Brussels · May
Run in the morning.
Cool month: average high 65°F, low 48°F. Expect 17 rain days — plan around the radar. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
65° / 48°F
Humidity
72%
Rain days
17/mo
Wind
12 mph
What May feels like in Brussels
Sunrise
05:53
Mid-month average
Sunset
21:25
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Brussels in May
The kit for May in Brussels: a long-sleeve or light jacket for the first mile, a water-resistant cap or jacket on standby.
May vs the surrounding months
vs April
+7° avg high
+3 rain days
Brussels in April →
May
65°F avg high
17 rain days
Best: morning
vs June
-7° avg high
+2 rain days
Brussels in June →
Frequently Asked Questions
What is the best time of day to run in Brussels in May?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in Brussels in May?+
Average high 65°F, average low 48°F.
How does May compare to surrounding months in Brussels?+
Compared to April (avg high 58°F), May is warmer. Compared to June (avg high 72°F), May is cooler.
Does it rain often in Brussels in May?+
Expect about 17 measurable rain days in May, on average.