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May Weather in Jalhay, Belgium

Last updated: August 22, 2025

In May, the average temperature in Jalhay, Belgium hovers around 12°C (54°F). Expect a range of -1°C (30°F) as the minimum, while the maximum can reach up to 29°C (85°F). Be prepared for a bit of rain, with 91 mm (3.6 in) of precipitation spread across 15 days. Additionally, the average humidity is a comfortable 77%, making for a unique climate experience this time of year.

May Temperature in Jalhay

In May in Jalhay, the average temperature is 12°C (54°F). The maximum can reach 29°C (85°F), while the minimum can drop as low as -1°C (30°F). Make sure to pack layers to stay comfortable during your travels, as the weather can vary significantly!

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

The chart illustrates May temperature patterns in Jalhay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jalhay, May typically has an average temperature of 12°C (54°F), with highs reaching up to 29°C (85°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec343741475362636357504238
Data source: Temperature data for Jalhay 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 Jalhay

In Jalhay in May, the total precipitation amount is 91 mm (3.6 in) over a span of 15 days.

May Precipitation Trends in Jalhay

The chart displays monthly precipitation patterns in Jalhay, 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 Jalhay, May typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec10192110509110210391789471137
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Jalhay

In Jalhay in May, humidity is 77%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill that wraps around you, making your travels a little more uncomfortable and requiring you to dress in layers to stay warm and dry.

May Average Humidity in Jalhay

This chart illustrates the average monthly humidity levels in Jalhay, 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 Jalhay is approximately 77%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Jalhay

In Jalhay in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Jalhay.

Maximum UV Index Levels in Jalhay for May

The chart shows the monthly maximum UV Index (UVI) for Jalhay 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 Jalhay typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234589876421
Data source: Jalhay 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 Jalhay Compares to Other Months

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

This table compares monthly weather conditions in Jalhay, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)101 mm (4.0 inches)91%low
February Weather3°C (38°F)92 mm (3.6 inches)90%moderate
March Weather5°C (42°F)110 mm (4.3 inches)87%moderate
April Weather8°C (47°F)49 mm (1.9 inches)84%moderate
May Weather12°C (54°F)91 mm (3.6 inches)77%very high
June Weather17°C (62°F)102 mm (4.0 inches)74%very high
July Weather17°C (63°F)103 mm (4.1 inches)72%very high
August Weather17°C (63°F)91 mm (3.6 inches)71%high
September Weather14°C (57°F)78 mm (3.1 inches)81%high
October Weather10°C (51°F)94 mm (3.7 inches)88%moderate
November Weather5°C (42°F)71 mm (2.8 inches)91%low
December Weather3°C (38°F)137 mm (5.4 inches)92%low

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