Castle Cary weather

The Castle Cary weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Castle Cary, Somerset, England in 2026/2027.

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Castle Cary weather averages

Check the Castle Cary 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 Castle Cary, Somerset, England.

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Castle Cary weather by month

Check the weather for Castle Cary, Somerset, 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.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

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Castle Cary weather in January

The average maximum daytime temperature in Castle Cary in January 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 2 hours of sunshine a day in Castle Cary during January.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 18
  18 days with some rainfall
• 2
  2°C min night temperature
• 95
  95 mm of monthly rainfall

On average 95 mm (3.7 inches) of rain normally falls in Castle Cary during January with rain falling on 18 days of the month.

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Castle Cary weather in February

The average maximum daytime temperature in Castle Cary 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 Castle Cary during February.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 14
  14 days with some rainfall
• 2
  2°C min night temperature
• 73
  73 mm of monthly rainfall

On average 73 mm (2.9 inches) of rain normally falls in Castle Cary during February with rain falling on 14 days of the month.

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Castle Cary weather in March

The average maximum daytime temperature in Castle Cary 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 Castle Cary during March.

• 10
  10°C max day temperature
• 4
  4 hours of sunshine per day
• 17
  17 days with some rainfall
• 3
  3°C min night temperature
• 74
  74 mm of monthly rainfall

On average 74 mm (2.9 inches) of rain normally falls in Castle Cary during March with rain falling on 17 days of the month.

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Castle Cary weather in April

The average maximum daytime temperature in Castle Cary 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 Castle Cary during April.

• 12
  12°C max day temperature
• 5
  5 hours of sunshine per day
• 14
  14 days with some rainfall
• 4
  4°C min night temperature
• 61
  61 mm of monthly rainfall

On average 61 mm (2.4 inches) of rain normally falls in Castle Cary during April with rain falling on 14 days of the month.

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Castle Cary weather in May

The average maximum daytime temperature in Castle Cary 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 Castle Cary during May.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 13
  13 days with some rainfall
• 7
  7°C min night temperature
• 63
  63 mm of monthly rainfall

On average 63 mm (2.5 inches) of rain normally falls in Castle Cary during May with rain falling on 13 days of the month.

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Castle Cary weather in June

The average maximum daytime temperature in Castle Cary 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 Castle Cary during June.

• 18
  18°C max day temperature
• 7
  7 hours of sunshine per day
• 12
  12 days with some rainfall
• 10
  10°C min night temperature
• 64
  64 mm of monthly rainfall

On average 64 mm (2.5 inches) of rain normally falls in Castle Cary during June with rain falling on 12 days of the month.

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Castle Cary weather in July

The average maximum daytime temperature in Castle Cary 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 Castle Cary during July.

• 21
  21°C max day temperature
• 6
  6 hours of sunshine per day
• 11
  11 days with some rainfall
• 12
  12°C min night temperature
• 60
  60 mm of monthly rainfall

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

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Castle Cary weather in August

The average maximum daytime temperature in Castle Cary 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 Castle Cary during August.

• 21
  21°C max day temperature
• 6
  6 hours of sunshine per day
• 13
  13 days with some rainfall
• 12
  12°C min night temperature
• 79
  79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Castle Cary during August with rain falling on 13 days of the month.

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Castle Cary weather in September

The average maximum daytime temperature in Castle Cary 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 Castle Cary during September.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 14
  14 days with some rainfall
• 10
  10°C min night temperature
• 86
  86 mm of monthly rainfall

On average 86 mm (3.4 inches) of rain normally falls in Castle Cary during September with rain falling on 14 days of the month.

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Castle Cary weather in October

The average maximum daytime temperature in Castle Cary 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 Castle Cary during October.

• 14
  14°C max day temperature
• 3
  3 hours of sunshine per day
• 16
  16 days with some rainfall
• 7
  7°C min night temperature
• 92
  92 mm of monthly rainfall

On average 92 mm (3.6 inches) of rain normally falls in Castle Cary during October with rain falling on 16 days of the month.

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Castle Cary weather in November

The average maximum daytime temperature in Castle Cary in November is a cool 10°C (50°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 Castle Cary during November.

• 10
  10°C max day temperature
• 2
  2 hours of sunshine per day
• 17
  17 days with some rainfall
• 4
  4°C min night temperature
• 96
  96 mm of monthly rainfall

On average 96 mm (3.8 inches) of rain normally falls in Castle Cary during November with rain falling on 17 days of the month.

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Castle Cary weather in December

The average maximum daytime temperature in Castle Cary 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 Castle Cary during December.

• 8
  8°C max day temperature
• 2
  2 hours of sunshine per day
• 18
  18 days with some rainfall
• 3
  3°C min night temperature
• 104
  104 mm of monthly rainfall

On average 104 mm (4.1 inches) of rain normally falls in Castle Cary during December with rain falling on 18 days of the month.

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