Measurements:
°C
°F
Cassis
82°F
NW 7 mph
Feels like: 88°F
Precip: 8%
World Resorts France Cassis Weather

Cassis Sea Water Temperature

Current Sea Water Temperature:
+83.0°F
Maximum Sea Water Temperature in August: 86.4°F
Minimum Sea Water Temperature in August: 61.2°F
Average water temperature in August: 77.6°F

Sea Water Temperature for the Last 10 Days:

August 19 83.0°F August 14 86.0°F
August 18 84.8°F August 13 86.0°F
August 17 85.2°F August 12 85.4°F
August 16 85.8°F August 11 84.4°F
August 15 86.4°F August 10 82.6°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Cassis was 83.7°F. The maximum and minimum values were 80.6°F and 86.4°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Cassis was 80.4°F. The maximum and minimum values were 75.4°F and 84.4°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:
July 85.4 °F
August 85.3 °F
June 79.4 °F
Warmest sea temperature:
August 77.4 °F
July 75.7 °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
Antibes +84
Arcachon +72
Cannes +84
Corsica +84
Deauville +62
Etretat +68
Marseilles +84
Menton +84
Montpellier +84
Nice +80
Paris +72
Perpignan +88
Saint-Tropez +86
Toulon +84
Toulouse +86
24 Hours Weather Forecast
Cassis
Local time: 20:10
19 aug, wednesday
2100 82°F
NW
7 mph
20 aug, thursday
0000 82°F
S
1 mph
0300 82°F
W
5 mph
0600 80°F
NW
8 mph
0900 82°F
NW
9 mph
1200 84°F
NW
9 mph
1500 86°F
NW
6 mph
1800 82°F
N
9 mph