The temperatures in Swansea in May are quite cold with temperatures between 9°C and 14°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Swansea during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Swansea in May 2025.
If you’re planning to visit Swansea in the near future, we highly recommend that you review the 14 day weather forecast for Swansea before you arrive.
Temperatures
14° / 9°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
50
mm
Sun Hours
8.7
Hrs
