Brussels, Belgium skyline

Brussels Weather in January

Brussels, Belgium in January: how the month usually turns out, from 2006–2025 averages.

A typical January day in Brussels peaks at 6°C (42.8°F) and drops to 1.4°C (34.5°F) overnight; expect about 13 rainy days (70 mm in total) and 3.6 hours of sunshine daily.

Avg high

6°C (42.8°F)

Avg low

1.4°C (34.5°F)

Rainfall

70 mm (2.8 in)

Rainy days

13 days

Sunshine

3.6 h / day

Humidity

86%

January vs the rest of the year

January is the coolest month in Brussels, and the 4th wettest for rain.

MonthAvg highvs JanuaryRainRainy days
January6°C (42.8°F)—70 mm13
February7.6°C (45.7°F)+1.6°C (+2.9°F)62 mm12
March10.7°C (51.3°F)+4.7°C (+8.5°F)60 mm12
April14.7°C (58.5°F)+8.7°C (+15.7°F)41 mm10
May18.1°C (64.6°F)+12.1°C (+21.8°F)65 mm12
June21.4°C (70.5°F)+15.4°C (+27.7°F)70 mm11
July22.9°C (73.2°F)+16.9°C (+30.4°F)72 mm12
August22.6°C (72.7°F)+16.6°C (+29.9°F)69 mm12
September19.7°C (67.5°F)+13.7°C (+24.7°F)53 mm10
October15.4°C (59.7°F)+9.4°C (+16.9°F)70 mm12
November10.3°C (50.5°F)+4.3°C (+7.7°F)67 mm13
December7.1°C (44.8°F)+1.1°C (+2°F)74 mm13

What January feels like in Brussels

Winter bottoms out in January, the coolest month of Brussels's year. It is cold outside for most of the day; indoor breaks come as a relief. Little changes after sunset — nights are cold, only slightly below the daytime level. The air is damp, which makes cool temperatures feel colder, particularly in wind.

Rain in Brussels in January

January is persistently wet here: some rain falls on about one day in 2. Wet days average about 5.4 mm (0.2 in), enough to soak you without an umbrella. Across the year Brussels averages about 5.4 mm per rainy day, so January is typical.

Daylight and sunshine in January

Mid-month, Brussels gets 8 h 24 min of daylight, from sunrise near 8:39 am to sunset near 5:03 pm. Days are getting longer: 25 min more daylight than in mid-December. About 43% of daylight hours are sunny; in short, sun and cloud share the day.

How January compares to the rest of the year

January is the coolest month of the year in Brussels. Compared with December, afternoons are 1.1°C (2°F) cooler, with 4 mm less rain. From here it only gets warmer, starting with February. The next month's average high: 7.6°C (45.7°F).

Who January suits

  • Sightseeing: less ideal — it is cold for long walks.
  • Parks & outdoor: less ideal — too cool to sit outside for long.

Tips for visiting Brussels in January

Rain Protection

A compact umbrella and a light waterproof jacket.

Warm Layers

A proper winter coat, with gloves and a hat for early starts.

Quick questions

How warm is Brussels in January?

It feels cold: typical highs are 6°C (42.8°F), with lows near 1.4°C (34.5°F).

Does it rain a lot in Brussels in January?

Quite a lot — 70 mm spread over about 13 days.

What should I wear in Brussels in January?

Based on the averages: rain protection and warm layers. Evenings feel similar to the day, so the same clothes work from morning to night.

Is January or February better for visiting Brussels?

February, narrowly: it ranks #9 of 12 among Brussels's months, against #11 for the other. February is warmer and has fewer rainy days.

Is January a good time to visit Brussels?

Fair

Fair — chilly days, frequent rain (about 13 rainy days). Within Brussels's own year, January ranks #11 of 12 — one of the least comfortable months.

January in other Belgium cities

Warmer or drier places in January

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Brussels weather by month.