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September Weather in Undenheim, Germany

Last updated: August 23, 2025

In Undenheim, Germany, the average temperature in September is a comfortable 16°C (62°F). However, be prepared for temperature fluctuations, with a minimum as low as 4°C (39°F) and a maximum reaching 34°C (93°F). Expect some rainfall as well, with an average precipitation of 42 mm (1.6 in) spread over 7 days, and a notable humidity level of 85%.

September Temperature in Undenheim

In September in Undenheim, the average temperature is 16°C (62°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop as low as 4°C (39°F). Overall, it's a month of diverse weather, so be prepared for both warm days and cooler nights during your travels.

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

The chart illustrates September temperature patterns in Undenheim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Undenheim, September typically has an average temperature of 16°C (62°F), with highs reaching up to 34°C (93°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec374044515868706961534339
Data source: Temperature data for Undenheim 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 Undenheim

In Undenheim in September, the total precipitation amount is 42 mm (1.6 in) accumulated over a span of 7 days.

September Precipitation Trends in Undenheim

The chart displays monthly precipitation patterns in Undenheim, 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 Undenheim, September typically receives around 42 mm (1.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec515159296670565342524692
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Undenheim

In Undenheim in September humidity is 85%. With an average temperature of 16°C (62°F), this humidity feels like a warm, heavy blanket wrapping around you, making travel feel sluggish and sticky, and urging you to seek shade and hydration at every stop.

September Average Humidity in Undenheim

This chart illustrates the average monthly humidity levels in Undenheim, 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 Undenheim is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%83%79%82%83%84%86%88%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Undenheim

In Undenheim 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 Undenheim, you can refer to this Hourly UV Index in Undenheim.

Maximum UV Index Levels in Undenheim for September

The chart shows the monthly maximum UV Index (UVI) for Undenheim 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 Undenheim typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234688876421
Data source: Undenheim 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 Undenheim Compares to Other Months

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

This table compares monthly weather conditions in Undenheim, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)51 mm (2.0 inches)91%low
February Weather4°C (40°F)51 mm (2.0 inches)89%moderate
March Weather7°C (44°F)59 mm (2.3 inches)87%moderate
April Weather10°C (51°F)29 mm (1.1 inches)83%high
May Weather14°C (58°F)66 mm (2.6 inches)79%very high
June Weather20°C (68°F)70 mm (2.8 inches)82%very high
July Weather21°C (70°F)56 mm (2.2 inches)83%very high
August Weather21°C (69°F)53 mm (2.1 inches)84%high
September Weather16°C (62°F)42 mm (1.6 inches)85%high
October Weather12°C (53°F)52 mm (2.0 inches)88%moderate
November Weather6°C (43°F)46 mm (1.8 inches)89%low
December Weather4°C (40°F)92 mm (3.6 inches)91%low

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