Cardiff Weather in March

What's the weather like in Cardiff (Wales) in March 2025?

The climate in Cardiff during March can be summarized as cool and reasonably dry.

March is in the spring in Cardiff and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 10°C (49°F), whilst at night 3°C (37°F) is normal.

Cardiff weather averages (imperial / metric)
Daytime temperature 9.6°C 49.2°F
Nightly temperature 2.9°C 37.1°F
Average temperature 6.2°C 43.2°F
Daily sunshine 4.1 hrs
Avg rainfall 79 mm 3.1 ins
Rainy days 17 days
Sea temperature 9.2°C 48.6°F
Humidity 85%
Windspeed 19.1kph 12 mph

On average March is the 6th driest month of the year in Cardiff with around 79mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.

On the flip side this corresponds to an average of 4.1 hours of sunshine per day.

March temperatures in Cardiff

Cardiff average temperature in March

March rainfall

Cardiff average rain in March

March hourly sunshine

Cardiff average rain in March

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 Cardiff in March 2024.

Other monthly averages

Best places to visit in March

UV index Best time to go?

Cardiff weather stats

Cardiff weather statistics
Hottest month: July 20.2°C 68.4°F
Driest month: April 60mm 2.4ins
Sunniest month: August 6.6hrs
Coldest month: February 7.2°C 45°F
Wettest month: December 109mm 4.3ins
Map showing location of Cardiff (51.48, -3.18) Cardiff map pin © Google

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