Average sea water temperature in September:
+65.7°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:
2026
2025
2024
The average sea water temperature in September of 2026 was 70.0°F. The highest and lowest sea temperatures during the month were 74.1°F and 64.2°F.
sea water
temperature
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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 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 Winterthur
Winterthur on a weather map
Places in Switzerland:
Name
°F
24 Hours Forecast
Winterthur
Local time: 03:09
October 15, thursday
0600
46°F
NW
1 mph
1 mph
0900
50°F
NW
0 mph
0 mph
1200
63°F
S
1 mph
1 mph
1500
70°F
SE
2 mph
2 mph
1800
59°F
SW
2 mph
2 mph
2100
52°F
NW
2 mph
2 mph
October 16, friday
0000
50°F
NW
1 mph
1 mph
0300
48°F
N
2 mph
2 mph
