7 to 19°C
temperature
2278 hours
sunshine per day
153 mm
rain
248 days
dry
114 days
rain
3 days
snow

Climate of Cardiff

Cardiff has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Cardiff is 13° degrees and there is about 153 mm of rain in a year. It is dry for 207 days a year with an average humidity of 84% and an UV-index of 3.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 7°C and 19°C
  • Night:the average nighttime temperature is between 4°C and 13°C
  • Sea temperature: the sea temperature is between 10°C and 18°C
  • Rain: it rains 114 days and there is a total of approximately 153 mm rainfall
  • Snow: it snows an average of 3 days per year
  • Sun hours: throughout the year there are 2278 sun hours
Maximum temperature: between 7°C and 19°C
Warmest month: 19°C in July
Coldest month: 7°C in January
Night temperature: between 4°C and 13°C
Sea temperature: between 10°C and 18°C
Dry days: 248 days
Days with rain: 114 days
Days with snow: 3 days
Total rain sum: 153 mm
Hours of sunshine: 2278 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Cardiff.

Precipitation graph

This graph shows the average amount of rainfall per month for Cardiff.

Climate table of Cardiff

In this climate table you can see at a glance what the average weather per month is for Cardiff. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Cardiff might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 7 8 10 12 15 17 19 18 17 14 11 9
Night temp. (°C) 4 4 4 6 8 11 13 13 11 10 7 5
Water temp. (°C) 11 10 10 11 13 15 17 17 18 17 15 13
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 12 12 12 5 15 10 10 15 8 15 20 19
Days with rain 10 7 9 8 9 8 10 11 9 9 12 12
Days with snow 1 1 - - - - - - - - - 1
Dry days 20 20 22 22 22 22 21 20 21 22 18 18
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 4 6 8 8 8 8 8 7 5 4 4
Wind force (Bft) 4 4 4 3 3 3 3 3 3 3 4 4
UV-index 2 2 2 3 4 4 4 4 4 3 2 2

Best time to visit Cardiff

The best time to visit Cardiff in Wales is in July and August. In this period you have a pleasant temperature and almost no precipitation. The highest average temperature in Cardiff is 19°C in July and the lowest is 7°C in January. The highest water temperature is 18°C and at its coldest the water is 10°C.

Climate of Cardiff by month

What is the average climate in a given month for Cardiff? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Cardiff weather experiences

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