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May Weather in Illgau, Switzerland

Last updated: August 27, 2025

In May, the average temperature in Illgau, Switzerland hovers around 8°C (48°F). During this month, temperatures can vary significantly, with a minimum of -9°C (15°F) and a maximum reaching up to 25°C (77°F). Expect considerable precipitation—around 190 mm (7.5 in)—over approximately 22 days, accompanied by an average humidity level of 80%.

May Temperature in Illgau

In May in Illgau, the average temperature is 8°C (48°F). Maximums can reach 25°C (77°F) and minimums can be as low as -9°C (15°F). Be sure to pack for a wide range of temperatures when traveling during this time.

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

The chart illustrates May temperature patterns in Illgau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Illgau, May typically has an average temperature of 8°C (48°F), with highs reaching up to 25°C (77°F) and lows dropping to around -9°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec252934414757595952453528
Data source: Temperature data for Illgau 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 Illgau

In Illgau in May, the total precipitation amount is 190 mm (7.5 in) spread over 22 days.

May Precipitation Trends in Illgau

The chart displays monthly precipitation patterns in Illgau, 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 Illgau, May typically receives around 190 mm (7.5 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec154108136114190229208231168162102190
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Illgau

In Illgau in May, humidity is 80%. With an average temperature of 8°C (48°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and travel a bit more arduous as the cool air mixes with the moisture, creating a heavy atmosphere.

May Average Humidity in Illgau

This chart illustrates the average monthly humidity levels in Illgau, 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 Illgau is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%89%87%84%80%82%83%80%83%90%89%90%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Illgau

In Illgau 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 Illgau.

Maximum UV Index Levels in Illgau for May

The chart shows the monthly maximum UV Index (UVI) for Illgau 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 Illgau typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357810986432
Data source: Illgau 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 Illgau Compares to Other Months

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

This table compares monthly weather conditions in Illgau, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)154 mm (6.1 inches)92%low
February Weather-2°C (30°F)108 mm (4.2 inches)89%moderate
March Weather1°C (34°F)136 mm (5.3 inches)87%moderate
April Weather5°C (41°F)114 mm (4.5 inches)84%high
May Weather8°C (48°F)190 mm (7.5 inches)80%very high
June Weather14°C (57°F)229 mm (9.0 inches)82%very high
July Weather15°C (59°F)208 mm (8.2 inches)83%very high
August Weather15°C (59°F)231 mm (9.1 inches)80%very high
September Weather11°C (52°F)168 mm (6.6 inches)83%high
October Weather7°C (45°F)162 mm (6.4 inches)90%moderate
November Weather2°C (35°F)102 mm (4.0 inches)88%moderate
December Weather-2°C (29°F)190 mm (7.5 inches)90%low

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