Aurora forecast Joensuu
Northern Lights tonight in Joensuu
Updated
Low chance tonight (Kp 1.7 forecast; needs about Kp 3 at Joensuu) A camera may pick up a faint glow on the horizon if activity runs above forecast.
Will you see the northern lights from Joensuu, North Karelia, Finland tonight? We combine NOAA's Kp forecast, the OVATION aurora model, cloud cover and the hours of darkness. Times are local (Europe/Helsinki).
- Kp now
- 1.7 quiet, estimated
- Max Kp forecast tonight
- 1.7 quiet
- Kp needed at Joensuu
- about 3 geomagnetic latitude 59.4°
- Cloud cover tonight
- 100% average lowest 100%
- Dark sky
- 5:54 pm – 5:39 am Sun 12° below the horizon
- Aurora probability in view now
- 6% NOAA OVATION, 30–90 min ahead
- Moon
- 99% lit Full Moon
Tonight in Joensuu
Joensuu sits at a geomagnetic latitude of 59.4° N, so the aurora usually needs a Kp index of about 3 or higher before it rises above the northern horizon. Tonight's NOAA forecast peaks at Kp 1.7 (quiet) during the dark hours, 1.3 short of what Joensuu needs.
Open-Meteo expects about 100% cloud cover on average between 6 pm and 6 am local time, with no mostly clear hours.
The Moon is 99% illuminated (full moon), bright enough to wash out a faint aurora, so only a stronger display will stand out. For the best view look north, low on the horizon, from somewhere away from street lights.
Right now NOAA's OVATION model gives up to 6% chance of aurora in the part of the sky visible from Joensuu. OVATION is a short-range nowcast (30 to 90 minutes ahead), useful for deciding whether to step outside now.
| Local time | Kp forecast | Cloud cover | Aurora chance |
|---|---|---|---|
| Mon 6 pm | 1.3 | 100% | Unlikely |
| Mon 7 pm | 1.3 | 100% | Unlikely |
| Mon 8 pm | 1.7 | 100% | Low |
| Mon 9 pm | 1.7 | 100% | Low |
| Mon 10 pm | 1.7 | 100% | Low |
| Mon 11 pm | 1.7 | 100% | Low |
| Tue 12 am | 1.7 | 100% | Low |
| Tue 1 am | 1.7 | 100% | Low |
| Tue 2 am | 1.7 | 100% | Low |
| Tue 3 am | 1.7 | 100% | Low |
| Tue 4 am | 1.7 | 100% | Low |
| Tue 5 am | 1.3 | 100% | Unlikely |
3-day Kp forecast
None of the next 3 days reaches the Kp 3 that Joensuu needs. Kp is a global 0–9 index of geomagnetic activity, issued in 3-hour blocks (UTC); NOAA forecasts beyond 24 hours are uncertain, because storms are triggered by solar eruptions that take 1–3 days to arrive.
| Day (UTC) | Max Kp | Level | Enough for Joensuu? |
|---|---|---|---|
| 2026-10-26 | 1.7 | quiet | No |
| 2026-10-27 | 1.7 | quiet | No |
| 2026-10-28 | 1.7 | quiet | No |
Why Joensuu needs Kp 3
The aurora forms in an oval around the geomagnetic pole, which sits in the Canadian Arctic (about 80.8° N, 72.8° W), not at the geographic pole. That is why the Kp a city needs depends on its geomagnetic rather than its geographic latitude. At Kp 0 the oval's edge is near 66° geomagnetic; each step of Kp pushes it roughly 2° toward the equator.
At 59.4° geomagnetic, Joensuu needs about Kp 3 for aurora low on the horizon, Kp 5 or more for a display high in the sky. Oulu, 346 km away, needs about Kp 1.
Aurora forecast for nearby cities
More sky and weather
Data: NOAA SWPC (Kp, OVATION), Open-Meteo, GeoNames.