Average sea water temperature in September:
+64.9°F
| Minimum sea water temperature in September: | 68.5°F |
| Maximum sea water temperature in September: | 61.9°F |
Daily 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.
Monthly sea water temperature in Rennes, °F
Which France resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Portivecju | 82.0°F | 76.3°F |
| Bastia | 81.7°F | 76.0°F |
| Aiacciu | 81.3°F | 75.9°F |
| Bunifaziu | 81.2°F | 75.7°F |
| Corsica | 80.9°F | 75.6°F |
| Calvi | 80.8°F | 75.8°F |
| Saint Jean Cap Ferrat | 80.7°F | 75.5°F |
| Roquebrune Cap Martin | 80.6°F | 75.5°F |
| Propriano | 80.6°F | 75.3°F |
| Menton | 80.5°F | 75.4°F |
| Nice | 80.4°F | 75.3°F |
| Antibes | 80.3°F | 75.0°F |
| Juan les Pins | 80.3°F | 75.0°F |
| Saint Laurent du Var | 80.2°F | 75.1°F |
| Golfe Juan | 80.2°F | 74.9°F |
| Cagnes sur Mer | 80.2°F | 75.0°F |
| Cannes | 80.2°F | 74.9°F |
| Mandelieu la Napoule | 80.1°F | 74.8°F |
| Theoule Sur Mer | 80.1°F | 74.8°F |
| Frejus | 79.2°F | 74.3°F |
Best time for vacation in Rennes
Rennes on a weather map
Places in France:
Name
°F
24 Hours Forecast
Rennes
Local time: 03:34
September 15, tuesday
0600
63°F
E
3 mph
3 mph
0900
64°F
E
4 mph
4 mph
1200
77°F
SE
8 mph
8 mph
1500
81°F
SE
11 mph
11 mph
1800
68°F
S
18 mph
18 mph
2100
59°F
SE
12 mph
12 mph
September 16, wednesday
0000
54°F
SE
8 mph
8 mph
0300
54°F
SE
7 mph
7 mph
