May Weather in Bouillon, Belgium

Last updated: August 21, 2025

Experience the whimsical charm of Bouillon, Belgium in May, where temperatures can soar to a sunny 30°C (87°F), while the average settles at a refreshing 13°C (55°F). With lows dipping to a chilly 0°C (32°F), this month brings a delightful variety of weather. Expect about 79 mm (3.1 in) of precipitation spread over 13 days, contributing to the lush greenery of the region. The air carries an inviting humidity of 82%, creating a vibrant atmosphere perfect for exploring Bouillon's stunning landscapes and rich history.

May Temperature in Bouillon

In May, Bouillon, Belgium experiences a delightful transition into warmer weather, with temperatures rising to a maximum of 30°C (87°F). The month starts with a chilly minimum of 0°C (32°F) but quickly warms, reaching an average of 13°C (55°F), making it one of the more comfortable times of the year. This notable increase in temperature reflects the longer daylight hours and the gradual departure from the winter chill that characterizes earlier months. As spring unfolds, residents and visitors alike can enjoy outdoor activities in the mild climate, setting the stage for a vibrant summer ahead. The noticeable trend of rising temperatures from April to May signals the warmth that pervades the subsequent months, culminating in some of the year's hottest days in July and August.

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

The chart illustrates May temperature patterns in Bouillon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bouillon, 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).
JanFebMarAprMayJunJulAugSepOctNovDec363943495564656559524339
Data source: Temperature data for Bouillon generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Bouillon

In May, Bouillon, Belgium experiences a moderate level of precipitation, with 79 mm (3.1 in) of rain falling across approximately 13 days. This amount reflects a slight increase from April's notably dry spell of just 46 mm (1.8 in), signaling a transition towards the wetter months ahead. Interestingly, while the spring breeze begins to usher in warmth, May’s rainfall remains relatively balanced compared to the preceding months, falling in line with the overall trend of greater precipitation as the year progresses. With summer on the horizon, it is no surprise that the rainfall continues to play a vital role in nurturing the vibrant landscape of Bouillon.

May Precipitation Trends in Bouillon

The chart displays monthly precipitation patterns in Bouillon, 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 Bouillon, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec92909946797873777010280146
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Bouillon

In May, Bouillon experiences a noticeable dip in humidity, with levels averaging 82%. This marks a gradual decline from the 91% recorded in January and follows a steady decrease through the spring months. As the year progresses, humidity reaches its lowest point in July at 80%, suggesting a trend towards drier conditions during the summer. Interestingly, June maintains the same humidity level as May, indicating a stable atmospheric state before the summer heat fully sets in. This gradual reduction highlights the transition from the damp chill of winter to the more pleasant warmth of late spring, setting the stage for the vibrant landscapes of Bouillon in summer.

May Average Humidity in Bouillon

This chart illustrates the average monthly humidity levels in Bouillon, 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 Bouillon is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%84%83%83%80%76%81%88%92%93%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Bouillon

As the days grow longer and sunnier in Bouillon, Belgium, May marks a significant shift in the UV Index, rising to 8, placing it in the very high exposure category. With a burn time of just 15 minutes, this increase demands heightened sun safety awareness compared to the earlier months. In contrast to April's 6, where the risk was high but manageable, May’s UV Index propels outdoor enthusiasts to take precautions more seriously. Following May, the UV Index remains steady at 8 throughout the summer months of June, July, and August, signaling consistent high UV exposure during this period. To stay informed about the changing UV trends and what they mean for your sun safety, explore more at Bouillon UV Index.

Maximum UV Index Levels in Bouillon for May

The chart shows the monthly maximum UV Index (UVI) for Bouillon 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 Bouillon typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234688886421
Data source: Bouillon 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 Bouillon

As spring transitions into summer in Bouillon, Belgium, the month of May shines brightly, boasting an impressive 387 hours of sunshine. This radiant month marks a notable uptick from the preceding April (342 hours), continuing the trend of increasing daylight that invigorates the community and its lush surroundings. Following this sunny peak, June and July maintain this momentum with 404 hours, showcasing a delightful stretch of warm, sun-kissed days. In contrast, the sunshine begins to wane with the arrival of autumn, dropping significantly in October to 245 hours. This gradual decline serves as a gentle reminder of the seasonal cycles, while the abundant sunshine in May paints a vibrant portrait of spring's full bloom, inviting both locals and visitors to relish the outdoors before the year’s end.

Monthly Sunshine Duration in Bouillon: May Highlighted

The May sunshine duration represents the total number of hours Bouillon 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.
JanFebMarAprMayJunJulAugSepOctNovDec107h183h248h342h387h404h404h384h317h245h178h118h
Data source: Bouillon May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bouillon During May

As spring transitions into summer, Bouillon, Belgium exhibits an intriguing pattern in sunny weather likelihood throughout the months. After a promising increase in sun chances from 9% in January to a peak of 52% in April, May sees a dip to 31%, suggesting a whimsical return of clouds ahead of the summer months. Interestingly, this figure parallels both June and July, which hover around similar percentages, hinting at the possibility of overcast days as warmer weather approaches. Despite this fluctuation, May remains a delightful month, balancing longer daylight hours with a moderate chance of sunshine, encouraging outdoor activities amidst an unpredictable yet charming spring climate.

Percentage of Sunny Days in May in Bouillon

The chart illustrates the percentage of sunny days in Bouillon 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 Bouillon experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec9%30%42%52%31%31%34%27%38%32%21%16%
Data source: Bouillon May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bouillon in May

As spring gives way to summer in Bouillon, Belgium, May marks a delightful transition with 15 hours of daylight, showcasing the region's increasing luminosity. The trend of longer days becomes particularly striking as we move from the 11 hours in March and 13 hours in April to this vibrant peak in May. Following this bright crescendo, June boasts the longest days at 16 hours, inviting locals and visitors alike to embrace the outdoors. However, as summer wanes into autumn, daylight begins to ebb, highlighting the cyclical nature of the seasons. By October, daylight diminishes to 10 hours, gradually tapering off to the 8 hours characteristic of winter months. This rhythmic pattern of changing daylight not only enriches Bouillon’s natural beauty but also enhances the community's seasonal activities and celebrations.

Average Daylight Hours in Bouillon for May

The chart illustrates the variation in daylight duration in Bouillon throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 38m10h 6m11h 55m13h 47m15h 24m16h 14m15h 47m14h 21m12h 33m10h 42m9h 2m8h 10m
Data source: Bouillon daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Bouillon

In Bouillon, Belgium, the month of May sees a refreshing increase in wind speed, with an average of 4.3 m/s (10 mph), mirroring February's breezy conditions. This uptick marks a noticeable contrast from the calmer breezes of April, which averaged just 3.5 m/s (8 mph). As spring unfolds, May's winds invigorate the landscape, setting the stage for summer. Following May, the wind speed tends to decrease, dipping to 2.7 m/s (6 mph) in June, suggesting a gradual transition to the more temperate summer months. Overall, May stands out as a pivotal month, embodying a blend of freshness and momentum that beautifully heralds the season ahead.

Average May Wind Speed in Bouillon

The chart displays monthly wind speed patterns in Bouillon, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.04.33.93.54.3 m/s2.73.53.32.73.93.13.8
Data source: Bouillon May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Bouillon Compares to Other Months

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

May and January present quite contrasting weather conditions. In May, temperatures typically range from a brisk 0°C (32°F) at night to a warm 30°C (87°F) during the day, averaging around 13°C (55°F). The month sees about 79 mm of precipitation over 13 days, with humidity averaging 82%. In contrast, January experiences colder temperatures, with nighttime lows reaching -8°C (18°F) and daytime highs capping at 12°C (54°F), averaging only 2°C (36°F). While January has slightly higher precipitation at 92 mm over the same number of days, it also boasts a bit more humidity at 91%. For a more detailed look at January conditions, check out Bouillon weather in January.

In comparing the weather of May and February, it's evident that May offers much milder temperatures, with average highs reaching up to 30°C (87°F) compared to February’s maximum of only 19°C (66°F). While February experiences colder temperatures with a minimum of -9°C (16°F), May has a more comfortable minimum of 0°C (32°F). Additionally, February has slightly higher precipitation levels at 90 mm (3.5 in) over 12 days, whereas May sees 79 mm (3.1 in) of rain across 13 days. The humidity is also notable, peaking at 89% in February compared to 82% in May. For more details on February weather, you can check Bouillon weather in February.

In comparing the weather patterns of May and March, we see a notable contrast in temperatures and precipitation. May experiences a significantly warmer range, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 30°C (87°F) and an average of 13°C (55°F). In contrast, March is cooler, with temperatures starting from a minimum of -11°C (12°F) and peaking at 22°C (72°F), averaging around 6°C (44°F). Precipitation levels are also different; May records 79 mm (3.1 in) across 13 days, while March sees slightly more rainfall at 99 mm (3.9 in) over 16 days. Humidity levels are relatively high in both months, with May at 82% and March at 86%. For more detailed weather insights, you can check Bouillon weather in March.

In comparing the weather patterns of April and May, May generally exhibits significantly warmer temperatures, with a minimum of 0°C and an average of 13°C, climbing to a maximum of 30°C. In contrast, April experiences lower temperatures, ranging from a minimum of -3°C to an average of 9°C, peaking at 26°C. Additionally, May sees a marked increase in precipitation, totaling 79 mm over 13 days, compared to April's 46 mm across 9 days. Interestingly, while humidity levels are quite similar, with April at 84% and May at 82%, the overall warmer temperatures in May indicate a shift toward the summer season. For more specific details on how April weather behaves, you can check Bouillon weather in April.

In comparing the weather between May and June, we see an overall warming trend as temperatures rise from a minimum of 0°C (32°F) and an average of 13°C (55°F) in May to a minimum of 5°C (42°F) and an average of 18°C (64°F) in June. The maximum temperatures also show an increase, with June reaching up to 32°C (90°F) compared to May's peak of 30°C (87°F). Despite this rise in temperature, both months experience similar levels of precipitation, with May receiving 79 mm (3.1 in) and June slightly less at 78 mm (3.1 in), both spread over 13 days. Humidity remains consistent at 82% for both months, indicating that while June is warmer, the overall feel of the weather remains relatively humid. For more specific information on the weather conditions in June, you can visit Bouillon weather in June.

In May, temperatures exhibit a wider range, with minimums dipping to 0°C (32°F) and maximums reaching up to 30°C (87°F), while averages hover around 13°C (55°F). The month sees significant precipitation at 79 mm (3.1 in) over 13 days, accompanied by high humidity levels of 82%. In contrast, July enjoys warmer temperatures with minimums of 7°C (46°F), averages around 18°C (66°F), and sizzling maximums that can soar to 39°C (102°F). Precipitation is slightly lower at 73 mm (2.9 in) over just 11 days, coupled with a slightly decreased humidity of 80%. For more specific insights, you can check Bouillon weather in July.

May and August exhibit notable differences in weather patterns, making each month feel distinct. In May, temperatures range from a chilly 0°C (32°F) to a warm 30°C (87°F), with an average of 13°C (55°F). This month also experiences considerable precipitation, totaling 79 mm (3.1 in) over approximately 13 days, contributing to a high humidity level of 82%.

In contrast, August presents a warmer climate, with temperatures ranging from 5°C (41°F) to a scorching 36°C (97°F) and an average temperature of 18°C (65°F). While the amount of precipitation is slightly lower at 77 mm (3.0 in) across 14 days, the humidity is more comfortable at 76%. For an overview of specific weather conditions in August, you can check Bouillon weather in August.

May and September present distinct weather patterns as the seasons transition. In May, temperatures range from a chilly minimum of 0°C (32°F) to a warm maximum of 30°C (87°F), with an average of 13°C (55°F). This month sees a fair amount of precipitation, totaling 79 mm (3.1 in) over about 13 days, combined with a high humidity level of 82%. Conversely, September experiences slightly warmer temperatures, with min, avg, and max values of 3°C (38°F), 15°C (59°F), and 33°C (92°F) respectively. Precipitation in September is marginally lower at 70 mm (2.8 in) occurring over 10 days, coupled with a similar humidity level of 81%. For more detailed weather insights, you can visit Bouillon weather in September.

May and October present distinct weather patterns, showcasing the transition between spring and autumn. In May, temperatures range from a minimum of 0°C (32°F) to a maximum of 30°C (87°F), with an average of 13°C (55°F). The month experiences 79 mm (3.1 in) of precipitation over approximately 13 days, accompanied by a humidity level of 82%. In contrast, October sees cooler temperatures, with a minimum of 0°C (32°F), an average of 11°C (52°F), and a maximum of 24°C (76°F). Precipitation increases to 102 mm (4.0 in) also over 13 days, combined with a higher humidity level of 88%. For more detailed insights on October weather in a specific location, you can visit Bouillon weather in October.

May and November present contrasting weather patterns. May boasts warmer temperatures, with averages around 13°C (55°F) and a maximum reaching up to 30°C (87°F), making it a vibrant spring month. In contrast, November experiences cooler conditions, with average temperatures dropping to 6°C (43°F) and a maximum of 18°C (66°F). Both months see similar rainfall, averaging around 80 mm (3.2 in) over approximately 13 days, but November's higher humidity of 92% contributes to a more damp and chilly atmosphere. For more detailed insights, check out Bouillon weather in November.

In May, the weather is typically warmer, with temperatures ranging from a cool 0°C (32°F) at night to a pleasant 30°C (87°F) during the day, averaging around 13°C (55°F). This month experiences moderate humidity at 82%, along with 79 mm (3.1 in) of precipitation spread over 13 days. In contrast, December is much colder, with minimum temperatures dropping to -5°C (24°F) and maximums only reaching 14°C (58°F), averaging 4°C (39°F). The humidity rises to a notable 93%, and December sees increased rainfall with 146 mm (5.8 in) over 19 days. For a more detailed look at the December climate, visit Bouillon weather in December.

Compare Bouillon's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Bouillon

May in Bouillon marks a delightful transition into warmer weather, standing out from the chillier months that precede it. As temperatures rise, you can expect a significant shift in both warmth and overall ambiance, with an average of 13°C welcoming the bloom of spring. However, the month also brings its fair share of rainfall, with approximately 79 mm spread over about 13 days, making it a refreshing yet occasionally wet time to explore the picturesque surroundings. The 82% humidity can enhance the lushness of the landscape, inviting nature enthusiasts to experience the vibrant scenery at its best. For a detailed overview of year-round weather patterns, check out Bouillon Climate.