Swansea weather
UK towns · Wales · 51.62°N 3.94°W
Swansea, in Wales, has its warmest weather in August, when daytime temperatures average 19.7°C, while January nights are the coldest at around 3.2°C. The town sees roughly 1657mm of rain a year; October is normally the wettest month and April the driest. Figures are averaged from 2020–2024 observations.
Climate averages
| Month | Avg high | Avg low | Rain | Rain days |
|---|---|---|---|---|
| Jan | 8° | 3.2° | 151mm | 14 |
| Feb | 9.3° | 4.5° | 162mm | 18 |
| Mar | 10.4° | 4.6° | 135mm | 16 |
| Apr | 12.8° | 5.5° | 72mm | 11 |
| May | 15.8° | 8.9° | 104mm | 15 |
| Jun | 18.5° | 11.5° | 82mm | 14 |
| Jul | 19.3° | 13° | 128mm | 17 |
| Aug | 19.7° | 13.8° | 122mm | 18 |
| Sep | 18.2° | 12.2° | 141mm | 15 |
| Oct | 14.8° | 10.2° | 211mm | 22 |
| Nov | 11.5° | 6.8° | 143mm | 17 |
| Dec | 9.1° | 5° | 206mm | 19 |
Swansea weather FAQs
What is the warmest month in Swansea?
August is typically the warmest month in Swansea, with average daytime highs of 19.7°C. Summer afternoons (June–August) average around 19.2°C.
What is the wettest month in Swansea?
October is usually the wettest month, with around 211mm of rain over roughly 22 rainy days. April is typically the driest (72mm).
How much does it rain in Swansea per year?
Swansea receives roughly 1657mm of precipitation per year, spread over about 196 days with at least 1mm of rain (based on 2020–2024 observations).
How cold are winters in Swansea?
Winter nights (December–February) in Swansea average around 4.2°C, with January typically the coldest month (average low 3.2°C).