Climate in Cardiff (Wales), United Kingdom

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Average monthly minimum and maximum temperature in Cardiff, the United Kingdom

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Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Average monthly hours of sunshine in Cardiff, the United Kingdom

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Daily percent of sunshine

The mean percent of hours of sunhours during the day over the year

Average monthly percentage of sunshine in Cardiff, the United Kingdom

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Average water temperature

The mean water temperature over the year.

Average monthly water temperature in Cardiff, the United Kingdom

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Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Average monthly rainfall, snow, precipitation in Cardiff, the United Kingdom

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Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average monthly rainy days in Cardiff, the United Kingdom

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Average humidity

The mean monthly relative humidity over the year

Average monthly relative humidity in Cardiff, the United Kingdom

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Average wind speed

The mean monthly wind speed over the year (in meters per second)

Average monthly wind speed in Cardiff, the United Kingdom

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Weather Forecasts for Cardiff

Thu   Mar 28
11°C | 2°C
S 29 km/h
5.8 mm
broken clouds and rain

broken clouds and rain

Fri   Mar 29
12°C | 5°C
SW 25 km/h
8.3 mm
partly cloudy and rain

partly cloudy and rain

Sat   Mar 30
13°C | 5°C
S 18 km/h
2 mm
partly cloudy and  chance of rain

partly cloudy and chance of rain

The best time of year to visit Cardiff in the United Kingdom

During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Which is the warmest month in Cardiff?
    August has an average maximum temperature of 20°C and is the warmest month of the year.
  • Which is the coldest month in Cardiff?
    The coldest month is February with an average maximum temperature of 9°C.
  • Which is the wettest month in Cardiff?
    December tops the wettest month list with 119 mm of rainfall.
  • Which is the driest month in Cardiff?
    March is the driest month with 76 mm of precipitation.
  • Which is the sunniest month in Cardiff?
    July is the sunniest month with an average of 202 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.