Current sea water temperature:
+47.8°F
| Minimum sea water temperature in January: | 52.5°F |
| Maximum sea water temperature in January: | 46.2°F |
| Average sea water temperature in January: | 48.5°F |
| more information | |
14 days
forecast
forecast
| Rennes |
monthly
weather
weather
| Rennes |
Sea water temperature for the last 10 days:
| January 12 | 47.8°F | January 7 | 48.2°F |
| January 11 | 47.8°F | January 6 | 48.4°F |
| January 10 | 47.8°F | January 5 | 48.6°F |
| January 9 | 48.0°F | January 4 | 48.4°F |
| January 8 | 48.2°F | January 3 | 48.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Rennes?
Based on the data about daily sea water temperature for the last three years the warmest sea in Rennes was noticed in August, September and July.
Monthly Sea Temperatures in Rennes, °F
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.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 64.9°F. The highest and lowest sea temperatures during the month were 66.9°F and 62.8°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 65.6°F. The highest and lowest sea temperatures during the month were 66.7°F and 63.7°F.
current
weather
weather
| Rennes |
weather in
January
January
| Rennes |
Best time for vacation in Rennes
Rennes on a weather map
Places in France:
Name
°F
24 Hours Forecast
Rennes
Local time: 00:36
January 13, tuesday
0300
52°F
N
12 mph
12 mph
0600
50°F
N
11 mph
11 mph
0900
45°F
N
14 mph
14 mph
1200
48°F
N
15 mph
15 mph
1500
52°F
N
14 mph
14 mph
1800
50°F
N
13 mph
13 mph
2100
50°F
N
11 mph
11 mph
January 14, wednesday
0000
48°F
E
7 mph
7 mph
