Weather in Brussels
Summers are very humid and often rainy. It doesn’t get crazy hot, but it does get very humid so it can feel warmer than it is. Even in June, I usually had layers as the day progressed from cool and cloudy to warm. Check out the World Meteorological Association Website for current temps.
Because of the rain, it helps to have waterproof shoes and a light waterproof jacket. During the winter, it can snow but it usually doesn’t last, making the ground slushy and wet. It usually rains more here than it does in London, so be ready.