05.08
wed
wed
Day
75°F
E 11 mph
Precip.
2%
2%
Night
55°F
SE 7 mph
Precip.
13%
13%
06.08
thu
thu
Day
72°F
S 8 mph
Precip.
1%
1%
Night
52°F
S 9 mph
Precip.
13%
13%
07.08
fri
fri
Day
75°F
SW 4 mph
Precip.
1%
1%
Night
59°F
S 8 mph
Precip.
5%
5%
08.08
sat
sat
Day
86°F
NW 8 mph
Precip.
1%
1%
Night
70°F
S 4 mph
Precip.
1%
1%
09.08
sun
sun
Day
86°F
N 7 mph
Precip.
8%
8%
Night
61°F
SE 7 mph
Precip.
8%
8%
10.08
mon
mon
Day
81°F
SE 10 mph
Precip.
1%
1%
Night
61°F
NE 7 mph
Precip.
16%
16%
11.08
tue
tue
Day
84°F
SW 5 mph
Precip.
1%
1%
Night
68°F
NE 8 mph
Precip.
3%
3%
12.08
wed
wed
Day
91°F
N 6 mph
Precip.
0%
0%
Night
66°F
S 10 mph
Precip.
6%
6%
13.08
thu
thu
Day
82°F
SE 9 mph
Precip.
2%
2%
Night
63°F
SE 9 mph
Precip.
17%
17%
14.08
fri
fri
Day
73°F
SE 11 mph
Precip.
4%
4%
Night
54°F
SE 7 mph
Precip.
12%
12%
15.08
sat
sat
Day
66°F
E 5 mph
Precip.
4%
4%
Night
61°F
NE 9 mph
Precip.
15%
15%
16.08
sun
sun
Day
73°F
E 14 mph
Precip.
9%
9%
Night
55°F
SE 6 mph
Precip.
12%
12%
17.08
mon
mon
Day
72°F
N 8 mph
Precip.
4%
4%
Night
64°F
NE 12 mph
Precip.
25%
25%
18.08
tue
tue
Day
75°F
NE 20 mph
Precip.
58%
58%
Night
66°F
NE 10 mph
Precip.
7%
7%
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.3°F. The highest and lowest sea temperatures during the month were 68.2°F and 65.7°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: 23:39
August 06, thursday
0000
55°F
SE
7 mph
7 mph
0300
54°F
SE
6 mph
6 mph
0600
54°F
SE
6 mph
6 mph
0900
61°F
S
7 mph
7 mph
1200
72°F
S
8 mph
8 mph
1500
77°F
S
13 mph
13 mph
1800
75°F
S
14 mph
14 mph
2100
64°F
S
12 mph
12 mph
