Current Sea Water Temperature:
+42.0°F
| Maximum Sea Water Temperature in January: | 44.4°F |
| Minimum Sea Water Temperature in January: | 30.0°F |
| Average water temperature in January: | 40.6°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| January 10 | 42.0°F | January 05 | 43.2°F |
| January 09 | 41.8°F | January 04 | 43.4°F |
| January 08 | 42.0°F | January 03 | 43.6°F |
| January 07 | 42.2°F | January 02 | 44.0°F |
| January 06 | 42.4°F | January 01 | 44.2°F |
When is the Warmest Sea for Winterthur?
According to our data for the last three years for Winterthur the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Winterthur was 75.4°F. The maximum and minimum values were 72.2°F and 79.2°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Winterthur was 76.6°F. The maximum and minimum values were 73.8°F and 81.6°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Winterthur was 69.5°F. The maximum and minimum values were 65.0°F and 73.4°F respectively.
Switzerland Resorts:
NAME
F°
| Basle |  |
+26 |
| Berne |  |
+18 |
| Geneva | |
+18 |
| Gstaad | |
0 |
| Lake Geneva | |
+22 |
| Lausanne | |
+22 |
| Lucerne | |
+24 |
| Lugano |  |
+24 |
| Montreux | |
+12 |
| St Gallen | |
+22 |
| Verbier | |
-2 |
| Vevey | |
+12 |
| Winterthur | |
+22 |
| Zermatt | |
-6 |
| Zurich | |
+24 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Winterthur
Local time: 08:06
11 jan, sunday
| 0900 |  |
22°F | N 1 mph |
| 1200 | |
30°F | NE 2 mph |
| 1500 | |
30°F | E 1 mph |
| 1800 |  |
20°F | NW 2 mph |
| 2100 |  |
16°F | NW 3 mph |
12 jan, monday
| 0000 | |
16°F | NW 2 mph |
| 0300 | |
22°F | N 2 mph |
| 0600 |  |
24°F | NE 2 mph |