UV Index
UV Index
Today's UV index in Swansea, United Kingdom 
will be up to 5.1, indicating a moderate level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-10
With a UV index reaching up to 5.1 in Swansea, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
The UV index in Swansea is generally low to moderate throughout the year, rarely exceeding 5. It tends to be higher in late spring and summer months, particularly from May to August.
Swansea experiences mild, wet winters and cool, sometimes warm summers. Rainfall is fairly consistent year-round, with slightly drier periods in late spring and summer, and the weather often changes quickly.
Compared to much of the UK, Swansea's coastal location brings milder winters and cooler summers. It is wetter than eastern parts of the UK but less rainy than nearby mountainous areas like Snowdonia in Wales. Nearby countries like Ireland have similar mild, wet climates.
See the UV index hour by hour for Swansea, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.