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Monthly climate in Altdorf, Switzerland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Altdorf features a ice cap climate ET).Temperatures typically range between -4 °C (26 °F) and 15 °C (59 °F) through the year, but rarely can drop to -24 °C (-10 °F) or can rise to as high as 29 °C (85 °F).The average annual precipitation amounts to about 1991 mm (78.4 inches) and receives 196 rainy days on the 1 mm (0.04 inches) threshold annually.Altdorf enjoys an average of 3561 hours of sunshine throughout the year, and daylight varies from 8 hours 34 minutes to 15 hours 48 minutes per day.

Monthly average temperatures in Altdorf, Switzerland §

The warmest months in Altdorf are June, July and August, with daily mean temperatures ranging from 14 to 15 °C (57 - 59 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to -2 °C (26 - 30 °F) throughout the day. On average each year, Altdorf experiences 6 days above 25 °C (77.0 °F) and 136 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Altdorf, 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 9°C
(49°F)		 12°C
(54°F)		 16°C
(62°F)		 20°C
(68°F)		 25°C
(77°F)		 29°C
(85°F)		 29°C
(84°F)		 27°C
(80°F)		 23°C
(74°F)		 18°C
(65°F)		 17°C
(62°F)		 8°C
(47°F)
Mean maximum 5°C
(41°F)		 10°C
(50°F)		 13°C
(56°F)		 17°C
(63°F)		 21°C
(70°F)		 24°C
(75°F)		 26°C
(79°F)		 26°C
(80°F)		 22°C
(71°F)		 17°C
(63°F)		 12°C
(55°F)		 6°C
(44°F)
Average high -1°C
(31°F)		 2°C
(37°F)		 5°C
(42°F)		 10°C
(50°F)		 13°C
(56°F)		 19°C
(66°F)		 20°C
(67°F)		 19°C
(67°F)		 16°C
(61°F)		 11°C
(53°F)		 5°C
(41°F)		 0°C
(33°F)
Daily mean -4°C
(26°F)		 -2°C
(30°F)		 1°C
(34°F)		 5°C
(41°F)		 8°C
(48°F)		 14°C
(57°F)		 15°C
(59°F)		 15°C
(59°F)		 11°C
(52°F)		 7°C
(45°F)		 2°C
(35°F)		 -2°C
(29°F)
Average low -7°C
(20°F)		 -5°C
(23°F)		 -3°C
(26°F)		 -0°C
(32°F)		 4°C
(39°F)		 9°C
(48°F)		 10°C
(51°F)		 10°C
(51°F)		 7°C
(45°F)		 4°C
(39°F)		 -1°C
(30°F)		 -5°C
(24°F)
Mean minimum -14°C
(7°F)		 -14°C
(8°F)		 -12°C
(10°F)		 -9°C
(15°F)		 -4°C
(26°F)		 3°C
(38°F)		 6°C
(44°F)		 6°C
(42°F)		 1°C
(34°F)		 -2°C
(30°F)		 -9°C
(16°F)		 -13°C
(9°F)
Minimum -18°C
(-1°F)		 -21°C
(-5°F)		 -24°C
(-10°F)		 -16°C
(4°F)		 -9°C
(15°F)		 1°C
(35°F)		 5°C
(42°F)		 5°C
(41°F)		 -1°C
(30°F)		 -3°C
(26°F)		 -11°C
(12°F)		 -15°C
(6°F)

Compare climate in Altdorf with other places

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

Monthly average precipitation in Altdorf, Switzerland §

Altdorf usually has the most precipitation in June, July and August, with an average of 19 rainy days and 223 mm (8.8 inches) of precipitation per month.The driest months in Altdorf are February, April and November. On average, 108 mm (4.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Altdorf, 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) 154 (6.1) 108 (4.2) 136 (5.3) 114 (4.5) 190 (7.5) 229 (9.0) 208 (8.2) 231 (9.1) 168 (6.6) 162 (6.4) 102 (4.0) 190 (7.5)
Average precipitation days (≥ 1 mm) 12 12 17 14 22 20 19 19 16 14 12 19

Monthly sunshine hours in Altdorf, Switzerland §

The sunniest months in Altdorf are June, July and August, when the sun shines an average of 12 hours 42 minutes a day.Least sunny months in Altdorf: January, November and December receive an average of 6 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Altdorf, 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 163 226 298 355 365 381 409 377 314 274 210 183
Mean daily daylight hours 8h 58m 10h 17m 11h 56m 13h 37m 15h 4m 15h 48m 15h 25m 14h 7m 12h 30m 10h 49m 9h 20m 8h 34m

Solar UV radiation in Altdorf, Switzerland §

Altdorf experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 10, which corresponds to the Very High category of sun exposure.January, February 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 Altdorf UV Index data.

Average daily maximum UV levels by month for Altdorf, 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 3 5 7 8 10 9 8 6 4 3 2