Merthyr Dyfan weather

The Merthyr Dyfan weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for Merthyr Dyfan, Vale of Glamorgan, Wales.

Merthyr Dyfan weather averages

Check the Merthyr Dyfan 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 Merthyr Dyfan, Vale of Glamorgan, 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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Merthyr Dyfan weather by month

Check the weather for Merthyr Dyfan, Vale of Glamorgan, 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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Merthyr Dyfan weather in January

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during January.

  • 8°C maximum daytime temperature in January in Merthyr Dyfan8
    8°C max day temperature
  • 2 hours of sunshine per day in January in Merthyr Dyfan2
    2 hours of sunshine per day
  • 19 days with some rainfall in January in Merthyr Dyfan19
    19 days with some rainfall
  • 2°C minimum night-time temperature in January in Merthyr Dyfan2
    2°C min night temperature
  • 105 mm monthly rainfall in January in Merthyr Dyfan105
    105 mm of monthly rainfall

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

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Merthyr Dyfan weather in February

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during February.

  • 8°C maximum daytime temperature in February in Merthyr Dyfan8
    8°C max day temperature
  • 3 hours of sunshine per day in February in Merthyr Dyfan3
    3 hours of sunshine per day
  • 15 days with some rainfall in February in Merthyr Dyfan15
    15 days with some rainfall
  • 2°C minimum night-time temperature in February in Merthyr Dyfan2
    2°C min night temperature
  • 79 mm monthly rainfall in February in Merthyr Dyfan79
    79 mm of monthly rainfall

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

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Merthyr Dyfan weather in March

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during March.

  • 10°C maximum daytime temperature in March in Merthyr Dyfan10
    10°C max day temperature
  • 4 hours of sunshine per day in March in Merthyr Dyfan4
    4 hours of sunshine per day
  • 17 days with some rainfall in March in Merthyr Dyfan17
    17 days with some rainfall
  • 3°C minimum night-time temperature in March in Merthyr Dyfan3
    3°C min night temperature
  • 76 mm monthly rainfall in March in Merthyr Dyfan76
    76 mm of monthly rainfall

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

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Merthyr Dyfan weather in April

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during April.

  • 12°C maximum daytime temperature in April in Merthyr Dyfan12
    12°C max day temperature
  • 5 hours of sunshine per day in April in Merthyr Dyfan5
    5 hours of sunshine per day
  • 14 days with some rainfall in April in Merthyr Dyfan14
    14 days with some rainfall
  • 4°C minimum night-time temperature in April in Merthyr Dyfan4
    4°C min night temperature
  • 60 mm monthly rainfall in April in Merthyr Dyfan60
    60 mm of monthly rainfall

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

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Merthyr Dyfan weather in May

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during May.

  • 16°C maximum daytime temperature in May in Merthyr Dyfan16
    16°C max day temperature
  • 6 hours of sunshine per day in May in Merthyr Dyfan6
    6 hours of sunshine per day
  • 13 days with some rainfall in May in Merthyr Dyfan13
    13 days with some rainfall
  • 7°C minimum night-time temperature in May in Merthyr Dyfan7
    7°C min night temperature
  • 61 mm monthly rainfall in May in Merthyr Dyfan61
    61 mm of monthly rainfall

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

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Merthyr Dyfan weather in June

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during June.

  • 18°C maximum daytime temperature in June in Merthyr Dyfan18
    18°C max day temperature
  • 7 hours of sunshine per day in June in Merthyr Dyfan7
    7 hours of sunshine per day
  • 13 days with some rainfall in June in Merthyr Dyfan13
    13 days with some rainfall
  • 10°C minimum night-time temperature in June in Merthyr Dyfan10
    10°C min night temperature
  • 61 mm monthly rainfall in June in Merthyr Dyfan61
    61 mm of monthly rainfall

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

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Merthyr Dyfan weather in July

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during July.

  • 21°C maximum daytime temperature in July in Merthyr Dyfan21
    21°C max day temperature
  • 6 hours of sunshine per day in July in Merthyr Dyfan6
    6 hours of sunshine per day
  • 12 days with some rainfall in July in Merthyr Dyfan12
    12 days with some rainfall
  • 12°C minimum night-time temperature in July in Merthyr Dyfan12
    12°C min night temperature
  • 54 mm monthly rainfall in July in Merthyr Dyfan54
    54 mm of monthly rainfall

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

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Merthyr Dyfan weather in August

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during August.

  • 21°C maximum daytime temperature in August in Merthyr Dyfan21
    21°C max day temperature
  • 6 hours of sunshine per day in August in Merthyr Dyfan6
    6 hours of sunshine per day
  • 14 days with some rainfall in August in Merthyr Dyfan14
    14 days with some rainfall
  • 12°C minimum night-time temperature in August in Merthyr Dyfan12
    12°C min night temperature
  • 77 mm monthly rainfall in August in Merthyr Dyfan77
    77 mm of monthly rainfall

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

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Merthyr Dyfan weather in September

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during September.

  • 18°C maximum daytime temperature in September in Merthyr Dyfan18
    18°C max day temperature
  • 5 hours of sunshine per day in September in Merthyr Dyfan5
    5 hours of sunshine per day
  • 14 days with some rainfall in September in Merthyr Dyfan14
    14 days with some rainfall
  • 10°C minimum night-time temperature in September in Merthyr Dyfan10
    10°C min night temperature
  • 82 mm monthly rainfall in September in Merthyr Dyfan82
    82 mm of monthly rainfall

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

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Merthyr Dyfan weather in October

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during October.

  • 14°C maximum daytime temperature in October in Merthyr Dyfan14
    14°C max day temperature
  • 3 hours of sunshine per day in October in Merthyr Dyfan3
    3 hours of sunshine per day
  • 17 days with some rainfall in October in Merthyr Dyfan17
    17 days with some rainfall
  • 8°C minimum night-time temperature in October in Merthyr Dyfan8
    8°C min night temperature
  • 99 mm monthly rainfall in October in Merthyr Dyfan99
    99 mm of monthly rainfall

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

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Merthyr Dyfan weather in November

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during November.

  • 10°C maximum daytime temperature in November in Merthyr Dyfan10
    10°C max day temperature
  • 2 hours of sunshine per day in November in Merthyr Dyfan2
    2 hours of sunshine per day
  • 18 days with some rainfall in November in Merthyr Dyfan18
    18 days with some rainfall
  • 5°C minimum night-time temperature in November in Merthyr Dyfan5
    5°C min night temperature
  • 101 mm monthly rainfall in November in Merthyr Dyfan101
    101 mm of monthly rainfall

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

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Merthyr Dyfan weather in December

The average maximum daytime temperature in Merthyr Dyfan 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 Merthyr Dyfan during December.

  • 8°C maximum daytime temperature in December in Merthyr Dyfan8
    8°C max day temperature
  • 2 hours of sunshine per day in December in Merthyr Dyfan2
    2 hours of sunshine per day
  • 19 days with some rainfall in December in Merthyr Dyfan19
    19 days with some rainfall
  • 3°C minimum night-time temperature in December in Merthyr Dyfan3
    3°C min night temperature
  • 110 mm monthly rainfall in December in Merthyr Dyfan110
    110 mm of monthly rainfall

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

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