Cornwall weather

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

Cornwall weather averages

Check the Cornwall 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 Cornwall, England. The Cornwall weather averages shown below are for Saint Ives.

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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Cornwall weather by month

Check the weather for Cornwall, England for a particular month by selecting from the list below. The Cornwall monthly weather averages are for Saint Ives. This gives the best indication of what to expect from the weather months in advance.

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Cornwall weather in January

The average maximum daytime temperature in Cornwall (Saint Ives) in January 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 Cornwall (Saint Ives) during January.

  • 9°C maximum daytime temperature in January in Cornwall (Saint Ives)9
    9°C max day temperature
  • 2 hours of sunshine per day in January in Cornwall2
    2 hours of sunshine per day
  • 21 days with some rainfall in January in Cornwall (Saint Ives)21
    21 days with some rainfall
  • 4°C minimum night-time temperature in January in Cornwall (Saint Ives)4
    4°C min night temperature
  • 138 mm monthly rainfall in January in Cornwall (Saint Ives)138
    138 mm of monthly rainfall

On average 138 mm (5.4 inches) of rain normally falls in Cornwall (Saint Ives) during January with rain falling on 21 days of the month.

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Cornwall weather in February

The average maximum daytime temperature in Cornwall (Saint Ives) in February 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 3 hours of sunshine a day in Cornwall (Saint Ives) during February.

  • 9°C maximum daytime temperature in February in Cornwall (Saint Ives)9
    9°C max day temperature
  • 3 hours of sunshine per day in February in Cornwall3
    3 hours of sunshine per day
  • 17 days with some rainfall in February in Cornwall (Saint Ives)17
    17 days with some rainfall
  • 4°C minimum night-time temperature in February in Cornwall (Saint Ives)4
    4°C min night temperature
  • 106 mm monthly rainfall in February in Cornwall (Saint Ives)106
    106 mm of monthly rainfall

On average 106 mm (4.2 inches) of rain normally falls in Cornwall (Saint Ives) during February with rain falling on 17 days of the month.

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Cornwall weather in March

The average maximum daytime temperature in Cornwall (Saint Ives) in March 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 4 hours of sunshine a day in Cornwall (Saint Ives) during March.

  • 10°C maximum daytime temperature in March in Cornwall (Saint Ives)10
    10°C max day temperature
  • 4 hours of sunshine per day in March in Cornwall4
    4 hours of sunshine per day
  • 17 days with some rainfall in March in Cornwall (Saint Ives)17
    17 days with some rainfall
  • 5°C minimum night-time temperature in March in Cornwall (Saint Ives)5
    5°C min night temperature
  • 93 mm monthly rainfall in March in Cornwall (Saint Ives)93
    93 mm of monthly rainfall

On average 93 mm (3.7 inches) of rain normally falls in Cornwall (Saint Ives) during March with rain falling on 17 days of the month.

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Cornwall weather in April

The average maximum daytime temperature in Cornwall (Saint Ives) in April is a cool 12°C (54°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 Cornwall (Saint Ives) during April.

  • 12°C maximum daytime temperature in April in Cornwall (Saint Ives)12
    12°C max day temperature
  • 6 hours of sunshine per day in April in Cornwall6
    6 hours of sunshine per day
  • 14 days with some rainfall in April in Cornwall (Saint Ives)14
    14 days with some rainfall
  • 6°C minimum night-time temperature in April in Cornwall (Saint Ives)6
    6°C min night temperature
  • 68 mm monthly rainfall in April in Cornwall (Saint Ives)68
    68 mm of monthly rainfall

On average 68 mm (2.7 inches) of rain normally falls in Cornwall (Saint Ives) during April with rain falling on 14 days of the month.

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Cornwall weather in May

The average maximum daytime temperature in Cornwall (Saint Ives) in May is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 7 hours of sunshine a day in Cornwall (Saint Ives) during May.

  • 15°C maximum daytime temperature in May in Cornwall (Saint Ives)15
    15°C max day temperature
  • 7 hours of sunshine per day in May in Cornwall7
    7 hours of sunshine per day
  • 13 days with some rainfall in May in Cornwall (Saint Ives)13
    13 days with some rainfall
  • 8°C minimum night-time temperature in May in Cornwall (Saint Ives)8
    8°C min night temperature
  • 64 mm monthly rainfall in May in Cornwall (Saint Ives)64
    64 mm of monthly rainfall

On average 64 mm (2.5 inches) of rain normally falls in Cornwall (Saint Ives) during May with rain falling on 13 days of the month.

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Cornwall weather in June

The average maximum daytime temperature in Cornwall (Saint Ives) in June is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 7 hours of sunshine a day in Cornwall (Saint Ives) during June.

  • 17°C maximum daytime temperature in June in Cornwall (Saint Ives)17
    17°C max day temperature
  • 7 hours of sunshine per day in June in Cornwall7
    7 hours of sunshine per day
  • 12 days with some rainfall in June in Cornwall (Saint Ives)12
    12 days with some rainfall
  • 11°C minimum night-time temperature in June in Cornwall (Saint Ives)11
    11°C min night temperature
  • 67 mm monthly rainfall in June in Cornwall (Saint Ives)67
    67 mm of monthly rainfall

On average 67 mm (2.6 inches) of rain normally falls in Cornwall (Saint Ives) during June with rain falling on 12 days of the month.

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Cornwall weather in July

The average maximum daytime temperature in Cornwall (Saint Ives) in July is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 13°C (55°F). You can expect on average 7 hours of sunshine a day in Cornwall (Saint Ives) during July.

  • 19°C maximum daytime temperature in July in Cornwall (Saint Ives)19
    19°C max day temperature
  • 7 hours of sunshine per day in July in Cornwall7
    7 hours of sunshine per day
  • 12 days with some rainfall in July in Cornwall (Saint Ives)12
    12 days with some rainfall
  • 13°C minimum night-time temperature in July in Cornwall (Saint Ives)13
    13°C min night temperature
  • 60 mm monthly rainfall in July in Cornwall (Saint Ives)60
    60 mm of monthly rainfall

On average 60 mm (2.4 inches) of rain normally falls in Cornwall (Saint Ives) during July with rain falling on 12 days of the month.

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Cornwall weather in August

The average maximum daytime temperature in Cornwall (Saint Ives) in August is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 13°C (55°F). You can expect on average 6 hours of sunshine a day in Cornwall (Saint Ives) during August.

  • 19°C maximum daytime temperature in August in Cornwall (Saint Ives)19
    19°C max day temperature
  • 6 hours of sunshine per day in August in Cornwall6
    6 hours of sunshine per day
  • 14 days with some rainfall in August in Cornwall (Saint Ives)14
    14 days with some rainfall
  • 13°C minimum night-time temperature in August in Cornwall (Saint Ives)13
    13°C min night temperature
  • 79 mm monthly rainfall in August in Cornwall (Saint Ives)79
    79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Cornwall (Saint Ives) during August with rain falling on 14 days of the month.

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Cornwall weather in September

The average maximum daytime temperature in Cornwall (Saint Ives) in September is a comfortable 17°C (63°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 Cornwall (Saint Ives) during September.

  • 17°C maximum daytime temperature in September in Cornwall (Saint Ives)17
    17°C max day temperature
  • 5 hours of sunshine per day in September in Cornwall5
    5 hours of sunshine per day
  • 15 days with some rainfall in September in Cornwall (Saint Ives)15
    15 days with some rainfall
  • 11°C minimum night-time temperature in September in Cornwall (Saint Ives)11
    11°C min night temperature
  • 88 mm monthly rainfall in September in Cornwall (Saint Ives)88
    88 mm of monthly rainfall

On average 88 mm (3.5 inches) of rain normally falls in Cornwall (Saint Ives) during September with rain falling on 15 days of the month.

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Cornwall weather in October

The average maximum daytime temperature in Cornwall (Saint Ives) in October is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 3 hours of sunshine a day in Cornwall (Saint Ives) during October.

  • 14°C maximum daytime temperature in October in Cornwall (Saint Ives)14
    14°C max day temperature
  • 3 hours of sunshine per day in October in Cornwall3
    3 hours of sunshine per day
  • 18 days with some rainfall in October in Cornwall (Saint Ives)18
    18 days with some rainfall
  • 9°C minimum night-time temperature in October in Cornwall (Saint Ives)9
    9°C min night temperature
  • 119 mm monthly rainfall in October in Cornwall (Saint Ives)119
    119 mm of monthly rainfall

On average 119 mm (4.7 inches) of rain normally falls in Cornwall (Saint Ives) during October with rain falling on 18 days of the month.

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Cornwall weather in November

The average maximum daytime temperature in Cornwall (Saint Ives) in November is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 2 hours of sunshine a day in Cornwall (Saint Ives) during November.

  • 11°C maximum daytime temperature in November in Cornwall (Saint Ives)11
    11°C max day temperature
  • 2 hours of sunshine per day in November in Cornwall2
    2 hours of sunshine per day
  • 20 days with some rainfall in November in Cornwall (Saint Ives)20
    20 days with some rainfall
  • 7°C minimum night-time temperature in November in Cornwall (Saint Ives)7
    7°C min night temperature
  • 136 mm monthly rainfall in November in Cornwall (Saint Ives)136
    136 mm of monthly rainfall

On average 136 mm (5.4 inches) of rain normally falls in Cornwall (Saint Ives) during November with rain falling on 20 days of the month.

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Cornwall weather in December

The average maximum daytime temperature in Cornwall (Saint Ives) in December is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 2 hours of sunshine a day in Cornwall (Saint Ives) during December.

  • 10°C maximum daytime temperature in December in Cornwall (Saint Ives)10
    10°C max day temperature
  • 2 hours of sunshine per day in December in Cornwall2
    2 hours of sunshine per day
  • 21 days with some rainfall in December in Cornwall (Saint Ives)21
    21 days with some rainfall
  • 6°C minimum night-time temperature in December in Cornwall (Saint Ives)6
    6°C min night temperature
  • 143 mm monthly rainfall in December in Cornwall (Saint Ives)143
    143 mm of monthly rainfall

On average 143 mm (5.6 inches) of rain normally falls in Cornwall (Saint Ives) during December with rain falling on 21 days of the month.

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Cornwall destinations

Browse the destinations below to find a holiday weather guide to help you plan your next holiday to Cornwall. If you can't find the destination you are looking for, try the destination search.

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