Cool
Average highs are around 17°C, so pack for cooler days.
May verdict
Belgium in May
Weather score36Poor
Poor for holiday weather
Average highs are around 17°C, so pack for cooler days. Sunshine averages 6.5h per day, enough for a balanced month. Rainfall averages 62mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
17°C
Rain
62mm
Sun
6.5h
Sea
7°C
Weather score
36
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 62mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.5h per day, enough for a balanced month.
Cool sea
Sea temperatures average 7°C, so the water can feel cool.
Map
Weather map
Compare Belgium with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May17°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
May62mm average rain
May is close to Belgium's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
May6.5 hours average sun
May is one of Belgium's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May7°C average sea
May is close to Belgium's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 11°C in this stretch, so swimming comfort is at its strongest.
Weather score
May36 weather score
May sits close to Belgium's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
