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Monthly climate in Vionnaz, Valais, Switzerland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Vionnaz features a ice cap climate ET).Temperatures typically range between -6 °C (22 °F) and 15 °C (59 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 30 °C (85 °F).The average annual precipitation amounts to about 1882 mm (74.1 inches) and receives 180 rainy days on the 1 mm (0.04 inches) threshold annually.Vionnaz enjoys an average of 3648 hours of sunshine throughout the year, and daylight varies from 8 hours 40 minutes to 15 hours 41 minutes per day.

Monthly average temperatures in Vionnaz, Valais, Switzerland §

The warmest months in Vionnaz are June, July and August, with daily mean temperatures ranging from 13 to 15 °C (56 - 59 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -2 °C (22 - 29 °F) throughout the day. On average each year, Vionnaz experiences 6 days above 25 °C (77.0 °F) and 158 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Vionnaz, Valais, Switzerland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 8°C
(48°F)		 14°C
(57°F)		 16°C
(62°F)		 20°C
(68°F)		 26°C
(79°F)		 30°C
(85°F)		 28°C
(83°F)		 27°C
(81°F)		 23°C
(74°F)		 20°C
(68°F)		 17°C
(63°F)		 9°C
(48°F)
Mean maximum 5°C
(41°F)		 11°C
(51°F)		 13°C
(56°F)		 17°C
(63°F)		 21°C
(70°F)		 23°C
(74°F)		 26°C
(79°F)		 27°C
(80°F)		 22°C
(72°F)		 18°C
(64°F)		 13°C
(56°F)		 7°C
(44°F)
Average high -1°C
(31°F)		 3°C
(38°F)		 6°C
(42°F)		 10°C
(51°F)		 13°C
(56°F)		 19°C
(66°F)		 20°C
(68°F)		 20°C
(68°F)		 16°C
(61°F)		 12°C
(54°F)		 5°C
(42°F)		 -1°C
(31°F)
Daily mean -6°C
(22°F)		 -2°C
(29°F)		 1°C
(34°F)		 5°C
(41°F)		 8°C
(47°F)		 13°C
(56°F)		 15°C
(59°F)		 14°C
(58°F)		 11°C
(52°F)		 7°C
(44°F)		 1°C
(33°F)		 -4°C
(24°F)
Average low -10°C
(14°F)		 -7°C
(21°F)		 -4°C
(25°F)		 -1°C
(30°F)		 3°C
(38°F)		 8°C
(46°F)		 9°C
(49°F)		 9°C
(48°F)		 6°C
(43°F)		 2°C
(36°F)		 -4°C
(26°F)		 -8°C
(17°F)
Mean minimum -19°C
(-1°F)		 -14°C
(6°F)		 -14°C
(7°F)		 -10°C
(14°F)		 -4°C
(25°F)		 2°C
(36°F)		 5°C
(40°F)		 3°C
(39°F)		 -0°C
(32°F)		 -4°C
(26°F)		 -12°C
(11°F)		 -18°C
(-0°F)
Minimum -24°C
(-11°F)		 -20°C
(-3°F)		 -22°C
(-8°F)		 -16°C
(4°F)		 -11°C
(13°F)		 -1°C
(30°F)		 2°C
(36°F)		 3°C
(37°F)		 -5°C
(24°F)		 -5°C
(23°F)		 -17°C
(1°F)		 -25°C
(-13°F)

Compare climate in Vionnaz with other places

Compare temperature, precipitation, sunshine, UV index in Vionnaz, Valais, Switzerland with other places around the world.

Monthly average precipitation in Vionnaz, Valais, Switzerland §

Vionnaz usually has the most precipitation in May, June and December, with an average of 19 rainy days and 217 mm (8.5 inches) of precipitation per month.The driest months in Vionnaz are February, April and November. On average, 104 mm (4.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Vionnaz, Valais, Switzerland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 138 (5.4) 115 (4.5) 142 (5.6) 90 (3.5) 211 (8.3) 211 (8.3) 206 (8.1) 189 (7.4) 120 (4.7) 127 (5.0) 105 (4.1) 228 (9.0)
Average precipitation days (≥ 1 mm) 10 11 15 13 20 20 17 16 15 13 12 18

Monthly sunshine hours in Vionnaz, Valais, Switzerland §

The sunniest months in Vionnaz are June, July and August, when the sun shines an average of 13 hours 2 minutes a day.Least sunny months in Vionnaz: January, November and December receive an average of 6 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Vionnaz, Valais, Switzerland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 167 231 297 354 354 394 417 387 330 288 228 196
Mean daily daylight hours 9h 4m 10h 20m 11h 56m 13h 34m 14h 58m 15h 41m 15h 18m 14h 4m 12h 29m 10h 52m 9h 25m 8h 40m

Solar UV radiation in Vionnaz, Valais, Switzerland §

Vionnaz experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Vionnaz UV Index data.

Average daily maximum UV levels by month for Vionnaz, Valais, Switzerland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 4 6 7 8 10 9 9 7 5 3 2