Climate and monthly weather forecast
Altdorf, Switzerland

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Weather in January

January, like December, is another subzero cold winter month in Altdorf, Switzerland, with temperature in the range of an average low of -7.9°C (17.8°F) and an average high of -0.9°C (30.4°F). With average temperatures fluctuating between a high of -0.9°C (30.4°F) and a low of -7.9°C (17.8°F), January stands out as the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Altdorf, is another freezing cold month, with temperature in the range of an average high of -0.4°C (31.3°F) and an average low of -8°C (17.6°F). Altdorf signifies an average high-temperature of a still freezing cold -0.4°C (31.3°F) in February, closely mirroring the -0.9°C (30.4°F) of January. Weather in February »

Weather in March

March, the first month of the spring in Altdorf, is a wintry month, with an average temperature varying between -4.9°C (23.2°F) and 3.1°C (37.6°F). The arrival of March witnesses a small shift in the average high-temperature, moving from a freezing cold -0.4°C (31.3°F) in February to a wintry 3.1°C (37.6°F). Weather in March »

Weather in April

April in Altdorf, Switzerland, is a chilly spring month, with an average temperature fluctuating between -0.8°C (30.6°F) and 7.8°C (46°F). Entering April, Altdorf notices a subtle temperature elevation, with the average high-temperature advancing from March's icy 3.1°C (37.6°F) to a frosty 7.8°C (46°F). Weather in April »

Weather in May

May, the last month of the spring in Altdorf, is a cool month, with an average temperature varying between 2.7°C (36.9°F) and 11.4°C (52.5°F). The start of May signals a slight increase in the average high-temperature, moving from a frosty 7.8°C (46°F) in April to a cool 11.4°C (52.5°F). Weather in May »

Weather in June

June, the first month of the summer in Altdorf, is a comfortable month, with an average temperature ranging between min 6.4°C (43.5°F) and max 16.5°C (61.7°F). The start of June is characterized by an increase in the average high-temperature, transitioning from a fresh 11.4°C (52.5°F) in May to an enjoyable 16.5°C (61.7°F). Weather in June »

Weather in July

July, like June, in Altdorf, Switzerland, is another comfortable summer month, with an average temperature ranging between min 8.5°C (47.3°F) and max 18.7°C (65.7°F). The advent of July presents an average high-temperature of a still comfortable 18.7°C (65.7°F), maintaining a close correlation with the preceding month. Weather in July »

Weather in August

August, the last month of the summer in Altdorf, is also an enjoyable month, with an average temperature varying between 8.8°C (47.8°F) and 18.8°C (65.8°F). Altdorf's August weather reaches an average high of 18.8°C (65.8°F) and an average low of 8.8°C (47.8°F), making it the warmest month. Weather in August »

Weather in September

The first month of the autumn, September, is still a mild month in Altdorf, Switzerland, with an average temperature fluctuating between 5.5°C (41.9°F) and 14.7°C (58.5°F). The average high-temperature shows a slight dip in September, from August's refreshing 18.8°C (65.8°F) to a moderate 14.7°C (58.5°F). Weather in September »

Weather in October

October, like September, in Altdorf, Switzerland, is another fresh autumn month, with an average temperature ranging between max 10°C (50°F) and min 2°C (35.6°F). A mild drop in Altdorf's average high-temperature is observed in October, transitioning from a mild 14.7°C (58.5°F) in September to a fresh 10°C (50°F). Weather in October »

Weather in November

The last month of the autumn, November, is also an icy month in Altdorf, Switzerland, with temperature in the range of an average low of -1.9°C (28.6°F) and an average high of 4.3°C (39.7°F). Altdorf observes a minor decrease in the average high-temperature with the arrival of November, falling from October's cool 10°C (50°F) to a cold 4.3°C (39.7°F). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Altdorf, Switzerland, with temperature in the range of an average low of -5.9°C (21.4°F) and an average high of 0.5°C (32.9°F). With the onset of December, Altdorf experiences a modest temperature adjustment, with the average high-temperature gently receding from a cold 4.3°C (39.7°F) in November to a still wintry 0.5°C (32.9°F). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Altdorf?

January, characterized by an average high temperature of -0.9°C (30.4°F) and a low temperature of -7.9°C (17.8°F), is generally the coldest month.

How many days does it rain in Altdorf?

In Altdorf, Switzerland, during the entire year, the rain falls for 216.7 days and collects up to 1294mm (50.94") of precipitation.

When does it snow in Altdorf?

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

How much does it snow in Altdorf?

Throughout the year, in Altdorf, Switzerland, there are 41 snowfall days, and 854mm (33.62") of snow is accumulated.

What are the months with the lowest UV index in Altdorf?

The months with the lowest UV index in Altdorf are January and November, with an average maximum UV index of 1.

What is the driest month in Altdorf?

The month with the least rainfall is February, when the rain falls for 12.3 days and typically collects 70mm (2.76") of precipitation.

What is the snowiest month in Altdorf?

February is the month with the most snowfall. Snow falls for 9.9 days and accumulates 232mm (9.13") of snow.

What is the most humid month in Altdorf?

The most humid month is March, with an average relative humidity of 90%.

When it does not snow in Altdorf?

In Altdorf, snow does not fall in June through September.

When are the longest days in Altdorf?

With an average of 15h and 48min of daylight, June has the longest days of the year in Altdorf.

What is the month with the highest UV index in Altdorf?

The months with the highest UV index in Altdorf, Switzerland, are June and July, with an average maximum UV index of 4.

What are the least humid months in Altdorf?

The months with the lowest humidity in Altdorf are July and August, with an average relative humidity of 80%.

What month has the most sunshine in Altdorf?

With an average of 10.1h of sunshine, July has the most sunshine of the year.

What is the hottest time of year in Altdorf?

Temperature readings reach their annual highs in August, averaging 18.8°C (65.8°F) and a minimum average of 8.8°C (47.8°F).

What is the wettest month in Altdorf?

The month with the most rainfall in Altdorf, Switzerland, is August, when the rain falls for 22.8 days and typically aggregates up to 166mm (6.54") of precipitation.

When is Daylight Saving Time (DST) in Altdorf?

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Altdorf, 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 month with the shortest days in Altdorf?

The month with the shortest days in Altdorf is December, with an average of 8h and 36min of daylight.

What is the month with the least sunshine in Altdorf?

December has the least sunshine of the year in Altdorf, with an average of 5h of sunshine.

Average temperature
Altdorf, Switzerland

Average temperature - Altdorf, Switzerland

The warmest month (with the highest average high temperature) is August (18.8°C).
The month with the lowest average high temperature is January (-0.9°C).

The month with the highest average low temperature is August (8.8°C).
The coldest month (with the lowest average low temperature) is February (-8°C).

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Average pressure
Altdorf, Switzerland

Average pressure - Altdorf, Switzerland

The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).

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Average wind speed
Altdorf, Switzerland

Average wind speed - Altdorf, Switzerland

The windiest month (with the highest average wind speed) is December (8km/h).
The calmest month (with the lowest average wind speed) is August (5.7km/h).

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Average humidity
Altdorf, Switzerland

Average humidity - Altdorf, Switzerland

The month with the highest relative humidity is March (90%).
The months with the lowest relative humidity are July and August (80%).

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Average rainfall
Altdorf, Switzerland

Average rainfall - Altdorf, Switzerland

The wettest month (with the highest rainfall) is August (166mm).
The driest month (with the least rainfall) is February (70mm).

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Average rainfall days
Altdorf, Switzerland

Average rainfall days - Altdorf, Switzerland

The month with the highest number of rainy days is July (24.1 days).
The month with the least rainy days is February (12.3 days).

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Average snowfall
Altdorf, Switzerland

Average snowfall - Altdorf, Switzerland

The month with the highest snowfall is February (232mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days
Altdorf, Switzerland

Average snowfall days - Altdorf, Switzerland

The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Altdorf, Switzerland

Average daylight / Average sunshine - Altdorf, Switzerland

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days
Altdorf, Switzerland

Average sunshine days - Altdorf, Switzerland

The month with the most sunshine days is October (15.5 days).
The month with the least sunshine days is July (4.4 days).

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Average UV index
Altdorf, Switzerland

Average UV index - Altdorf, Switzerland

The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and November (UV index 1).

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Average cloud cover
Altdorf, Switzerland

Average cloud cover - Altdorf, Switzerland

The months with the most cloud cover are February, March and May (Cloud cover 48).
The months with the least cloud cover are August and October (Cloud cover 37).

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Average visibility
Altdorf, Switzerland

Average visibility - Altdorf, Switzerland

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

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Altdorf, Switzerland

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