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September Weather in Flavion, Belgium

Last updated: August 22, 2025

In September, the average temperature in Flavion, Belgium is a pleasant 15°C (59°F). However, be prepared for a range, as it can drop to a chilly 2°C (36°F) or rise to a warm 33°C (91°F). Expect 63 mm (2.5 in) of precipitation over about 10 days, contributing to an average humidity of 82%.

September Temperature in Flavion

In September in Flavion, the average temperature is 15°C (59°F). The maximum can reach 33°C (91°F), while the minimum can dip as low as 2°C (36°F). This diverse temperature range makes Flavion an ideal destination for travelers seeking both warm days and cool nights.

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

The chart illustrates September temperature patterns in Flavion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Flavion, September typically has an average temperature of 15°C (59°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec374044495563656558524340
Data source: Temperature data for Flavion 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 Flavion

In Flavion in September, the precipitation amount is 63 mm (2.5 in) over a span of 10 days.

September Precipitation Trends in Flavion

The chart displays monthly precipitation patterns in Flavion, 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 Flavion, September typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7376824573787784638962112
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Flavion

In Flavion in September, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

September Average Humidity in Flavion

This chart illustrates the average monthly humidity levels in Flavion, 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 Flavion 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 Flavion

In Flavion 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 Flavion.

Maximum UV Index Levels in Flavion for September

The chart shows the monthly maximum UV Index (UVI) for Flavion 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 Flavion typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234578875421
Data source: Flavion 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 Flavion Compares to Other Months

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

This table compares monthly weather conditions in Flavion, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)73 mm (2.9 inches)91%low
February Weather4°C (40°F)75 mm (3.0 inches)89%moderate
March Weather7°C (44°F)82 mm (3.2 inches)87%moderate
April Weather9°C (49°F)45 mm (1.8 inches)85%moderate
May Weather13°C (55°F)73 mm (2.9 inches)82%high
June Weather17°C (63°F)78 mm (3.1 inches)82%very high
July Weather18°C (65°F)77 mm (3.0 inches)80%very high
August Weather18°C (65°F)84 mm (3.3 inches)76%high
September Weather15°C (59°F)63 mm (2.5 inches)82%moderate
October Weather11°C (52°F)89 mm (3.5 inches)89%moderate
November Weather6°C (44°F)62 mm (2.4 inches)92%low
December Weather4°C (40°F)112 mm (4.4 inches)92%low

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