18.12
thu
thu
Day
55°F
W 11 mph
Precip.
0%
0%
Night
55°F
W 15 mph
Precip.
0%
0%
19.12
fri
fri
Day
57°F
W 16 mph
Precip.
87%
87%
Night
55°F
W 9 mph
Precip.
0%
0%
20.12
sat
sat
Day
55°F
W 12 mph
Precip.
100%
100%
Night
55°F
W 18 mph
Precip.
100%
100%
21.12
sun
sun
Day
55°F
NW 4 mph
Precip.
100%
100%
Night
54°F
NW 14 mph
Precip.
80%
80%
22.12
mon
mon
Day
55°F
NW 24 mph
Precip.
100%
100%
Night
54°F
W 19 mph
Precip.
100%
100%
23.12
tue
tue
Day
54°F
W 22 mph
Precip.
100%
100%
Night
52°F
W 22 mph
Precip.
100%
100%
24.12
wed
wed
Day
52°F
NW 20 mph
Precip.
100%
100%
Night
52°F
W 9 mph
Precip.
100%
100%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 61.2°F. The highest and lowest sea temperatures during the month were 62.4°F and 60.3°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 57.9°F. The highest and lowest sea temperatures during the month were 58.6°F and 57.0°F.
Air temperature in Cassis, °F
Precipitation total in Cassis, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Cassis
Cassis on a weather map
Places in France:
Name
°F
24 Hours Forecast
Cassis
Local time: 02:42
December 18, thursday
0300
54°F
W
7 mph
7 mph
0600
52°F
W
8 mph
8 mph
0900
52°F
W
11 mph
11 mph
1200
55°F
W
11 mph
11 mph
1500
57°F
W
14 mph
14 mph
1800
55°F
W
16 mph
16 mph
2100
55°F
W
15 mph
15 mph
December 19, friday
0000
55°F
W
15 mph
15 mph
