The weather in Carmarthen in March is very cold with temperatures between 4°C and 10°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Carmarthen during the month of March. 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 March 2025.
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
10° / 4°
Rainy Days
7
Snowy Days
0
Dry Days
24
Rainfall
79
mm
Sun Hours
7.9
Hrs
