Measurements:
°C
°F
Saint Malo
50°F
SE 17 mph
Feels like: 44°F
Precip: 78%
World Resorts France Saint Malo Weather

Saint Malo Sea Water Temperature

Current Sea Water Temperature:
+51.0°F
Maximum Sea Water Temperature in March: 51.2°F
Minimum Sea Water Temperature in March: 43.2°F
Average water temperature in March: 47.7°F

Sea Water Temperature for the Last 10 Days:

March 30 51.0°F March 25 51.2°F
March 29 50.8°F March 24 51.0°F
March 28 51.2°F March 23 51.0°F
March 27 50.6°F March 22 51.2°F
March 26 51.0°F March 21 50.8°F

When is the Warmest Sea for Saint Malo?

According to our data for the last three years for Saint Malo the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Saint Malo was 70.0°F. The maximum and minimum values were 68.8°F and 71.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Saint Malo was 66.9°F. The maximum and minimum values were 64.2°F and 69.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Saint Malo was 68.5°F. The maximum and minimum values were 67.0°F and 69.4°F respectively.

Best Time to Visit Saint Malo
The most sunny months:
July 13 days
August 12 days
April 11 days
The most warm months:
August 71.6 °F
July 70.9 °F
September 68.3 °F
Warmest sea temperature:
August 67.8 °F
September 66.6 °F
July 66.0 °F
The most cold months:
January 47.2 °F
February 48.0 °F
December 50.3 °F
The most rainy months:
November 6 days
December 6 days
January 5 days
The most windy months:
December 15 mph
February 14 mph
January 14 mph

Saint Malo on the Weather Map

France Resorts:
NAME
Annecy +38
Antibes +56
Biarritz +54
Bordeaux +54
Cannes +56
Chamonix +22
Corsica +46
Etretat +50
Marseilles +52
Menton +58
Montpellier +52
Nice +54
Paris +50
Saint-Tropez +58
Toulouse +48
24 Hours Weather Forecast
Saint Malo
Local time: 20:46
30 mar, monday
2100 50°F
SE
17 mph
31 mar, tuesday
0000 50°F
SE
16 mph
0300 48°F
SE
14 mph
0600 48°F
SE
11 mph
0900 50°F
SE
9 mph
1200 52°F
SE
9 mph
1500 54°F
SE
12 mph
1800 52°F
SE
14 mph