Last updated: August 21, 2025
In Uccle, Belgium, May unveils a dynamic climate with temperatures ranging from a maximum of 31°C (88°F) to a minimum of 1°C (33°F), creating a striking contrast that highlights the month’s variability. The average temperature hovers around 13°C (57°F), setting the stage for a mix of warm days and chilly evenings. However, this period also witnesses a fair share of moisture, with 58 mm (2.3 in) of precipitation spread across 12 days, contributing to a humidity level of 82%. Whether you’re reveling in the warmth or bracing for a drizzle, May in Uccle provides a quintessential spring experience marked by its unpredictable charm.
As May descends upon Uccle, Belgium, the weather transforms into a delightful prelude to summer. With minimum temperatures averaging around 1°C (33°F) and soaring to a maximum of 31°C (88°F), this month showcases a significant warming trend compared to the preceding spring months. The average daily temperature reaches a comfortable 13°C (57°F), inviting locals and visitors alike to enjoy outdoor activities amidst blooming flora. May’s temperatures reflect a stark contrast to the winter chill, heralding the approach of sunnier days and vibrant life, making it a perfect time for picnics and strolls in the lush parks of Uccle.
In May, Uccle experiences a moderate precipitation total of 58 mm (2.3 in) over approximately 12 days of rain, striking a balance between the drier spells of April and the wet months that follow. This month's rainfall contributes to the lush greenery typical of early spring, showcasing nature's reawakening. Notably, while May's precipitation is less than the preceding month of April—which saw only 37 mm (1.5 in)—it remains consistent with the overall early summer pattern, where rainfall tends to increase again from June onwards. As the seasons shift, Uccle's weather reflects a fascinating transition, making May a pivotal month in the region's climatic rhythm.
As spring gives way to summer, May in Uccle, Belgium, brings a refreshing drop in humidity, settling at 82%. This marks a pleasant shift from the higher levels seen in the earlier months; January starts the year with a lofty 91% humidity, gradually decreasing through the spring. The trend showcases a gentle decline each month, with April's 85% setting the stage for May's comfortable levels. Interestingly, this humidity continues to hold steady into June, hinting at a balanced atmosphere just before the summer heat intensifies. As the year progresses, humidity levels are expected to fluctuate, but May often offers a reprieve, making it a desirable time to enjoy the outdoors in Uccle.
As spring shifts into summer, May in Uccle, Belgium, brings a noticeable increase in UV exposure, with a UV Index rising to 7, categorized as high. This marks a shift from the moderate levels seen in the previous months, such as April’s 5. In May, the burn time shortens to just 25 minutes, highlighting the need for caution while enjoying the outdoors. As the days warm and the sun shines brighter, it's essential to protect your skin from the intensified rays that signal the approach of summer. By the time we reach June, the UV Index peaks at 8, indicating very high exposure. Staying informed about these trends is crucial for safe sunbathing; for more details, visit Uccle UV Index.
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May shines brightly in Uccle, Belgium, marking the peak of spring with an impressive 394 hours of sunshine. This is a notable rise from the 346 hours recorded in April, highlighting the increasing warmth and longer days as the season progresses. Following the upward trend, June continues to bask in sunlight with 398 hours, while July reaches the summer pinnacle at 406 hours. The months preceding May, particularly January and February, are in stark contrast, with only 121 and 200 hours of sunshine, respectively. As the year unfolds, Uccle experiences a consistent increase in daylight, with a gradual decline toward the end of summer, making May a delightful prelude to the sun-drenched months ahead.
In Uccle, Belgium, May offers a 33% chance of sunny weather, a slight dip from the preceding month of April, which boasts a more promising 50%. This trend indicates that while the days are longer and warmer, the typically capricious nature of spring means residents should remain prepared for variability. Interestingly, as the season transitions into summer, sunny probabilities stabilize at similar levels in June and July, hovering around 33%. Thus, while May may not deliver as much sun as April, it still provides a reasonable opportunity to enjoy the outdoors before the summer peaks.
In Uccle, Belgium, the transition into May brings a noticeable surge in daylight, promising a delightful 15 hours of sunshine each day. As winter fades into spring, daylight duration steadily increases, rising from a mere 8 hours in January to an invigorating 11 hours in March and reaching 13 hours by April. May heralds a seasonal peak as the days stretch longer, providing a vibrant backdrop for outdoor activities and community gatherings. Following this, the daylight begins to wane slightly in the summer months, settling at 16 hours in June before tapering off in July and August. The gradual decrease in light hours as the year progresses emphasizes a rhythmic ebb and flow of nature, creating a beautiful cycle that residents eagerly anticipate. Overall, May stands out as a luminous month that encapsulates the essence of spring's blossoming vitality.
In Uccle, Belgium, the winds in May bring a refreshing gust, maintaining an average speed of 4.4 m/s (10 mph), consistent with the cooler months of January and February. This month's breezy conditions invigorate the early summer atmosphere, encouraging outdoor activities and gatherings. As spring transitions into summer, the wind speeds exhibit a noticeable downward trend from April’s 3.4 m/s (8 mph) to a dip in June, which sees the lowest average at 2.8 m/s (6 mph). However, May stands out as a bridge between these two fluctuations, providing a perfect blend of mildness and invigorating air, making it an ideal time to embrace the beauty of Uccle’s blossoming landscape.
Weather in Uccle varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Uccle, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present starkly contrasting weather conditions. In May, temperatures range from a cool 1°C (33°F) to a warm 31°C (88°F), with an average of 13°C (57°F). This month experiences 58 mm (2.3 in) of precipitation over approximately 12 days, coupled with a relatively high humidity of 82%. In contrast, January is much colder, with temperatures dipping as low as -7°C (20°F) and peaking at 14°C (57°F), yielding an average of just 4°C (39°F). This month sees slightly more precipitation at 65 mm (2.5 in) also over 12 days, but with even higher humidity levels at 91%. The differences highlight May's warmth and gradual transition into summer, compared to January's frigid chill. For more details, check Uccle weather in January.
May and February present contrasting weather patterns. In May, temperatures range from a minimum of 1°C (33°F) to a maximum of 31°C (88°F), with an average temperature of 13°C (57°F) and relatively lower precipitation at 58 mm (2.3 in) over approximately 12 days. The humidity in May sits at 82%, providing a warm and pleasant spring atmosphere. In contrast, February experiences much colder temperatures, with a minimum of -8°C (17°F) and a maximum of 19°C (66°F), averaging just 5°C (42°F). Precipitation is slightly higher at 69 mm (2.7 in) over the same number of days, and humidity peaks at 89%, contributing to a chillier and wetter winter climate. For more detailed insights on February weather, you can visit Uccle weather in February.
May generally offers much warmer temperatures compared to March, with average highs reaching 31°C (88°F) in May compared to only 23°C (74°F) in March. While both months experience a fair amount of precipitation, May's 58 mm (2.3 in) over 12 days contrasts with March's slightly higher 70 mm (2.8 in) spread over 14 days. Humidity levels remain relatively high in both months, with May at 82% and March slightly higher at 87%. For a more detailed look at March weather patterns, you can check Uccle weather in March.
In comparing the weather between April and May, it is evident that May generally offers warmer temperatures and a wider range of conditions. While April has a minimum temperature of -4°C (26°F) and an average of 10°C (50°F), May starts with a milder minimum of 1°C (33°F) and an average of 13°C (57°F). The maximum temperature in May also reaches a more pleasant 31°C (88°F) compared to April's high of 27°C (80°F).
April experiences 37 mm (1.5 in) of precipitation over 8 days, while May sees increased rainfall at 58 mm (2.3 in) across 12 days. Interestingly, humidity remains relatively high in both months, with April's humidity at 85% slightly edging out May's 82%. For a more detailed look at April's weather, you can refer to Uccle weather in April.
In comparing the weather between May and June, it's evident that June experiences a notable increase in minimum and average temperatures, with a minimum of 7°C (44°F) and an average of 18°C (65°F) compared to May's lows of 1°C (33°F) and an average of 13°C (57°F). Both months exhibit similar maximum temperatures, with June slightly warmer at 32°C (91°F) versus May's 31°C (88°F). Precipitation in June is marginally higher at 66 mm (2.6 in) over 9 days, compared to 58 mm (2.3 in) over 12 days in May. Humidity remains consistent at 82% for both months. For a more detailed look at Uccle's weather patterns in June, visit Uccle weather in June.
In May, temperatures range from a cool 1°C (33°F) to a warm 31°C (88°F), with an average of 13°C (57°F). The month experiences 58 mm (2.3 in) of precipitation over approximately 12 days, contributing to a high humidity level of 82%. In contrast, July sees much warmer temperatures, with minimums of 8°C (46°F) and maximums soaring to 39°C (102°F), averaging around 19°C (66°F). Although July receives slightly more precipitation at 71 mm (2.8 in) over 11 days, the humidity is slightly lower at 80%. For more detailed information, you can check Uccle weather in July.
May and August exhibit notable differences in weather patterns. In May, temperatures range from a chilly minimum of 1°C (33°F) to a pleasant average of 13°C (57°F), with peaks reaching up to 31°C (88°F). The month typically sees around 58 mm (2.3 inches) of precipitation over 12 days, accompanied by high humidity levels at 82%. In contrast, August boasts a milder minimum temperature of 8°C (46°F) and a warmer average of 19°C (66°F), with highs soaring to 36°C (97°F). August also experiences increased rainfall, totaling 80 mm (3.2 inches) across 14 days, but with slightly lower humidity at 76%. For more detailed insights, you can check Uccle weather in August.
May and September exhibit mild weather patterns, although they show some notable differences. In May, temperatures range from a minimum of 1°C (33°F) to a maximum of 31°C (88°F), averaging around 13°C (57°F). The month is characterized by 58 mm (2.3 in) of precipitation spread over 12 days, with humidity consistently high at 82%. In contrast, September features slightly warmer nights with a minimum temperature of 4°C (39°F) and a higher average of 15°C (60°F), while the maximum can reach 33°C (91°F). Precipitation is marginally lower at 55 mm (2.2 in) over 9 days, maintaining the same humidity level of 82%. Overall, both months provide a blend of warmth and moisture, suitable for various outdoor activities. For more detailed insights, check out Uccle weather in September.
May and October present notable differences in weather patterns. In May, temperatures range from a minimum of 1°C (33°F) to a maximum of 31°C (88°F), with an average of 13°C (57°F) and relatively moderate precipitation of 58 mm (2.3 in) over 12 days. Contrastingly, October sees a cooler temperature range, with a minimum of 1°C (34°F) and a maximum of 25°C (77°F), averaging around 12°C (54°F). The month also experiences slightly higher precipitation at 76 mm (3.0 in) across 13 days and increased humidity, averaging 89%. For more details on October weather, visit Uccle weather in October.
May and November exhibit notable differences in temperature and humidity. In May, temperatures range from a minimum of 1°C (33°F) to a maximum of 31°C (88°F), with an average of 13°C (57°F), while November presents a cooler climate with temperatures ranging from -2°C (28°F) to 18°C (65°F) and an average of 7°C (45°F). Both months see similar precipitation levels, with May receiving 58 mm (2.3 in) over 12 days and November slightly less at 57 mm (2.2 in) across 11 days. Interestingly, November's humidity is higher at 92%, compared to May's 82%, making the late autumn month feel more damp and chilly. For a closer look at November's weather patterns, you can visit Uccle weather in November.
May and December present notably different weather patterns. In May, temperatures can range from a chilly 1°C (33°F) at night to a warm 31°C (88°F) during the day, averaging around 13°C (57°F). The month sees moderate precipitation at 58 mm (2.3 in) over approximately 12 days, with humidity at a comfortable 82%. In contrast, December experiences colder temperatures, with a minimum of -5°C (24°F) and a maximum of 15°C (59°F), averaging just 5°C (42°F). Precipitation increases to 93 mm (3.7 in) over 17 days, accompanied by higher humidity at 92%. For more detailed information on December weather, visit Uccle weather in December.
In Uccle, May heralds a transition into summer, showcasing a delightful blend of warmth and mildness that sets it apart from the chillier months preceding it. With temperatures reaching a maximum of 31°C (88°F), the month offers a refreshing escape from winter's grasp, while the average temperature of 13°C (57°F) provides a comfortable atmosphere for outdoor activities. However, May's 82% humidity and 58 mm (2.3 in) of rainfall over approximately 12 days serve as a reminder of the region's dynamic weather patterns. As the landscape blooms and days grow longer, May stands out as a vibrant month of renewal, perfectly captured by the essence of Uccle Climate.