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September Weather in Welle, Belgium

Last updated: August 22, 2025

In Welle, Belgium, the average temperature in September hovers around 16°C (60°F), offering a pleasant climate for visitors. However, temperatures can vary, dipping as low as 4°C (40°F) and soaring up to 32°C (90°F). Expect around 52 mm (2.1 in) of precipitation over 9 days, contributing to a humidity level of 82% that adds a refreshing touch to the air.

September Temperature in Welle

In September in Welle, the average temperature is 16°C (60°F), with maximums reaching 32°C (90°F) and minimums dropping as low as 4°C (40°F). This range makes it an ideal destination for travelers seeking moderate weather and a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Welle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Welle, September typically has an average temperature of 16°C (60°F), with highs reaching up to 32°C (90°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec404245505765666660554642
Data source: Temperature data for Welle 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 Welle

In Welle in September, the total precipitation amount is 52 mm (2.1 in) over the course of 9 days.

September Precipitation Trends in Welle

The chart displays monthly precipitation patterns in Welle, 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 Welle, September typically receives around 52 mm (2.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec626569396063667352815389
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Welle

In Welle in September humidity is 82%. With an average temperature of 16°C (60°F), this humidity feels like walking through a warm, thick blanket that clings to your skin, making every step feel heavier and travel more exhausting.

September Average Humidity in Welle

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

In Welle 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 Welle.

Maximum UV Index Levels in Welle for September

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

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

This table compares monthly weather conditions in Welle, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)62 mm (2.5 inches)91%low
February Weather6°C (42°F)65 mm (2.6 inches)89%low
March Weather7°C (46°F)68 mm (2.7 inches)87%moderate
April Weather10°C (51°F)39 mm (1.5 inches)85%moderate
May Weather14°C (57°F)59 mm (2.3 inches)82%high
June Weather18°C (65°F)63 mm (2.5 inches)82%very high
July Weather19°C (66°F)66 mm (2.6 inches)80%very high
August Weather19°C (66°F)73 mm (2.9 inches)76%high
September Weather16°C (60°F)52 mm (2.1 inches)82%moderate
October Weather13°C (55°F)81 mm (3.2 inches)89%moderate
November Weather8°C (46°F)53 mm (2.1 inches)92%low
December Weather6°C (43°F)89 mm (3.5 inches)92%low

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