Weather in Southampton in September
In an average September, Southampton sees a daily high around 18°C and a low around 11°C, based on 1980–2026 of local climate records.
| Average high | 18°C |
|---|---|
| Typical high range | 15°C to 22°C |
| Average low | 11°C |
| Typical low range | 8°C to 14°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
29°C
2023-09-09
Lowest
10°C
1986-09-15
Low
Highest
19°C
2023-09-07
Lowest
2°C
2003-09-24
Feels-like
Highest
34°C
2023-09-09
Lowest
-1°C
2018-09-25
Humidity
Highest
16.0 g/m³
2023-09-07
Lowest
5.8 g/m³
2003-09-24
Wind
Highest
51 km/h
1981-09-19
Lowest
6 km/h
2020-09-01
Gust
Highest
107 km/h
1981-09-19
Lowest
11 km/h
1985-09-24
Precip
Wettest
174 mm
2024
Driest
12 mm
2003
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