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September Weather in Lierneux, Belgium

Last updated: August 22, 2025

In September, the average temperature in Lierneux, Belgium hovers around 14°C (57°F), with lows dipping to 1°C (34°F) and highs peaking at 32°C (89°F). Travelers should be prepared for 80 mm (3.1 in) of precipitation spread over 10 days, resulting in an average humidity level of 81%. This mix of warmth and moisture creates a lush environment, perfect for exploring the region’s beauty!

September Temperature in Lierneux

In September, in Lierneux, the average temperature is 14°C (57°F). Maximum temperatures can reach up to 32°C (89°F), while minimums can drop as low as 1°C (34°F). Be prepared for a wide range of temperatures if you plan to travel during this month.

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

The chart illustrates September temperature patterns in Lierneux, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lierneux, September typically has an average temperature of 14°C (57°F), with highs reaching up to 32°C (89°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec343741475362636357504138
Data source: Temperature data for Lierneux 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 Lierneux

In Lierneux in September, the total precipitation amount is 80 mm (3.1 in) over a period of 10 days.

September Precipitation Trends in Lierneux

The chart displays monthly precipitation patterns in Lierneux, 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 Lierneux, September typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec96881064889978890809672139
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lierneux

In Lierneux in September, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.

September Average Humidity in Lierneux

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

In Lierneux in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Lierneux, you can refer to this Hourly UV Index in Lierneux.

Maximum UV Index Levels in Lierneux for September

The chart shows the monthly maximum UV Index (UVI) for Lierneux 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 Lierneux typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234588876421
Data source: Lierneux 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 Lierneux Compares to Other Months

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

This table compares monthly weather conditions in Lierneux, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)96 mm (3.8 inches)91%low
February Weather3°C (38°F)88 mm (3.5 inches)90%moderate
March Weather5°C (42°F)106 mm (4.2 inches)87%moderate
April Weather8°C (47°F)48 mm (1.9 inches)84%moderate
May Weather12°C (54°F)89 mm (3.5 inches)77%very high
June Weather17°C (62°F)97 mm (3.8 inches)74%very high
July Weather17°C (63°F)88 mm (3.5 inches)72%very high
August Weather17°C (63°F)90 mm (3.5 inches)71%high
September Weather14°C (57°F)80 mm (3.1 inches)81%high
October Weather10°C (50°F)95 mm (3.8 inches)88%moderate
November Weather5°C (42°F)72 mm (2.8 inches)91%low
December Weather3°C (38°F)139 mm (5.5 inches)92%low

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