Average sea water temperature in September:
+64.7°F
| Minimum sea water temperature in September: | 75.2°F |
| Maximum sea water temperature in September: | 32.0°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 70.3°F. The highest and lowest sea temperatures during the month were 75.2°F and 66.7°F.
Monthly sea water temperature in Geneva, °F
Which Switzerland resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Vevey | 71.2°F | 68.4°F |
| Gstaad | 71.1°F | 68.5°F |
| Verbier | 71.1°F | 68.5°F |
| Montreux | 71.1°F | 68.5°F |
| Lausanne | 70.9°F | 68.1°F |
| Lake Geneva | 70.8°F | 68.0°F |
| Geneva | 70.3°F | 66.9°F |
| Winterthur | 70.0°F | 67.6°F |
| Zurich | 70.0°F | 67.6°F |
| St Gallen | 69.8°F | 66.8°F |
Best time for vacation in Geneva
Geneva on a weather map
Places in Switzerland:
Name
°F
24 Hours Forecast
Geneva
Local time: 01:50
October 15, thursday
0300
52°F
N
2 mph
2 mph
0600
50°F
NW
1 mph
1 mph
0900
54°F
NW
1 mph
1 mph
1200
64°F
S
1 mph
1 mph
1500
72°F
SE
1 mph
1 mph
1800
64°F
SW
3 mph
3 mph
2100
55°F
NW
2 mph
2 mph
October 16, friday
0000
52°F
N
3 mph
3 mph
