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April Weather in Altenau, Germany

Last updated: August 23, 2025

In April, the average temperature in Altenau, Germany hovers around 8°C (46°F), with a minimum dipping to -6°C (22°F) and a maximum reaching 25°C (77°F). Expect 45 mm (1.8 in) of precipitation over 9 days, accompanied by an average humidity level of 83%.

April Temperature in Altenau

In April in Altenau, the average temperature is 8°C (46°F), with maximums reaching 25°C (77°F) and minimums dropping as low as -6°C (22°F). It's essential to pack layers to accommodate both warm and chilly weather while exploring this destination.

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

The chart illustrates April temperature patterns in Altenau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altenau, April typically has an average temperature of 8°C (46°F), with highs reaching up to 25°C (77°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec333439465363636456504136
Data source: Temperature data for Altenau 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 Altenau

In Altenau in April, the precipitation amount is 45 mm (1.8 in) spread over 9 days.

April Precipitation Trends in Altenau

The chart displays monthly precipitation patterns in Altenau, 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 Altenau, April typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec737273457486877860774777
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Altenau

In Altenau in April, humidity is 83%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making even short outings feel quite uncomfortable and prompting travelers to bundle up and seek shelter more frequently.

April Average Humidity in Altenau

This chart illustrates the average monthly humidity levels in Altenau, 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 Altenau is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%88%83%75%79%79%79%83%87%90%92%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Altenau

In Altenau in April, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Altenau.

Maximum UV Index Levels in Altenau for April

The chart shows the monthly maximum UV Index (UVI) for Altenau 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 Altenau typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Altenau 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 Altenau Compares to Other Months

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

This table compares monthly weather conditions in Altenau, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)73 mm (2.9 inches)91%low
February Weather1°C (34°F)72 mm (2.8 inches)90%low
March Weather4°C (39°F)73 mm (2.9 inches)88%moderate
April Weather8°C (46°F)45 mm (1.8 inches)83%moderate
May Weather12°C (54°F)74 mm (2.9 inches)75%high
June Weather17°C (63°F)86 mm (3.4 inches)79%very high
July Weather17°C (64°F)87 mm (3.4 inches)79%very high
August Weather18°C (64°F)78 mm (3.1 inches)79%high
September Weather14°C (57°F)60 mm (2.4 inches)83%high
October Weather10°C (50°F)77 mm (3.0 inches)87%moderate
November Weather5°C (41°F)47 mm (1.9 inches)90%low
December Weather2°C (36°F)77 mm (3.0 inches)92%low

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