Swansea Weather in March
What's the weather like in Swansea (Wales) in March 2025?
The climate in Swansea during March can be summarized as cool and a little damp.
March is in the spring in Swansea and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 9°C (49°F), whilst at night 4°C (38°F) is normal.
| Daytime temperature | 9.3°C 48.7°F |
|---|---|
| Nightly temperature | 3.6°C 38.4°F |
| Average temperature | 6.4°C 43.5°F |
| Daily sunshine | 4 hrs |
| Avg rainfall | 96 mm 3.8 ins |
| Rainy days | 18 days |
| Sea temperature | 9.2°C 48.6°F |
| Humidity | 85% |
| Windspeed | 20.5kph 13 mph |
On average March is the 6th driest month of the year in Swansea with around 96mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 4 hours of sunshine per day.
March temperatures in Swansea
March rainfall
March 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 Swansea in March 2025.
Other monthly averages
Swansea weather stats
| Hottest month: | July | 19.5°C 67.1°F |
|---|---|---|
| Driest month: | April | 69mm 2.7ins |
| Sunniest month: | May | 7hrs |
| Coldest month: | February | 7.2°C 45°F |
| Wettest month: | December | 140mm 5.5ins |
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