Measurements:
°C
°F
CURRENT WEATHER
22:20
Winterthur
70°F
NW 7 mph
Feels like: 70°F
Precip: 18%
World Resorts Switzerland Winterthur Weather

7 Day Weather Forecast

09.08
tue
DAY
80°F
NE 7 mph
precip
4%
NIGHT
66°F
NE 3 mph
precip
65%
09.09
wed
DAY
52°F
NE 1 mph
precip
44%
NIGHT
54°F
SW 2 mph
precip
39%
09.10
thu
DAY
50°F
SW 6 mph
precip
28%
NIGHT
54°F
NW 2 mph
precip
20%
09.11
fri
DAY
66°F
S 2 mph
precip
13%
NIGHT
56°F
SW 2 mph
precip
14%
09.12
sat
DAY
54°F
SW 2 mph
precip
31%
NIGHT
58°F
NW 2 mph
precip
7%
09.13
sun
DAY
68°F
E 3 mph
precip
4%
NIGHT
64°F
E 3 mph
precip
30%
09.14
mon
DAY
66°F
SW 4 mph
precip
4%
NIGHT
60°F
W 3 mph
precip
15%

Winterthur Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Winterthur was 19.8°F. The maximum and minimum values were 17.5°F and 21.7°F respectively.

Winterthur on the Weather Map

Best Time to Visit Winterthur
The most sunny months:
August 15 days
July 13 days
April 12 days
The most warm months:
July 79.2 °F
August 79.0 °F
June 76.8 °F
Warmest sea temperature:
August 72.6 °F
July 71.9 °F
September 67.1 °F
The most cold months:
January 36.5 °F
December 38.4 °F
February 41.1 °F
The most rainy months:
May 7 days
June 6 days
July 6 days
The most windy months:
March 5 mph
May 5 mph
April 5 mph
more details