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May Weather in Altdorf, Germany

Last updated: August 23, 2025

In May, the average temperature in Altdorf, Germany hovers around 14°C (58°F). Expect a refreshing range where temperatures can drop to a cool 1°C (34°F), or rise as high as 32°C (89°F). This month also sees an average precipitation of 74 mm (2.9 in) spread across about 12 days, contributing to an average humidity level of 79%. Embrace the varied climate and prepare for a blend of sun and rain!

May Temperature in Altdorf

In May in Altdorf, the average temperature is 14°C (58°F), with maximums reaching 32°C (89°F) and minimums dipping as low as 1°C (34°F). It's advisable to pack layers to stay comfortable during your travels.

May Weather in Altdorf: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Altdorf, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altdorf, May typically has an average temperature of 14°C (58°F), with highs reaching up to 32°C (89°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec374045515868706962534339
Data source: Temperature data for Altdorf generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Altdorf

In Altdorf in May, the precipitation amount is 74 mm (2.9 in) over a span of 12 days.

May Precipitation Trends in Altdorf

The chart displays monthly precipitation patterns in Altdorf, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Altdorf, May typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec595864317470655746594994
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Altdorf

In Altdorf in May, humidity is 79%. With an average temperature of 14°C (58°F), this humidity feels like an oppressive blanket wrapped around you, making even the mild temperatures feel heavier and more stifling for traveling.

May Average Humidity in Altdorf

This chart illustrates the average monthly humidity levels in Altdorf, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Altdorf is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%83%79%82%83%84%86%88%89%91%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Altdorf

In Altdorf in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Altdorf.

Maximum UV Index Levels in Altdorf for May

The chart shows the monthly maximum UV Index (UVI) for Altdorf in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Altdorf typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234688876421
Data source: Altdorf May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Altdorf Compares to Other Months

Weather in Altdorf varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Altdorf, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Altdorf, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)59 mm (2.3 inches)91%low
February Weather5°C (40°F)58 mm (2.3 inches)89%moderate
March Weather7°C (45°F)63 mm (2.5 inches)87%moderate
April Weather11°C (52°F)31 mm (1.2 inches)83%high
May Weather14°C (58°F)74 mm (2.9 inches)79%very high
June Weather20°C (68°F)70 mm (2.7 inches)82%very high
July Weather21°C (70°F)65 mm (2.5 inches)83%very high
August Weather21°C (70°F)57 mm (2.3 inches)84%high
September Weather16°C (62°F)46 mm (1.8 inches)85%high
October Weather12°C (54°F)59 mm (2.3 inches)88%moderate
November Weather6°C (43°F)49 mm (1.9 inches)89%low
December Weather4°C (40°F)94 mm (3.7 inches)91%low

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