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April Weather in Illgau, Switzerland

Last updated: August 27, 2025

In April, the average temperature in Illgau, Switzerland hovers around 5°C (41°F). Expect a chill in the air, with minimum temperatures plummeting to -16°C (4°F) and maximums reaching up to 20°C (68°F). Precipitation is notable, with approximately 114 mm (4.5 in) over 14 days, contributing to an average humidity of a damp 84%. Be prepared for a cool, wet month!

April Temperature in Illgau

In April in Illgau, the average temperature is 5°C (41°F), with maximums reaching 20°C (68°F) and minimums dropping as low as -16°C (4°F). Be prepared for a wide range of temperatures when planning your travels!

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

The chart illustrates April 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, April typically has an average temperature of 5°C (41°F), with highs reaching up to 20°C (68°F) and lows dropping to around -16°C (4°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.

April Precipitation in Illgau

In Illgau in April, the total precipitation amount is 114 mm (4.5 in) over the course of 14 days.

April Precipitation Trends in Illgau

The chart displays monthly precipitation patterns in Illgau, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Illgau, April typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec154108136114190229208231168162102190
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Illgau

In Illgau in April humidity is 84%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through the cold, heavy air that clings to your skin.

April Average Humidity in Illgau

This chart illustrates the average monthly humidity levels in Illgau, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Illgau is approximately 84%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Illgau

In Illgau in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Illgau.

Maximum UV Index Levels in Illgau for April

The chart shows the monthly maximum UV Index (UVI) for Illgau in April, 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 April, the maximum UV index in Illgau typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357810986432
Data source: Illgau April 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 April 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 April’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 April’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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