Climate and monthly weather forecast
Winterthur, Switzerland

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The climate of Winterthur

Geographically nestled in Switzerland's northeastern region, Winterthur belongs to the Köppen climate classification of Cfb. This classification indicates a marine west coast climate with a warm summer. Throughout the calendar year, Winterthur experiences a climate defined by robust seasonality, with varied high and low temperatures, humidity levels, and rainfall patterns.

Throughout the year, the temperature range in Winterthur runs the gamut from -3.3°C (26.1°F) to 24.6°C (76.3°F). Highs begin from 3.3°C (37.9°F) in January, gradually warming up until they peak at 24.6°C (76.3°F) in July. From this point, the temperatures drop, reaching back to the January levels by December. The lowest temperatures follow a similar pattern. The year starts and ends with negative temperatures, with the lowest at -3.3°C (26.1°F) in January and -1.8°C (28.8°F) in December. The warmest month for low temperature typically occurs in July and August, both averaging 12.1°C (53.8°F).

Relative humidity in Winterthur maintains relative consistency along the year, with only minor fluctuations between a high of 88% in January and a low of 76% in July. Rainfall totals seesaw throughout the year. The start of the year in January witnesses approximately 65mm (2.56") of rainfall, increasing to a high of 82mm (3.23") by December. Reflecting the winter nature of the city, snowfall predominates in January with 182mm (7.17"), reaching its maximum in December at 168mm (6.61").

The best time to visit Winterthur

Considering the fluctuating weather patterns in Winterthur, the optimal time for a visit would undoubtedly be the summer season, specifically between June and August. During this period, the city sways in the warmth of high temperatures ranging from 22.7°C (72.9°F) to 24.4°C (75.9°F), complemented by mildly comfortable low temperatures ranging from 10.1°C (50.2°F) to 12.1°C (53.8°F). Additionally, these months offer munificent sunlight, with daylight hours extending from 14.2 hours to 15.9 hours and sunshine duration spanning from 9.7 hours to 10.2 hours.

The worst time to visit Winterthur

At the other end of the spectrum, the least attractive period for travelers to Winterthur would be during the winter months, from December to February. Here, temperatures can plunge to as low as -3.3°C (26.1°F), with an average high reaching just 4.4°C (39.9°F) in February. The city experiences significantly less sunshine in these months, the duration reducing to only between 4.6 hours to 4.5 hours a day.

Spring weather in Winterthur

The spring months in Winterthur, stretching from March to May, display a gradual rise in temperatures. March brings winter's end with a high of 9.6°C (49.3°F); by May, high temperatures reach a moderately warm 18.4°C (65.1°F). At night, low temperatures rise from zero in March to 6.1°C (43°F) in May. This period witnesses relatively balanced rainfall, alternating between 56mm (2.2") and 78mm (3.07") across these months.

Summer weather in Winterthur

Summer in Winterthur, stretching between June and August, is characterized by pleasantly warm temperatures. High temperatures vary from 22.7°C (72.9°F) to 24.6°C (76.3°F), while lows range between a comfortable 10.1°C (50.2°F) to 12.1°C (53.8°F). Summer tends to be the season with the lowest humidity levels, with average monthly relative humidity falling to 76%.

Autumn weather in Winterthur

Autumn is a transitional season in Winterthur, marking the progression from the warm summer months to the colder winter ones. High temperatures dwindle noticeably from 19.6°C (67.3°F) in September to 8.7°C (47.7°F) in November. Correspondingly, low temperatures follow suit, dropping from 8.1°C (46.6°F) to 1.2°C (34.2°F) in the same period.

Winter weather in Winterthur

Winter in Winterthur is defined by a palpable chill. High temperatures between December and February remain well below the double digits, fluctuating between 3.3°C (37.9°F) and 4.4°C (39.9°F). Low temperatures dip into negatives, with the winters starting and ending with -3.3°C (26.1°F) and -1.8°C (28.8°F), respectively. Snowfall is a common occurrence, reaching up to 182mm (7.17") in January, and is accompanied by relatively high humidity levels.

Weather in January

As we usher in the new year, Winterthur, Switzerland is greeted with typical winter weather peppered with snowfall. Relative humidity stands at 88%, and the city can expect 65mm (2.56") of precipitation over approximately 11 days. Weather in January »

Weather in February

February still clings to the lingering cold temperatures of January in Winterthur. However, there's a slight upshift of the mercury, indicating temperatures ranging from -3.1°C (26.4°F) to 4.4°C (39.9°F). Snowfall continues to be a dominant aspect, but the daylight period gradually extends compared to the previous month. Weather in February »

Weather in March

March brings a refreshing transition in Winterthur as snowfall gradually lessens, paving way for spring. Temperatures lean towards milder readings, spanning 0°C (32°F) to 9.6°C (49.3°F). As winter thaws out, more hours of daylight become available, changing the city's mood from winter zen to spring rejuvenation. Weather in March »

Weather in April

April in Winterthur evokes a true sense of spring, with temperatures favoring a mild climate. Temperatures tend to lie between 3.3°C (37.9°F) and 15.8°C (60.4°F), providing a balance between cool and moderately warm conditions. Weather in April »

Weather in May

May marks a shift towards warmer weather in Winterthur. The city experiences an upward trend in temperatures, hovering between 6.1°C (43°F) and 18.4°C (65.1°F). An evident increase in rain characterizes this month, signaling the onset of early summer showers. Weather in May »

Weather in June

June typically signifies the start of summer in Winterthur, transforming the city into a lively hub. Temperatures usually oscillate from 10.1°C (50.2°F) to 22.7°C (72.9°F). Longer days, coupled with more sunshine hours, make it an ideal time for hiking, picnics, and sightseeing. Weather in June »

Weather in July

July, being the warmest month in Winterthur, tends to display temperatures from 12.1°C (53.8°F) to 24.6°C (76.3°F). The days are filled with abundant sunlight, illuminating the city's architectural splendor in a golden hue. Despite the occasional rain showers, the weather remains pleasant for outdoor activities, marking July as the heart of the summer season. The highest temperatures in Winterthur, Switzerland, are recorded in July, with averages reaching a high of 24.6°C (76.3°F) and a low of 12.1°C (53.8°F). Weather in July »

Weather in August

August in Winterthur almost mirrors July in terms of weather, maintaining warm conditions. There's a minor dip toward slightly cooler extremes, with temperatures falling between 12.1°C (53.8°F) to 24.4°C (75.9°F). The city continues its summer vibrance, making it an attractive time for tourists, alongside various outdoor cultural events and al fresco dining. August records an average high-temperature of a still moderately hot 24.4°C (75.9°F), indicating a minor variation from the preceding month. Weather in August »

Weather in September

September signals the arrival of autumn in Winterthur. Though daytime temperatures can get up to 19.6°C (67.3°F), a shift towards cooler temperatures can be observed, ranging from 8.1°C (46.6°F) to 19.6°C (67.3°F). Early autumn hues slowly claim the city's landscape. Weather in September »

Weather in October

In October, temperatures significantly cool in Winterthur, with readings from 4.6°C (40.3°F) to 14.4°C (57.9°F). Avenues dotted with autumn-colored trees give the city an entirely new ambiance. The transforming landscape complements the city's age-old architecture while cooler temperatures bring with them a slower-paced lifestyle. With the onset of October, Winterthur experiences a modest temperature adjustment, with the average high-temperature receding from an enjoyable 19.6°C (67.3°F) in September to a still refreshing 14.4°C (57.9°F). Weather in October »

Weather in November

As we proceed to November, Winterthur experiences an obvious turn towards colder conditions. While temperatures fluctuate between 1.2°C (34.2°F) and 8.7°C (47.7°F), snowfall is yet to greet the city once again. Despite the dipping temperatures, Winterthur remains briskly beautiful, setting the mood for the upcoming winter. Winterthur's average high-temperature decreases in November, falling from a mild 14.4°C (57.9°F) in October to a chilly 8.7°C (47.7°F). Weather in November »

Weather in December

December in Winterthur invokes a winter wonderland image, as temperatures plunge between -1.8°C (28.8°F) and 4.2°C (39.6°F). Highest rainfall in the year is noted, standing at 82mm (3.23"). Snowfall graces the city once more, bringing with it the charm of winter holidays. Weather in December »
Updated: Feb 3, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the coldest time of year in Winterthur?

Winterthur reaches its average lowest temperatures in January, measuring 3.3°C (37.9°F) at the peak and -3.3°C (26.1°F) at the lowest.

What is the most humid month in Winterthur?

The most humid month in Winterthur, Switzerland, is January, with an average relative humidity of 88%.

How much does it rain in Winterthur?

Throughout the year, there are 155.4 rainfall days, and 704mm (27.72") of precipitation is accumulated.

When does it snow in Winterthur?

January through May, October through December are months with snowfall.

When does it snow the most in Winterthur?

The month with the most snowfall is January, when snow falls for 11.3 days and typically aggregates up to 182mm (7.17") of snow.

How much does it snow in Winterthur?

In Winterthur, during the entire year, snow falls for 42.6 days and aggregates up to 729mm (28.7") of snow.

When is the lowest UV index in Winterthur?

The months with the lowest UV index in Winterthur, Switzerland, are January, February, October through December, with an average maximum UV index of 2.

What is the month with the least sunshine in Winterthur?

With an average of 4.5h of sunshine, February has the least sunshine of the year in Winterthur, Switzerland.

What is the least humid month in Winterthur?

The months with the lowest humidity in Winterthur, Switzerland, are April and July, with an average relative humidity of 76%.

When it does not snow in Winterthur?

June through September are months without snowfall in Winterthur, Switzerland.

When are the longest days in Winterthur?

The month with the longest days in Winterthur, Switzerland, is June, with an average of 15h and 54min of daylight.

When is the highest UV index in Winterthur?

June is the month with the highest UV index, with an average maximum UV index of 6.

What is the hottest time of year in Winterthur?

July, with an average high of 24.6°C (76.3°F) and a low of 12.1°C (53.8°F), signifies the warmest month of the year in Winterthur.

What are the months with the most sunshine in Winterthur?

The months with the most sunshine are July and August, with an average of 10.2h of sunshine.

What is the driest month in Winterthur?

The month with the least rainfall is September, when the rain falls for 9.9 days and typically collects 29mm (1.14") of precipitation.

When is Daylight Saving Time (DST) in Winterthur?

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Winterthur, Switzerland, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.

What is the rainiest month in Winterthur?

December is the month with the most rainfall. Rain falls for 13.9 days and accumulates 82mm (3.23") of precipitation.

What is the month with the shortest days in Winterthur?

December has the shortest days of the year in Winterthur, Switzerland, with an average of 8h and 30min of daylight.

Average temperature
Winterthur, Switzerland

Average temperature - Winterthur, Switzerland

The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (3.3°C).

The months with the highest average low temperature are July and August (12.1°C).
The coldest month (with the lowest average low temperature) is January (-3.3°C).

Average pressure
Winterthur, Switzerland

Average pressure - Winterthur, Switzerland

The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).

Average wind speed
Winterthur, Switzerland

Average wind speed - Winterthur, Switzerland

The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).

Average humidity
Winterthur, Switzerland

Average humidity - Winterthur, Switzerland

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall
Winterthur, Switzerland

Average rainfall - Winterthur, Switzerland

The wettest month (with the highest rainfall) is December (82mm).
The driest month (with the least rainfall) is September (29mm).

Average rainfall days
Winterthur, Switzerland

Average rainfall days - Winterthur, Switzerland

The month with the highest number of rainy days is May (18.4 days).
The months with the least rainy days are September and November (9.9 days).

Average snowfall
Winterthur, Switzerland

Average snowfall - Winterthur, Switzerland

The month with the highest snowfall is January (182mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days
Winterthur, Switzerland

Average snowfall days - Winterthur, Switzerland

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Winterthur, Switzerland

Average daylight / Average sunshine - Winterthur, Switzerland

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days
Winterthur, Switzerland

Average sunshine days - Winterthur, Switzerland

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is February (11.1 days).

Average UV index
Winterthur, Switzerland

Average UV index - Winterthur, Switzerland

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover
Winterthur, Switzerland

Average cloud cover - Winterthur, Switzerland

The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility
Winterthur, Switzerland

Average visibility - Winterthur, Switzerland

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January and February (7km).

Winterthur, Switzerland

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