Tonight
May 21 - May 22
- 16 °C
93 percent cloud cover - 14 °C94 percent cloud cover
- 12 °C
66 percent cloud cover
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Northern Lights Forecast for Trondheim
Trondheim, Norway
63°25′49.8″N ⋅ 10°23′42.4″E
Aurora data last updated at
Current local time:
Aurora activity is expected to be low between 11 PM and 8 AM in Trondheim tonight. Cloud cover around that time looks mostly cloudy at 25% to 95%. Low activity and cloud cover together may make the aurora difficult to spot.
Aurora Forecast for Trondheim
Today at 11:00 PM
Low Activity
Cloud Cover:93%
Aurora activity
High clouds
Middle clouds
Low clouds
Fog
Aurora activity
High clouds
Middle clouds
Low clouds
Fog
Hourly aurora forecast for Trondheim
| Local time | Aurora activity |
|---|---|
| Low Activity | |
| Low Activity | |
| Low Activity | |
| Low Activity | |
| No activity | |
| No activity | |
| No activity | |
| Low Activity | |
| Low Activity | |
| Low Activity | |
| Low Activity | |
| Low Activity | |
| No activity | |
| No activity | |
| No activity | |
| Low Activity |
3-Night Weather Forecast for Trondheim
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Tomorrow night
May 22 - May 23
- 15 °C
100 percent cloud cover - 14 °C100 percent cloud cover
- 14 °C100 percent cloud cover
Saturday night
May 23 - May 24
- 13 °C100 percent cloud cover
- 12 °C100 percent cloud cover
- 12 °C100 percent cloud cover
Sun & Moon
Sunset
Sunrise
Current Moon
First Quarter
32% illumination
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Long-Term Aurora Forecast for Trondheim
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
Thursday, May 21, 2026. Today. Low aurora activity. Aurora score 2 out of 10. Waxing crescent, 29% illumination | Friday, May 22, 2026. Low aurora activity. Aurora score 2 out of 10. First quarter, 40% illumination | Saturday, May 23, 2026. Low aurora activity. Aurora score 2 out of 10. First quarter, 50% illumination | Sunday, May 24, 2026. Low aurora activity. Aurora score 1 out of 10. First quarter, 61% illumination | |||
Monday, May 25, 2026. Low aurora activity. Aurora score 1 out of 10. Waxing gibbous, 71% illumination | Tuesday, May 26, 2026. Low aurora activity. Aurora score 1 out of 10. Waxing gibbous, 79% illumination | Wednesday, May 27, 2026. Low aurora activity. Aurora score 2 out of 10. Waxing gibbous, 87% illumination | Thursday, May 28, 2026. Low aurora activity. Aurora score 2 out of 10. Waxing gibbous, 93% illumination | Friday, May 29, 2026. Low aurora activity. Aurora score 2 out of 10. Full moon, 97% illumination | Saturday, May 30, 2026. Low aurora activity. Aurora score 2 out of 10. Full moon, 99% illumination | Sunday, May 31, 2026. Low aurora activity. Aurora score 2 out of 10. Full moon, 100% illumination |
Monday, June 1, 2026. Low aurora activity. Aurora score 1 out of 10. Full moon, 99% illumination | Tuesday, June 2, 2026. Low aurora activity. Aurora score 1 out of 10. Waning gibbous, 96% illumination | Wednesday, June 3, 2026. Low aurora activity. Aurora score 1 out of 10. Waning gibbous, 91% illumination | Thursday, June 4, 2026. Low aurora activity. Aurora score 2 out of 10. Waning gibbous, 85% illumination | Friday, June 5, 2026. Low aurora activity. Aurora score 1 out of 10. Waning gibbous, 78% illumination | Saturday, June 6, 2026. Low aurora activity. Aurora score 1 out of 10. Last quarter, 69% illumination | Sunday, June 7, 2026. Low aurora activity. Aurora score 1 out of 10. Last quarter, 60% illumination |
Monday, June 8, 2026. Low aurora activity. Aurora score 1 out of 10. Last quarter, 49% illumination | Tuesday, June 9, 2026. Low aurora activity. Aurora score 2 out of 10. Last quarter, 39% illumination | Wednesday, June 10, 2026. Low aurora activity. Aurora score 1 out of 10. Waning crescent, 28% illumination | Thursday, June 11, 2026. Moderate aurora activity. Aurora score 5 out of 10. Waning crescent, 19% illumination | Friday, June 12, 2026. Moderate aurora activity. Aurora score 5 out of 10. Waning crescent, 10% illumination | Saturday, June 13, 2026. Low aurora activity. Aurora score 2 out of 10. Waning crescent, 4% illumination | Sunday, June 14, 2026. Low aurora activity. Aurora score 2 out of 10. New moon, 1% illumination |
Monday, June 15, 2026. Low aurora activity. Aurora score 1 out of 10. New moon, 0% illumination | Tuesday, June 16, 2026. Low aurora activity. Aurora score 1 out of 10. New moon, 3% illumination | Wednesday, June 17, 2026. Low aurora activity. Aurora score 2 out of 10. Waxing crescent, 8% illumination |
LowAurora ActivityHigh
Northern Lights in Trondheim
Trondheim is situated in Norway. While not directly under the standard auroral oval, its northern location at 63.4° makes it a very reliable viewing spot. Monitor local weather carefully, as clear skies are your biggest hurdle in this prime location.
When to see aurora borealis in Trondheim
The aurora season in Trondheim is generally active from early September until late March. December through February offers the longest nights, giving you the widest daily window to spot activity.
FAQ
What Kp index do I need to see the northern lights in Trondheim?
In Trondheim, you usually need at least Kp 2 to have a reasonable chance of seeing the northern lights. Lower Kp can still bring a faint aurora display low on the northern horizon, but it is less common.
This is based on magnetic latitude, and Kp index is a global geomagnetic index, so treat it as a rule of thumb, not a location-specific guarantee.
Tonight, the NOAA Kp index forecast is around 2.7. That is around the usual Kp index threshold for Trondheim, so you might have a chance of seeing the aurora if the sky is clear and dark.