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May Weather in Seilles, Belgium

Last updated: August 22, 2025

In May, the average temperature in Seilles, Belgium hovers around 13°C (56°F), making it a pleasantly mild time of year. However, temperatures can range from a chilly 0°C (33°F) to a warm 31°C (88°F). Visitors should also prepare for some wet days, as 67 mm (2.6 in) of precipitation typically falls over 14 days. With an average humidity of 82%, the air feels refreshingly crisp yet slightly damp.

May Temperature in Seilles

In May in Seilles, the average temperature is 13°C (56°F). Maximum temperatures can reach 31°C (88°F), while minimum temperatures can drop as low as 0°C (33°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack accordingly.

May Weather in Seilles: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Seilles, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seilles, May typically has an average temperature of 13°C (56°F), with highs reaching up to 31°C (88°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec384144495664666559534441
Data source: Temperature data for Seilles 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.

May Precipitation in Seilles

In Seilles in May, the precipitation amount is 67 mm (2.6 in) spread over 14 days.

May Precipitation Trends in Seilles

The chart displays monthly precipitation patterns in Seilles, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Seilles, May typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7174794167797986658459108
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Seilles

In Seilles in May, humidity is 82%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it feel much cooler than it is and creating a heavy atmosphere that can be exhausting for travelers.

May Average Humidity in Seilles

This chart illustrates the average monthly humidity levels in Seilles, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Seilles 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Seilles

In Seilles in May, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Seilles.

Maximum UV Index Levels in Seilles for May

The chart shows the monthly maximum UV Index (UVI) for Seilles in May, 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 May, the maximum UV index in Seilles typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234578875421
Data source: Seilles May 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 May Weather in Seilles Compares to Other Months

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

This table compares monthly weather conditions in Seilles, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)71 mm (2.8 inches)91%low
February Weather5°C (41°F)74 mm (2.9 inches)89%moderate
March Weather7°C (44°F)79 mm (3.1 inches)87%moderate
April Weather10°C (50°F)41 mm (1.6 inches)85%moderate
May Weather13°C (56°F)67 mm (2.6 inches)82%high
June Weather18°C (64°F)79 mm (3.1 inches)82%very high
July Weather19°C (66°F)79 mm (3.1 inches)80%very high
August Weather19°C (66°F)86 mm (3.4 inches)76%high
September Weather15°C (59°F)65 mm (2.6 inches)82%moderate
October Weather12°C (53°F)84 mm (3.3 inches)89%moderate
November Weather7°C (44°F)59 mm (2.3 inches)92%low
December Weather5°C (41°F)108 mm (4.3 inches)92%low

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