Forecasts for the next 36 hours (chart)
(These forecasts are usually updated daily)
Update 11-12-25 – 08h
(BMCB Multimodel: ICOND2 – AROMEHD – ALADIN)
Precipitation (next 36 hours)
• North of the Scheldt: 0–0.5 L/m²
• Between Scheldt and Sambre–Meuse: 0–0.5 L/m²
• South of Sambre–Meuse: 0–0.5 L/m²
Today
This morning
Local sunny breaks, mainly in Limburg, Liège and Namur. Elsewhere, 80–100 % low stratocumulus/stratus with locally persistent fog.
Wind: S, gusts 10–30 km/h, 5–15 km/h in Belgian Luxembourg.
This afternoon
Local bright spells in Limburg, Liège and Namur; elsewhere 80–100 % stratocumulus/stratus.
Wind: S, gusts 15–30 km/h.
Max temperatures: 13° at the coast, 9/11° inland, 6/8° in the High Ardennes.
This evening
Clear spells over Limburg and Liège; elsewhere 80–100 % stratocumulus/stratus/cirrus.
Wind: S/SE, gusts 15–35 km/h.
Tonight
Some breaks over Liège, otherwise 90–100 % stratus/stratocumulus/altostratus/cirrus with isolated light rain and fog in the High Ardennes.
Wind: S/SE, gusts 10–30 km/h.
Min temperatures: 8° at the coast, 8/9° inland, 4/8° south of the Sambre–Meuse axis.
Tomorrow
Morning
Some bright intervals over Liège and Limburg, elsewhere 90–100 % low cloud.
Wind: S, gusts 10–30 km/h.
Afternoon
Sunny spells mixed with cloud fields (70–100 % altostratus/cirrus).
Wind: S, gusts 10–30 km/h.
Max temperatures: 10° coast, 10/13° inland, 4/9° High Ardennes.
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National Thermal Indicator (Chart)
MULTIMODEL BMCB
(These forecasts are generally updated daily)
Update of 11 December 2025 – 10 AM
Over the next few days, the national thermal index is expected to fluctuate between +6 and +2 through 20 December. In practice, this will result in daytime highs generally ranging from 6 to 14°C during the milder periods, while cooler intervals will see maximum temperatures between 5 and 11°C.
Between 20 and 25 December, a slight decrease in the index is anticipated, with values dropping to between +1 and 0. Daytime temperatures will then align more closely with seasonal norms, typically ranging from 2 to 9°C.
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General Weather Evolution for the Next Days
Europe: Analysis & Forecast maps (6=>? days)
Update – 11 December 2025 – 3 pm
A 1027 hPa anticyclone positioned over the northwestern Balkans is sending very mild and seasonally stable air masses towards our regions via its western flank.
This anticyclonic pattern will persist for several more days. The core, expected to strengthen to 1028–1030 hPa, should remain over the northern Balkans until early next week. As a result, a predominantly southerly and unusually mild airflow will continue to influence the Benelux.
No significant rain-bearing disturbance is expected over the Benelux before the end of next week.
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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)