nomadseason

September Weather in Bertem, Belgium

Last updated: August 22, 2025

In Bertem, Belgium, the average temperature in September is a pleasant 15°C (60°F). Expect a minimum of 3°C (38°F) and a maximum of 33°C (92°F) throughout the month. Be prepared for around 60 mm (2.4 in) of precipitation spread over 9 days, and embrace the average humidity of 82% for a truly immersive experience!

September Temperature in Bertem

In September in Bertem, the average temperature is 15°C (60°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 3°C (38°F). This diverse temperature range makes it advisable for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates September temperature patterns in Bertem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bertem, September typically has an average temperature of 15°C (60°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec394145505664666659544541
Data source: Temperature data for Bertem 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 Bertem

In Bertem in September, the total precipitation amount is 60 mm (2.4 in), occurring over a span of 9 days.

September Precipitation Trends in Bertem

The chart displays monthly precipitation patterns in Bertem, 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 Bertem, September typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec657172376275788860815796
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Bertem

In Bertem in September humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.

September Average Humidity in Bertem

This chart illustrates the average monthly humidity levels in Bertem, 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 Bertem is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bertem

In Bertem 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 Bertem.

Maximum UV Index Levels in Bertem for September

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

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

This table compares monthly weather conditions in Bertem, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)65 mm (2.6 inches)91%low
February Weather5°C (42°F)71 mm (2.8 inches)89%low
March Weather7°C (45°F)72 mm (2.8 inches)87%moderate
April Weather10°C (50°F)37 mm (1.4 inches)85%moderate
May Weather13°C (57°F)62 mm (2.4 inches)82%high
June Weather18°C (65°F)75 mm (3.0 inches)82%very high
July Weather19°C (66°F)78 mm (3.1 inches)80%very high
August Weather19°C (66°F)88 mm (3.5 inches)76%high
September Weather15°C (60°F)60 mm (2.4 inches)82%moderate
October Weather12°C (54°F)81 mm (3.2 inches)89%moderate
November Weather7°C (45°F)57 mm (2.3 inches)92%low
December Weather5°C (42°F)96 mm (3.8 inches)92%low

Compare Bertem's Climate with Cities Worldwide