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September Weather in Altkirchen, Germany

Last updated: August 23, 2025

In Altkirchen, Germany, the average temperature in September hovers around 15°C (60°F), with a minimum of 3°C (37°F) and a maximum soaring to 31°C (89°F). Expect a bit of wetness with an average precipitation of 51 mm (2.0 in) spread over 9 days, all while enjoying a comfortable average humidity level of 83%.

September Temperature in Altkirchen

In September in Altkirchen, the average temperature is 15°C (60°F). Maximums can reach 31°C (89°F), while minimums can dip as low as 3°C (37°F). This makes it a great time for travelers to enjoy a variety of outdoor activities, so be sure to pack accordingly!

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

The chart illustrates September temperature patterns in Altkirchen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altkirchen, September typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (89°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec353741485666676759524238
Data source: Temperature data for Altkirchen 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 Altkirchen

In Altkirchen in September, the total precipitation amount is 51 mm (2.0 in) spread over 9 days.

September Precipitation Trends in Altkirchen

The chart displays monthly precipitation patterns in Altkirchen, 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 Altkirchen, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec584659366451698151654368
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Altkirchen

In Altkirchen in September humidity is 83%. With an average temperature of 15°C (60°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable and sticky, as the air clings to your skin and dampens your clothes.

September Average Humidity in Altkirchen

This chart illustrates the average monthly humidity levels in Altkirchen, 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 Altkirchen 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 September generated using information from the Copernicus Climate Change Service.

September UV Index in Altkirchen

In Altkirchen in September, 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 Altkirchen.

Maximum UV Index Levels in Altkirchen for September

The chart shows the monthly maximum UV Index (UVI) for Altkirchen 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 Altkirchen typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224578875421
Data source: Altkirchen 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 Altkirchen Compares to Other Months

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

This table compares monthly weather conditions in Altkirchen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)58 mm (2.3 inches)91%low
February Weather3°C (38°F)46 mm (1.8 inches)90%low
March Weather5°C (41°F)59 mm (2.3 inches)88%moderate
April Weather9°C (48°F)36 mm (1.4 inches)83%moderate
May Weather13°C (56°F)64 mm (2.5 inches)75%high
June Weather19°C (66°F)51 mm (2.0 inches)79%very high
July Weather19°C (67°F)69 mm (2.7 inches)79%very high
August Weather20°C (68°F)81 mm (3.2 inches)79%high
September Weather15°C (60°F)51 mm (2.0 inches)83%moderate
October Weather11°C (52°F)65 mm (2.6 inches)87%moderate
November Weather6°C (43°F)43 mm (1.7 inches)90%low
December Weather3°C (38°F)68 mm (2.7 inches)92%low

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