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May Weather in Belgium, United States

Last updated: June 24, 2025

In Belgium, United States, the average temperature in May hovers around 8°C (47°F), providing a crisp atmosphere. Visitors can expect a range from a chilly 1°C (34°F) to a mild 18°C (65°F). During this month, precipitation amounts to 126 mm (5.0 in), spread across approximately 12 days, contributing to the 78% average humidity that defines the season. Perfect for those who appreciate a refreshing climate!

May Temperature in Belgium

In May in Belgium, the average temperature is 8°C (47°F). The maximum can reach 18°C (65°F), and the minimum can be as low as 1°C (34°F). Be sure to pack both warm layers and lighter clothing for your travels, as the weather can vary significantly throughout the day.

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

The chart illustrates May temperature patterns in Belgium, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belgium, May typically has an average temperature of 8°C (47°F), with highs reaching up to 18°C (65°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec262533394758687065533932
Data source: Temperature data for Belgium 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 Belgium

In Belgium in May, the precipitation amount is 126 mm (5.0 in) over the course of 12 days.

May Precipitation Trends in Belgium

The chart displays monthly precipitation patterns in Belgium, 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 Belgium, May typically receives around 126 mm (5.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec616069107126968069931265859
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Belgium

In Belgium in May, humidity is 78%. With an average temperature of 8°C (47°F), this humidity feels like a chilly embrace, making travel invigorating yet damp, as the cool air wraps around you, emphasizing the need for layers to stay comfortable while exploring.

May Average Humidity in Belgium

This chart illustrates the average monthly humidity levels in Belgium, 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 Belgium is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Belgium

In Belgium in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Belgium.

Maximum UV Index Levels in Belgium for May

The chart shows the monthly maximum UV Index (UVI) for Belgium 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 Belgium typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Belgium 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 Belgium Compares to Other Months

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

This table compares monthly weather conditions in Belgium, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)61 mm (2.4 inches)85%low
February Weather-4°C (26°F)60 mm (2.4 inches)85%moderate
March Weather1°C (33°F)69 mm (2.7 inches)85%moderate
April Weather4°C (39°F)107 mm (4.2 inches)85%very high
May Weather8°C (47°F)126 mm (5.0 inches)78%very high
June Weather14°C (58°F)96 mm (3.8 inches)80%very high
July Weather20°C (68°F)80 mm (3.1 inches)78%very high
August Weather21°C (70°F)69 mm (2.7 inches)76%very high
September Weather18°C (65°F)93 mm (3.7 inches)79%high
October Weather12°C (53°F)126 mm (5.0 inches)83%moderate
November Weather4°C (39°F)58 mm (2.3 inches)88%moderate
December Weather0°C (33°F)59 mm (2.3 inches)81%low

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