The temperatures in Swansea in August are quite cold with temperatures between 6°C and 13°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Swansea during the month of August. 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 August 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
13° / 6°
Rainy Days
4
Snowy Days
0
Dry Days
27
Rainfall
83
mm
Sun Hours
6.6
Hrs
