Cardiff weather

The Cardiff weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for Cardiff, Cardiff Area, Wales.

Cardiff weather averages

Check the Cardiff weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Cardiff, Cardiff Area, Wales.

Max Day Temperature (°C)

Hours of Sunshine (daily)

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

Days with some Rainfall

Min Night Temperature (°C)

Monthly Rainfall (mm)

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Cardiff weather by month

Check the weather for Cardiff, Cardiff Area, Wales for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.

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Cardiff weather in January

The average maximum daytime temperature in Cardiff in January is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 2 hours of sunshine a day in Cardiff during January.

  • 8°C maximum daytime temperature in January in Cardiff8
    8°C max day temperature
  • 2 hours of sunshine per day in January in Cardiff2
    2 hours of sunshine per day
  • 19 days with some rainfall in January in Cardiff19
    19 days with some rainfall
  • 2°C minimum night-time temperature in January in Cardiff2
    2°C min night temperature
  • 105 mm monthly rainfall in January in Cardiff105
    105 mm of monthly rainfall

On average 105 mm (4.1 inches) of rain normally falls in Cardiff during January with rain falling on 19 days of the month.

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Cardiff weather in February

The average maximum daytime temperature in Cardiff in February is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Cardiff during February.

  • 8°C maximum daytime temperature in February in Cardiff8
    8°C max day temperature
  • 3 hours of sunshine per day in February in Cardiff3
    3 hours of sunshine per day
  • 15 days with some rainfall in February in Cardiff15
    15 days with some rainfall
  • 2°C minimum night-time temperature in February in Cardiff2
    2°C min night temperature
  • 79 mm monthly rainfall in February in Cardiff79
    79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Cardiff during February with rain falling on 15 days of the month.

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Cardiff weather in March

The average maximum daytime temperature in Cardiff in March is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 4 hours of sunshine a day in Cardiff during March.

  • 10°C maximum daytime temperature in March in Cardiff10
    10°C max day temperature
  • 4 hours of sunshine per day in March in Cardiff4
    4 hours of sunshine per day
  • 17 days with some rainfall in March in Cardiff17
    17 days with some rainfall
  • 3°C minimum night-time temperature in March in Cardiff3
    3°C min night temperature
  • 76 mm monthly rainfall in March in Cardiff76
    76 mm of monthly rainfall

On average 76 mm (3 inches) of rain normally falls in Cardiff during March with rain falling on 17 days of the month.

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Cardiff weather in April

The average maximum daytime temperature in Cardiff in April is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 5 hours of sunshine a day in Cardiff during April.

  • 12°C maximum daytime temperature in April in Cardiff12
    12°C max day temperature
  • 5 hours of sunshine per day in April in Cardiff5
    5 hours of sunshine per day
  • 14 days with some rainfall in April in Cardiff14
    14 days with some rainfall
  • 4°C minimum night-time temperature in April in Cardiff4
    4°C min night temperature
  • 60 mm monthly rainfall in April in Cardiff60
    60 mm of monthly rainfall

On average 60 mm (2.4 inches) of rain normally falls in Cardiff during April with rain falling on 14 days of the month.

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Cardiff weather in May

The average maximum daytime temperature in Cardiff in May is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 6 hours of sunshine a day in Cardiff during May.

  • 16°C maximum daytime temperature in May in Cardiff16
    16°C max day temperature
  • 6 hours of sunshine per day in May in Cardiff6
    6 hours of sunshine per day
  • 13 days with some rainfall in May in Cardiff13
    13 days with some rainfall
  • 7°C minimum night-time temperature in May in Cardiff7
    7°C min night temperature
  • 61 mm monthly rainfall in May in Cardiff61
    61 mm of monthly rainfall

On average 61 mm (2.4 inches) of rain normally falls in Cardiff during May with rain falling on 13 days of the month.

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Cardiff weather in June

The average maximum daytime temperature in Cardiff in June is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 7 hours of sunshine a day in Cardiff during June.

  • 18°C maximum daytime temperature in June in Cardiff18
    18°C max day temperature
  • 7 hours of sunshine per day in June in Cardiff7
    7 hours of sunshine per day
  • 13 days with some rainfall in June in Cardiff13
    13 days with some rainfall
  • 10°C minimum night-time temperature in June in Cardiff10
    10°C min night temperature
  • 61 mm monthly rainfall in June in Cardiff61
    61 mm of monthly rainfall

On average 61 mm (2.4 inches) of rain normally falls in Cardiff during June with rain falling on 13 days of the month.

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Cardiff weather in July

The average maximum daytime temperature in Cardiff in July is a comfortable 21°C (70°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 6 hours of sunshine a day in Cardiff during July.

  • 21°C maximum daytime temperature in July in Cardiff21
    21°C max day temperature
  • 6 hours of sunshine per day in July in Cardiff6
    6 hours of sunshine per day
  • 12 days with some rainfall in July in Cardiff12
    12 days with some rainfall
  • 12°C minimum night-time temperature in July in Cardiff12
    12°C min night temperature
  • 54 mm monthly rainfall in July in Cardiff54
    54 mm of monthly rainfall

On average 54 mm (2.1 inches) of rain normally falls in Cardiff during July with rain falling on 12 days of the month.

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Cardiff weather in August

The average maximum daytime temperature in Cardiff in August is a comfortable 21°C (70°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 6 hours of sunshine a day in Cardiff during August.

  • 21°C maximum daytime temperature in August in Cardiff21
    21°C max day temperature
  • 6 hours of sunshine per day in August in Cardiff6
    6 hours of sunshine per day
  • 14 days with some rainfall in August in Cardiff14
    14 days with some rainfall
  • 12°C minimum night-time temperature in August in Cardiff12
    12°C min night temperature
  • 77 mm monthly rainfall in August in Cardiff77
    77 mm of monthly rainfall

On average 77 mm (3 inches) of rain normally falls in Cardiff during August with rain falling on 14 days of the month.

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Cardiff weather in September

The average maximum daytime temperature in Cardiff in September is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Cardiff during September.

  • 18°C maximum daytime temperature in September in Cardiff18
    18°C max day temperature
  • 5 hours of sunshine per day in September in Cardiff5
    5 hours of sunshine per day
  • 14 days with some rainfall in September in Cardiff14
    14 days with some rainfall
  • 10°C minimum night-time temperature in September in Cardiff10
    10°C min night temperature
  • 82 mm monthly rainfall in September in Cardiff82
    82 mm of monthly rainfall

On average 82 mm (3.2 inches) of rain normally falls in Cardiff during September with rain falling on 14 days of the month.

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Cardiff weather in October

The average maximum daytime temperature in Cardiff in October is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 3 hours of sunshine a day in Cardiff during October.

  • 14°C maximum daytime temperature in October in Cardiff14
    14°C max day temperature
  • 3 hours of sunshine per day in October in Cardiff3
    3 hours of sunshine per day
  • 17 days with some rainfall in October in Cardiff17
    17 days with some rainfall
  • 8°C minimum night-time temperature in October in Cardiff8
    8°C min night temperature
  • 99 mm monthly rainfall in October in Cardiff99
    99 mm of monthly rainfall

On average 99 mm (3.9 inches) of rain normally falls in Cardiff during October with rain falling on 17 days of the month.

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Cardiff weather in November

The average maximum daytime temperature in Cardiff in November is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 2 hours of sunshine a day in Cardiff during November.

  • 10°C maximum daytime temperature in November in Cardiff10
    10°C max day temperature
  • 2 hours of sunshine per day in November in Cardiff2
    2 hours of sunshine per day
  • 18 days with some rainfall in November in Cardiff18
    18 days with some rainfall
  • 5°C minimum night-time temperature in November in Cardiff5
    5°C min night temperature
  • 101 mm monthly rainfall in November in Cardiff101
    101 mm of monthly rainfall

On average 101 mm (4 inches) of rain normally falls in Cardiff during November with rain falling on 18 days of the month.

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Cardiff weather in December

The average maximum daytime temperature in Cardiff in December is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Cardiff during December.

  • 8°C maximum daytime temperature in December in Cardiff8
    8°C max day temperature
  • 2 hours of sunshine per day in December in Cardiff2
    2 hours of sunshine per day
  • 19 days with some rainfall in December in Cardiff19
    19 days with some rainfall
  • 3°C minimum night-time temperature in December in Cardiff3
    3°C min night temperature
  • 110 mm monthly rainfall in December in Cardiff110
    110 mm of monthly rainfall

On average 110 mm (4.3 inches) of rain normally falls in Cardiff during December with rain falling on 19 days of the month.

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