United Kingdom
Weather in Swansea through the year
The average of the weather stations Oxford (185 km), Valley (186 km) and Dublin Phoenix Park (252 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 8.2 °C | 8.0 °C – 8.5 °C |
| February | 8.8 °C | 8.3 °C – 9.2 °C |
| March | 10.8 °C | 9.2 °C – 12.0 °C |
| April | 13.3 °C | 12.1 °C – 14.6 °C |
| May | 16.5 °C | 14.7 °C – 18.0 °C |
| June | 19.2 °C | 18.0 °C – 20.3 °C |
| July | 20.9 °C | 20.2 °C – 21.3 °C |
| August | 20.5 °C | 19.6 °C – 21.1 °C |
| September | 18.2 °C | 16.5 °C – 19.6 °C |
| October | 14.6 °C | 12.7 °C – 16.4 °C |
| November | 10.9 °C | 9.4 °C – 12.6 °C |
| December | 8.9 °C | 8.3 °C – 9.3 °C |