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September Weather in Hermalle-sous-Huy, Belgium

Last updated: August 22, 2025

In September, the average temperature in Hermalle-sous-Huy, Belgium hovers around 15°C (59°F), with extremes ranging from a chilly 2°C (36°F) to a warm 34°C (93°F). Expect about 68 mm (2.7 in) of precipitation spread over 11 days, contributing to an average humidity level of 81%.

September Temperature in Hermalle-sous-Huy

In September in Hermalle-sous-Huy, the average temperature is 15°C (59°F). The maximum can reach 34°C (93°F) and the minimum can be as low as 2°C (36°F). This variation in temperature makes Hermalle-sous-Huy an ideal destination for travelers seeking both warm and cool experiences.

September Weather in Hermalle-sous-Huy: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hermalle-sous-Huy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hermalle-sous-Huy, September typically has an average temperature of 15°C (59°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec374044495564656559534440
Data source: Temperature data for Hermalle-sous-Huy 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 Hermalle-sous-Huy

In Hermalle-sous-Huy in September, the total precipitation amount is 68 mm (2.7 in) spread over a duration of 11 days.

September Precipitation Trends in Hermalle-sous-Huy

The chart displays monthly precipitation patterns in Hermalle-sous-Huy, 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 Hermalle-sous-Huy, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7978884269808384689063116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hermalle-sous-Huy

In Hermalle-sous-Huy 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 Hermalle-sous-Huy

This chart illustrates the average monthly humidity levels in Hermalle-sous-Huy, 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 Hermalle-sous-Huy 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 Hermalle-sous-Huy

In Hermalle-sous-Huy 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 Hermalle-sous-Huy.

Maximum UV Index Levels in Hermalle-sous-Huy for September

The chart shows the monthly maximum UV Index (UVI) for Hermalle-sous-Huy 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 Hermalle-sous-Huy typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234578875421
Data source: Hermalle-sous-Huy 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 Hermalle-sous-Huy Compares to Other Months

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

This table compares monthly weather conditions in Hermalle-sous-Huy, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)79 mm (3.1 inches)91%low
February Weather5°C (41°F)78 mm (3.1 inches)90%moderate
March Weather7°C (44°F)88 mm (3.5 inches)87%moderate
April Weather9°C (49°F)41 mm (1.6 inches)84%moderate
May Weather13°C (56°F)69 mm (2.7 inches)77%high
June Weather18°C (64°F)80 mm (3.2 inches)74%very high
July Weather18°C (66°F)83 mm (3.3 inches)72%very high
August Weather18°C (65°F)84 mm (3.3 inches)71%high
September Weather15°C (59°F)68 mm (2.7 inches)81%moderate
October Weather11°C (53°F)90 mm (3.5 inches)88%moderate
November Weather7°C (44°F)63 mm (2.5 inches)91%low
December Weather5°C (41°F)116 mm (4.6 inches)92%low

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