nomadseason

September Weather in Hamm (Sieg), Germany

Last updated: August 23, 2025

In September, the average temperature in Hamm (Sieg), Germany hovers around 14°C (58°F). Expect a wide range, where the minimum can drop to 2°C (36°F) and the maximum can soar to 31°C (88°F). Prepare for about 67 mm (2.7 in) of precipitation spread over 10 days, coupled with a high average humidity of 82%.

September Temperature in Hamm (Sieg)

In September, in Hamm (Sieg), the average temperature is 14°C (58°F). The maximum can reach 31°C (88°F), while the minimum can be as low as 2°C (36°F). This variation in temperature makes Hamm (Sieg) a versatile destination for travelers, offering both warm and cool experiences.

September Weather in Hamm (Sieg): Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hamm (Sieg), showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hamm (Sieg), September typically has an average temperature of 14°C (58°F), with highs reaching up to 31°C (88°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec353742485564656558514238
Data source: Temperature data for Hamm (Sieg) generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Hamm (Sieg)

In Hamm (Sieg) in September, the precipitation amount is 67 mm (2.7 in) over a span of 10 days.

September Precipitation Trends in Hamm (Sieg)

The chart displays monthly precipitation patterns in Hamm (Sieg), 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 Hamm (Sieg), September typically receives around 67 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec101961064483769082678963142
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Hamm (Sieg)

In Hamm (Sieg) in September, humidity is 82%. With an average temperature of 14°C (58°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and sticky.

September Average Humidity in Hamm (Sieg)

This chart illustrates the average monthly humidity levels in Hamm (Sieg), 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 Hamm (Sieg) is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%87%83%76%74%74%75%82%88%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hamm (Sieg)

In Hamm (Sieg) 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 Hamm (Sieg).

Maximum UV Index Levels in Hamm (Sieg) for September

The chart shows the monthly maximum UV Index (UVI) for Hamm (Sieg) 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 Hamm (Sieg) typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Hamm (Sieg) 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 Hamm (Sieg) Compares to Other Months

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

This table compares monthly weather conditions in Hamm (Sieg), showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)100 mm (4.0 inches)92%low
February Weather3°C (38°F)96 mm (3.8 inches)90%low
March Weather6°C (42°F)106 mm (4.2 inches)87%moderate
April Weather9°C (49°F)44 mm (1.7 inches)83%moderate
May Weather13°C (55°F)83 mm (3.2 inches)76%high
June Weather18°C (64°F)76 mm (3.0 inches)74%very high
July Weather18°C (65°F)90 mm (3.6 inches)74%very high
August Weather18°C (65°F)82 mm (3.2 inches)75%high
September Weather14°C (58°F)67 mm (2.7 inches)82%moderate
October Weather10°C (51°F)89 mm (3.5 inches)88%moderate
November Weather5°C (42°F)63 mm (2.5 inches)90%low
December Weather3°C (38°F)142 mm (5.6 inches)92%low

Compare Hamm (Sieg)'s Climate with Cities Worldwide