Climate averages 1991–2020
Winterthur weather
in August.
A warm, wet month: one of the warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Winterthur: daytime highs average 23.1°C and nights cool to about 14.6°C. By daytime temperature it is one of the warmest months of the year.
Expect about 107 mm of rain on roughly 13 days, which makes August a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 16 min on an average August day.
The nearest other city in this atlas is Zürich (20 km away). In August its highs average 23.2°C, about as warm as Winterthur, with 147 mm of rain.
Among the 8 cities listed in Switzerland, Winterthur ranks 4th of 8 for the warmest August highs and 2nd of 8 for the driest August (rainfall, lowest first). The mean August high of those 8 cities is 22.9°C; Winterthur is 0.1°C warmer than that mean.
From August to September, average highs fall by 4.3°C to 18.7°C, and monthly rainfall falls from 107 mm to 91 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Winterthur climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.5°C-1.9°C | -1.9°C | 79 | 12.3 | 8.99 h |
| February | 5.8°C-2.0°C | -2.0°C | 69 | 11.3 | 10.210 h |
| March | 9.9°C0.8°C | 0.8°C | 82 | 13.2 | 11.912 h |
| April | 13.8°C4.0°C | 4.0°C | 85 | 12.5 | 13.614 h |
| May | 17.6°C8.5°C | 8.5°C | 119 | 15.2 | 15.115 h |
| June | 21.2°C12.3°C | 12.3°C | 113 | 14.8 | 15.916 h |
| July | 23.1°C14.4°C | 14.4°C | 106 | 13.7 | 15.616 h |
| August, selected | 23.1°C14.6°C | 14.6°C | 107 | 13.0 | 14.314 h |
| September | 18.7°C10.8°C | 10.8°C | 91 | 11.1 | 12.613 h |
| October | 14.4°C6.9°C | 6.9°C | 83 | 11.6 | 10.911 h |
| November | 8.6°C2.2°C | 2.2°C | 87 | 12.1 | 9.49 h |
| December | 4.9°C-0.9°C | -0.9°C | 93 | 13.7 | 8.59 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Zürich in AugustSwitzerland · 20 kmHigh 23.2°C · Low 15.0°C · 147 mm rain
- Konstanz in AugustGermany · 38 kmHigh 23.3°C · Low 16.8°C · 120 mm rain
- Sankt Gallen in AugustSwitzerland · 50 kmHigh 21.2°C · Low 12.7°C · 175 mm rain
- Luzern in AugustSwitzerland · 60 kmHigh 23.0°C · Low 15.2°C · 211 mm rain
- Villingen-Schwenningen in AugustGermany · 64 kmHigh 21.2°C · Low 12.7°C · 124 mm rain
- Vaduz in AugustLiechtenstein · 72 kmHigh 23.1°C · Low 13.9°C · 219 mm rain
- Freiburg in AugustGermany · 85 kmHigh 24.4°C · Low 15.6°C · 81 mm rain
- Basel in AugustSwitzerland · 87 kmHigh 24.5°C · Low 14.9°C · 125 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Winterthur) is explained once on the Winterthur year overview and on the Sources, method and limits page.