Merthyr Tydfil weather

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

Merthyr Tydfil weather averages

Check the Merthyr Tydfil 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 Tydfil, Merthyr Tydfil 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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Merthyr Tydfil weather by month

Check the weather for Merthyr Tydfil, Merthyr Tydfil 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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Merthyr Tydfil weather in January

The average maximum daytime temperature in Merthyr Tydfil in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 1 hours of sunshine a day in Merthyr Tydfil during January.

  • 6°C maximum daytime temperature in January in Merthyr Tydfil6
    6°C max day temperature
  • 1 hours of sunshine per day in January in Merthyr Tydfil1
    1 hour of sunshine per day
  • 20 days with some rainfall in January in Merthyr Tydfil20
    20 days with some rainfall
  • 1°C minimum night-time temperature in January in Merthyr Tydfil1
    1°C min night temperature
  • 165 mm monthly rainfall in January in Merthyr Tydfil165
    165 mm of monthly rainfall

On average 165 mm (6.5 inches) of rain normally falls in Merthyr Tydfil during January with rain falling on 20 days of the month.

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Merthyr Tydfil weather in February

The average maximum daytime temperature in Merthyr Tydfil in February is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Merthyr Tydfil during February.

  • 7°C maximum daytime temperature in February in Merthyr Tydfil7
    7°C max day temperature
  • 2 hours of sunshine per day in February in Merthyr Tydfil2
    2 hours of sunshine per day
  • 16 days with some rainfall in February in Merthyr Tydfil16
    16 days with some rainfall
  • 1°C minimum night-time temperature in February in Merthyr Tydfil1
    1°C min night temperature
  • 120 mm monthly rainfall in February in Merthyr Tydfil120
    120 mm of monthly rainfall

On average 120 mm (4.7 inches) of rain normally falls in Merthyr Tydfil during February with rain falling on 16 days of the month.

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Merthyr Tydfil weather in March

The average maximum daytime temperature in Merthyr Tydfil in March is a cool 9°C (48°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 Tydfil during March.

  • 9°C maximum daytime temperature in March in Merthyr Tydfil9
    9°C max day temperature
  • 3 hours of sunshine per day in March in Merthyr Tydfil3
    3 hours of sunshine per day
  • 18 days with some rainfall in March in Merthyr Tydfil18
    18 days with some rainfall
  • 2°C minimum night-time temperature in March in Merthyr Tydfil2
    2°C min night temperature
  • 114 mm monthly rainfall in March in Merthyr Tydfil114
    114 mm of monthly rainfall

On average 114 mm (4.5 inches) of rain normally falls in Merthyr Tydfil during March with rain falling on 18 days of the month.

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Merthyr Tydfil weather in April

The average maximum daytime temperature in Merthyr Tydfil in April is a cool 11°C (52°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 Tydfil during April.

  • 11°C maximum daytime temperature in April in Merthyr Tydfil11
    11°C max day temperature
  • 5 hours of sunshine per day in April in Merthyr Tydfil5
    5 hours of sunshine per day
  • 15 days with some rainfall in April in Merthyr Tydfil15
    15 days with some rainfall
  • 4°C minimum night-time temperature in April in Merthyr Tydfil4
    4°C min night temperature
  • 86 mm monthly rainfall in April in Merthyr Tydfil86
    86 mm of monthly rainfall

On average 86 mm (3.4 inches) of rain normally falls in Merthyr Tydfil during April with rain falling on 15 days of the month.

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Merthyr Tydfil weather in May

The average maximum daytime temperature in Merthyr Tydfil in May is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Merthyr Tydfil during May.

  • 15°C maximum daytime temperature in May in Merthyr Tydfil15
    15°C max day temperature
  • 6 hours of sunshine per day in May in Merthyr Tydfil6
    6 hours of sunshine per day
  • 14 days with some rainfall in May in Merthyr Tydfil14
    14 days with some rainfall
  • 6°C minimum night-time temperature in May in Merthyr Tydfil6
    6°C min night temperature
  • 80 mm monthly rainfall in May in Merthyr Tydfil80
    80 mm of monthly rainfall

On average 80 mm (3.1 inches) of rain normally falls in Merthyr Tydfil during May with rain falling on 14 days of the month.

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Merthyr Tydfil weather in June

The average maximum daytime temperature in Merthyr Tydfil in June is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 6 hours of sunshine a day in Merthyr Tydfil during June.

  • 18°C maximum daytime temperature in June in Merthyr Tydfil18
    18°C max day temperature
  • 6 hours of sunshine per day in June in Merthyr Tydfil6
    6 hours of sunshine per day
  • 14 days with some rainfall in June in Merthyr Tydfil14
    14 days with some rainfall
  • 9°C minimum night-time temperature in June in Merthyr Tydfil9
    9°C min night temperature
  • 80 mm monthly rainfall in June in Merthyr Tydfil80
    80 mm of monthly rainfall

On average 80 mm (3.1 inches) of rain normally falls in Merthyr Tydfil during June with rain falling on 14 days of the month.

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Merthyr Tydfil weather in July

The average maximum daytime temperature in Merthyr Tydfil in July is a comfortable 20°C (68°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 6 hours of sunshine a day in Merthyr Tydfil during July.

  • 20°C maximum daytime temperature in July in Merthyr Tydfil20
    20°C max day temperature
  • 6 hours of sunshine per day in July in Merthyr Tydfil6
    6 hours of sunshine per day
  • 13 days with some rainfall in July in Merthyr Tydfil13
    13 days with some rainfall
  • 11°C minimum night-time temperature in July in Merthyr Tydfil11
    11°C min night temperature
  • 68 mm monthly rainfall in July in Merthyr Tydfil68
    68 mm of monthly rainfall

On average 68 mm (2.7 inches) of rain normally falls in Merthyr Tydfil during July with rain falling on 13 days of the month.

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Merthyr Tydfil weather in August

The average maximum daytime temperature in Merthyr Tydfil in August is a comfortable 20°C (68°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Merthyr Tydfil during August.

  • 20°C maximum daytime temperature in August in Merthyr Tydfil20
    20°C max day temperature
  • 5 hours of sunshine per day in August in Merthyr Tydfil5
    5 hours of sunshine per day
  • 15 days with some rainfall in August in Merthyr Tydfil15
    15 days with some rainfall
  • 11°C minimum night-time temperature in August in Merthyr Tydfil11
    11°C min night temperature
  • 97 mm monthly rainfall in August in Merthyr Tydfil97
    97 mm of monthly rainfall

On average 97 mm (3.8 inches) of rain normally falls in Merthyr Tydfil during August with rain falling on 15 days of the month.

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Merthyr Tydfil weather in September

The average maximum daytime temperature in Merthyr Tydfil in September is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 4 hours of sunshine a day in Merthyr Tydfil during September.

  • 17°C maximum daytime temperature in September in Merthyr Tydfil17
    17°C max day temperature
  • 4 hours of sunshine per day in September in Merthyr Tydfil4
    4 hours of sunshine per day
  • 15 days with some rainfall in September in Merthyr Tydfil15
    15 days with some rainfall
  • 9°C minimum night-time temperature in September in Merthyr Tydfil9
    9°C min night temperature
  • 112 mm monthly rainfall in September in Merthyr Tydfil112
    112 mm of monthly rainfall

On average 112 mm (4.4 inches) of rain normally falls in Merthyr Tydfil during September with rain falling on 15 days of the month.

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Merthyr Tydfil weather in October

The average maximum daytime temperature in Merthyr Tydfil in October is a cool 13°C (55°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 3 hours of sunshine a day in Merthyr Tydfil during October.

  • 13°C maximum daytime temperature in October in Merthyr Tydfil13
    13°C max day temperature
  • 3 hours of sunshine per day in October in Merthyr Tydfil3
    3 hours of sunshine per day
  • 18 days with some rainfall in October in Merthyr Tydfil18
    18 days with some rainfall
  • 7°C minimum night-time temperature in October in Merthyr Tydfil7
    7°C min night temperature
  • 138 mm monthly rainfall in October in Merthyr Tydfil138
    138 mm of monthly rainfall

On average 138 mm (5.4 inches) of rain normally falls in Merthyr Tydfil during October with rain falling on 18 days of the month.

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Merthyr Tydfil weather in November

The average maximum daytime temperature in Merthyr Tydfil in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 2 hours of sunshine a day in Merthyr Tydfil during November.

  • 9°C maximum daytime temperature in November in Merthyr Tydfil9
    9°C max day temperature
  • 2 hours of sunshine per day in November in Merthyr Tydfil2
    2 hours of sunshine per day
  • 19 days with some rainfall in November in Merthyr Tydfil19
    19 days with some rainfall
  • 4°C minimum night-time temperature in November in Merthyr Tydfil4
    4°C min night temperature
  • 146 mm monthly rainfall in November in Merthyr Tydfil146
    146 mm of monthly rainfall

On average 146 mm (5.7 inches) of rain normally falls in Merthyr Tydfil during November with rain falling on 19 days of the month.

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Merthyr Tydfil weather in December

The average maximum daytime temperature in Merthyr Tydfil in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Merthyr Tydfil during December.

  • 7°C maximum daytime temperature in December in Merthyr Tydfil7
    7°C max day temperature
  • 1 hours of sunshine per day in December in Merthyr Tydfil1
    1 hour of sunshine per day
  • 19 days with some rainfall in December in Merthyr Tydfil19
    19 days with some rainfall
  • 2°C minimum night-time temperature in December in Merthyr Tydfil2
    2°C min night temperature
  • 168 mm monthly rainfall in December in Merthyr Tydfil168
    168 mm of monthly rainfall

On average 168 mm (6.6 inches) of rain normally falls in Merthyr Tydfil during December with rain falling on 19 days of the month.

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