Measurements:
°C
°F
CURRENT WEATHER
05:15
Rennes
62°F
NW 8 mph
Feels like: 62°F
Precip: 39%
World Resorts France Rennes Weather

14 Day Weather Forecast

09.29
tue
DAY
70°F
N 10 mph
precip
24%
NIGHT
68°F
NW 7 mph
precip
21%
09.30
wed
DAY
66°F
NE 7 mph
precip
16%
NIGHT
62°F
N 9 mph
precip
11%
10.01
thu
DAY
64°F
E 6 mph
precip
5%
NIGHT
58°F
S 1 mph
precip
19%
10.02
fri
DAY
64°F
W 5 mph
precip
13%
NIGHT
56°F
S 8 mph
precip
12%
10.03
sat
DAY
68°F
SW 6 mph
precip
2%
NIGHT
56°F
S 7 mph
precip
12%
10.04
sun
DAY
66°F
SE 6 mph
precip
8%
NIGHT
52°F
SE 6 mph
precip
23%
10.05
mon
DAY
60°F
SW 9 mph
precip
17%
NIGHT
56°F
S 14 mph
precip
16%
10.06
tue
DAY
64°F
SW 16 mph
precip
12%
NIGHT
58°F
NW 11 mph
precip
18%
10.07
wed
DAY
62°F
NW 9 mph
precip
13%
NIGHT
52°F
NE 6 mph
precip
24%
10.08
thu
DAY
62°F
SW 7 mph
precip
2%
NIGHT
50°F
S 7 mph
precip
16%
10.09
fri
DAY
62°F
SE 6 mph
precip
12%
NIGHT
52°F
SE 4 mph
precip
22%
10.10
sat
DAY
62°F
E 7 mph
precip
11%
NIGHT
52°F
E 3 mph
precip
11%
10.11
sun
DAY
64°F
NE 11 mph
precip
10%
NIGHT
60°F
NE 11 mph
precip
20%
10.12
mon
DAY
58°F
NE 11 mph
precip
14%
NIGHT
48°F
NE 9 mph
precip
5%

Rennes Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Rennes was 69.1°F. The maximum and minimum values were 67.8°F and 70.6°F respectively.

Rennes on the Weather Map

Best Time to Visit Rennes
The most sunny months:
July 13 days
August 12 days
April 10 days
The most warm months:
July 77.3 °F
August 77.2 °F
June 72.5 °F
Warmest sea temperature:
August 67.8 °F
September 66.6 °F
July 65.9 °F
The most cold months:
January 45.8 °F
February 48.0 °F
December 48.5 °F
The most rainy months:
June 5 days
November 3 days
April 3 days
The most windy months:
February 11 mph
December 11 mph
January 10 mph
more details
France Resorts:
NAME
F°
Antibes +74
Bordeaux +68
Cannes +74
Corsica +70
Deauville +64
Etretat +66
Marseilles +74
Menton +76
Montpellier +74
Nice +68
Paris +68
Perpignan +72
Saint-Tropez +74
Toulon +76
Toulouse +68
all resorts
24 Hours Weather Forecast
Rennes
Local time: 05:15
29 sep, tuesday
0600 62°F
NW
8 mph
0900 64°F
N
10 mph
1200 70°F
N
10 mph
1500 78°F
NW
17 mph
1800 80°F
N
16 mph
2100 68°F
N
9 mph
30 sep, wednesday
0000 68°F
NW
7 mph
0300 74°F
N
16 mph