Aurora Forecast Tonight in Oslo
Aurora season in Oslo runs from September to April.
Tonight's Forecast
Low
?
How we calculate the aurora score
LowWe combine geomagnetic activity (Kp), aurora oval probability (OVATION), cloud cover, darkness and moonlight, weighted for Oslo (region: low_latitude).
Score 0–19. Conditions strongly limit aurora visibility.
Score 20–44. A faint aurora is possible only under perfect conditions.
Score 45–64. Aurora may be visible to alert observers in dark, clear skies.
Score 65–84. A good chance of a visible aurora display.
Score 85–100. Excellent odds — plan to be outside tonight.
Low chance tonight. Aurora may be possible only under very favorable local conditions.
Aurora visibility in Oslo is low tonight. A stronger geomagnetic storm or better local conditions would improve the chance of seeing the Northern Lights.
Max Kp
?
Max Kp
Below thresholdKp is below the minimum needed at this latitude.
3.0
Below threshold
Cloud Cover
?
Cloud Cover
Clear skiesUp to 25% cloud — excellent visibility.
25%
Clear skies
Moon
?
Moon
Bright moonOver 75% illuminated — only strong displays will be visible.
88%
Bright moon
OVATION
?
OVATION
LowLess than 5% probability — aurora unlikely to reach this location.
3%
Low
Best Viewing Window
11:00 PM – 1:00 AM
Best balance of darkness, geomagnetic activity and local sky conditions.
Direction to Look
North
This location is farther from the auroral oval, so aurora is most likely to appear low on the northern horizon during strong activity.
Recommendation
Check the forecast again later. Aurora conditions can change quickly during geomagnetic activity.
Hour-by-hour visibility
Estimated aurora visibility score for each hour of tonight at Oslo.
10:00 PM
20/100Max Kp
2.0
Cloud Cover
21%
Moon
88%
OVATION
3%
35
11:00 PM
35/100Max Kp
2.0
Cloud Cover
16%
Moon
88%
OVATION
3%
32
12:00 AM
32/100Max Kp
2.0
Cloud Cover
28%
Moon
88%
OVATION
3%
1:00 AM
31/100Max Kp
3.0
Cloud Cover
32%
Moon
88%
OVATION
3%
2:00 AM
32/100Max Kp
3.0
Cloud Cover
30%
Moon
88%
OVATION
3%
Best viewing window: 11:00 PM – 1:00 AM. Peak around 11:00 PM with a visibility score of 35/100.
Why this forecast?
There is a low chance of visible aurora tonight. Some conditions may help, but overall the forecast does not strongly support visibility.
Score breakdown
How tonight's aurora score for Oslo breaks down into activity and visibility components.
?
Geomagnetic activity
0 / 45Geomagnetic activity (Kp 3.0) contribution to the score.
?
Aurora oval probability
2 / 15OVATION aurora oval probability (3%) contribution.
?
Cloud cover
14 / 20Cloud cover (31%) contribution — clear skies score full points.
?
Darkness
15 / 15Sky darkness contribution — astronomical darkness scores full points.
?
Moonlight
1 / 5Moon illumination (88%) contribution — new moon scores full points.
?
Aurora zone
-5 ptsLatitude/zone bonus for Oslo.
?
Geomagnetic activity (Kp index)
Below thresholdKp measures how disturbed Earth's magnetic field is on a 0–9 scale. Higher Kp pushes the aurora oval toward the equator. Oslo needs Kp ≥ 6.
Kp is below the minimum needed at this latitude.
Kp is close to the minimum needed — a faint aurora may appear low on the horizon.
Kp meets the threshold for visible aurora here.
Kp is comfortably above the local threshold.
Storm-level Kp ≥ 5 — aurora can be seen far south of its usual zone.
Below threshold
Geomagnetic activity is below the usual visibility threshold for Oslo: expected Kp is 3.0, while this location usually needs around 6.
?
Cloud cover
Clear skiesAverage cloud cover during the best viewing window. Clear skies are essential — even thin overcast hides the aurora.
Up to 25% cloud — excellent visibility.
25–50% cloud — aurora may peek through gaps.
50–85% cloud — most of the sky is blocked.
Over 85% cloud — aurora effectively hidden.
Clear skies
Skies are mostly clear, which is favorable for seeing the aurora.
?
Sky darkness
Astronomical darknessAurora is faint and needs a dark sky. Astronomical darkness (sun more than 18° below horizon) is ideal.
Sun stays above 6° below horizon all night — no aurora-friendly darkness.
Sun 6–12° below horizon — too bright for faint aurora.
Sun 12–18° below horizon — sky is dark but not fully astronomical.
Sun more than 18° below the horizon — fully dark sky.
Astronomical darkness
?
Moon illumination
Bright moonA bright moon washes out faint aurora colours. New moon is ideal; full moon hides everything but the strongest displays.
Less than 25% illuminated — minimal interference.
25–75% illuminated — faint aurora may be washed out.
Over 75% illuminated — only strong displays will be visible.
Bright moon
Moon is 88% illuminated — expect washed-out faint aurora.
?
Aurora oval probability (OVATION)
LowNOAA's OVATION model estimates the chance of aurora visible overhead within a 250 km radius of you.
Less than 5% probability — aurora unlikely to reach this location.
5–20% probability — aurora possible.
20–40% probability — aurora likely if skies are clear.
Over 40% probability — aurora very likely overhead.
Low
The aurora oval probability is low for this location tonight.
?
Aurora zone
Low zoneHow favourable Oslo's latitude is for aurora viewing in general — independent of tonight's conditions.
Lower latitude — aurora is rare and requires a major storm.
Mid-latitude — aurora visible only during moderate-to-strong storms.
High-latitude region — aurora is visible on most active nights.
Directly under the auroral oval — aurora is a regular occurrence.
Low zone
Oslo is outside the main aurora zone, so visible aurora usually requires a strong geomagnetic storm.
Data sources
- · NOAA SWPC Kp forecast
- · NOAA OVATION aurora model
- · Open-Meteo cloud forecast
Aurora Forecast AI Tracker
Get aurora alerts for Oslo
Save Oslo in Aurora Forecast AI Tracker to follow the local Northern Lights forecast, hourly aurora visibility and best viewing window. Get notified when Kp activity, darkness and cloud cover create better chances to see the aurora.
- Smart aurora alerts
- Best viewing window
- Hourly forecast
- Saved locations
Best Months to See the Northern Lights in Oslo
The aurora season in Oslo usually runs from October to March.
Oslo sits at 58.4° magnetic latitude, which means aurora typically becomes visible when the Kp index reaches 6.0+. Aurora sightings in Oslo are extremely rare, requiring massive geomagnetic storms. The best chance is during the darkest winter nights, but expectations should be very low.