What is the weather like in Oslo vs Trondheim in September?

In September, Oslo averages 18°C high / 10°C low with about 93 mm of rain; Trondheim averages 16°C high / 8°C low with about 96 mm.

Oslo vs Trondheim in September

Oslo and Trondheim are nearly tied in September — 74 vs 75 on SeasonMap's comfort score. Oslo is nice, rainy, clean air; Trondheim is cool, rainy, clean air.

Oslo vs Trondheim — September climate, side by side

	Oslo	Trondheim
Comfort score	74/100 (B)	75/100 (B)
Feels-like high	16°C	15°C
Avg high / low	18° / 10°	16° / 8°
Rainfall	93 mm	96 mm
Rainy days	10	12
Humidity	82%	83%
Air quality (AQI)	38	27

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

Oslo vs Trondheim in September — FAQ

Is September better in Oslo or Trondheim?: Oslo and Trondheim are nearly tied in September — 74 vs 75 on SeasonMap's comfort score. Oslo is nice, rainy, clean air; Trondheim is cool, rainy, clean air.
What is the weather like in Oslo vs Trondheim in September?: In September, Oslo averages 18°C high / 10°C low with about 93 mm of rain; Trondheim averages 16°C high / 8°C low with about 96 mm.