Aurora Borealis in Agder

Norway · 58.32°, 8.45° · geomagnetic 58.5° · needs Kp 5

Tonight in Agder

34%

Peak chance of a visible display tonight, from the same model the Revon app runs. Agder 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
34%
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 Agder

Every night to come, scored the same way as tonight. The best of the open week is Sunday 2 Aug at 34%. One of the seven reaches the Kp 5 that Agder 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 midnight. Similar conditions expected on August 19th.

Sun 2
34%
Kp 5.7
Mon 3
4%
Kp 3.3
Tue 4
2%
Kp 1.9
Wed 5
13%
Kp 3.0
Thu 6
3%
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 Agder

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

How often the aurora borealis reaches Agder

21.7 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 Agder sees the aurora borealis most winters.

Hours of true darkness, month by month

JanFebMarAprMayJunJulAugSepOctNovDec
12.010.37.93.90.00.00.00.46.69.511.612.4

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

Getting clear of the light

With 172,170 people around you, the sky over central Agder 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 Agder. 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 Agder 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 Inverness, 754 km west in United Kingdom.

AgderInverness
Kp needed55
Nights per year21.7 28.7
Geomagnetic latitude58.5° 59.8°

See the Inverness forecast

Confirmed reports from this area

25 verified sightings were logged within 300 km of Agder 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 Agder

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 Agder.

Places from GeoNames (CC BY 4.0)

Where to stay

Staying central in Agder 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 Agder 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 Agder

All 3 places in Agder with a forecast page, and the Kp each one needs.

Know when it is worth going outside

Revon watches the Agder 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 Agder

Can you see the aurora borealis from Agder?

Yes. On the last 10.0 years of NOAA Kp records, Agder had about 21.7 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 Agder?

Kp 5. Agder sits at geomagnetic latitude 58.5°, 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 Agder?

September, March 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 Agder never gets fully dark, so nothing is visible however strong the storm.

Where can you escape the light pollution near Agder?

The centre of Agder reads Bortle 7. The nearest sky at Bortle 4 is about 19 km east-south-east around Grimstad. On a marginal night that drive matters more than the forecast does.

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

Inverness, United Kingdom — 754 km west. It needs only Kp 5 and averages 28.7 viable nights a year against 21.7 in Agder.

Nearby towns

Forecasts for places within reach of Agder.