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

In September, London averages 21°C high / 12°C low with about 56 mm of rain; Trondheim averages 16°C high / 8°C low with about 96 mm.

London vs Trondheim in September

London is the better pick in September — 84 vs 75 on SeasonMap's comfort score. London is nice, a little rain, clean air, while Trondheim is cool, rainy, clean air.

London vs Trondheim — September climate, side by side

	London	Trondheim
Comfort score	84/100 (A)	75/100 (B)
Feels-like high	19°C	15°C
Avg high / low	21° / 12°	16° / 8°
Rainfall	56 mm	96 mm
Rainy days	11	12
Humidity	78%	83%
Air quality (AQI)	46	27

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

London vs Trondheim in September — FAQ

Is September better in London or Trondheim?: London is the better pick in September — 84 vs 75 on SeasonMap's comfort score. London is nice, a little rain, clean air, while Trondheim is cool, rainy, clean air.
What is the weather like in London vs Trondheim in September?: In September, London averages 21°C high / 12°C low with about 56 mm of rain; Trondheim averages 16°C high / 8°C low with about 96 mm.