Bouillon Weather in May
May in Bouillon typically sees daytime highs of 18°C (64°F) and nighttime lows of 8°C (46°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Bouillon in May
Expect around 17 days of rain based on historical data, with 83 mm (3.3 in) average. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Bouillon in May
In May, Bouillon sees pleasant temperatures, with highs of 18°C (64°F). Nights drop to around 8°C (46°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 8°C (46°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Bouillon in May
Expect a lot of sunshine this month, with about 194 hours of sun. These sunny conditions add to the overall experience.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Bouillon.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belgium, check out our Bouillon's climate page.
Bouillon Temperature in May
Min Temperature
8°C (46°F)
Max Temperature
18°C (64°F)
Chance of Rain
55%
Precipitation
83 mm (3.3 in)
Rainy days
17 days
Sunshine
194 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bouillon typically rise from around 15°C (59°F) at the start of May to approximately 19°C (66°F) by the end. Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Bouillon in May
Browse day-by-day weather records for Bouillon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bouillon historical weather extremes in May
Based on 50 years of weather observations in Bouillon between 1976 and 2026, these are the recorded extremes.
- The hottest May day on record in Bouillon reached 30°C (86°F) (May 27, 2005).
- The coldest May day was on May 3, 1979, with a maximum of 5°C (41°F).
- The lowest overnight temperature recorded in May was -2°C (28°F) (May 3, 2021).
- Peak precipitation in May occurred on May 27, 1988, when 50 mm (2 in) of precipitation was measured.
Best Places in Belgium in May
Find out more about the weather in Belgium and which places have the best travel conditions in this month. See all of Belgium in May →
perfect weather
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tolerable
unpleasant
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What to Wear in Bouillon in May
For Bouillon in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Bouillon in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belgium, check out our Bouillon's climate page.
See the full Bouillon climate overview or explore weather in Belgium.
