Tromsø vs Trondheim in September

Trondheim is the better pick in September — 75 vs 70 on SeasonMap's comfort score. Trondheim is cool, rainy, clean air, while Tromsø is cool, rainy, clean air.

Tromsø vs TrondheimSeptember climate, side by side

TromsøTrondheim
Comfort score70/100 (B)75/100 (B)
Feels-like high10°C15°C
Avg high / low12° / 6°16° / 8°
Rainfall93 mm96 mm
Rainy days1412
Humidity86%83%
Air quality (AQI)2727

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Tromsø vs Trondheim in September — FAQ

Is September better in Tromsø or Trondheim?
Trondheim is the better pick in September — 75 vs 70 on SeasonMap's comfort score. Trondheim is cool, rainy, clean air, while Tromsø is cool, rainy, clean air.
What is the weather like in Tromsø vs Trondheim in September?
In September, Tromsø averages 12°C high / 6°C low with about 93 mm of rain; Trondheim averages 16°C high / 8°C low with about 96 mm.