Measurements:
°C
°F
CURRENT WEATHER
10:17
Rennes
52°F
N 21 mph
Feels like: 46°F
Precip: 100%
World Resorts France Rennes Weather

7 Day Weather Forecast

12.18
thu
DAY
56°F
N 23 mph
precip
0%
NIGHT
54°F
E 13 mph
precip
82%
12.19
fri
DAY
50°F
E 6 mph
precip
0%
NIGHT
40°F
N 6 mph
precip
0%
12.20
sat
DAY
44°F
NW 9 mph
precip
0%
NIGHT
44°F
NW 10 mph
precip
0%
12.21
sun
DAY
48°F
N 14 mph
precip
100%
NIGHT
38°F
NW 7 mph
precip
0%
12.22
mon
DAY
42°F
W 9 mph
precip
0%
NIGHT
42°F
SE 5 mph
precip
0%
12.23
tue
DAY
46°F
NE 5 mph
precip
0%
NIGHT
38°F
NW 2 mph
precip
0%
12.24
wed
DAY
44°F
S 7 mph
precip
55%
NIGHT
36°F
S 7 mph
precip
0%

Rennes Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Rennes was 11.2°F. The maximum and minimum values were 10.7°F and 12.0°F respectively.

Rennes on the Weather Map

Best Time to Visit Rennes
The most sunny months:
August 12 days
July 12 days
September 11 days
The most warm months:
August 76.8 °F
July 76.5 °F
June 71.9 °F
Warmest sea temperature:
August 67.6 °F
September 66.5 °F
July 65.7 °F
The most cold months:
January 45.7 °F
February 47.7 °F
December 48.5 °F
The most rainy months:
June 5 days
April 4 days
November 3 days
The most windy months:
February 11 mph
December 11 mph
March 10 mph
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