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September Weather in Les Waleffes, Belgium

Last updated: August 22, 2025

In September, the average temperature in Les Waleffes, Belgium hovers around 15°C (60°F). Expect a range that dips to a cool 3°C (37°F) at its lowest and can soar to 34°C (93°F) at its peak. With an average precipitation of 64 mm (2.5 in) over 9 days, you'll want to be prepared for some rain. Additionally, the average humidity sits at a comfortable 81%, adding to the overall climate experience.

September Temperature in Les Waleffes

In September in Les Waleffes, the average temperature is 15°C (60°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 3°C (37°F). This temperature range makes it an ideal time for travelers to enjoy a comfortable climate while exploring the region.

September Weather in Les Waleffes: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Les Waleffes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Les Waleffes, September typically has an average temperature of 15°C (60°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec384145505665666659544541
Data source: Temperature data for Les Waleffes 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 Les Waleffes

In Les Waleffes in September, the precipitation amount is 64 mm (2.5 in) over a span of 9 days.

September Precipitation Trends in Les Waleffes

The chart displays monthly precipitation patterns in Les Waleffes, 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 Les Waleffes, September typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec6774763864848189648757103
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Les Waleffes

In Les Waleffes in September, humidity is 81%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sluggish and draining, which can challenge even the best-prepared traveler.

September Average Humidity in Les Waleffes

This chart illustrates the average monthly humidity levels in Les Waleffes, 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 Les Waleffes 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 Les Waleffes

In Les Waleffes 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 Les Waleffes.

Maximum UV Index Levels in Les Waleffes for September

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

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

This table compares monthly weather conditions in Les Waleffes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)67 mm (2.7 inches)91%low
February Weather5°C (41°F)74 mm (2.9 inches)90%low
March Weather7°C (45°F)76 mm (3.0 inches)87%moderate
April Weather10°C (50°F)38 mm (1.5 inches)84%moderate
May Weather14°C (57°F)64 mm (2.5 inches)77%high
June Weather18°C (65°F)84 mm (3.3 inches)74%very high
July Weather19°C (66°F)81 mm (3.2 inches)72%very high
August Weather19°C (66°F)89 mm (3.5 inches)71%high
September Weather15°C (60°F)64 mm (2.5 inches)81%moderate
October Weather12°C (54°F)87 mm (3.4 inches)88%moderate
November Weather7°C (45°F)57 mm (2.2 inches)91%low
December Weather5°C (42°F)103 mm (4.1 inches)92%low

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