Climate in Zurich

Average daytime and nighttime temperatures

All climatic diagrams on this site result from the collected data from three measuring weather stations in Zurich.
Weather stations at an altitude above 1500m have not been included.
All data correspond to the average monthly values of the last 20 years.

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Zurich is the coldest region in Switzerland with an average high temperature of only 12°C. The climate widely corresponds to Central European weather conditions. It is cold, wet and a few beautiful summer months are also happening during a year. It rarely gets really warm here. Due to the warmer temperatures the best time for traveling is from May to September. Winter athletes will find their favorite weather conditions from December to February.
Overview: Climate in Switzerland
Daylengths and sun positions in Switzerland
Compare climate with other regions or countries
Hours of sunshine per daySunshine hours per day in Zurich
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 8 hours per day, July is the sunniest month in greater region Zurich. In December the sun shines the shortest.
Rainy days per monthRainy days per month in Zurich
A rainy day is a day on which at least an amount of 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 14 rainy days, May offers the most number of rainy days, and in September the least.
Precipitation in mm/dayPrecipitation in Zurich
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 2.2 mm, the least rain falls in March. May, on the other hand, has the most rain.
Water temperatureWater temperatures in Zurich
Water temperature depends not only on solar radiation within the same region, but also on ocean currents. For example, depending on the season, cold or warm water masses are moved from other areas. The warmest temperatures in Zurich are in July, when the water is 19 °C.
Relative humidity in %Relative humidity in Zurich
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture of the physically possible is actually contained in the air. At high humidity, the person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% gives as pleasant. With only 72% humidity on average, it is quite dry in May. The highest value of 85% is experienced here in January.
Absolute humidity in g/m³Absolute humidity in Zurich
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy.
Humidex in °CHumidex in Zurich
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Climate charts for other greater regions in Switzerland

Map of Zurich

Most important cities in the greater region »Zurich«

Alone 2 cities with over 100,000 inhabitants are located here.

CityPopulationGeo position
Zürich415,36747° 22' 0"N8° 33' 0"E
Winterthur111,85147° 30' 0"N8° 43' 30"E
Uster23,27947° 20' 50"N8° 43' 15"E
Dietikon20,89347° 24' 6"N8° 24' 1"E
Dübendorf19,88247° 23' 50"N8° 37' 7"E
Oberwinterthur16,35647° 31' 1"N8° 46' 7"E
Kloten16,28947° 27' 5"N8° 35' 6"E
Stadt Winterthur16,18247° 29' 42"N8° 43' 10"E
Horgen15,97347° 15' 21"N8° 36' 1"E
Seen15,43447° 28' 35"N8° 46' 12"E
Adliswil15,23047° 18' 36"N8° 31' 29"E
Thalwil13,29647° 17' 30"N8° 33' 49"E
Wädenswil13,26947° 13' 37"N8° 40' 7"E
Bülach13,17247° 31' 19"N8° 32' 26"E
Wetzikon12,96947° 19' 35"N8° 47' 52"E
Schlieren12,69547° 23' 48"N8° 26' 51"E
Wülflingen (Kreis 6)12,59847° 30' 37"N8° 40' 60"E
Wallisellen11,70547° 24' 54"N8° 35' 48"E
Küsnacht11,52547° 19' 5"N8° 35' 2"E
Mattenbach (Kreis 7)11,04347° 29' 13"N8° 44' 49"E
Rüti9,57647° 15' 22"N8° 51' 20"E
Urdorf9,20547° 23' 6"N8° 25' 33"E
Affoltern am Albis8,92847° 16' 39"N8° 27' 5"E
Pfäffikon7,99447° 21' 52"N8° 47' 31"E
Hegnau7,96147° 23' 32"N8° 40' 12"E
Männedorf7,95147° 15' 25"N8° 41' 56"E
Regensdorf7,53147° 26' 3"N8° 28' 7"E
Richterswil7,10347° 12' 22"N8° 41' 49"E
Embrach7,08847° 30' 20"N8° 35' 39"E
Bassersdorf7,01047° 26' 36"N8° 37' 43"E

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants:, United Nations Statistics Division and own research.
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