The temperatures in Carmarthen in May are quite cold with temperatures between 8°C and 14°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Carmarthen 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 Carmarthen in May 2024.
If you’re planning to visit Carmarthen in the near future, we highly recommend that you review the 14 day weather forecast for Carmarthen before you arrive.
Temperatures
14° / 8°
Rainy Days
6
Snowy Days
0
Dry Days
25
Rainfall
79
mm
Sun Hours
8.4
Hrs