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September Weather in Sinaai, Belgium

Last updated: August 22, 2025

In September, the average temperature in Sinaai, Belgium reaches a comfortable 16°C (60°F), with fluctuations ranging from a cool 4°C (40°F) to a warm 32°C (90°F). Expect a moderate precipitation amount of 57 mm (2.2 in) over about 10 days, and experience a high average humidity of 82%.

September Temperature in Sinaai

In September in Sinaai, 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 Sinaai: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sinaai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sinaai, 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).
JanFebMarAprMayJunJulAugSepOctNovDec404245505764666660554643
Data source: Temperature data for Sinaai 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 Sinaai

In Sinaai in September, the precipitation amount is 57 mm (2.2 in) over a span of 10 days.

September Precipitation Trends in Sinaai

The chart displays monthly precipitation patterns in Sinaai, 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 Sinaai, September typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec626468406368717557845491
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sinaai

In Sinaai 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 Sinaai

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

In Sinaai 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 Sinaai.

Maximum UV Index Levels in Sinaai for September

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

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

This table compares monthly weather conditions in Sinaai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)62 mm (2.5 inches)91%low
February Weather6°C (42°F)64 mm (2.5 inches)89%low
March Weather7°C (46°F)68 mm (2.7 inches)87%moderate
April Weather10°C (51°F)40 mm (1.6 inches)85%moderate
May Weather14°C (57°F)63 mm (2.5 inches)82%high
June Weather18°C (65°F)68 mm (2.7 inches)82%very high
July Weather19°C (66°F)71 mm (2.8 inches)80%very high
August Weather19°C (66°F)75 mm (3.0 inches)76%high
September Weather16°C (60°F)57 mm (2.2 inches)82%moderate
October Weather13°C (55°F)84 mm (3.3 inches)89%moderate
November Weather8°C (46°F)54 mm (2.1 inches)92%low
December Weather6°C (43°F)91 mm (3.6 inches)92%low

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