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September Weather in Altenberg, Germany

Last updated: August 23, 2025

In Altenberg, Germany, the average temperature in September is a mild 13°C (56°F). During this time, expect the minimum to dip to 0°C (31°F), while the maximum can reach an enjoyable 29°C (84°F). Be prepared for some precipitation, with about 70 mm (2.8 in) falling over approximately 12 days. Additionally, the average humidity hovers around a cozy 81%, making for a uniquely refreshing atmosphere.

September Temperature in Altenberg

In September in Altenberg, the average temperature is 13°C (56°F). Maximum temperatures can reach 29°C (84°F), while minimums can drop as low as 0°C (31°F). Be sure to pack accordingly, as you'll experience a wide range of temperatures during your travels.

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

The chart illustrates September 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, September typically has an average temperature of 13°C (56°F), with highs reaching up to 29°C (84°F) and lows dropping to around 0°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec313338465364646456483934
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.

September Precipitation in Altenberg

In Altenberg in September, the precipitation amount is 70 mm (2.8 in) over the course of 12 days.

September Precipitation Trends in Altenberg

The chart displays monthly precipitation patterns in Altenberg, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Altenberg, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec6054583981737511370654162
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Altenberg

In Altenberg in September, humidity is 81%. With an average temperature of 13°C (56°F), this humidity feels like a blanket of damp air that clings to your skin, making it essential to pack breathable clothing and stay hydrated while exploring.

September Average Humidity in Altenberg

This chart illustrates the average monthly humidity levels in Altenberg, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Altenberg is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%87%81%71%75%74%76%81%85%88%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Altenberg

In Altenberg in September, 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 September

The chart shows the monthly maximum UV Index (UVI) for Altenberg in September, 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 September, the maximum UV index in Altenberg typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224678876421
Data source: Altenberg September 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 September 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 September’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 September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)60 mm (2.3 inches)90%low
February Weather0°C (33°F)54 mm (2.1 inches)89%low
March Weather3°C (38°F)58 mm (2.3 inches)87%moderate
April Weather8°C (46°F)39 mm (1.5 inches)81%high
May Weather12°C (54°F)81 mm (3.2 inches)71%high
June Weather18°C (64°F)73 mm (2.9 inches)75%very high
July Weather18°C (64°F)75 mm (3.0 inches)74%very high
August Weather18°C (65°F)113 mm (4.5 inches)76%high
September Weather13°C (56°F)70 mm (2.8 inches)81%high
October Weather9°C (49°F)65 mm (2.6 inches)85%moderate
November Weather4°C (39°F)41 mm (1.6 inches)88%low
December Weather1°C (34°F)62 mm (2.5 inches)92%low

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