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 71.0°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 | 72.4°F | 68.4°F |
| Gstaad | 72.3°F | 68.5°F |
| Verbier | 72.3°F | 68.5°F |
| Montreux | 72.3°F | 68.5°F |
| Lausanne | 71.9°F | 68.1°F |
| Lake Geneva | 71.8°F | 68.0°F |
| Winterthur | 71.2°F | 67.6°F |
| Zurich | 71.1°F | 67.6°F |
| Geneva | 71.0°F | 66.9°F |
| St Gallen | 70.8°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: 08:47
September 23, wednesday
0900
50°F
SW
2 mph
2 mph
1200
61°F
S
2 mph
2 mph
1500
68°F
SW
1 mph
1 mph
1800
68°F
SW
3 mph
3 mph
2100
63°F
W
1 mph
1 mph
September 24, thursday
0000
59°F
W
2 mph
2 mph
0300
55°F
NW
1 mph
1 mph
0600
54°F
N
2 mph
2 mph
