Best Time to Visit Brussels
Recommended: May to Sep
When to go
May to September for warm evenings on the Grand Place and beer garden terraces, July and August being the busiest and most expensive. April, May, September, and October trade a few degrees for noticeably thinner crowds. Late November through December adds Christmas markets and a lit-up Grand Place worth the cold.
Month by month in Belgium
Brussels sits in Belgium, so the country's broader seasonal pattern applies. May-September brings the warmest weather and the longest daylight for canal walks and square-side terraces, with July-August busiest and priciest, especially in Bruges. April, May, September, and October balance mild weather with noticeably thinner crowds and are the best overall window. Christmas markets make late November-December worthwhile despite the cold and short days.