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September Weather in Saint-Vith, Belgium

Last updated: August 22, 2025

In Saint-Vith, Belgium, the average temperature in September hovers around 13°C (56°F). Interestingly, temperatures can range from a brisk 2°C (35°F) to a warm 31°C (88°F). Expect 76 mm (3.0 in) of precipitation spread over about 10 days, with an average humidity level of 81%. So prepare for a mix of weather during your visit!

September Temperature in Saint-Vith

In September in Saint-Vith, the average temperature is 13°C (56°F). Maximums can reach 31°C (88°F), while minimums can drop as low as 2°C (35°F). It's advisable to pack layers to accommodate the fluctuating temperatures during your travels.

September Weather in Saint-Vith: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint-Vith, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Vith, September typically has an average temperature of 13°C (56°F), with highs reaching up to 31°C (88°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec333640465261626256494036
Data source: Temperature data for Saint-Vith 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 Saint-Vith

In Saint-Vith in September, the total precipitation amount is 76 mm (3.0 in) spread over a period of 10 days.

September Precipitation Trends in Saint-Vith

The chart displays monthly precipitation patterns in Saint-Vith, 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 Saint-Vith, September typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8985984989989287768569129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint-Vith

In Saint-Vith in September, humidity is 81%. With an average temperature of 13°C (56°F), this humidity feels like a blanket of damp air that clings to your skin, making it essential to pack breathable clothing and stay hydrated while exploring.

September Average Humidity in Saint-Vith

This chart illustrates the average monthly humidity levels in Saint-Vith, 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 Saint-Vith 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 Saint-Vith

In Saint-Vith 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 Saint-Vith, you can refer to this Hourly UV Index in Saint-Vith.

Maximum UV Index Levels in Saint-Vith for September

The chart shows the monthly maximum UV Index (UVI) for Saint-Vith 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 Saint-Vith typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234589876421
Data source: Saint-Vith 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 Saint-Vith Compares to Other Months

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

This table compares monthly weather conditions in Saint-Vith, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)89 mm (3.5 inches)91%low
February Weather2°C (36°F)85 mm (3.3 inches)90%moderate
March Weather5°C (40°F)98 mm (3.9 inches)87%moderate
April Weather8°C (47°F)49 mm (1.9 inches)84%moderate
May Weather11°C (53°F)88 mm (3.5 inches)77%very high
June Weather16°C (61°F)98 mm (3.8 inches)74%very high
July Weather17°C (63°F)92 mm (3.6 inches)72%very high
August Weather17°C (63°F)87 mm (3.4 inches)71%high
September Weather13°C (56°F)76 mm (3.0 inches)81%high
October Weather9°C (49°F)85 mm (3.3 inches)88%moderate
November Weather4°C (40°F)69 mm (2.7 inches)91%low
December Weather2°C (37°F)129 mm (5.1 inches)92%low

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