Port Isaac weather

The Port Isaac weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Port Isaac, Cornwall, England in 2019/2020.

Port Isaac weather averages

Check the Port Isaac 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 Port Isaac, Cornwall, 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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Port Isaac weather by month

Check the weather for Port Isaac, Cornwall, 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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Port Isaac weather in January

The average maximum daytime temperature in Port Isaac in January 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 Port Isaac during January.

  • 8°C maximum daytime temperature in January in Port Isaac8
    8°C max day temperature
  • 2 hours of sunshine per day in January in Port Isaac2
    2 hours of sunshine per day
  • 20 days with some rainfall in January in Port Isaac20
    20 days with some rainfall
  • 3°C minimum night-time temperature in January in Port Isaac3
    3°C min night temperature
  • 180 mm monthly rainfall in January in Port Isaac180
    180 mm of monthly rainfall

On average 180 mm (7.1 inches) of rain normally falls in Port Isaac during January with rain falling on 20 days of the month.

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Port Isaac weather in February

The average maximum daytime temperature in Port Isaac in February 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 3 hours of sunshine a day in Port Isaac during February.

  • 8°C maximum daytime temperature in February in Port Isaac8
    8°C max day temperature
  • 3 hours of sunshine per day in February in Port Isaac3
    3 hours of sunshine per day
  • 17 days with some rainfall in February in Port Isaac17
    17 days with some rainfall
  • 3°C minimum night-time temperature in February in Port Isaac3
    3°C min night temperature
  • 133 mm monthly rainfall in February in Port Isaac133
    133 mm of monthly rainfall

On average 133 mm (5.2 inches) of rain normally falls in Port Isaac during February with rain falling on 17 days of the month.

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Port Isaac weather in March

The average maximum daytime temperature in Port Isaac in March 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 4 hours of sunshine a day in Port Isaac during March.

  • 10°C maximum daytime temperature in March in Port Isaac10
    10°C max day temperature
  • 4 hours of sunshine per day in March in Port Isaac4
    4 hours of sunshine per day
  • 18 days with some rainfall in March in Port Isaac18
    18 days with some rainfall
  • 4°C minimum night-time temperature in March in Port Isaac4
    4°C min night temperature
  • 125 mm monthly rainfall in March in Port Isaac125
    125 mm of monthly rainfall

On average 125 mm (4.9 inches) of rain normally falls in Port Isaac during March with rain falling on 18 days of the month.

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Port Isaac weather in April

The average maximum daytime temperature in Port Isaac in April is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 6 hours of sunshine a day in Port Isaac during April.

  • 12°C maximum daytime temperature in April in Port Isaac12
    12°C max day temperature
  • 6 hours of sunshine per day in April in Port Isaac6
    6 hours of sunshine per day
  • 15 days with some rainfall in April in Port Isaac15
    15 days with some rainfall
  • 5°C minimum night-time temperature in April in Port Isaac5
    5°C min night temperature
  • 85 mm monthly rainfall in April in Port Isaac85
    85 mm of monthly rainfall

On average 85 mm (3.3 inches) of rain normally falls in Port Isaac during April with rain falling on 15 days of the month.

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Port Isaac weather in May

The average maximum daytime temperature in Port Isaac in May is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 7 hours of sunshine a day in Port Isaac during May.

  • 15°C maximum daytime temperature in May in Port Isaac15
    15°C max day temperature
  • 7 hours of sunshine per day in May in Port Isaac7
    7 hours of sunshine per day
  • 15 days with some rainfall in May in Port Isaac15
    15 days with some rainfall
  • 7°C minimum night-time temperature in May in Port Isaac7
    7°C min night temperature
  • 86 mm monthly rainfall in May in Port Isaac86
    86 mm of monthly rainfall

On average 86 mm (3.4 inches) of rain normally falls in Port Isaac during May with rain falling on 15 days of the month.

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Port Isaac weather in June

The average maximum daytime temperature in Port Isaac in June is a comfortable 17°C (63°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 Port Isaac during June.

  • 17°C maximum daytime temperature in June in Port Isaac17
    17°C max day temperature
  • 7 hours of sunshine per day in June in Port Isaac7
    7 hours of sunshine per day
  • 13 days with some rainfall in June in Port Isaac13
    13 days with some rainfall
  • 10°C minimum night-time temperature in June in Port Isaac10
    10°C min night temperature
  • 83 mm monthly rainfall in June in Port Isaac83
    83 mm of monthly rainfall

On average 83 mm (3.3 inches) of rain normally falls in Port Isaac during June with rain falling on 13 days of the month.

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Port Isaac weather in July

The average maximum daytime temperature in Port Isaac in July is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 7 hours of sunshine a day in Port Isaac during July.

  • 19°C maximum daytime temperature in July in Port Isaac19
    19°C max day temperature
  • 7 hours of sunshine per day in July in Port Isaac7
    7 hours of sunshine per day
  • 13 days with some rainfall in July in Port Isaac13
    13 days with some rainfall
  • 12°C minimum night-time temperature in July in Port Isaac12
    12°C min night temperature
  • 83 mm monthly rainfall in July in Port Isaac83
    83 mm of monthly rainfall

On average 83 mm (3.3 inches) of rain normally falls in Port Isaac during July with rain falling on 13 days of the month.

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Port Isaac weather in August

The average maximum daytime temperature in Port Isaac in August is a comfortable 19°C (66°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 Port Isaac during August.

  • 19°C maximum daytime temperature in August in Port Isaac19
    19°C max day temperature
  • 6 hours of sunshine per day in August in Port Isaac6
    6 hours of sunshine per day
  • 14 days with some rainfall in August in Port Isaac14
    14 days with some rainfall
  • 12°C minimum night-time temperature in August in Port Isaac12
    12°C min night temperature
  • 110 mm monthly rainfall in August in Port Isaac110
    110 mm of monthly rainfall

On average 110 mm (4.3 inches) of rain normally falls in Port Isaac during August with rain falling on 14 days of the month.

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Port Isaac weather in September

The average maximum daytime temperature in Port Isaac in September is a comfortable 17°C (63°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 Port Isaac during September.

  • 17°C maximum daytime temperature in September in Port Isaac17
    17°C max day temperature
  • 5 hours of sunshine per day in September in Port Isaac5
    5 hours of sunshine per day
  • 16 days with some rainfall in September in Port Isaac16
    16 days with some rainfall
  • 10°C minimum night-time temperature in September in Port Isaac10
    10°C min night temperature
  • 124 mm monthly rainfall in September in Port Isaac124
    124 mm of monthly rainfall

On average 124 mm (4.9 inches) of rain normally falls in Port Isaac during September with rain falling on 16 days of the month.

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Port Isaac weather in October

The average maximum daytime temperature in Port Isaac 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 Port Isaac during October.

  • 14°C maximum daytime temperature in October in Port Isaac14
    14°C max day temperature
  • 3 hours of sunshine per day in October in Port Isaac3
    3 hours of sunshine per day
  • 18 days with some rainfall in October in Port Isaac18
    18 days with some rainfall
  • 8°C minimum night-time temperature in October in Port Isaac8
    8°C min night temperature
  • 158 mm monthly rainfall in October in Port Isaac158
    158 mm of monthly rainfall

On average 158 mm (6.2 inches) of rain normally falls in Port Isaac during October with rain falling on 18 days of the month.

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Port Isaac weather in November

The average maximum daytime temperature in Port Isaac in November is a cool 11°C (52°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 Port Isaac during November.

  • 11°C maximum daytime temperature in November in Port Isaac11
    11°C max day temperature
  • 2 hours of sunshine per day in November in Port Isaac2
    2 hours of sunshine per day
  • 19 days with some rainfall in November in Port Isaac19
    19 days with some rainfall
  • 6°C minimum night-time temperature in November in Port Isaac6
    6°C min night temperature
  • 168 mm monthly rainfall in November in Port Isaac168
    168 mm of monthly rainfall

On average 168 mm (6.6 inches) of rain normally falls in Port Isaac during November with rain falling on 19 days of the month.

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Port Isaac weather in December

The average maximum daytime temperature in Port Isaac in December 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 Port Isaac during December.

  • 9°C maximum daytime temperature in December in Port Isaac9
    9°C max day temperature
  • 2 hours of sunshine per day in December in Port Isaac2
    2 hours of sunshine per day
  • 20 days with some rainfall in December in Port Isaac20
    20 days with some rainfall
  • 4°C minimum night-time temperature in December in Port Isaac4
    4°C min night temperature
  • 188 mm monthly rainfall in December in Port Isaac188
    188 mm of monthly rainfall

On average 188 mm (7.4 inches) of rain normally falls in Port Isaac during December with rain falling on 20 days of the month.

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