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Draft data. Times, fares and step counts are desk estimates awaiting field checks. Unknown times stay unknown. How we verify

When to go · Brussels

Brussels in May

Great month. Mild and green; good month.

Key facts

Verdict
Great
Temperature
18° / 9°
average high / low
Rain days
13
Crowds
Medium
Belgium overall
Prices
Medium
Belgium overall

Verdict

GreatVoykit month rating for Brussels

Mild and green; good month.

Weather in May

Long-term averages
  • BrusselsHighs around 18 °C, lows around 9 °C, rain on about 13 days
  • Flanders, Brussels and the coast, Belgium · Bruges, Ghent, Antwerp, Brussels, Ostendbest weather

    Mild, cloudy and damp; summers around 22–25 °C with occasional heatwaves. December Christmas markets offset dark afternoons.

Spring season

Longer days, the Iris Festival and, some years, the Zinneke Parade.

Watch: Rain showers can arrive with little warning.

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Iris Festival check

    Around 8 May · Citywide

    Regional holiday marking the Brussels-Capital Region; some closures and events.

  • Zinneke Parade check

    Every second year, spring · Streets across the centre

    A large community parade with costumes and music; road closures on the route.

Crowds and prices

Crowds · Belgium overall
Medium
Prices · Belgium overall
Medium

Belgium overall: Mild; Brussels Jazz Weekend and outdoor terraces; long weekends fill Bruges.

What to pack

  • A warm layer for the evenings
  • A rain jacket or umbrella and shoes that dry fast

Build the full packing list for your trip →

Across Belgium in May →