Hong Kong vs London in September

London is the better pick in September — 82 vs 51 on SeasonMap's comfort score. London is nice, a little rain, clean air, while Hong Kong is sweltering, soaked, very humid.

Hong Kong vs LondonSeptember climate, side by side

Hong KongLondon
Comfort score51/100 (D)82/100 (A)
Feels-like high36°C19°C
Avg high / low30° / 26°20° / 12°
Rainfall224 mm55 mm
Rainy days2010
Humidity83%78%
Air quality (AQI)8446

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

Hong Kong vs London in September — FAQ

Is September better in Hong Kong or London?
London is the better pick in September — 82 vs 51 on SeasonMap's comfort score. London is nice, a little rain, clean air, while Hong Kong is sweltering, soaked, very humid.
What is the weather like in Hong Kong vs London in September?
In September, Hong Kong averages 30°C high / 26°C low with about 224 mm of rain; London averages 20°C high / 12°C low with about 55 mm.