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

In September, Dublin averages 18°C high / 10°C low with about 79 mm of rain; London averages 21°C high / 12°C low with about 56 mm.

Dublin vs London in September

London is the better pick in September — 84 vs 80 on SeasonMap's comfort score. London is nice, a little rain, clean air, while Dublin is nice, a little rain, clean air.

Dublin vs London — September climate, side by side

	Dublin	London
Comfort score	80/100 (A)	84/100 (A)
Feels-like high	16°C	19°C
Avg high / low	18° / 10°	21° / 12°
Rainfall	79 mm	56 mm
Rainy days	13	11
Humidity	81%	78%
Air quality (AQI)	36	46

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

Dublin vs London in September — FAQ

Is September better in Dublin or London?: London is the better pick in September — 84 vs 80 on SeasonMap's comfort score. London is nice, a little rain, clean air, while Dublin is nice, a little rain, clean air.
What is the weather like in Dublin vs London in September?: In September, Dublin averages 18°C high / 10°C low with about 79 mm of rain; London averages 21°C high / 12°C low with about 56 mm.