Climate Chart of Brussels, Belgium

Climate overview

Temperature

The temperature figures are monthly means, rather than daytime highs: the coolest monthly mean is 4.1 °C in January, while the warmest is 19.1 °C in July. Across the calendar-month means, the unweighted mean is 11.4 °C. These measures describe the broad temperature pattern but do not show the range between daytime and nighttime conditions or day-to-day fluctuations.

Rain

Mean daily rainfall is lowest at 1.26 mm/day in April, and reaches its highest monthly mean of 2.33 mm/day in October / November. The unweighted mean across the monthly means is 2.06 mm/day per day. These are daily averages, not monthly totals: they indicate relative rainfall amounts by month but do not tell you how often rain falls or guarantee a dry or wet day.

Sunshine

Mean daily sunshine duration is highest at 10.99 hours/day in June and lowest at 3.14 hours/day in December. The unweighted mean of the monthly figures is 7.43 hours/day per day. Sunshine duration can help describe the typical scope for daylight outdoor plans, but it is not the same as day length and does not promise clear skies on a particular date.

Snow

The highest monthly mean daily snowfall is 1.89 mm/day in January, while the unweighted mean across monthly means is 0.46 mm/day per day. These snowfall averages record amounts, not the number of snowy days or the depth and persistence of snow cover, so they cannot establish whether snow will be present during a visit.