21.12
sun
sun
Day
46°F
W 9 mph
Precip.
100%
100%
Night
48°F
W 7 mph
Precip.
0%
0%
22.12
mon
mon
Day
48°F
NW 8 mph
Precip.
0%
0%
Night
43°F
SW 6 mph
Precip.
0%
0%
23.12
tue
tue
Day
48°F
S 14 mph
Precip.
0%
0%
Night
39°F
S 11 mph
Precip.
0%
0%
24.12
wed
wed
Day
41°F
SW 14 mph
Precip.
0%
0%
Night
32°F
SW 12 mph
Precip.
0%
0%
25.12
thu
thu
Day
34°F
SW 17 mph
Precip.
0%
0%
Night
23°F
SW 7 mph
Precip.
0%
0%
26.12
fri
fri
Day
36°F
SW 11 mph
Precip.
0%
0%
Night
30°F
SW 12 mph
Precip.
0%
0%
27.12
sat
sat
Day
37°F
SW 15 mph
Precip.
0%
0%
Night
34°F
SW 11 mph
Precip.
0%
0%
28.12
sun
sun
Day
43°F
SW 15 mph
Precip.
0%
0%
Night
41°F
SW 12 mph
Precip.
0%
0%
29.12
mon
mon
Day
45°F
SW 11 mph
Precip.
0%
0%
Night
46°F
SW 13 mph
Precip.
0%
0%
30.12
tue
tue
Day
46°F
SW 11 mph
Precip.
0%
0%
Night
43°F
NE 7 mph
Precip.
0%
0%
31.12
wed
wed
Day
45°F
S 6 mph
Precip.
22%
22%
Night
37°F
SW 7 mph
Precip.
0%
0%
01.01
thu
thu
Day
43°F
S 9 mph
Precip.
0%
0%
Night
36°F
NE 4 mph
Precip.
0%
0%
02.01
fri
fri
Day
43°F
E 4 mph
Precip.
0%
0%
Night
37°F
E 6 mph
Precip.
0%
0%
03.01
sat
sat
Day
48°F
E 9 mph
Precip.
0%
0%
Night
43°F
E 7 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 52.1°F. The highest and lowest sea temperatures during the month were 53.6°F and 51.1°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: 12:23
December 21, sunday
1500
50°F
W
11 mph
11 mph
1800
48°F
SW
6 mph
6 mph
2100
50°F
NW
8 mph
8 mph
December 22, monday
0000
48°F
W
7 mph
7 mph
0300
48°F
NW
8 mph
8 mph
0600
46°F
NW
9 mph
9 mph
0900
45°F
NW
9 mph
9 mph
1200
48°F
NW
8 mph
8 mph
