Winterthur, Zurich Weather by Month and Climate Averages

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.

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. The sun is out about 30% of daylight hours. 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. The sun is out about 35% of daylight hours. 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. The sun is out about 41% of daylight hours. 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. The sun is out about 40% of daylight hours. 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. The sun is out about 35% of daylight hours. 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. The sun is out about 40% of daylight hours. 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. The sun is out about 46% of daylight hours. 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. The sun is out about 44% of daylight hours. 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. The sun is out about 42% of daylight hours. 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. The sun is out about 29% of daylight hours. 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. The sun is out about 29% of daylight hours. 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. The sun is out about 24% of daylight hours. 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 sunshine about 46% of daylight hours. December is the cloudiest, at 24%. Over the year the sun shines about 36% of daylight hours. Winterthur is sunnier than 97% of Germany.

Humidity peaks in December at 88% and is lowest in April at 66%.

Winterthur has about 7 days a year above 32°C. Winterthur is hotter than 96% 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

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 on record brought 83 mm of rain, 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.

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?

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 sunshine about 46% of daylight hours. 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.