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April Weather in Altenberg, Austria

Last updated: August 22, 2025

In April, the average temperature in Altenberg, Austria is a cool 11°C (52°F). Temperatures can range from a chilly -5°C (23°F) at their lowest to a comfortable 28°C (83°F) at their highest. Expect 38 mm (1.5 in) of precipitation spread over about 8 days, with an average humidity of 78%, creating a refreshing atmosphere for visitors.

April Temperature in Altenberg

In April in Altenberg, the average temperature is 11°C (52°F). The maximum can reach 28°C (83°F), and the minimum can be as low as -5°C (23°F). This range makes it essential for travelers to pack both warm and light clothing to comfortably enjoy their visit.

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

The chart illustrates April temperature patterns in Altenberg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altenberg, April typically has an average temperature of 11°C (52°F), with highs reaching up to 28°C (83°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec343843525969707162534337
Data source: Temperature data for Altenberg 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 Altenberg

In Altenberg in April, the total precipitation amount is 38 mm (1.5 in), spread over 8 days.

April Precipitation Trends in Altenberg

The chart displays monthly precipitation patterns in Altenberg, 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 Altenberg, April typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec363137398470747677474657
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Altenberg

In Altenberg in April humidity is 78%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities somewhat uncomfortable and travel more challenging as you navigate the moist air.

April Average Humidity in Altenberg

This chart illustrates the average monthly humidity levels in Altenberg, 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 Altenberg is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%87%85%78%74%77%76%76%75%85%90%91%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Altenberg

In Altenberg in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Altenberg, you can refer to this Hourly UV Index in Altenberg.

Maximum UV Index Levels in Altenberg for April

The chart shows the monthly maximum UV Index (UVI) for Altenberg 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 Altenberg typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235688876421
Data source: Altenberg 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 Altenberg Compares to Other Months

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

This table compares monthly weather conditions in Altenberg, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)36 mm (1.4 inches)90%low
February Weather3°C (38°F)31 mm (1.2 inches)87%moderate
March Weather6°C (43°F)37 mm (1.5 inches)85%moderate
April Weather11°C (52°F)38 mm (1.5 inches)78%high
May Weather15°C (59°F)84 mm (3.3 inches)73%very high
June Weather21°C (70°F)70 mm (2.8 inches)77%very high
July Weather21°C (71°F)74 mm (2.9 inches)76%very high
August Weather22°C (71°F)76 mm (3.0 inches)76%high
September Weather17°C (62°F)77 mm (3.0 inches)75%high
October Weather12°C (53°F)47 mm (1.8 inches)85%moderate
November Weather6°C (43°F)46 mm (1.8 inches)90%low
December Weather3°C (37°F)57 mm (2.2 inches)91%low

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