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September Weather in Ilmmunster, Germany

Last updated: August 23, 2025

In September, the average temperature in Ilmmunster, Germany hovers around 15°C (59°F), with fluctuations between a chilly 3°C (37°F) at night and a warm 29°C (85°F) during the day. Be prepared for some rain, as you can expect about 69 mm (2.7 in) of precipitation spread over 11 days. With an average humidity of 85%, it’s a good idea to stay hydrated and keep cool!

September Temperature in Ilmmunster

In September in Ilmmunster, the average temperature is 15°C (59°F). Maximums can reach 29°C (85°F), and minimums can be as low as 3°C (37°F). This makes it a great time for travelers to enjoy mild weather while exploring all that Ilmmunster has to offer.

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

The chart illustrates September temperature patterns in Ilmmunster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilmmunster, September typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (85°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec333742505666676759514136
Data source: Temperature data for Ilmmunster 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 Ilmmunster

In Ilmmunster in September, the total precipitation amount is 69 mm (2.7 in) spread across 11 days.

September Precipitation Trends in Ilmmunster

The chart displays monthly precipitation patterns in Ilmmunster, 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 Ilmmunster, September typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec676359401141139911469684690
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ilmmunster

In Ilmmunster in September, humidity is 85%. With an average temperature of 15°C (59°F), this humidity feels like a warm, damp blanket wrapping around you, making traveling quite uncomfortable and sticky. Be prepared to take frequent breaks and stay hydrated as you navigate the lush, but humid environment.

September Average Humidity in Ilmmunster

This chart illustrates the average monthly humidity levels in Ilmmunster, 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 Ilmmunster is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%88%84%77%82%83%84%85%88%88%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ilmmunster

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

Maximum UV Index Levels in Ilmmunster for September

The chart shows the monthly maximum UV Index (UVI) for Ilmmunster 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 Ilmmunster typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Ilmmunster 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 Ilmmunster Compares to Other Months

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

This table compares monthly weather conditions in Ilmmunster, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)67 mm (2.6 inches)91%low
February Weather3°C (38°F)63 mm (2.5 inches)89%moderate
March Weather6°C (42°F)59 mm (2.3 inches)88%moderate
April Weather10°C (50°F)40 mm (1.6 inches)84%high
May Weather14°C (57°F)114 mm (4.5 inches)77%very high
June Weather19°C (66°F)113 mm (4.5 inches)82%very high
July Weather20°C (67°F)99 mm (3.9 inches)83%very high
August Weather20°C (68°F)114 mm (4.5 inches)84%very high
September Weather15°C (59°F)69 mm (2.7 inches)85%high
October Weather10°C (51°F)68 mm (2.7 inches)88%moderate
November Weather5°C (41°F)46 mm (1.8 inches)88%low
December Weather2°C (37°F)90 mm (3.5 inches)91%low

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