May Weather in Zaventem, Belgium

Last updated: August 21, 2025

May in Zaventem, Belgium presents a striking contrast in weather, featuring a maximum temperature peaking at 32°C (89°F) and a minimum dropping to 1°C (34°F). The average settles at a mild 14°C (57°F), creating a dynamic climate experience. However, May also brings an average precipitation of 57 mm (2.3 in) spread over 12 days, contributing to a relative humidity level of 82%. This combination of warm days and frequent rainfall invites a diverse array of seasonal activities while reminding residents to stay prepared for sudden weather changes.

May Temperature in Zaventem

In Zaventem, Belgium, May marks a transition into warmer weather, with temperatures beginning to embrace the joys of spring. The month opens with a chilly minimum of 1°C (34°F), but quickly warms up to a comfortable average of 14°C (57°F). Notably, the maximum temperature can soar to an impressive 32°C (89°F), showcasing a significant leap from the cooler months preceding it. This upward trend in temperatures not only heralds the arrival of longer days but also invites locals and visitors alike to enjoy outdoor activities as nature blossoms. With this delightful mix of mild mornings and warm afternoons, May truly highlights the seasonal shift, setting the stage for the vibrant summer months ahead.

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

The chart illustrates May temperature patterns in Zaventem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Zaventem, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec404245505765666660554542
Data source: Temperature data for Zaventem 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 Zaventem

May in Zaventem, Belgium sees an average precipitation of 57 mm (2.3 in), spread over approximately 12 days. This places May's rainfall right in the middle, following a notably drier April with only 35 mm (1.4 in). As spring transitions into summer, the weather patterns show a slight uptick in moisture, though not as pronounced as the peak levels reached in the warmer months of July and August. This month serves as a refreshing prelude to the wetter season, striking a balance that sustains the blooming scenery while also keeping the lush landscapes vibrant. The consistency in rainy days hints at May's role as a bridge between the milder, drier days of spring and the more unpredictable weather patterns of the summer ahead.

May Precipitation Trends in Zaventem

The chart displays monthly precipitation patterns in Zaventem, 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 Zaventem, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec626768355764717450775388
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Zaventem

As spring transitions into summer, May in Zaventem, Belgium, experiences a notable drop in humidity, settling at 82%. This marks a continuation of the gradual decline seen from the peak winter months of 91% in January to 85% in April. Interestingly, the moderate humidity levels in May are echoed in June, suggesting a stable weather pattern as the region moves towards the warmer season. With July and August poised for even lower humidity levels at 80% and 76%, respectively, it becomes clear that the weather is not just becoming warmer, but also drier, promising a refreshing escape from the damp chill of winter.

May Average Humidity in Zaventem

This chart illustrates the average monthly humidity levels in Zaventem, 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 Zaventem is approximately {2}%, 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 Zaventem

As we transition into May in Zaventem, Belgium, the UV Index rises significantly, reaching 7, categorized as high. This shift indicates a clear trend towards stronger sun exposure, shortening the time it takes for skin to burn down to 25 minutes. Compared to the milder UV ratings of earlier months, May presents a more pressing need for sun protection. As the warmth of spring arrives, it's an ideal time to enjoy outdoor activities while remaining cautious about UV exposure. Make sure to check the forecast and stay informed about daily readings on the Zaventem UV Index to protect your skin this season!

Maximum UV Index Levels in Zaventem for May

The chart shows the monthly maximum UV Index (UVI) for Zaventem 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 Zaventem typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Zaventem 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.

May Sunshine in Zaventem

May shines brightly in Zaventem, Belgium, as it welcomes a significant leap in sunshine hours, reaching 397 hours—a clear indication that spring is in full swing. Following the gradual ascent from 120 hours in January, sunshine hours steadily accumulate, peaking in May. This month not only stands out as a transition from the cooler days of early spring but also sets the stage for the summer months ahead, where June and July maintain a robust average of over 400 hours of sun. The warmth and light of May herald a vibrant season, preparing residents and visitors alike for the blossoming beauty of summer, while September's drop to 320 hours gently reminds us of the impending shift back to the cooler, cozier months of autumn.

Monthly Sunshine Duration in Zaventem: May Highlighted

The May sunshine duration represents the total number of hours Zaventem experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec120h203h272h348h397h400h411h383h320h241h191h143h
Data source: Zaventem May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Zaventem During May

In Zaventem, Belgium, May sees a 33% chance of sunny weather, which marks a slight dip from the increasing trend observed in the earlier months of the year. From a mere 10% in January, the likelihood of sunshine gradually rises, peaking at 47% in April, only to retreat slightly in May. This fluctuation highlights the unpredictable nature of early spring weather in the region. Transitioning into summer, the chances stabilize around 34% in June and July, suggesting that while May may not boast the highest likelihood of sun, it certainly ushers in the promise of brighter days ahead.

Percentage of Sunny Days in May in Zaventem

The chart illustrates the percentage of sunny days in Zaventem throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Zaventem experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec11%31%39%47%33%34%34%31%34%31%24%17%
Data source: Zaventem May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Zaventem in May

In Zaventem, Belgium, the transition from winter's gloom to the vibrant days of summer is beautifully marked by the increasing daylight duration throughout the year. Starting with 8 hours of daylight in January, residents eagerly anticipate the gradual lengthening of days, reaching 10 hours in February and 11 hours in March as spring unfolds. By April, daylight stretches to a delightful 13 hours, paving the way for May, when the sun shines for an impressive 15 hours. This peak continues into June with a glorious 16 hours of daylight, the highest of the year. As summer wanes, daylight starts to taper off, with July and August providing 15 and 14 hours, respectively, before falling back to 12 hours by September. The cycle completes itself as daylight diminishes to 10 hours in October, with winter approaching again—finally leaving residents with just 8 hours in November and 7 hours in December. This rhythmic dance of daylight not only marks the seasons but also imbues Zaventem with a sense of renewal and anticipation as nature awakens.

Average Daylight Hours in Zaventem for May

The chart illustrates the variation in daylight duration in Zaventem throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 27m10h11h 55m13h 52m15h 34m16h 27m15h 59m14h 27m12h 34m10h 38m8h 53m7h 58m
Data source: Zaventem daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Zaventem

In Zaventem, Belgium, the month of May brings a refreshing average wind speed of 4.1 m/s (9 mph), a slight uptick from the preceding months, particularly April’s gentle breezes of 3.3 m/s. This increase signals a shift in the seasonal winds, offering a vibrant atmosphere as spring reaches its zenith. Notably, while May maintains a favorable wind speed, it falls in line with the trend observed in January and October, both also boasting 4.1 m/s. This pattern suggests that as the year progresses, Zaventem experiences notable variability in wind speeds, with the spring months generally fostering a more invigorating environment compared to the calmer, drier summer months ahead.

Average May Wind Speed in Zaventem

The chart displays monthly wind speed patterns in Zaventem, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.33.83.34.1 m/s2.73.23.22.94.13.23.9
Data source: Zaventem May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Zaventem Compares to Other Months

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

The weather in May and January presents a striking contrast in both temperature and conditions. May features a more moderate climate, with temperatures ranging from a chilly 1°C (34°F) at night to a warm 32°C (89°F) during the day, averaging around 14°C (57°F). With 57 mm of precipitation over approximately 12 days, humidity levels are relatively high at 82%, but the overall feel is much milder. In contrast, January is characterized by colder temperatures, with a minimum of -6°C (21°F) and a maximum reaching only 14°C (58°F), averaging just 4°C (40°F). Although January sees slightly more precipitation at 62 mm over 11 days, the higher humidity of 91% adds to the chill in the air. For a detailed look at January conditions, you can explore Zaventem weather in January.

The weather in May and February presents a stark contrast. In May, temperatures range from a chilly 1°C (34°F) at night to a warm 32°C (89°F) during the day, with an average of 14°C (57°F). February, on the other hand, sees much colder conditions, with minimum temperatures plummeting to -9°C (16°F) and a maximum of 19°C (66°F), averaging just 6°C (42°F). Precipitation levels are relatively similar, with May receiving 57 mm (2.3 in) over 12 days and February slightly higher at 67 mm (2.6 in), also over 12 days. Notably, February has a higher humidity level at 89%, compared to May’s 82%. For a detailed view of February weather, check out Zaventem weather in February.

In comparing the weather between May and March, May tends to be significantly warmer, with average temperatures rising to 14°C (57°F) and capable of reaching a maximum of 32°C (89°F), while March features an average temperature of only 7°C (46°F) and a high of 23°C (74°F). Precipitation levels are slightly lower in May, totaling 57 mm (2.3 in) over about 12 days, compared to March's 68 mm (2.7 in) spread over 13 days. Additionally, May has a lower humidity level at 82%, while March experiences a slightly higher humidity at 87%. For a more detailed look at the weather patterns, you can check Zaventem weather in March.

In comparing the weather of May to that of April, May tends to be noticeably warmer, with average temperatures rising to 14°C (57°F) and maximums reaching 32°C (89°F), compared to April's average of 10°C (51°F) and a maximum of 28°C (82°F). Precipitation also increases in May, with 57 mm (2.3 inches) falling over 12 days, while April sees less rainfall, totaling 35 mm (1.4 inches) over just 7 days. However, both months experience high humidity levels, with May averaging 82% and April slightly higher at 85%. For a detailed look at April's weather, visit Zaventem weather in April.

In May, the weather tends to start off cooler with minimum temperatures dipping to around 1°C (34°F), while average highs reach up to 32°C (89°F). The month experiences a total precipitation of 57 mm (2.3 in) spread over about 12 days, all accompanied by consistent humidity levels around 82%. In contrast, June brings warmer conditions with minimum temperatures rising to 8°C (46°F) and average highs reaching 33°C (92°F). Although June sees slightly more precipitation at 64 mm (2.5 in) over just 9 days, the humidity remains constant at 82%. For more detailed insights on the weather, you can check Zaventem weather in June.

May weather typically sees a wider variation in temperatures, ranging from a chilly minimum of 1°C (34°F) to a warm maximum of 32°C (89°F), with an average of 14°C (57°F). Precipitation is moderate, totaling around 57 mm (2.3 in) over 12 days, and humidity levels are relatively high at 82%. In contrast, July enjoys milder nights with a minimum of 8°C (47°F) and higher daytime temperatures peaking at 39°C (103°F), averaging 19°C (67°F). Although July has slightly more rainfall at 71 mm (2.8 in) over 10 days, the humidity remains comparable at 80%. For more details, you can check Zaventem weather in July.

In comparing the weather between May and August, we see notable differences in temperature and precipitation. May typically experiences a broader temperature range, with lows around 1°C (34°F) and highs reaching up to 32°C (89°F), while August's temperatures are milder, ranging from a minimum of 8°C (47°F) to a maximum of 36°C (96°F). Precipitation is slightly higher in August, totaling 74 mm (2.9 in) over about 13 days, compared to May's 57 mm (2.3 in) across 12 days. Humidity levels are also somewhat lower in August at 76%, compared to the higher 82% average in May. For more specific details on August weather conditions, you can refer to Zaventem weather in August.

In May, the weather experiences a broader range of temperatures, from a chilly 1°C (34°F) at night to a warm 32°C (89°F) during the day, with an average temperature of 14°C (57°F). The month also sees around 57 mm (2.3 in) of precipitation over approximately 12 days, contributing to the high humidity level of 82%. In contrast, September offers slightly warmer nights with a minimum of 4°C (39°F) and a similar maximum of 33°C (93°F), averaging at 16°C (60°F). With a bit less rainfall at 50 mm (2.0 in) and precipitation occurring on about 9 days, the humidity remains consistent at 82%. For more details on September's weather, you can refer to Zaventem weather in September.

May and October present distinct weather characteristics, showcasing the transition between spring and autumn. In May, temperatures range from a minimum of 1°C (34°F) to a maximum of 32°C (89°F), with an average of 14°C (57°F). The month experiences approximately 57 mm (2.3 in) of precipitation across 12 days, accompanied by a humidity level of 82%. In contrast, October features a slightly higher minimum temperature of 2°C (35°F) and a lower maximum of 26°C (79°F), with an average temperature similar to May at 13°C (55°F). This month sees increased precipitation, totaling around 77 mm (3.0 in) over the same number of days, and a higher humidity of 89%. Therefore, while both months share similarities in terms of the number of rainy days, October tends to be cooler and wetter. For more details, you can check Zaventem weather in October.

May and November both experience moderate temperatures and similar precipitation levels, but they differ significantly in warmth and humidity. In May, temperatures range from a chilly 1°C (34°F) at night to a warm 32°C (89°F) during the day, with an average of 14°C (57°F) and 12 days of rainfall amounting to 57 mm (2.3 in). The humidity is relatively high at 82%, contributing to a vibrant spring atmosphere.

Conversely, November is much cooler, with temperatures dipping as low as -3°C (28°F) and peaking at 19°C (66°F), averaging 7°C (46°F). The month sees slightly less precipitation than May, with 53 mm (2.1 in) over 10 rainy days, but it also experiences higher humidity at 92%. For more specifics about November weather, visit Zaventem weather in November.

May and December present stark contrasts in weather conditions. In May, temperatures range from a pleasant 1°C (34°F) at night to a warm 32°C (89°F) during the day, averaging around 14°C (57°F). The month sees an average precipitation of 57 mm (2.3 in) over 12 days, with humidity levels sitting at 82%. Conversely, December experiences colder temperatures, with a minimum of -5°C (23°F), an average of 6°C (42°F), and a maximum of 15°C (60°F). This month also features more rainy days, with 16 days of precipitation totaling 88 mm (3.5 in), alongside even higher humidity at 92%. For more specific details about December weather, you can visit Zaventem weather in December.

Compare Zaventem's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Zaventem

May in Zaventem brings a refreshing change, as temperatures rise significantly compared to the chill of earlier months. With highs reaching a warm 32°C (89°F), this month marks the transition into a more vibrant season. However, the average temperature maintains a comfortable 14°C (57°F), allowing for pleasant outdoor activities. Despite an increase in temperature, May is not without its showers, experiencing about 57 mm (2.3 in) of precipitation over roughly 12 days. The humidity level sits at a relatively high 82%, reminding residents that spring is still very much in the air. For more detailed insights into the climate dynamics of this charming town, visit Zaventem Climate.