Northern Lights Forecast — Grótta Lighthouse, Iceland
Closest escape from city light — a lighthouse point with open northern horizon.
Tonight · Grótta
Not likely tonight
Overcast skies will hide anything happening above.
- Kp index
- 3.0
- Aurora probability
- 8%
- Cloud cover
- 100%
- Moon
- 62% lit
Dark sky window 05:22 – 05:42 (20 min of true darkness)
0/100
Your next nights
7-night outlook for Grótta
| Night | Verdict | Score | Cloud | Moon | Confidence |
|---|---|---|---|---|---|
| Tonight | Not likely | 24 | 40% | 69% | forecast |
| Mon 21 Sept | Not likely | 0 | 20% | 78% | forecast |
| The remaining 5 nights of your trip live in the app — get Aurora Iceland. | |||||
Hunting from Grótta this week?
The Aurora Iceland app adds hour-by-hour best windows and directions to every dark spot — both free — plus wake-me-up alerts and tonight’s ranked best spots on the 14-day Aurora Pass. One payment covers your whole trip.