Measurements:
°C
°F
Cassis
64°F
NW 14 mph
Feels like: 64°F
Precip: 100%
World Resorts France Cassis Weather

Cassis Sea Water Temperature

Current Sea Water Temperature:
+65.6°F
Maximum Sea Water Temperature in May: 70.8°F
Minimum Sea Water Temperature in May: 57.6°F
Average water temperature in May: 63.3°F

Sea Water Temperature for the Last 10 Days:

May 09 65.6°F May 04 64.0°F
May 08 64.4°F May 03 63.8°F
May 07 64.8°F May 02 64.2°F
May 06 64.6°F May 01 64.4°F
May 05 64.2°F April 30 64.8°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 +48
Antibes +66
Biarritz +58
Bordeaux +58
Cannes +64
Corsica +58
Etretat +56
Marseilles +66
Menton +66
Montpellier +58
Nice +64
Paris +56
Perpignan +58
Saint-Tropez +66
Toulouse +58
24 Hours Weather Forecast
Cassis
Local time: 04:01
10 may, sunday
0600 64°F
W
19 mph
0900 64°F
W
21 mph
1200 64°F
W
18 mph
1500 64°F
NW
14 mph
1800 64°F
NW
11 mph
2100 62°F
NW
12 mph
11 may, monday
0000 62°F
NW
12 mph
0300 62°F
N
9 mph