Brussels weather in May
“Mild and bright — an underrated time to visit.”
Roughly 12 rainy days across the month, on average.
In may, Brussels settles into its kind, mild rhythm. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 18°C (65°F), cooling to 9°C after sunset. Rainfall is moderate — around 12 rainy days spread through the month. Long days of sunshine reward early starts.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for Brussels in May
- •A light layer for cool mornings and evenings
- •A compact travel umbrella — one you'll actually carry
- •A merino base layer for the cold evenings
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Brussels in May
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Brussels in May — FAQ
Q01Is May a good time to visit Brussels?
Is May a good time to visit Brussels?
Yes — it is a good time to visit, with pleasant, comfortable weather. In May, Brussels averages a high of 18°C (65°F) and a low of 9°C (48°F), with 61mm of rainfall across roughly 12 rainy days.
Q02What is the average temperature in Brussels in May?
What is the average temperature in Brussels in May?
The average high temperature in Brussels during May is 18°C (65°F), with an average low of 9°C (48°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive).
Q03How many rainy days does Brussels have in May?
How many rainy days does Brussels have in May?
Brussels averages approximately 12 rainy days in May, with a total monthly rainfall of about 61mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Brussels in May?
What should I pack for Brussels in May?
For Brussels in May, pack layered clothing for changing temperatures, a merino base layer for evenings, a compact umbrella or waterproof jacket, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month.
Q05How crowded is Brussels in May?
How crowded is Brussels in May?
Tourist crowds in Brussels during May are typically moderate — shoulder season, a sweet spot between crowds and weather. Consider this when planning accommodation — prices track crowd levels closely.