Climate averages 1991–2020
Ixelles weather
in December.
A cold, moderately wet month: the 11th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Ixelles: daytime highs average 6.3°C and nights cool to about 1.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 74 mm of rain on roughly 13 days, which makes December a moderately wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 8 h 02 min on an average December day.
The nearest other city in this atlas is Brussels (2 km away). In December its highs average 6.6°C, about as warm as Ixelles, with 74 mm of rain.
Among the 18 cities listed in Belgium, Ixelles ranks joint 14th of 18 for the warmest December highs and joint 6th of 18 for the driest December (rainfall, lowest first). The mean December high of those 18 cities is 6.5°C; Ixelles is 0.2°C cooler than that mean.
From December to January, average highs fall by 0.5°C to 5.8°C, and monthly rainfall falls from 74 mm to 63 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ixelles climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.8°C1.1°C | 1.1°C | 63 | 12.0 | 8.58 h |
| February | 6.9°C1.0°C | 1.0°C | 58 | 11.4 | 10.010 h |
| March | 10.3°C2.7°C | 2.7°C | 56 | 11.8 | 11.812 h |
| April | 14.1°C5.1°C | 5.1°C | 48 | 11.4 | 13.814 h |
| May | 17.5°C8.8°C | 8.8°C | 62 | 12.2 | 15.515 h |
| June | 20.3°C11.8°C | 11.8°C | 65 | 11.5 | 16.416 h |
| July | 22.3°C14.0°C | 14.0°C | 70 | 12.2 | 16.016 h |
| August | 22.2°C13.9°C | 13.9°C | 73 | 12.1 | 14.615 h |
| September | 18.9°C11.4°C | 11.4°C | 54 | 10.5 | 12.713 h |
| October | 14.6°C8.4°C | 8.4°C | 58 | 11.2 | 10.811 h |
| November | 9.6°C4.7°C | 4.7°C | 64 | 11.9 | 9.09 h |
| December, selected | 6.3°C1.9°C | 1.9°C | 74 | 13.0 | 8.08 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Brussels in DecemberBelgium · 2 kmHigh 6.6°C · Low 2.2°C · 74 mm rain
- Anderlecht in DecemberBelgium · 4 kmHigh 6.7°C · Low 2.3°C · 74 mm rain
- Schaerbeek in DecemberBelgium · 4 kmHigh 6.6°C · Low 2.2°C · 74 mm rain
- Mechelen in DecemberBelgium · 23 kmHigh 6.6°C · Low 2.3°C · 70 mm rain
- Leuven in DecemberBelgium · 24 kmHigh 6.5°C · Low 2.1°C · 72 mm rain
- Aalst in DecemberBelgium · 26 kmHigh 6.7°C · Low 2.5°C · 71 mm rain
- La Louvière in DecemberBelgium · 41 kmHigh 6.1°C · Low 1.7°C · 79 mm rain
- Antwerp in DecemberBelgium · 43 kmHigh 6.5°C · Low 2.3°C · 74 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ixelles) is explained once on the Ixelles year overview and on the Sources, method and limits page.
Brussels and Anderlecht lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.