Carmarthen Weather in November
What's the weather like in Carmarthen (Wales) in November 2025?
The climate in Carmarthen during November can be summarized as cool and wet.
November is in the fall / autumn in Carmarthen and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 10°C (50°F), whilst at night 4°C (39°F) is normal.
| Daytime temperature | 9.9°C 49.7°F |
|---|---|
| Nightly temperature | 4°C 39.1°F |
| Average temperature | 6.9°C 44.4°F |
| Daily sunshine | 2.5 hrs |
| Avg rainfall | 154 mm 6.1 ins |
| Rainy days | 20 days |
| Sea temperature | 12.8°C 55.1°F |
| Humidity | 90% |
| Windspeed | 23.4kph 15 mph |
On average November is the 4th wettest month of the year in Carmarthen with around 154mm 6.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 2.5 hours of sunshine per day.
November temperatures in Carmarthen
November rainfall
November hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Carmarthen in November 2025.
Other monthly averages
Best places to visit in November
Carmarthen weather stats
| Hottest month: | July | 18.6°C 65.5°F |
|---|---|---|
| Driest month: | April | 84mm 3.3ins |
| Sunniest month: | May | 6.9hrs |
| Coldest month: | February | 6.8°C 44.2°F |
| Wettest month: | December | 162mm 6.4ins |
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