweden90 km
- 🇸🇪 Ljungby - Sweden108 km
- 🇸🇪 Ystad - Sweden120 km
- 🇸🇪 Eslöv - Sweden125 km
- 🇸🇪 Värnamo - Sweden135 km