Swansea, Wales, United Kingdom climate
Average temperatures, precipitation and all-time records for Swansea, Wales, United Kingdom, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is July, averaging a high of 19°C, and its coldest is February, with an average low of 4°C.
Swansea is a port and coastal city in Wales. It is the second-largest city in the country. The city forms a principal area, officially known as the City and County of Swansea. via Wikipedia
How today compares
Latest recorded day: 2026-07-21. Each reading placed on Swansea, Wales, United Kingdom's own ±7-day seasonal distribution.
Swansea average temperatures by month
Typical daily high and low, and average precipitation, for each month in Swansea, Wales, United Kingdom, based on 1981–2026 records. The wettest month is November (5 mm on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 7°C | 4°C | 3 mm |
| February | 7°C | 4°C | 3 mm |
| March | 9°C | 5°C | 3 mm |
| April | 11°C | 6°C | 3 mm |
| May | 14°C | 8°C | 3 mm |
| June | 17°C | 11°C | 3 mm |
| July | 19°C | 14°C | 3 mm |
| August | 19°C | 14°C | 3 mm |
| September | 17°C | 12°C | 3 mm |
| October | 14°C | 10°C | 3 mm |
| November | 11°C | 7°C | 5 mm |
| December | 8°C | 5°C | 5 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.
Thinking of visiting Swansea?
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Record extremes
- Hottest day on record: 28°C on 2026-07-10
- Coldest day on record: -7°C on 1987-01-13
Percentiles compare each day to Swansea, Wales, 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 →