Weather in Brussels - 7-day forecast, rain, wind

Weather in Brussels today and 7-day forecast

Belgium. Live weather data from Open-Meteo. Updated on page load.

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Climate in Brussels

Brussels has a temperate oceanic climate similar to Amsterdams, with mild summers (average highs of 22 degrees Celsius) and mild winters (average lows of 1 degree). Annual thermal range is small.

Annual rainfall is around 850 mm over more than 140 rainy days. Atlantic depressions follow one another and westerly/south-westerly winds dominate. Snow is scarce but can disrupt traffic when it arrives.

Winter fog is frequent in the Senne basin, reducing visibility for aviation at Brussels South Charleroi and Zaventem. Atlantic storms can deliver gusts above 100 km/h.

Best time to visit is May to September. Use the hourly forecast, rain probability and wind before planning the Grand Place, the Atomium or a museum route at Cinquantenaire.

The climate of Brussels, with thirty years of data

Brussels shares the mild, humid oceanic climate of the rest of the Benelux, but sits somewhat further inland and higher than the Belgian coast, so its winters are a notch colder. The feature that most defines its year is cloud: there are few clear days, and rain arrives in frequent, light episodes rather than heavy downpours.

The year at a glance

The warmest month is August, with a mean maximum of 22.5 °C, and the coldest January, with minima averaging 1.3 °C. About 826 mm fall a year, spread over 156 days of appreciable rain, peaking in August and at its lowest in April. There are 43 days of frost a year and 4 with the maximum above 30 °C.

Month by month

Monthly means over 30 years at Brussels. ERA5-Land reanalysis, 1995 to 2024.
Monthly mean	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Maximum (°C)	6.0	7.5	10.5	14.2	17.8	20.8	22.4	22.5	19.4	15.2	9.9	6.5
Minimum (°C)	1.3	1.7	2.9	5.2	9.0	12.1	14.1	14.2	11.7	9.0	4.9	2.2
Rain (mm)	70	67	62	52	71	73	78	81	61	67	69	75
Rain days	13.2	12.8	13.5	12.2	13.8	12.1	13.9	13.8	11.3	12.5	13.2	13.8

The extremes of the series

Across these 30 years the highest temperature was 37.6 °C, on 25 July 2019, and the lowest -13.4 °C, on 2 January 1997. These are reanalysis values, not those of an observatory: they are useful for placing the magnitude, not as an official record.

Where these numbers come from

From ERA5-Land, the reanalysis produced by the European Centre for Medium-Range Weather Forecasts, downloaded from the Copernicus Climate Data Store under a CC-BY licence: hourly temperature and precipitation between 1995-01-01 and 2024-12-06, 30 complete years, in the 50.90°, 4.40° cell. It is a grid of about 9 km covering land only.

The Spanish cities on this site use AEMET’s official normals; there is no single equivalent for ten different countries, so the same global series is used for all of them. That has an advantage: the figures are comparable with one another, computed by the same method over the same period. And a limitation: a reanalysis cannot see the urban heat island, so in the centre of a large city the real minima are usually somewhat higher than those in the table.