Average sea water temperature in September:
+65.4°F
| Minimum sea water temperature in September: | 75.0°F |
| Maximum sea water temperature in September: | 32.0°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 67.6°F. The highest and lowest sea temperatures during the month were 71.1°F and 63.5°F.
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| Winterthur |
monthly
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| Winterthur |
current
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| Winterthur |
14 days
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| Winterthur |
Monthly sea water temperature in Winterthur, °F
Which Switzerland resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Montreux | 68.5°F | 68.9°F |
| Gstaad | 68.5°F | 68.9°F |
| Verbier | 68.5°F | 68.9°F |
| Vevey | 68.4°F | 68.9°F |
| Lausanne | 68.1°F | 68.7°F |
| Lake Geneva | 68.0°F | 68.4°F |
| Zurich | 67.6°F | 68.7°F |
| Winterthur | 67.6°F | 68.7°F |
| Geneva | 66.9°F | 67.2°F |
| St Gallen | 66.8°F | 67.8°F |
Best time for vacation in Winterthur
Winterthur on a weather map
Places in Switzerland:
Name
°F
24 Hours Forecast
Winterthur
Local time: 20:14
July 21, tuesday
2100
59°F
W
6 mph
6 mph
July 22, wednesday
0000
57°F
SW
2 mph
2 mph
0300
50°F
W
1 mph
1 mph
0600
46°F
W
1 mph
1 mph
0900
63°F
SW
2 mph
2 mph
1200
73°F
SW
3 mph
3 mph
1500
79°F
S
2 mph
2 mph
1800
75°F
N
3 mph
3 mph
