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September Weather in Waltwilder, Belgium

Last updated: August 22, 2025

In Waltwilder, Belgium, the average temperature in September hovers around 15°C (60°F), with fluctuations from a chilly 3°C (37°F) to a warm 34°C (93°F). Expect some rain, as precipitation amounts reach 65 mm (2.5 in) over about 10 days during the month, all while maintaining an average humidity level of 81%.

September Temperature in Waltwilder

In September in Waltwilder, 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 Waltwilder: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Waltwilder, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waltwilder, 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).
JanFebMarAprMayJunJulAugSepOctNovDec384145505665666659534441
Data source: Temperature data for Waltwilder 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 Waltwilder

In Waltwilder in September, the total precipitation amount is 65 mm (2.5 in) over the course of 10 days.

September Precipitation Trends in Waltwilder

The chart displays monthly precipitation patterns in Waltwilder, 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 Waltwilder, September typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7176803965888284658758106
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Waltwilder

In Waltwilder 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 Waltwilder

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

In Waltwilder 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 Waltwilder.

Maximum UV Index Levels in Waltwilder for September

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

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

This table compares monthly weather conditions in Waltwilder, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)71 mm (2.8 inches)91%low
February Weather5°C (41°F)76 mm (3.0 inches)90%low
March Weather7°C (45°F)80 mm (3.1 inches)87%moderate
April Weather10°C (50°F)39 mm (1.5 inches)84%moderate
May Weather14°C (57°F)65 mm (2.5 inches)77%high
June Weather18°C (65°F)88 mm (3.5 inches)74%very high
July Weather19°C (66°F)82 mm (3.2 inches)72%very high
August Weather19°C (66°F)84 mm (3.3 inches)71%high
September Weather15°C (60°F)65 mm (2.5 inches)81%moderate
October Weather12°C (54°F)87 mm (3.4 inches)88%moderate
November Weather7°C (45°F)58 mm (2.3 inches)91%low
December Weather5°C (41°F)106 mm (4.2 inches)92%low

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