Summers in Brussels are mild, with average temperatures between 15 and 25 °C (59 and 77 °F). The warmest month is July, with an average temperature of 18.5 °C (65.3 °F).
Winters in Brussels are cool and cloudy, with average temperatures between 1 and 5 °C (34 and 41 °F). The coldest month is January, with an average temperature of 2.5 °C (36.5 °F). Snow is not uncommon in Brussels, but it does not usually stay on the ground for long.
Spring and autumn in Brussels are mild and changeable, with temperatures between 5 and 15 °C (41 and 59 °F). The best time to visit Brussels is in the spring (March to May) or autumn (September to November), when the weather is mild and there are fewer tourists.