Weather in Cardiff in March 2025
Average weather
Average temperature in Cardiff in March
The temperature in March is +52°F on average, with a range between a maximum of +59°F during the day and a minimum of +30°F at night.
The average maximum temperature goes up 25% by the end of the month, compared with the beginning of the month, from +46°F to +54°F.
Is Cardiff warm or cold in March?
Cardiff is typically chill in March.
Maximum temperatures go up compared to the previous month from +46°F to +50°F. The minimum temperature also goes up from +37°F to +41°F.
Pack a jumper and a jacket as there will be cooler temperatures.
Take a look at how March is compared to other months in Cardiff:
Water temperature in Cardiff in March
Water in Cardiff in March is Cold. It varies from +45°F to +49°F, with an average of +47°F. This is almost similar to the air temperature, which averages +50°F.
The water temperature in March is one of the coldest of the entire year:
Can you swim in Cardiff in March?
Climate in Cardiff in March
| February | March | April | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +46°F | +50°F | +55°F | ||||
| Min. temperature | ||||||
| +18°F | +21°F | +28°F | ||||
| Max. temperature | ||||||
| +63°F | +68°F | +77°F | ||||
| Rainfall | ||||||
| 71 mm | 74 mm | 63 mm | ||||
| Wind | ||||||
| 5 m/s | 5 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +47°F | +47°F | +49°F | ||||
| Humidity | ||||||
| 82% | 80% | 76% | ||||
| Air pressure | ||||||
| 1015 HPa | 1014 HPa | 1014 HPa | ||||
| Sunny days | ||||||
| 2 | 3 | 5 | ||||
| Cloudy days | ||||||
| 10 | 11 | 10 | ||||
| Rainy days | ||||||
| 14 | 16 | 15 | ||||
| Snowy days | ||||||
| 2 | 1 | 0 | ||||
March weather is still as ok as in February. It’s getting warmer as March arrives. The average maximum temperature goes up from +46°F to +50°F during the day. Prepare for more rain. Average rainfall goes from 71 mm to 74 mm. It feels drier, as humidity decreases from 82% to 80%. The average wind speed doesn’t change much during March, staying around 5 m/s. The good news is there are likely to be more sunny days in March, from 2 to 3.
April brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Cardiff is gradually increasing during March, going from 4 m/s to 8 m/s over the course of the month.
Rain
Snow
Here’s how March is compared with other months in the amount of snow, total mm:
How was the weather last March in Cardiff?
Climate Change Over the Years
The climate in Cardiff in March has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+53°F) and the highest in 2022 (+60°F). The driest year was 2010 with only 736 mm of rainfall, and the wettest year was 2022 with 1906 mm.
FAQ
Is March a good time to visit Cardiff?
Can you sunbathe in Cardiff in March?
Can you swim in Cardiff in March?
Is Cardiff rainy in March?
Is it sunny in Cardiff in March?
Other cities in United Kingdom
Monthly weather in Cardiff
Source of the data
For this page, we’ve looked at the typical weather in Cardiff, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.