Current sea water temperature:
+67.6°F
| Minimum sea water temperature in June: | 67.6°F |
| Maximum sea water temperature in June: | 54.5°F |
| Average sea water temperature in June: | 60.3°F |
| more information | |
14 days
forecast
forecast
| Rennes |
monthly
weather
weather
| Rennes |
Sea water temperature for the last 10 days:
| June 26 | 67.6°F | June 21 | 63.7°F |
| June 25 | 66.7°F | June 20 | 63.5°F |
| June 24 | 66.9°F | June 19 | 63.7°F |
| June 23 | 66.7°F | June 18 | 62.8°F |
| June 22 | 65.7°F | June 17 | 62.8°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
June
June
| Rennes |
Best time for vacation in Rennes
Rennes on a weather map
Places in France:
Name
°F
24 Hours Forecast
Rennes
Local time: 14:03
June 26, friday
1500
93°F
SW
3 mph
3 mph
1800
93°F
SW
5 mph
5 mph
2100
73°F
SE
12 mph
12 mph
June 27, saturday
0000
63°F
S
8 mph
8 mph
0300
63°F
S
6 mph
6 mph
0600
61°F
SW
3 mph
3 mph
0900
73°F
SE
4 mph
4 mph
1200
90°F
E
3 mph
3 mph
