17.05
sun
sun
Day
55°F
SE 6 mph
Precip.
63%
63%
Night
46°F
E 1 mph
Precip.
81%
81%
18.05
mon
mon
Day
52°F
N 7 mph
Precip.
100%
100%
Night
52°F
N 13 mph
Precip.
100%
100%
19.05
tue
tue
Day
63°F
NE 16 mph
Precip.
100%
100%
Night
52°F
NE 9 mph
Precip.
0%
0%
20.05
wed
wed
Day
66°F
NE 12 mph
Precip.
0%
0%
Night
54°F
NE 7 mph
Precip.
0%
0%
21.05
thu
thu
Day
68°F
NW 5 mph
Precip.
0%
0%
Night
59°F
NW 7 mph
Precip.
0%
0%
22.05
fri
fri
Day
73°F
NW 9 mph
Precip.
0%
0%
Night
64°F
NW 7 mph
Precip.
0%
0%
23.05
sat
sat
Day
73°F
N 2 mph
Precip.
0%
0%
Night
55°F
NE 8 mph
Precip.
0%
0%
24.05
sun
sun
Day
73°F
SW 9 mph
Precip.
0%
0%
Night
59°F
SW 8 mph
Precip.
0%
0%
25.05
mon
mon
Day
70°F
SW 14 mph
Precip.
0%
0%
Night
57°F
SW 9 mph
Precip.
0%
0%
26.05
tue
tue
Day
72°F
SW 14 mph
Precip.
0%
0%
Night
59°F
SW 9 mph
Precip.
46%
46%
27.05
wed
wed
Day
73°F
W 11 mph
Precip.
100%
100%
Night
63°F
SW 9 mph
Precip.
0%
0%
28.05
thu
thu
Day
73°F
SW 10 mph
Precip.
28%
28%
Night
55°F
S 9 mph
Precip.
0%
0%
29.05
fri
fri
Day
64°F
SW 9 mph
Precip.
100%
100%
Night
55°F
SE 10 mph
Precip.
0%
0%
30.05
sat
sat
Day
63°F
SE 6 mph
Precip.
0%
0%
Night
64°F
SW 8 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 56.2°F. The highest and lowest sea temperatures during the month were 57.2°F and 55.8°F.
Air temperature in Rennes, °F
Precipitation total in Rennes, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Rennes
Rennes on a weather map
Places in France:
Name
°F
24 Hours Forecast
Rennes
Local time: 04:03
May 17, sunday
0600
46°F
NE
5 mph
5 mph
0900
50°F
SE
5 mph
5 mph
1200
55°F
SE
6 mph
6 mph
1500
59°F
E
9 mph
9 mph
1800
57°F
SE
9 mph
9 mph
2100
50°F
S
5 mph
5 mph
May 18, monday
0000
46°F
E
1 mph
1 mph
0300
46°F
E
6 mph
6 mph
