Weather in Belgium in May

May in Belgium is mild enough that walking is the default. This is a city-break month more than a sea-holiday month.

A country pin in May is a warning: one region of Belgium will not match another. Use a city page if you already know where you are going. Compared with July and January, May sits in the middle of Belgium's year.

Belgium
Average temp
14°C

9–18°C

Rainfall
61 mm

Showers likely

Sunshine
6.3 h

hours per day

What to expect

Daytime

Mild afternoons in Belgium are the prize in May. You can eat outside on the good days. You still want something for the breeze.

This is walking weather. Shade is useful, not essential the way it is in the hot months. A long outdoor day is a reasonable plan.

Rain

Mixed skies in Belgium in May. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.

Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.

Evening

Evenings are cooler. A layer helps after sunset.

What to pack

  • Rain jacket

  • A layer for cooler evenings

Average weather in Belgium

TemperatureRainfall

Source: MeteostatPeriod: 1991-2020Checked: 28 Aug 2026265 places covered

Similar weather in May

Other destinations whose May averages sit close to this one.

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FAQs about Belgium

Climate averages for Belgium, 1991–2020.

The best time to visit Belgium is between May and October, the most comfortable stretch of the year on these averages.

July is the hottest month, with an average around 19°C.

August is the wettest month, with about 90 mm of rain.

No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.