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September Weather in Forges, Belgium

Last updated: August 22, 2025

In September, the average temperature in Forges, Belgium hovers around 15°C (59°F). Expect a range from a brisk 3°C (37°F) to a warm 32°C (91°F) throughout the month. With 65 mm (2.5 in) of precipitation spread over 10 days, you might want to keep an umbrella handy. Additionally, the average humidity sits at a comfortable 81%, making it a quintessential time to experience the local climate.

September Temperature in Forges

In September in Forges, the average temperature is 15°C (59°F). The maximum can reach 32°C (91°F), and the minimum can be as low as 3°C (37°F). Travelers should be prepared for a range of temperatures and pack accordingly.

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

The chart illustrates September temperature patterns in Forges, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forges, September typically has an average temperature of 15°C (59°F), with highs reaching up to 32°C (91°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec374044495563656559524340
Data source: Temperature data for Forges 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 Forges

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

September Precipitation Trends in Forges

The chart displays monthly precipitation patterns in Forges, 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 Forges, September typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec83869347787172856510074131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Forges

In Forges in September humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

September Average Humidity in Forges

This chart illustrates the average monthly humidity levels in Forges, 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 Forges is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%84%83%83%80%76%81%88%92%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Forges

In Forges 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 Forges.

Maximum UV Index Levels in Forges for September

The chart shows the monthly maximum UV Index (UVI) for Forges 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 Forges typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234688875421
Data source: Forges 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 Forges Compares to Other Months

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

This table compares monthly weather conditions in Forges, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)83 mm (3.3 inches)91%low
February Weather4°C (40°F)86 mm (3.4 inches)89%moderate
March Weather7°C (44°F)93 mm (3.7 inches)86%moderate
April Weather9°C (49°F)47 mm (1.9 inches)84%high
May Weather13°C (55°F)78 mm (3.1 inches)82%very high
June Weather17°C (63°F)71 mm (2.8 inches)82%very high
July Weather18°C (65°F)72 mm (2.8 inches)80%very high
August Weather18°C (65°F)85 mm (3.3 inches)76%high
September Weather15°C (59°F)65 mm (2.5 inches)81%moderate
October Weather11°C (52°F)100 mm (3.9 inches)88%moderate
November Weather6°C (44°F)74 mm (2.9 inches)92%low
December Weather4°C (40°F)131 mm (5.1 inches)93%low

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