Cardiff weather by month

Check out Cardiff weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Cardiff (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
45°F maximum daytime temperature in January in Cardiff45
45°F maximum daytime temperature in February in Cardiff45
50°F maximum daytime temperature in March in Cardiff50
54°F maximum daytime temperature in April in Cardiff54
61°F maximum daytime temperature in May in Cardiff61
66°F maximum daytime temperature in June in Cardiff66
68°F maximum daytime temperature in July in Cardiff68
68°F maximum daytime temperature in August in Cardiff68
64°F maximum daytime temperature in September in Cardiff64
57°F maximum daytime temperature in October in Cardiff57
50°F maximum daytime temperature in November in Cardiff50
46°F maximum daytime temperature in December in Cardiff46
Min temperature (night-time)
36°F minimum night-time temperature in January in Cardiff36
36°F minimum night-time temperature in February in Cardiff36
37°F minimum night-time temperature in March in Cardiff37
39°F minimum night-time temperature in April in Cardiff39
45°F minimum night-time temperature in May in Cardiff45
50°F minimum night-time temperature in June in Cardiff50
54°F minimum night-time temperature in July in Cardiff54
54°F minimum night-time temperature in August in Cardiff54
50°F minimum night-time temperature in September in Cardiff50
46°F minimum night-time temperature in October in Cardiff46
41°F minimum night-time temperature in November in Cardiff41
37°F minimum night-time temperature in December in Cardiff37
Heat & Humidity
No heat & humidity in January in Cardiff0
No heat & humidity in February in Cardiff0
No heat & humidity in March in Cardiff0
No heat & humidity in April in Cardiff0
No heat & humidity in May in Cardiff0
No heat & humidity in June in Cardiff0
No heat & humidity in July in Cardiff0
No heat & humidity in August in Cardiff0
No heat & humidity in September in Cardiff0
No heat & humidity in October in Cardiff0
No heat & humidity in November in Cardiff0
No heat & humidity in December in Cardiff0
Sea temperature
46°F sea temperature in January in Cardiff46
45°F sea temperature in February in Cardiff45
46°F sea temperature in March in Cardiff46
48°F sea temperature in April in Cardiff48
54°F sea temperature in May in Cardiff54
59°F sea temperature in June in Cardiff59
63°F sea temperature in July in Cardiff63
64°F sea temperature in August in Cardiff64
63°F sea temperature in September in Cardiff63
57°F sea temperature in October in Cardiff57
52°F sea temperature in November in Cardiff52
48°F sea temperature in December in Cardiff48

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Cardiff

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
8 hours of daylight per day in January in Cardiff8
10 hours of daylight per day in February in Cardiff10
12 hours of daylight per day in March in Cardiff12
14 hours of daylight per day in April in Cardiff14
16 hours of daylight per day in May in Cardiff16
17 hours of daylight per day in June in Cardiff17
16 hours of daylight per day in July in Cardiff16
15 hours of daylight per day in August in Cardiff15
13 hours of daylight per day in September in Cardiff13
11 hours of daylight per day in October in Cardiff11
9 hours of daylight per day in November in Cardiff9
8 hours of daylight per day in December in Cardiff8
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Cardiff1
UV (maximum) index 1 (Low) in February in Cardiff1
UV (maximum) index 3 (Moderate) in March in Cardiff3
UV (maximum) index 4 (Moderate) in April in Cardiff4
UV (maximum) index 5 (Moderate) in May in Cardiff5
UV (maximum) index 6 (High) in June in Cardiff6
UV (maximum) index 6 (High) in July in Cardiff6
UV (maximum) index 6 (High) in August in Cardiff6
UV (maximum) index 4 (Moderate) in September in Cardiff4
UV (maximum) index 2 (Low) in October in Cardiff2
UV (maximum) index 1 (Low) in November in Cardiff1
No UV (maximum) index in December in Cardiff0

Rainfall in Cardiff

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
20 days with some rainfall in January in Cardiff20
15 days with some rainfall in February in Cardiff15
17 days with some rainfall in March in Cardiff17
15 days with some rainfall in April in Cardiff15
15 days with some rainfall in May in Cardiff15
14 days with some rainfall in June in Cardiff14
13 days with some rainfall in July in Cardiff13
15 days with some rainfall in August in Cardiff15
15 days with some rainfall in September in Cardiff15
18 days with some rainfall in October in Cardiff18
18 days with some rainfall in November in Cardiff18
19 days with some rainfall in December in Cardiff19
Average monthly rainfall (inches)
4.1 inches monthly rainfall in January in Cardiff4.1
3.0 inches monthly rainfall in February in Cardiff3.0
3.1 inches monthly rainfall in March in Cardiff3.1
2.4 inches monthly rainfall in April in Cardiff2.4
2.6 inches monthly rainfall in May in Cardiff2.6
2.6 inches monthly rainfall in June in Cardiff2.6
2.6 inches monthly rainfall in July in Cardiff2.6
3.2 inches monthly rainfall in August in Cardiff3.2
3.6 inches monthly rainfall in September in Cardiff3.6
4.0 inches monthly rainfall in October in Cardiff4.0
4.1 inches monthly rainfall in November in Cardiff4.1
4.3 inches monthly rainfall in December in Cardiff4.3

More about Cardiff

Cardiff by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Wales (Cardiff) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Cardiff?

Cardiff has a temperate climate with warm summers and some rainfall in all months.

Metric (°C)  |  Imperial (°F)

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Tropical storm risk: Cardiff hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
0
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about Wales

Compare Cardiff with the USA

Below the Cardiff chart shows average maximum daytime temperature for Cardiff, Wales, UK and the USA (Washington).

Maximum daytime temperature (°F)

Cardiff, Wales, UK
USA (Washington)
45
41
45
45
50
55
54
66
61
75
66
84
68
88
68
86
64
79
57
68
50
57
46
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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