Tromsø vs Reykjavík

Aurora forecast comparison — updated hourly

Tonight's Verdict

🇳🇴

Tromsø

Peak: Oct–Mar

Skip it

Maybe

Book it

🚫 Not tonight — too cloudy

Kp tonight4.0

Clouds (ECMWF)99%

Aurora probability10%

🇮🇸

Reykjavík

Peak: Sep–Mar

Skip it

Maybe

Book it

🚫 Not tonight — too cloudy

Kp tonight4.0

Clouds (ECMWF)80%

Aurora probability7%

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)99%80%

Cloud cover (GFS)100%100%

Dark hours4.8h6.6h

Aurora probability10%7%

Solar wind speed––

Bz value––

Best window tonight23h (98%)22h (62%)

Highlighted cell = better value for aurora viewing

Next 3 Nights

Night🇳🇴 Tromsø🇮🇸 Reykjavík

Sun, Sep 27

✗

99%

Kp 4.0

✗

80%

Kp 4.0

Mon, Sep 28

✗

55%

Kp 2.0

41%

Kp 2.0

Tue, Sep 29

✗

75%

Kp 1.7

✗

100%

Kp 1.7

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 Reykjavík has the clearer sky at 80% cloud cover versus 99% for the other city. Reykjavík offers 6.6h of darkness tonight — a longer window to catch a display. 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→