Tromsø vs Reykjavík

Aurora forecast comparison — updated hourly

Tonight's Verdict
🇳🇴
Tromsø
Peak: Oct–Mar
Skip it
Maybe
Book it
✅ Great night — book it!
Kp tonight5.7
Clouds (ECMWF)0%
Aurora probability12%
🇮🇸
Reykjavík
Peak: Sep–Mar
Skip it
Maybe
Book it
🚫 Not tonight — too cloudy
Kp tonight2.3
Clouds (ECMWF)99%
Aurora probability8%
Head-to-Head
Metric🇳🇴 Tromsø🇮🇸 Reykjavík
Latitude69.7°N64.1°N
Kp for overhead auroraKp 1+Kp 1+
Kp for good displayKp 3+Kp 2+
Cloud cover (ECMWF)0%99%
Cloud cover (GFS)12%100%
Dark hours4.8h4.1h
Aurora probability12%8%
Solar wind speed346 km/s346 km/s
Bz value+1.1 nT+1.1 nT
Best window tonight22h (0%)00h (98%)

Highlighted cell = better value for aurora viewing

Next 3 Nights
Night🇳🇴 Tromsø🇮🇸 Reykjavík
Fri, Apr 17
✓
0%
Kp 5.7
✗
99%
Kp 2.3
Sat, Apr 18
✓
0%
Kp 6.0
✗
77%
Kp 5.7
Sun, Apr 19
✓
17%
Kp 5.0
✓
42%
Kp 6.0
Which should I choose?

Tromsø vs Reykjavík — Which should I choose?

Both cities require Kp 1+ to see aurora overhead, placing them at a similar position relative to the auroral oval. Tonight Tromsø has the clearer sky at 0% cloud cover versus 99% for the other city. Tromsø: Inside the auroral oval — peak aurora season September to March. Reykjavík: Iceland's capital — combine northern lights with Golden Circle tours.

Full Forecasts
🇳🇴View full Tromsø forecast→🇮🇸View full Reykjavík forecast→
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