Brussels, Belgium

Brussels sits in an ocean-tempered climate in Belgium, and the 2015–2024 weather record gives its sunshine a clear shape: the July peak reaches a 94/100 sun score, with daytime highs around 23°C — a solid base for a city break.

The year runs from average lows of 1°C in January to highs of 23°C in August. The wet–dry contrast is modest: 44% rain-day odds in January against 33% in July. Note that average highs never reach 24°C in any month — pack for mild weather rather than hot.

Season by season (on the northern calendar), spring brings 15°C highs with 37% rain-day odds, summer 23°C at 34%, autumn 15°C at 40%, and winter 7°C at 42%. In short: plan around summer if you can, keep spring as the fallback, and go into winter with managed expectations (its season score is 43).

Best months to visit Brussels

Our month-by-month scoring puts July first (94/100), with June (92) and August (92) close behind. Anything in May–September clears our 70-point reliability bar. The month to avoid on pure weather odds is December (41/100).

Put against its 73 ocean peers in July, it lands below the group median for sunshine, ahead of 45% of them.

Month-by-month breakdown for Brussels → · More destinations for July →

Right now the 15-day outlook shows 6 mostly-clear days (under 40% cloud) and none with real rain risk, with temperatures between 0°C and 19°C — which is how Brussels earns its current 60/100 sun score.