Merton weather

The Merton weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for Merton, Greater London, England.

Merton weather averages

Check the Merton 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 Merton, Greater London, England.

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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Merton weather by month

Check the weather for Merton, Greater London, England 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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Merton weather in January

The average maximum daytime temperature in Merton in January 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 Merton during January.

  • 7°C maximum daytime temperature in January in Merton7
    7°C max day temperature
  • 2 hours of sunshine per day in January in Merton2
    2 hours of sunshine per day
  • 16 days with some rainfall in January in Merton16
    16 days with some rainfall
  • 1°C minimum night-time temperature in January in Merton1
    1°C min night temperature
  • 80 mm monthly rainfall in January in Merton80
    80 mm of monthly rainfall

On average 80 mm (3.1 inches) of rain normally falls in Merton during January with rain falling on 16 days of the month.

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Merton weather in February

The average maximum daytime temperature in Merton 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 Merton during February.

  • 7°C maximum daytime temperature in February in Merton7
    7°C max day temperature
  • 2 hours of sunshine per day in February in Merton2
    2 hours of sunshine per day
  • 13 days with some rainfall in February in Merton13
    13 days with some rainfall
  • 1°C minimum night-time temperature in February in Merton1
    1°C min night temperature
  • 50 mm monthly rainfall in February in Merton50
    50 mm of monthly rainfall

On average 50 mm (2 inches) of rain normally falls in Merton during February with rain falling on 13 days of the month.

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Merton weather in March

The average maximum daytime temperature in Merton in March is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 4 hours of sunshine a day in Merton during March.

  • 10°C maximum daytime temperature in March in Merton10
    10°C max day temperature
  • 4 hours of sunshine per day in March in Merton4
    4 hours of sunshine per day
  • 15 days with some rainfall in March in Merton15
    15 days with some rainfall
  • 2°C minimum night-time temperature in March in Merton2
    2°C min night temperature
  • 58 mm monthly rainfall in March in Merton58
    58 mm of monthly rainfall

On average 58 mm (2.3 inches) of rain normally falls in Merton during March with rain falling on 15 days of the month.

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Merton weather in April

The average maximum daytime temperature in Merton 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 Merton during April.

  • 12°C maximum daytime temperature in April in Merton12
    12°C max day temperature
  • 5 hours of sunshine per day in April in Merton5
    5 hours of sunshine per day
  • 13 days with some rainfall in April in Merton13
    13 days with some rainfall
  • 4°C minimum night-time temperature in April in Merton4
    4°C min night temperature
  • 53 mm monthly rainfall in April in Merton53
    53 mm of monthly rainfall

On average 53 mm (2.1 inches) of rain normally falls in Merton during April with rain falling on 13 days of the month.

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Merton weather in May

The average maximum daytime temperature in Merton in May is a comfortable 16°C (61°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 Merton during May.

  • 16°C maximum daytime temperature in May in Merton16
    16°C max day temperature
  • 6 hours of sunshine per day in May in Merton6
    6 hours of sunshine per day
  • 12 days with some rainfall in May in Merton12
    12 days with some rainfall
  • 6°C minimum night-time temperature in May in Merton6
    6°C min night temperature
  • 57 mm monthly rainfall in May in Merton57
    57 mm of monthly rainfall

On average 57 mm (2.2 inches) of rain normally falls in Merton during May with rain falling on 12 days of the month.

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Merton weather in June

The average maximum daytime temperature in Merton in June is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 7 hours of sunshine a day in Merton during June.

  • 19°C maximum daytime temperature in June in Merton19
    19°C max day temperature
  • 7 hours of sunshine per day in June in Merton7
    7 hours of sunshine per day
  • 11 days with some rainfall in June in Merton11
    11 days with some rainfall
  • 9°C minimum night-time temperature in June in Merton9
    9°C min night temperature
  • 60 mm monthly rainfall in June in Merton60
    60 mm of monthly rainfall

On average 60 mm (2.4 inches) of rain normally falls in Merton during June with rain falling on 11 days of the month.

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Merton weather in July

The average maximum daytime temperature in Merton in July is a warm 22°C (72°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 Merton during July.

  • 22°C maximum daytime temperature in July in Merton22
    22°C max day temperature
  • 6 hours of sunshine per day in July in Merton6
    6 hours of sunshine per day
  • 10 days with some rainfall in July in Merton10
    10 days with some rainfall
  • 12°C minimum night-time temperature in July in Merton12
    12°C min night temperature
  • 41 mm monthly rainfall in July in Merton41
    41 mm of monthly rainfall

On average 41 mm (1.6 inches) of rain normally falls in Merton during July with rain falling on 10 days of the month.

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Merton weather in August

The average maximum daytime temperature in Merton in August is a warm 22°C (72°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 Merton during August.

  • 22°C maximum daytime temperature in August in Merton22
    22°C max day temperature
  • 6 hours of sunshine per day in August in Merton6
    6 hours of sunshine per day
  • 11 days with some rainfall in August in Merton11
    11 days with some rainfall
  • 11°C minimum night-time temperature in August in Merton11
    11°C min night temperature
  • 53 mm monthly rainfall in August in Merton53
    53 mm of monthly rainfall

On average 53 mm (2.1 inches) of rain normally falls in Merton during August with rain falling on 11 days of the month.

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Merton weather in September

The average maximum daytime temperature in Merton in September 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 5 hours of sunshine a day in Merton during September.

  • 18°C maximum daytime temperature in September in Merton18
    18°C max day temperature
  • 5 hours of sunshine per day in September in Merton5
    5 hours of sunshine per day
  • 12 days with some rainfall in September in Merton12
    12 days with some rainfall
  • 9°C minimum night-time temperature in September in Merton9
    9°C min night temperature
  • 72 mm monthly rainfall in September in Merton72
    72 mm of monthly rainfall

On average 72 mm (2.8 inches) of rain normally falls in Merton during September with rain falling on 12 days of the month.

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Merton weather in October

The average maximum daytime temperature in Merton in October is a comfortable 14°C (57°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 Merton during October.

  • 14°C maximum daytime temperature in October in Merton14
    14°C max day temperature
  • 3 hours of sunshine per day in October in Merton3
    3 hours of sunshine per day
  • 14 days with some rainfall in October in Merton14
    14 days with some rainfall
  • 7°C minimum night-time temperature in October in Merton7
    7°C min night temperature
  • 79 mm monthly rainfall in October in Merton79
    79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Merton during October with rain falling on 14 days of the month.

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Merton weather in November

The average maximum daytime temperature in Merton in November 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 2 hours of sunshine a day in Merton during November.

  • 10°C maximum daytime temperature in November in Merton10
    10°C max day temperature
  • 2 hours of sunshine per day in November in Merton2
    2 hours of sunshine per day
  • 15 days with some rainfall in November in Merton15
    15 days with some rainfall
  • 3°C minimum night-time temperature in November in Merton3
    3°C min night temperature
  • 74 mm monthly rainfall in November in Merton74
    74 mm of monthly rainfall

On average 74 mm (2.9 inches) of rain normally falls in Merton during November with rain falling on 15 days of the month.

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Merton weather in December

The average maximum daytime temperature in Merton in December 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 Merton during December.

  • 8°C maximum daytime temperature in December in Merton8
    8°C max day temperature
  • 2 hours of sunshine per day in December in Merton2
    2 hours of sunshine per day
  • 15 days with some rainfall in December in Merton15
    15 days with some rainfall
  • 2°C minimum night-time temperature in December in Merton2
    2°C min night temperature
  • 79 mm monthly rainfall in December in Merton79
    79 mm of monthly rainfall

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

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