19.12
fri
fri
Day
50°F
SE 6 mph
Precip.
0%
0%
Night
41°F
N 5 mph
Precip.
0%
0%
20.12
sat
sat
Day
45°F
N 11 mph
Precip.
0%
0%
Night
45°F
NW 14 mph
Precip.
88%
88%
21.12
sun
sun
Day
46°F
N 11 mph
Precip.
73%
73%
Night
43°F
NW 4 mph
Precip.
0%
0%
22.12
mon
mon
Day
43°F
W 9 mph
Precip.
0%
0%
Night
39°F
W 6 mph
Precip.
0%
0%
23.12
tue
tue
Day
43°F
W 9 mph
Precip.
0%
0%
Night
43°F
W 9 mph
Precip.
100%
100%
24.12
wed
wed
Day
46°F
N 9 mph
Precip.
61%
61%
Night
43°F
NE 9 mph
Precip.
47%
47%
25.12
thu
thu
Day
45°F
N 6 mph
Precip.
0%
0%
Night
43°F
NW 11 mph
Precip.
23%
23%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 52.2°F. The highest and lowest sea temperatures during the month were 53.6°F and 51.3°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 48.0°F. The highest and lowest sea temperatures during the month were 49.1°F and 46.9°F.
Air temperature in Rennes, °F
Precipitation total in Rennes, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Rennes
Rennes on a weather map
Places in France:
Name
°F
24 Hours Forecast
Rennes
Local time: 02:28
December 19, friday
0300
50°F
E
6 mph
6 mph
0600
48°F
SE
6 mph
6 mph
0900
45°F
SE
6 mph
6 mph
1200
50°F
SE
6 mph
6 mph
1500
52°F
E
5 mph
5 mph
1800
45°F
NE
4 mph
4 mph
2100
43°F
NE
4 mph
4 mph
December 20, saturday
0000
41°F
N
5 mph
5 mph
