Measurements:
°C
°F
Rennes
54°F
W 6 mph
Feels like: 52°F
Precip: 100%
World Resorts France Rennes Weather

7 Day Weather Forecast

05.10
sun
DAY
60°F
SW 9 mph
precip
100%
NIGHT
50°F
SW 12 mph
precip
100%
05.11
mon
DAY
52°F
S 11 mph
precip
0%
NIGHT
42°F
SE 6 mph
precip
0%
05.12
tue
DAY
54°F
SE 7 mph
precip
84%
NIGHT
44°F
E 7 mph
precip
65%
05.13
wed
DAY
56°F
E 17 mph
precip
87%
NIGHT
40°F
E 10 mph
precip
0%
05.14
thu
DAY
54°F
S 16 mph
precip
100%
NIGHT
40°F
SE 7 mph
precip
0%
05.15
fri
DAY
56°F
S 5 mph
precip
100%
NIGHT
42°F
SE 4 mph
precip
0%
05.16
sat
DAY
48°F
NW 8 mph
precip
100%
NIGHT
48°F
NW 4 mph
precip
100%

Rennes Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Rennes was 13.9°F. The maximum and minimum values were 12.8°F and 14.9°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 45.8 °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