Long-term weather forecast
Long-term weather forecast

August weather forecast and Climate
St-Malo, France

  • The average high temperature in August: 22°C

The warmest month (with the highest average high temperature) is August (22°C).
The month with the lowest average high temperature is January (8.8°C).

  • The average low temperature in August: 13.6°C

The month with the highest average low temperature is August (13.6°C).
The coldest month (with the lowest average low temperature) is February (3.1°C).

  • The average humidity in August: 81%

Months with the highest relative humidity are October and December (85%).
Months with the lowest relative humidity are March, April and May (79%).

  • The average rainfall in August: 49.4mm

Wettest months (with the highest rainfall) are October and November (86.8mm).
The driest month (with the lowest rainfall) is June (49.1mm).

  • The average rainfall days in August: 8 days

The month with the highest number of rainy days is November (13.8 days).
The month with the lowest number of rainy days is July (7.6 days).

  • The average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.5 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

  • The average sea temperature in August: 18°C

The best month for swimming (with the highest average sea temperature) is September (18.2°C).
The coldest month (with the lowest average sea temperature) is February (8.7°C).

  • The average daylight in August: 14h

Months with the longest days are June and July (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8h).

  • The average sunshine in August: 6.4h

The month with most sunshine is June (Average sunshine: 6.9h).
The month with least sunshine is December (Average sunshine: 2.1h).

  • The average UV index in August: 6

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).