Tonight
Aug 15 - Aug 16
- 13 °C
100 percent cloud cover - 13 °C100 percent cloud cover
- 13 °C
100 percent cloud cover
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Northern Lights Forecast for Ruka
Ruka, Lapland, Finland
66°9′55.4″N ⋅ 29°9′5.8″E
Aurora data last updated at
Current local time:
Aurora activity is expected to be low between 9 PM and 9 AM in Ruka tonight. Cloud cover around that time looks overcast at around 95%. Low activity and cloud cover together may make the aurora difficult to spot.
Aurora Forecast for Ruka
Today at 9:00 PM
Low Activity
Cloud Cover:100%
Aurora activity
High clouds
Middle clouds
Low clouds
Fog
Aurora activity
High clouds
Middle clouds
Low clouds
Fog
Hourly aurora forecast for Ruka
| Local time | Aurora activity |
|---|---|
| Low Activity | |
| Low Activity | |
| Low Activity | |
| Low Activity | |
| Low 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 Ruka
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Tomorrow night
Aug 16 - Aug 17
- 14 °C97 percent cloud cover
- 12 °C
77 percent cloud cover - 10 °C55 percent cloud cover
Monday night
Aug 17 - Aug 18
- 12 °C97 percent cloud cover
- 10 °C84 percent cloud cover
Sun & Moon
Sunset
Sunrise
Current Moon
Waxing Crescent
10% illumination
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Long-Term Aurora Forecast for Ruka
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
Saturday, August 15, 2026. Today. Low aurora activity. Aurora score 3 out of 10. Waxing crescent, 10% illumination | Sunday, August 16, 2026. Low aurora activity. Aurora score 2 out of 10. Waxing crescent, 17% illumination | |||||
Monday, August 17, 2026. Low aurora activity. Aurora score 3 out of 10. Waxing crescent, 25% illumination | Tuesday, August 18, 2026. Low aurora activity. Aurora score 2 out of 10. First quarter, 35% illumination | Wednesday, August 19, 2026. Low aurora activity. Aurora score 1 out of 10. First quarter, 44% illumination | Thursday, August 20, 2026. Low aurora activity. Aurora score 1 out of 10. First quarter, 54% illumination | Friday, August 21, 2026. Low aurora activity. Aurora score 2 out of 10. First quarter, 63% illumination | Saturday, August 22, 2026. Low aurora activity. Aurora score 1 out of 10. Waxing gibbous, 72% illumination | Sunday, August 23, 2026. Low aurora activity. Aurora score 1 out of 10. Waxing gibbous, 80% illumination |
Monday, August 24, 2026. Low aurora activity. Aurora score 1 out of 10. Waxing gibbous, 87% illumination | Tuesday, August 25, 2026. Low aurora activity. Aurora score 1 out of 10. Waxing gibbous, 93% illumination | Wednesday, August 26, 2026. Low aurora activity. Aurora score 1 out of 10. Full moon, 97% illumination | Thursday, August 27, 2026. Low aurora activity. Aurora score 1 out of 10. Full moon, 100% illumination | Friday, August 28, 2026. Low aurora activity. Aurora score 1 out of 10. Full moon, 100% illumination | Saturday, August 29, 2026. Low aurora activity. Aurora score 1 out of 10. Full moon, 98% illumination | Sunday, August 30, 2026. Low aurora activity. Aurora score 1 out of 10. Waning gibbous, 94% illumination |
Monday, August 31, 2026. Low aurora activity. Aurora score 1 out of 10. Waning gibbous, 88% illumination | Tuesday, September 1, 2026. Low aurora activity. Aurora score 1 out of 10. Waning gibbous, 80% illumination | Wednesday, September 2, 2026. Low aurora activity. Aurora score 1 out of 10. Waning gibbous, 70% illumination | Thursday, September 3, 2026. Low aurora activity. Aurora score 1 out of 10. Last quarter, 60% illumination | Friday, September 4, 2026. Low aurora activity. Aurora score 1 out of 10. Last quarter, 48% illumination | Saturday, September 5, 2026. Low aurora activity. Aurora score 1 out of 10. Last quarter, 37% illumination | Sunday, September 6, 2026. Low aurora activity. Aurora score 1 out of 10. Waning crescent, 26% illumination |
Monday, September 7, 2026. Low aurora activity. Aurora score 1 out of 10. Waning crescent, 17% illumination | Tuesday, September 8, 2026. Low aurora activity. Aurora score 1 out of 10. Waning crescent, 9% illumination | Wednesday, September 9, 2026. Low aurora activity. Aurora score 1 out of 10. New moon, 3% illumination | Thursday, September 10, 2026. Low aurora activity. Aurora score 1 out of 10. New moon, 1% illumination | Friday, September 11, 2026. Low aurora activity. Aurora score 1 out of 10. New moon, 0% illumination |
LowAurora ActivityHigh
Northern Lights in Ruka
Ruka is situated in Finland's Lapland area. While not directly under the standard auroral oval, its northern location at 66.2° makes it a very reliable viewing spot. Observers here simply need to escape local light pollution and look north on a clear night.
Aurora Season in Ruka
You can spot the aurora here anytime from September to March. While the dark winter months are most popular, the autumn and spring equinoxes often bring a statistical increase in geomagnetic activity.
FAQ
What Kp index do I need to see the northern lights in Ruka?
In Ruka, 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 2.0 to 3.0. That is above the usual Kp index threshold for Ruka, so you have a chance of seeing the aurora if the sky is clear.