Current sea water temperature:
+65.3°F
| Minimum sea water temperature in October: | 65.3°F |
| Maximum sea water temperature in October: | 57.4°F |
| Average sea water temperature in October: | 61.2°F |
| more information | |
14 days
forecast
forecast
| Rennes |
monthly
weather
weather
| Rennes |
Sea water temperature for the last 10 days:
| October 4 | 65.3°F | September 29 | 65.7°F |
| October 3 | 64.9°F | September 28 | 66.0°F |
| October 2 | 65.1°F | September 27 | 66.2°F |
| October 1 | 65.3°F | September 26 | 66.7°F |
| September 30 | 64.9°F | September 25 | 66.6°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 68.8°F. The highest and lowest sea temperatures during the month were 70.2°F and 67.3°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 67.1°F. The highest and lowest sea temperatures during the month were 68.5°F and 64.9°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 67.2°F. The highest and lowest sea temperatures during the month were 68.9°F and 64.9°F.
current
weather
weather
| Rennes |
weather in
October
October
| Rennes |
Best time for vacation in Rennes
Rennes on a weather map
Places in France:
Name
°F
24 Hours Forecast
Rennes
Local time: 05:58
October 05, monday
0600
55°F
SW
7 mph
7 mph
0900
55°F
SW
6 mph
6 mph
1200
70°F
SW
7 mph
7 mph
1500
77°F
SW
7 mph
7 mph
1800
77°F
SW
7 mph
7 mph
2100
61°F
S
9 mph
9 mph
October 06, tuesday
0000
59°F
SW
7 mph
7 mph
0300
57°F
SW
6 mph
6 mph
