The temperatures in Saint Malo in August are comfortable with low of 14°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Saint Malo during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Saint Malo in August 2026.
If you’re planning to visit Saint Malo in the near future, we highly recommend that you review the 14 day weather forecast for Saint Malo before you arrive.
Temperatures
21° / 14°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
90
mm
Sun Hours
10.0
Hrs
