Click on a day for an hourly weather forecast
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.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 5° | 8 | 22 | 1 | 106 mm | Bad | Saint Malo in January |
| February | 9° / 5° | 8 | 18 | 2 | 93 mm | Awful | Saint Malo in February |
| March | 11° / 6° | 6 | 25 | 1 | 73 mm | Ok | Saint Malo in March |
| April | 13° / 7° | 5 | 25 | 0 | 70 mm | Ok | Saint Malo in April |
| May | 16° / 9° | 5 | 26 | 0 | 77 mm | Good | Saint Malo in May |
| June | 19° / 12° | 6 | 24 | 0 | 98 mm | Good | Saint Malo in June |
| July | 21° / 14° | 4 | 27 | 0 | 70 mm | Good | Saint Malo in July |
| August | 21° / 14° | 5 | 26 | 0 | 90 mm | Good | Saint Malo in August |
| September | 20° / 13° | 4 | 26 | 0 | 63 mm | Good | Saint Malo in September |
| October | 16° / 11° | 6 | 25 | 0 | 105 mm | Good | Saint Malo in October |
| November | 12° / 9° | 7 | 22 | 0 | 122 mm | Bad | Saint Malo in November |
| December | 10° / 7° | 9 | 21 | 1 | 120 mm | Bad | Saint Malo in December |