Saint Mawes weather

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

• Saint Mawes weather averages
• Saint Mawes weather by month
• Back to Cornwall
• Back to England

Saint Mawes weather averages

Check the Saint Mawes 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 Saint Mawes, Cornwall, England.

Back to top

Saint Mawes weather by month

Check the weather for Saint Mawes, 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.

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

Back to top

Saint Mawes weather in January

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during January.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 21
  21 days with some rainfall
• 4
  4°C min night temperature
• 138
  138 mm of monthly rainfall

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

Back to months

Saint Mawes weather in February

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during February.

• 9
  9°C max day temperature
• 3
  3 hours of sunshine per day
• 17
  17 days with some rainfall
• 4
  4°C min night temperature
• 106
  106 mm of monthly rainfall

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

Back to months

Saint Mawes weather in March

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during March.

• 10
  10°C max day temperature
• 4
  4 hours of sunshine per day
• 17
  17 days with some rainfall
• 5
  5°C min night temperature
• 93
  93 mm of monthly rainfall

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

Back to months

Saint Mawes weather in April

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during April.

• 12
  12°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 6
  6°C min night temperature
• 68
  68 mm of monthly rainfall

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

Back to months

Saint Mawes weather in May

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during May.

• 15
  15°C max day temperature
• 7
  7 hours of sunshine per day
• 13
  13 days with some rainfall
• 8
  8°C min night temperature
• 64
  64 mm of monthly rainfall

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

Back to months

Saint Mawes weather in June

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during June.

• 17
  17°C max day temperature
• 7
  7 hours of sunshine per day
• 12
  12 days with some rainfall
• 11
  11°C min night temperature
• 67
  67 mm of monthly rainfall

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

Back to months

Saint Mawes weather in July

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during July.

• 19
  19°C max day temperature
• 7
  7 hours of sunshine per day
• 12
  12 days with some rainfall
• 13
  13°C min night temperature
• 60
  60 mm of monthly rainfall

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

Back to months

Saint Mawes weather in August

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during August.

• 19
  19°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 13
  13°C min night temperature
• 79
  79 mm of monthly rainfall

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

Back to months

Saint Mawes weather in September

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during September.

• 17
  17°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 11
  11°C min night temperature
• 88
  88 mm of monthly rainfall

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

Back to months

Saint Mawes weather in October

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during October.

• 14
  14°C max day temperature
• 3
  3 hours of sunshine per day
• 18
  18 days with some rainfall
• 9
  9°C min night temperature
• 119
  119 mm of monthly rainfall

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

Back to months

Saint Mawes weather in November

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during November.

• 11
  11°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 7
  7°C min night temperature
• 136
  136 mm of monthly rainfall

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

Back to months

Saint Mawes weather in December

The average maximum daytime temperature in Saint Mawes 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 Saint Mawes during December.

• 10
  10°C max day temperature
• 2
  2 hours of sunshine per day
• 21
  21 days with some rainfall
• 6
  6°C min night temperature
• 143
  143 mm of monthly rainfall

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

Back to months