September weather in London, United Kingdom
Averages from 150 days in September across 2020–2024.
Typical conditions
| Average high | 20.5°C |
|---|---|
| Average low | 12.1°C |
| Average mean | 16.1°C |
| Total precipitation | 349.9 mm |
| Rainy days | 91 |
| Average precipitation hours | 3.8 h |
| Average max wind speed | 20 km/h |
| Average sunshine | 8.6 h/day |
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