Forecasts for the next 36 hours (chart)
(These forecasts are usually updated daily)
Update 10-12-25 – 8am
BMCB Multimodel: ICOND2 – AROMEHD – ALADIN
Precipitation (next 36 hours)
• North of the Scheldt: 0 L/m²
• Between Scheldt and Sambre–Meuse: 0 L/m²
• South of Sambre–Meuse: 0–1 L/m²
Today – Detailed forecast
This morning
A few last light showers in Gaume. Elsewhere, very cloudy with 90–100% stratocumulus–altostratus–cirrus, with some breaks in Western Flanders.
Wind: SW, gusts 20–40 km/h.
This afternoon
Very cloudy (90–100%), but more sunny intervals (70–90%) across the northwest.
Wind: SW, gusts 20–40 km/h.
Max temperatures: around 14°C at the coast, 10–14°C inland, 9–10°C over the High Ardennes.
This evening
Clear spells west of the Meuse (0–60% cloud cover); still 70–90% cloud cover east of the river.
Wind: W/SW, gusts 10–30 km/h.
Tonight
Variable cloud cover (0–60%) with local fog south of the Sambre–Meuse line.
Wind: SW, gusts 5–25 km/h.
Min temperatures: 7°C at the coast, 4–7°C inland, 1–6°C south of Sambre–Meuse.
Tomorrow
Morning
Sunny in many regions but with low stratus and local fog over South Hainaut, Namur, South Liège and Belgian Luxembourg.
Wind: S to SW, gusts 5–25 km/h.
Afternoon
Sunny spells in Liège and northern Luxembourg (BE); elsewhere persistent 70–100% low stratus or stratocumulus.
Wind: S, gusts 5–25 km/h.
Max temperatures: around 11°C at the coast, 8–10°C inland, 4–7°C in the High Ardennes.
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National Thermal Indicator (Chart)
MULTIMODEL BMCB
(These forecasts are generally updated daily)
Update 10 December 2025 – 10:00
The national thermal indicator is expected to fluctuate between +6 and +2 until 21 December. This corresponds to daytime highs generally ranging from 6 to 13°C on the milder days, and 5 to 11°C during cooler periods.
Between 21 and 24 December, a slight decrease in this indicator is anticipated, bringing it down to levels between +2 and +1. Daytime temperatures will then return to more seasonal values, with highs typically between 2 and 10°C.
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General Weather Evolution for the Next Days
Europe: Analysis & Forecast maps (6=>? days)
Update 10 December 2025 – 12:00
A high-pressure system of 1026 hPa is gradually establishing itself over Central Europe. It will stabilise the air mass over our region while slightly drying it out. This air, arriving from eastern France and the Alpine area, will remain unusually mild for the season.
During the night from Friday to Saturday, a (very) weak cold front will cross the country. At the same time, a new high-pressure cell of 1029–1030 hPa will move into north-eastern France on Saturday before shifting towards Central Europe and the north-western Balkans.
This pattern will allow a mild southerly flow to persist over our region until early next week. A deterioration is likely, however, with the arrival of a rain-bearing front during the day on Tuesday.
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Forecast for the coming days (Chart)
Multimodel BMCB ( OPERATIONAL + ENSEMBLES ICON-GFS-ECMWF-AIFS-GCGFS )
Forecast of the range of temperatures, precipitations + general type of weather in Belgium
(These forecasts are usually updated daily)
Update December 9, 2025 – 12 PM
Thursday, 11 December
No rainfall expected.
Temperatures remain remarkably mild, with 3–9°C early and 6–12°C in the afternoon.
A cloudy sky, though with pleasant sunny breaks, except over Belgian Luxembourg where clouds persist.
Friday, 12 December
Rainfall: 0–3 L/m²
Min 3–9°C • Max 5–11°C
Very mild conditions. The sky becomes heavily overcast, and light, scattered rain develops, spreading during the night.
Saturday, 13 December
Rainfall: 1–10 L/m²
Min 3–9°C • Max 6–12°C
The day starts fairly sunny, but overnight clouds return with light showers.
Southerly winds strengthen across the west and centre, with gusts of 40–60 km/h.
Sunday, 14 December
Rainfall: 0–1 L/m²
Min 1–7°C • Max 6–12°C
Still very mild. Dry weather, with occasional sunshine.
Monday, 15 December
Rainfall: 0 L/m²
Min 4–10°C • Max 7–13°C
Persistent mild air, with spells of sunshine.
🔭 Likely Trend
Tuesday, 16 December
Rainfall: 0–1 L/m²
Min 3–9°C • Max 7–13°C
Mostly dry, unusually mild.
Wednesday, 17 December
Rainfall: 1–4 L/m²
Min 2–8°C • Max 6–12°C
Little rainfall, continuing exceptional mildness.
Thursday, 18 December
Rainfall: 2–10 L/m²
Min 2–8°C • Max 5–11°C
Fairly mild, with occasional light rain.
Friday, 19 December
Rainfall: ≈10 L/m²
Min 2–8°C • Max 5–11°C
Periods of light to moderate showers.
Saturday, 20 December
Rainfall: 2–10 L/m²
Min 1–7°C • Max 5–11°C
Still quite mild, with weak precipitation.
Sunday, 21 December
Rainfall: 4–5 L/m²
Min 0–6°C • Max 3–9°C
Temperatures return to seasonal values with very light precipitation.
Monday, 22 December
Rainfall: 3–5 L/m²
Min 1–7°C • Max 3–9°C
Fairly mild, with scattered very light rain.
Tuesday, 23 December
Rainfall: ≈3 L/m²
Min –1–5°C • Max 3–9°C
Seasonal weather, with occasional very light precipitation.
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METEOCONSULT
BENELUX:
Weather Outlook for 3-4 weeks
Update – 5 December 2025
🗓 Period from 19 to 28 December — Christmas Week
Recent atmospheric modelling points to a calmer, high-pressure-dominated pattern during Christmas week. Under winter anticyclones, fog and low clouds are likely to be widespread, occasionally limiting sunshine. Temperatures would gradually decrease but remain slightly above seasonal norms.
🗓 Week from 29 December to 4 January — New Year Week
The high-pressure system may shift northward, introducing a more continental and progressively colder airflow. The weather would stay calm and dry, with frequent morning fog and low clouds, but with more afternoon bright spells. Temperatures would return to near-seasonal values, especially south of the Sambre–Meuse line.
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Weather Outlook for 3 months
Update 26-11-25
December 2025: a rather mild start to winter, no clear precipitation signal
Temperatures: positive anomaly of +0.5°C to +1.0°C. Few lasting cold spells; alternating polar incursions and milder phases, similar to November. High confidence in above-average temperatures.
Precipitation: near normal, locally slightly below average in the north and east. Low confidence.
General pattern: prevailing west–southwest flow, alternating unsettled periods and calmer phases. Limited lowland snow, but regular snowfall at higher elevations.
January 2026: more contrast, unsettled and generally mild
Temperatures: continued thermal surplus (+0.5°C to +1.0°C). Some short-lived wintry episodes possible due to continental cooling. Probability of mild conditions dominating: > 60%.
Precipitation: slight excess (+5% to +20%) in western, southern and upland areas; elsewhere near normal. Medium confidence.
General pattern: renewed active Atlantic flow with successive disturbances, risk of windstorms and notable snowfall in mid-mountains. In lowlands, snow remains scarce and brief.
February 2026: more variable, closer to seasonal norms
Temperatures: near normal to slightly above (0 to +0.5°C), with large scenario spread and potential for brief cold spells. Low confidence.
Precipitation: around normal, possibly slightly wetter in the east and uplands. Low confidence.
General pattern: alternating high-pressure phases and unsettled returns. Colder outbreaks linked to a weakened polar vortex remain possible, particularly late in the month.
Winter 2025–2026: summary
A slightly milder-than-average winter with a mean anomaly of +0.5°C to +1.0°C. Precipitation near seasonal norms overall — drier in December, wetter in January.
Dominant scenario: frequent Atlantic influence, regular disturbances, cold spells generally short-lived. La Niña and a potentially weakened polar vortex may still promote sharper wintry episodes, especially in January, without altering the overall mild signal.
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Update to BMCB Multimodel – since 1 October 2025
from ICON (replace location left above )
from ECMWF (replace location left above)