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September Weather in Heppen, Belgium

Last updated: August 22, 2025

In September, the average temperature in Heppen, Belgium reaches a pleasant 16°C (60°F). However, temperatures can vary significantly, with a minimum of 3°C (38°F) and a maximum of 34°C (94°F). Visitors should also prepare for 60 mm (2.4 in) of precipitation spread across approximately 10 days, accompanied by an average humidity level of 81%.

September Temperature in Heppen

In September in Heppen, the average temperature is 16°C (60°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 3°C (38°F). This variation makes it essential for travelers to pack both lightweight clothing and warmer layers to ensure comfort during their stay.

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

The chart illustrates September temperature patterns in Heppen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heppen, September typically has an average temperature of 16°C (60°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec394245505766676760544542
Data source: Temperature data for Heppen 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 Heppen

In Heppen in September, the precipitation amount is 60 mm (2.4 in) accumulated over a period of 10 days.

September Precipitation Trends in Heppen

The chart displays monthly precipitation patterns in Heppen, 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 Heppen, September typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec647275356277778060845697
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Heppen

In Heppen in September, humidity is 81%. With an average temperature of 16°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you as you travel, making you acutely aware of the sweat on your skin and creating an atmosphere that might dampen your spirits but also invites you to seek out refreshing beverages and shady spots.

September Average Humidity in Heppen

This chart illustrates the average monthly humidity levels in Heppen, 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 Heppen is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%87%84%77%74%72%71%81%88%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Heppen

In Heppen 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 Heppen.

Maximum UV Index Levels in Heppen for September

The chart shows the monthly maximum UV Index (UVI) for Heppen 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 Heppen typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Heppen 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 Heppen Compares to Other Months

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

This table compares monthly weather conditions in Heppen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)64 mm (2.5 inches)91%low
February Weather5°C (42°F)72 mm (2.8 inches)90%low
March Weather7°C (45°F)75 mm (2.9 inches)87%moderate
April Weather10°C (51°F)35 mm (1.4 inches)84%moderate
May Weather14°C (58°F)62 mm (2.4 inches)77%high
June Weather19°C (66°F)77 mm (3.0 inches)74%very high
July Weather19°C (67°F)77 mm (3.0 inches)72%very high
August Weather19°C (67°F)80 mm (3.2 inches)71%high
September Weather16°C (60°F)60 mm (2.4 inches)81%moderate
October Weather12°C (54°F)84 mm (3.3 inches)88%moderate
November Weather7°C (45°F)56 mm (2.2 inches)91%low
December Weather5°C (42°F)97 mm (3.8 inches)92%low

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