Saint-Malo, where it's located

The climate of Saint-Malo is generally cool and wet, rainy and windy all year round, but especially in autumn and winter. However, there may also be sunny days, especially in summer.
The city is located in the north-west of France, on the northern coast of Brittany.
The average temperature of the coldest month (January) is of 5.5 °C (42 °F), that of the warmest months (July, August) is of 17.5 °C (64 °F). Here are the average temperatures.
Saint-Malo - Average temperatures
Min (°C)33469111313121064
Max (°C)891113172022222016129
Min (°F)373739434852555554504339
Max (°F)464852556368727268615448

Precipitation amounts to 780 millimeters (30.7 inches) per year. It ranges from 40 mm (1.6 in) in the driest month (July) to 95 mm (3.7 in) in the wettest (November). The rains are frequent especially from October to March. Here is the average precipitation.
Saint-Malo - Average precipitation

On average, there are around 1,670 sunshine hours per year. Here are the average sunshine hours per day.
Saint-Malo - Sunshine

The sea temperature ranges between 9 °C (48 °F) and 18 °C (64 °F). So, it never becomes warm for swimming. Here are the average sea temperatures.
Saint-Malo - Sea temperature
Temp (°C)1099101214171817151312
Temp (°F)504848505457636463595554


Best Time

The best time to visit Saint-Malo runs from mid-May to mid-September, since it is the warmest and sunniest period of the year. Sometimes, nights can be cool or even a little cold even in these months, so it can be useful to bring a sweatshirt or sweater and a light jacket for the evening.