Southampton, England, United Kingdom climate
Average temperatures, precipitation and all-time records for Southampton, England, United Kingdom, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is July, averaging a high of 21°C, and its coldest is January, with an average low of 3°C.
Southampton is a port city and unitary authority in Hampshire, England. It is located approximately 80 miles (130 km) southwest of London, 20 miles (32 km) west of Portsmouth, and 20 miles (32 km) southeast of Salisbury. via Wikipedia
How today compares
Latest recorded day: 2026-09-07. Each reading placed on Southampton, England, United Kingdom's own ±7-day seasonal distribution.
Southampton average temperatures by month
Typical daily high and low, and average precipitation, for each month in Southampton, England, United Kingdom, based on 1980–2026 records. The wettest month is January (3 mm on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 7°C | 3°C | 3 mm |
| February | 8°C | 3°C | 3 mm |
| March | 10°C | 4°C | 3 mm |
| April | 13°C | 5°C | 3 mm |
| May | 16°C | 8°C | 3 mm |
| June | 19°C | 11°C | 3 mm |
| July | 21°C | 13°C | 3 mm |
| August | 21°C | 13°C | 3 mm |
| September | 18°C | 11°C | 3 mm |
| October | 14°C | 8°C | 3 mm |
| November | 11°C | 5°C | 3 mm |
| December | 8°C | 3°C | 3 mm |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -23°C to 46°C scale, so the whole year's rhythm reads at a glance.
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Record extremes
- Hottest day on record: 34°C on 2026-06-24
- Coldest day on record: -12°C on 1981-12-12
Percentiles compare each day to Southampton, England, United Kingdom's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →