Weather in London in September
In an average September, London sees a daily high around 22°C and a low around 12°C, based on 1980–2026 of local climate records.
| Average high | 22°C |
|---|---|
| Typical high range | 17°C to 27°C |
| Average low | 12°C |
| Typical low range | 6°C to 18°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
33°C
2013-09-10
Lowest
9°C
1981-09-30
Low
Highest
24°C
2016-09-08
Lowest
-2°C
1993-09-30
Feels-like
Highest
45°C
2013-09-10
Lowest
-7°C
1993-09-30
Humidity
Highest
21.2 g/m³
2016-09-07
Lowest
4.3 g/m³
1993-09-30
Wind
Highest
40 km/h
2003-09-27
Lowest
6 km/h
1996-09-03
Gust
Highest
93 km/h
2003-09-27
Lowest
13 km/h
2014-09-28
Precip
Wettest
243 mm
1986
Driest
30 mm
1998
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