Measurements:
°C
°F
CURRENT WEATHER
21:03
Rennes
66°F
SE 5 mph
Feels like: 66°F
Precip: 22%
World Resorts France Rennes Weather

7 Day Weather Forecast

08.19
wed
DAY
70°F
N 14 mph
precip
27%
NIGHT
60°F
SE 4 mph
precip
22%
08.20
thu
DAY
74°F
E 12 mph
precip
13%
NIGHT
62°F
S 4 mph
precip
22%
08.21
fri
DAY
74°F
E 8 mph
precip
2%
NIGHT
56°F
S 6 mph
precip
31%
08.22
sat
DAY
68°F
S 6 mph
precip
4%
NIGHT
56°F
S 9 mph
precip
43%
08.23
sun
DAY
74°F
SW 17 mph
precip
9%
NIGHT
70°F
SW 17 mph
precip
10%
08.24
mon
DAY
74°F
W 7 mph
precip
3%
NIGHT
64°F
SW 5 mph
precip
3%
08.25
tue
DAY
78°F
N 7 mph
precip
10%
NIGHT
64°F
N 4 mph
precip
25%

Rennes Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Rennes was 20.5°F. The maximum and minimum values were 19.6°F and 21.2°F respectively.

Rennes on the Weather Map

Best Time to Visit Rennes
The most sunny months:
July 13 days
August 12 days
September 11 days
The most warm months:
July 77.3 °F
August 76.8 °F
June 72.5 °F
Warmest sea temperature:
August 67.6 °F
September 66.5 °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
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