Measurements:
°C
°F
Cassis
52°F
SE 39 mph
Feels like: 42°F
Precip: 0%
World Resorts France Cassis Weather

Cassis Sea Water Temperature

Current Sea Water Temperature:
+59.0°F
Maximum Sea Water Temperature in March: 59.8°F
Minimum Sea Water Temperature in March: 55.4°F
Average water temperature in March: 57.3°F

Sea Water Temperature for the Last 10 Days:

March 30 59.0°F March 25 59.0°F
March 29 58.8°F March 24 59.2°F
March 28 58.8°F March 23 59.2°F
March 27 59.0°F March 22 59.2°F
March 26 59.8°F March 21 59.2°F

When is the Warmest Sea for Cassis?

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

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 Cassis was 77.4°F. The maximum and minimum values were 69.6°F and 82.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Cassis was 75.7°F. The maximum and minimum values were 66.2°F and 84.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Cassis was 73.0°F. The maximum and minimum values were 68.4°F and 77.2°F respectively.

Best Time to Visit Cassis
The most sunny months:
July 29 days
August 28 days
June 25 days
The most warm months:
August 85.3 °F
July 85.2 °F
June 79.2 °F
Warmest sea temperature:
August 77.4 °F
July 75.3 °F
September 74.8 °F
The most cold months:
January 51.5 °F
February 52.7 °F
December 54.4 °F
The most rainy months:
November 4 days
October 3 days
December 3 days
The most windy months:
January 13 mph
March 13 mph
February 12 mph

Cassis 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
Cassis
Local time: 20:41
30 mar, monday
2100 52°F
SE
39 mph
31 mar, tuesday
0000 52°F
SE
37 mph
0300 52°F
SE
36 mph
0600 48°F
SE
30 mph
0900 50°F
SE
25 mph
1200 56°F
SE
14 mph
1500 58°F
SE
27 mph
1800 56°F
SE
31 mph