Sully weather

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

Sully weather averages

Check the Sully 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 Sully, 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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Sully weather by month

Check the weather for Sully, 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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Sully weather in January

The average maximum daytime temperature in Sully 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 Sully during January.

  • 8°C maximum daytime temperature in January in Sully8
    8°C max day temperature
  • 2 hours of sunshine per day in January in Sully2
    2 hours of sunshine per day
  • 19 days with some rainfall in January in Sully19
    19 days with some rainfall
  • 2°C minimum night-time temperature in January in Sully2
    2°C min night temperature
  • 105 mm monthly rainfall in January in Sully105
    105 mm of monthly rainfall

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

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Sully weather in February

The average maximum daytime temperature in Sully 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 Sully during February.

  • 8°C maximum daytime temperature in February in Sully8
    8°C max day temperature
  • 3 hours of sunshine per day in February in Sully3
    3 hours of sunshine per day
  • 15 days with some rainfall in February in Sully15
    15 days with some rainfall
  • 2°C minimum night-time temperature in February in Sully2
    2°C min night temperature
  • 79 mm monthly rainfall in February in Sully79
    79 mm of monthly rainfall

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

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Sully weather in March

The average maximum daytime temperature in Sully 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 Sully during March.

  • 10°C maximum daytime temperature in March in Sully10
    10°C max day temperature
  • 4 hours of sunshine per day in March in Sully4
    4 hours of sunshine per day
  • 17 days with some rainfall in March in Sully17
    17 days with some rainfall
  • 3°C minimum night-time temperature in March in Sully3
    3°C min night temperature
  • 76 mm monthly rainfall in March in Sully76
    76 mm of monthly rainfall

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

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Sully weather in April

The average maximum daytime temperature in Sully 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 Sully during April.

  • 12°C maximum daytime temperature in April in Sully12
    12°C max day temperature
  • 5 hours of sunshine per day in April in Sully5
    5 hours of sunshine per day
  • 14 days with some rainfall in April in Sully14
    14 days with some rainfall
  • 4°C minimum night-time temperature in April in Sully4
    4°C min night temperature
  • 60 mm monthly rainfall in April in Sully60
    60 mm of monthly rainfall

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

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Sully weather in May

The average maximum daytime temperature in Sully 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 Sully during May.

  • 16°C maximum daytime temperature in May in Sully16
    16°C max day temperature
  • 6 hours of sunshine per day in May in Sully6
    6 hours of sunshine per day
  • 13 days with some rainfall in May in Sully13
    13 days with some rainfall
  • 7°C minimum night-time temperature in May in Sully7
    7°C min night temperature
  • 61 mm monthly rainfall in May in Sully61
    61 mm of monthly rainfall

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

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Sully weather in June

The average maximum daytime temperature in Sully 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 Sully during June.

  • 18°C maximum daytime temperature in June in Sully18
    18°C max day temperature
  • 7 hours of sunshine per day in June in Sully7
    7 hours of sunshine per day
  • 13 days with some rainfall in June in Sully13
    13 days with some rainfall
  • 10°C minimum night-time temperature in June in Sully10
    10°C min night temperature
  • 61 mm monthly rainfall in June in Sully61
    61 mm of monthly rainfall

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

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Sully weather in July

The average maximum daytime temperature in Sully 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 Sully during July.

  • 21°C maximum daytime temperature in July in Sully21
    21°C max day temperature
  • 6 hours of sunshine per day in July in Sully6
    6 hours of sunshine per day
  • 12 days with some rainfall in July in Sully12
    12 days with some rainfall
  • 12°C minimum night-time temperature in July in Sully12
    12°C min night temperature
  • 54 mm monthly rainfall in July in Sully54
    54 mm of monthly rainfall

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

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Sully weather in August

The average maximum daytime temperature in Sully 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 Sully during August.

  • 21°C maximum daytime temperature in August in Sully21
    21°C max day temperature
  • 6 hours of sunshine per day in August in Sully6
    6 hours of sunshine per day
  • 14 days with some rainfall in August in Sully14
    14 days with some rainfall
  • 12°C minimum night-time temperature in August in Sully12
    12°C min night temperature
  • 77 mm monthly rainfall in August in Sully77
    77 mm of monthly rainfall

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

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Sully weather in September

The average maximum daytime temperature in Sully 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 Sully during September.

  • 18°C maximum daytime temperature in September in Sully18
    18°C max day temperature
  • 5 hours of sunshine per day in September in Sully5
    5 hours of sunshine per day
  • 14 days with some rainfall in September in Sully14
    14 days with some rainfall
  • 10°C minimum night-time temperature in September in Sully10
    10°C min night temperature
  • 82 mm monthly rainfall in September in Sully82
    82 mm of monthly rainfall

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

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Sully weather in October

The average maximum daytime temperature in Sully 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 Sully during October.

  • 14°C maximum daytime temperature in October in Sully14
    14°C max day temperature
  • 3 hours of sunshine per day in October in Sully3
    3 hours of sunshine per day
  • 17 days with some rainfall in October in Sully17
    17 days with some rainfall
  • 8°C minimum night-time temperature in October in Sully8
    8°C min night temperature
  • 99 mm monthly rainfall in October in Sully99
    99 mm of monthly rainfall

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

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Sully weather in November

The average maximum daytime temperature in Sully 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 Sully during November.

  • 10°C maximum daytime temperature in November in Sully10
    10°C max day temperature
  • 2 hours of sunshine per day in November in Sully2
    2 hours of sunshine per day
  • 18 days with some rainfall in November in Sully18
    18 days with some rainfall
  • 5°C minimum night-time temperature in November in Sully5
    5°C min night temperature
  • 101 mm monthly rainfall in November in Sully101
    101 mm of monthly rainfall

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

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Sully weather in December

The average maximum daytime temperature in Sully 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 Sully during December.

  • 8°C maximum daytime temperature in December in Sully8
    8°C max day temperature
  • 2 hours of sunshine per day in December in Sully2
    2 hours of sunshine per day
  • 19 days with some rainfall in December in Sully19
    19 days with some rainfall
  • 3°C minimum night-time temperature in December in Sully3
    3°C min night temperature
  • 110 mm monthly rainfall in December in Sully110
    110 mm of monthly rainfall

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

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