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September Weather in Hahnweiler, Germany

Last updated: August 23, 2025

In September, the average temperature in Hahnweiler, Germany is a comfortable 15°C (59°F). Visitors can expect a range, with minimums dipping to 4°C (39°F) and maximums reaching up to 31°C (88°F). During this time, the area typically experiences about 57 mm (2.2 in) of rainfall spread over 8 days, contributing to an average humidity of 83%.

September Temperature in Hahnweiler

In September in Hahnweiler, the average temperature is 15°C (59°F). Maximums can reach up to 31°C (88°F) and minimums can drop to as low as 4°C (39°F). Overall, this month offers a comfortable climate for travelers, so be sure to pack both light clothing and a warmer layer for the cooler evenings.

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

The chart illustrates September temperature patterns in Hahnweiler, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hahnweiler, September typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (88°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec353843495665666659514238
Data source: Temperature data for Hahnweiler 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 Hahnweiler

In Hahnweiler in September, the precipitation amount is 57 mm (2.2 in) over the course of 8 days.

September Precipitation Trends in Hahnweiler

The chart displays monthly precipitation patterns in Hahnweiler, 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 Hahnweiler, September typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec7277854176766254576565123
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hahnweiler

In Hahnweiler in September humidity is 83%. With an average temperature of 15°C (59°F), this humidity feels like a cozy, damp embrace that can be quite stifling for traveling, making even short walks feel more exhausting than they should, and prompting a need for frequent breaks in shaded or air-conditioned areas.

September Average Humidity in Hahnweiler

This chart illustrates the average monthly humidity levels in Hahnweiler, 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 Hahnweiler is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%88%84%81%82%82%80%83%89%91%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hahnweiler

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

Maximum UV Index Levels in Hahnweiler for September

The chart shows the monthly maximum UV Index (UVI) for Hahnweiler 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 Hahnweiler typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234689876421
Data source: Hahnweiler 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 Hahnweiler Compares to Other Months

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

This table compares monthly weather conditions in Hahnweiler, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)72 mm (2.8 inches)91%low
February Weather4°C (39°F)77 mm (3.0 inches)90%moderate
March Weather6°C (43°F)85 mm (3.3 inches)88%moderate
April Weather10°C (50°F)41 mm (1.6 inches)84%high
May Weather13°C (56°F)76 mm (3.0 inches)81%very high
June Weather18°C (65°F)76 mm (3.0 inches)82%very high
July Weather19°C (67°F)61 mm (2.4 inches)82%very high
August Weather19°C (66°F)54 mm (2.1 inches)80%high
September Weather15°C (59°F)57 mm (2.2 inches)83%high
October Weather11°C (51°F)65 mm (2.5 inches)89%moderate
November Weather5°C (42°F)65 mm (2.6 inches)91%low
December Weather3°C (38°F)122 mm (4.8 inches)93%low

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