Hyperlocal rainfall totals + real-time NOAA forecasts
Accurate weather without the clutter
Winterthur, Zurich Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Winterthur, Zurich?
Winterthur, Zurich gets 800 mm of precipitation a year over about 156 rainy days. July is the warmest month (average high 26°C) and January the coldest (average low -2°C).
Oceanic climate
Winterthur, Zurich has warm summers and cold winters. Daytime highs range from about 4°C in January to 26°C in July. July is usually the wettest month. The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -2° | 4° |
| Spring | Mar–May | 4° | 16° |
| Summer | Jun–Aug | 12° | 25° |
| Autumn | Sep–Nov | 5° | 14° |
How much rain does Winterthur get?
Winterthur gets 800 mm of precipitation in an average year, spread over about 156 days with measurable rain. That is fewer rainy days than 82% of Germany.
July is the wettest month, with 108 mm. March is the driest, with 44 mm. December has the most rainy days, about 15.
The longest dry spell in the last five years lasted 25 days, to June 17, 2023.
From October 2025 to September 2026 Winterthur got 569 mm of rain, against a normal of 800 mm for those months. February 2026 had the most, with 87 mm.
Winterthur weather by month
Winterthur weather in January
In January, Winterthur averages a high of 4°C and a low of -2°C. It gets 56 mm of precipitation over about 14 rainy days. Estimated sunshine is 30% of daylight hours, derived from ERA5 cloud cover. The January record high is 17°C (2023) and the record low is -16°C (2017).
Winterthur weather in February
In February, Winterthur averages a high of 6°C and a low of -2°C. It gets 49 mm of precipitation over about 12 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The February record high is 18°C (2021) and the record low is -17°C (2012).
Winterthur weather in March
In March, Winterthur averages a high of 11°C and a low of 0°C. It gets 44 mm of precipitation over about 13 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The March record high is 23°C (2021) and the record low is -17°C (2005).
Winterthur weather in April
In April, Winterthur averages a high of 17°C and a low of 4°C. It gets 54 mm of precipitation over about 11 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The April record high is 30°C (2012) and the record low is -5°C (2017).
Winterthur weather in May
In May, Winterthur averages a high of 20°C and a low of 8°C. It gets 84 mm of precipitation over about 15 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The May record high is 32°C (2026) and the record low is -1°C (2019). May is one of the most comfortable months to visit.
Winterthur weather in June
In June, Winterthur averages a high of 24°C and a low of 12°C. It gets 81 mm of precipitation over about 14 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The June record high is 38°C (2026) and the record low is 2°C (2005). June is one of the most comfortable months to visit.
Winterthur weather in July
In July, Winterthur averages a high of 26°C and a low of 13°C. It gets 108 mm of precipitation over about 14 rainy days. Estimated sunshine is 46% of daylight hours, derived from ERA5 cloud cover. The July record high is 37°C (2026) and the record low is 5°C (2011).
Winterthur weather in August
In August, Winterthur averages a high of 24°C and a low of 12°C. It gets 90 mm of precipitation over about 15 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The August record high is 37°C (2022) and the record low is 4°C (2005). August is one of the most comfortable months to visit.
Winterthur weather in September
In September, Winterthur averages a high of 21°C and a low of 9°C. It gets 56 mm of precipitation over about 10 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The September record high is 32°C (2024) and the record low is 2°C (2007). September is one of the most comfortable months to visit.
Winterthur weather in October
In October, Winterthur averages a high of 15°C and a low of 6°C. It gets 59 mm of precipitation over about 12 rainy days. Estimated sunshine is 29% of daylight hours, derived from ERA5 cloud cover. The October record high is 27°C (2023) and the record low is -4°C (2010).
Winterthur weather in November
In November, Winterthur averages a high of 8°C and a low of 1°C. It gets 51 mm of precipitation over about 12 rainy days. Estimated sunshine is 29% of daylight hours, derived from ERA5 cloud cover. The November record high is 21°C (2020) and the record low is -13°C (2005).
Winterthur weather in December
In December, Winterthur averages a high of 4°C and a low of -2°C. It gets 69 mm of precipitation over about 15 rainy days. Estimated sunshine is 24% of daylight hours, derived from ERA5 cloud cover. The December record high is 15°C (2022) and the record low is -19°C (2009).
Sunshine, humidity and wind in Winterthur
July is the sunniest month in Winterthur, with estimated sunshine of 46% of daylight hours from ERA5 cloud cover. December is the cloudiest, at 24%. The annual cloud-cover estimate is 36% of daylight hours; it is not a measurement of sunshine duration. Winterthur is sunnier than 98% of Germany.
Humidity peaks in December at 88% and is lowest in April at 66%.
Winterthur has about 8 days a year above 32°C. Winterthur is hotter than 97% of Germany.
First and last freeze in Winterthur
The first fall freeze in Winterthur typically comes around October 28, and the last spring freeze around April 18. That leaves a frost-free growing season of about 193 days.
Winterthur weather records
These records cover SINGEN during 2004–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Winterthur station is 38°C, on June 27, 2026. The coldest is -19°C, on December 20, 2009.
The wettest day in the available station history brought 83 mm of precipitation, on July 28, 2008.
The best time to visit Winterthur
The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 22°C.
Winter (December–February) is cold, with average highs around 4°C and lows near -2°C.
Spring (March–May) is mild, with average highs around 16°C and lows near 4°C.
Summer (June–August) is warm, with average highs around 25°C and lows near 12°C. It can feel humid.
Autumn (September–November) is mild, with average highs around 15°C and lows near 5°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -2° | 4° | 56 mm | 14 | 84% | 30% | 17° | -16° |
| February | -2° | 6° | 49 mm | 12 | 76% | 35% | 18° | -17° |
| March | 0° | 11° | 44 mm | 13 | 69% | 41% | 23° | -17° |
| April | 4° | 17° | 54 mm | 11 | 66% | 40% | 30° | -5° |
| May | 8° | 20° | 84 mm | 15 | 71% | 35% | 32° | -1° |
| June | 12° | 24° | 81 mm | 14 | 69% | 40% | 38° | 2° |
| July | 13° | 26° | 108 mm | 14 | 66% | 46% | 37° | 5° |
| August | 12° | 24° | 90 mm | 15 | 70% | 44% | 37° | 4° |
| September | 9° | 21° | 56 mm | 10 | 79% | 42% | 32° | 2° |
| October | 6° | 15° | 59 mm | 12 | 84% | 29% | 27° | -4° |
| November | 1° | 8° | 51 mm | 12 | 87% | 29% | 21° | -13° |
| December | -2° | 4° | 69 mm | 15 | 88% | 24% | 15° | -19° |
Station: SINGEN, 31 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 2004–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Winterthur climate questions
How much rain does Winterthur get?
Winterthur gets 800 mm of precipitation in an average year, over about 156 rainy days.
What is the wettest month in Winterthur?
July is the wettest month in Winterthur, with 108 mm. March is the driest, with 44 mm.
How many rainy days does Winterthur have a year?
Winterthur has about 156 days with measurable rain in an average year. December has the most, about 15.
What is the hottest month in Winterthur?
July is the warmest month in Winterthur, with an average high of 26°C.
What is the coldest month in Winterthur?
January is the coldest month in Winterthur, with an average low of -2°C.
What is the record high temperature in Winterthur?
Within the available 2004–2026 station history, the record high at the Winterthur station is 38°C, set on June 27, 2026. The record low is -19°C, on December 20, 2009.
What is the sunniest month in Winterthur?
July is the sunniest month in Winterthur, with estimated sunshine of 46% of daylight hours from ERA5 cloud cover. December is the cloudiest.
When is the first frost in Winterthur?
The first fall freeze in Winterthur typically comes around October 28. The last spring freeze is around April 18.
What is the best time to visit Winterthur?
The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 22°C.