Measurements:
°C
°F
CURRENT WEATHER
09:16
Rennes
84°F
W 9 mph
Feels like: 84°F
Precip: 1%
World Resorts France Rennes Weather

7 Day Weather Forecast

07.10
fri
DAY
100°F
SW 10 mph
precip
1%
NIGHT
78°F
S 11 mph
precip
1%
07.11
sat
DAY
100°F
W 13 mph
precip
1%
NIGHT
70°F
S 11 mph
precip
28%
07.12
sun
DAY
100°F
SW 14 mph
precip
1%
NIGHT
72°F
SW 11 mph
precip
6%
07.13
mon
DAY
90°F
W 17 mph
precip
3%
NIGHT
72°F
W 6 mph
precip
12%
07.14
tue
DAY
96°F
NW 4 mph
precip
3%
NIGHT
78°F
SW 10 mph
precip
5%
07.15
wed
DAY
94°F
NE 7 mph
precip
1%
NIGHT
72°F
E 7 mph
precip
7%
07.16
thu
DAY
88°F
SE 8 mph
precip
1%
NIGHT
66°F
E 8 mph
precip
35%

Rennes Sea Water Temperature in July, °F

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Rennes was 18.7°F. The maximum and minimum values were 17.6°F and 19.3°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 72.5 °F
Warmest sea temperature:
August 67.6 °F
September 66.5 °F
July 65.7 °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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