Mons Weather in May
May in Mons sees daytime temperatures around 19°C (66°F) and lows of 9°C (48°F) at night. With around 72 mm (2.8 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Mons in May
Typically, about 17 days will experience rainfall, with an average of 72 mm (2.8 in) for the month. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Mons in May
May in Mons brings typical temperatures with highs around 19°C (66°F) and lows of 9°C (48°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Mons in May
You can expect a moderate amount of sunlight, with approximately 189 hours. This means a pleasant mix of sun and overcast.If you prefer dry days with pleasant temperatures, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 Mons's climate page.
Mons Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
19°C (66°F)
Chance of Rain
56%
Precipitation
72 mm (2.8 in)
Rainy days
17 days
Humidity
73% *
Sunshine
189 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mons typically rise from around 15°C (59°F) at the start of May to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 10°C (50°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 Mons in May
Browse day-by-day weather records for Mons spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mons historical weather extremes in May
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Mons.
- Mons recorded its highest May temperature of 31°C (88°F) on May 27, 2005.
- Mons experienced its chilliest May day on May 11, 2010, reaching only 7°C (45°F).
- Mons registered its coldest May night on May 3, 1981, with temperatures dropping to -1°C (30°F).
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
pleasant
tolerable
unpleasant
poor
What to Wear in Mons in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Mons 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 Mons's climate page.
Temperature Rainfall Sunshine Humidity
See the full Mons climate overview or explore weather in Belgium.
