Current sea water temperature:
+51.3°F
| Minimum sea water temperature in April: | 55.2°F |
| Maximum sea water temperature in April: | 44.6°F |
| Average sea water temperature in April: | 50.9°F |
| more information | |
14 days
forecast
forecast
| Rennes |
monthly
weather
weather
| Rennes |
Sea water temperature for the last 10 days:
| April 6 | 51.3°F | April 1 | 50.9°F |
| April 5 | 51.4°F | March 31 | 50.9°F |
| April 4 | 50.7°F | March 30 | 50.9°F |
| April 3 | 51.3°F | March 29 | 50.9°F |
| April 2 | 51.1°F | March 28 | 50.9°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
April
April
| Rennes |
Best time for vacation in Rennes
Rennes on a weather map
Places in France:
Name
°F
24 Hours Forecast
Rennes
Local time: 16:58
April 06, monday
1800
64°F
NW
11 mph
11 mph
2100
55°F
W
9 mph
9 mph
April 07, tuesday
0000
54°F
W
13 mph
13 mph
0300
52°F
W
14 mph
14 mph
0600
50°F
NW
12 mph
12 mph
0900
54°F
NW
13 mph
13 mph
1200
64°F
NW
15 mph
15 mph
1500
70°F
NW
14 mph
14 mph
