Forecasts for the next 36 hours
(chart)
(These forecasts are usually updated daily)
Weather Update – 31 December 2025 | 7 AM
Sources: BMCB multimodels (ICOND2 – AROME HD – ALADIN)
🌧️ Expected rainfall (next 36 hours)
Rainfall totals will remain generally modest, with a clear north-to-south gradient:
- North of the Scheldt: 0 to 1 L/m²
- Between the Scheldt and the Sambre–Meuse line: 0.5 to 1.5 L/m²
- South of the Sambre–Meuse line: 1 to 4.5 L/m²
🌥️ Today: variable conditions, locally wintry at higher elevations
Morning
The sky will be variable, alternating between clouds and brighter spells. However, cloud cover will be more extensive over the Campine and western Flanders, where a few light showers may occur locally. Light snow showers are also possible over the northern Ardennes.
Wind: variable or west to south-west, turning north-west along the coast, with gusts of 5 to 20 km/h.
Afternoon
Conditions remain variable, though cloud cover increases over Limburg, Liège Province, Walloon Brabant and Namur.
Around Liège, a light shower may turn wintry, with sleet or snow above 200–300 metres.
Wind: west to south-west, north-west along the coast, gusts 15–35 km/h, locally 35–40 km/h in western Flanders.
Maximum temperatures: around 6°C along the coast, 2–7°C inland, and –1 to +1°C in the High Ardennes.
Evening
Skies stay changeable, becoming cloudier from central to eastern areas. Patches of fog may develop over the Ardennes.
Wind: south-west, but west to north-west at the coast, gusts 10–30 km/h, locally 30–40 km/h near the coast.
Night
Fog patches, sometimes dense, are expected mainly in southern Namur Province and Luxembourg Province.
Skies remain cloudy to overcast, though clear spells persist over both Flanders.
Wind: south-west, west along the coast, gusts 20–40 km/h, reaching 40–50 km/h on the coast.
Minimum temperatures: around 4°C on the coast, 0–2°C inland, and –3 to 0°C south of the Sambre–Meuse line.
🌦️ Tomorrow
Morning
Mostly cloudy to overcast, with some sunny intervals still possible over Flanders.
Wind: south-west, strong gusts of 40–60 km/h.
Afternoon
Conditions remain unsettled, with variable to heavy cloud.
Showers of rain or hail are expected mainly north of the Sambre–Meuse line and over Liège Province.
In the northern Ardennes, sleet or snow is possible above 200–400 metres.
Wind: south-west, west to north-west along the coast, gusts 40–60 km/h.
Maximum temperatures: about 6°C along the coast, 1–6°C inland, and –1 to 0°C in the High Ardennes.
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National Thermal Indicator
(Chart)
MULTIMODEL BMCB
(These forecasts are generally updated daily)
Update: 31 December 2025 | 10 a.m.
Weather trend – a persistent winter signal
According to the latest projections, the national thermal index is expected to remain negative over the next fifteen days, confirming the persistence of a firmly wintery pattern.
From day to day, the index is likely to fluctuate between –1 and –5, resulting in consistently low daytime temperatures. During the least cold spells, maximum temperatures should range between –2 and +5°C, while the coldest days will struggle to rise above –4 to +3°C.
Minimum temperatures will show a wide range, generally lying between –7 and +2°C nationwide. However, during calm and clear nights, radiative cooling may become more pronounced. In valleys south of the Sambre–Meuse line, temperatures could then locally drop to –7 to –13°C, significantly reinforcing the wintry feel.
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General Weather Evolution for the Next Days
Europe: Analysis & Forecast maps (6=>? days)
Update – 31 December 2025 | 11 AM
As the New Year begins, an active low-pressure system will deepen over southern Scandinavia, reaching a central pressure of around 973 hPa. This setup will steer increasingly unstable polar air southwards across the southern North Sea and into our regions.
In the days that follow, the depression will gradually fill over the Baltic Sea, while continuing to maintain a rather cold and occasionally unsettled pattern across the country until next weekend.
A gradual stabilisation is nevertheless expected around 6 January, suggesting a slow easing of this winter-driven atmospheric regime.
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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)
Weather Update –31 December 2025 | 1 PM
Summary of the expected weather evolution
based on the BMCB multimodel (operational models and ICON – AIFS – ECMWF ensembles)
As the new year begins, Belgium is heading into a prolonged winter spell, characterised by cold temperatures, recurrent instability, and frequent wintry precipitation, varying in form depending on region and timing.
📅 Friday, 2 January
A rather cold day with a highly changeable sky.
After bright spells in the morning, conditions will deteriorate gradually from the west. Rain will spread across the country and turn into sleet or snow, certainly in the Ardennes and locally across lowland areas during the night.
Winds will be brisk, with gusts of 50–70 km/h from the southwest, shifting to northwesterly along the coast, before easing later.
- Precipitation: 0.5–15 L/m²
- Minimum temperatures: –3 to +3°C
- Maximum temperatures: –1 to +5°C
📅 Saturday, 3 January
The cold conditions persist.
A very changeable sky will bring sunny intervals, but also snow showers across the north-eastern half of the country (Antwerp, Limburg, Liège). During the following night, snow showers will become more widespread.
Winds remain noticeable, with gusts of 35–55 km/h from west to northwest.
- Precipitation: 0–15 L/m²
- Minimum temperatures: –5 to +1°C
- Maximum temperatures: –3 to +3°C
📅 Sunday, 4 January
A continuing wintry atmosphere, with a highly variable sky.
Snow showers will again affect mainly the north-east, interspersed with occasional brighter spells.
- Precipitation: 0–10 L/m²
- Minimum temperatures: –5 to +1°C
- Maximum temperatures: –3 to +3°C
📅 Monday, 5 January
Still rather cold, but calmer.
A variable sky with lengthy bright spells and mostly dry weather.
- Precipitation: 0–5 L/m²
- Minimum temperatures: –6 to 0°C
- Maximum temperatures: –3 to +3°C
📅 Tuesday, 6 January
The cold intensifies slightly.
Conditions turn variable to cloudy, with locally rain, but also snow or sleet, mainly above 200 metres.
Southerly winds will strengthen at times.
- Precipitation: 0–5 L/m²
- Minimum temperatures: –7 to –1°C
- Maximum temperatures: –3 to +3°C
🔎 Likely trend
From 7 to 14 January, the weather remains predominantly cold to cool, with recurrent wintry precipitation, especially snow in the Ardennes, before a gradual shift toward wetter and slightly milder conditions later in the period.
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Forecast anomalies at 500 hPa
(mid-troposphere = 5,000–6,000 m altitude)
( charts )
Weather Update – 31 December 2025 | 8 AM
The latest ensemble forecasts show strong agreement for the period from 5 to 12 January. They point to the establishment of a broad low-pressure system stretching from the western Maghreb across Central Europe to the Baltic states.
Within this pattern, our regions would remain under the influence of a predominantly north-westerly to westerly flow, at times turning more north-westerly to northerly, favouring cooler and often unsettled conditions.
During the second and third ten-day periods of January, however, a shift in the large-scale circulation appears increasingly likely. The main flow would gradually veer towards the south to south-west, while low-pressure activity becomes increasingly concentrated over the Atlantic, close to the British Isles. This would allow milder maritime air to spread across the region, accompanied by more frequent disturbances and rainfall.
According to current indications, this atmospheric configuration could persist until the end of January and extend into the opening days of February, suggesting a continuation of generally mild yet often unsettled winter weather.
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SOURCE: METEOCONSULT
BENELUX:
Weather Outlook for 3-4 weeks
Weather outlook – 9 to 25 January 2026
9–18 January: winter uncertainty, possible milder and wetter influence from the west
Medium-range forecasts still point towards predominantly wintry conditions, driven by a dominant northerly flow bringing cold and unsettled weather.
Under such a pattern, snowfall at low elevations cannot be ruled out, particularly across northern and eastern regions.
At this lead time, however, uncertainty remains high, both regarding the severity of the cold and the strength of disturbances arriving from northern Europe.
At the same time, alternative scenarios suggest a gradual shift towards milder and wetter conditions, with recurring weather fronts and temperatures returning closer to seasonal averages, especially from the west.
19–25 January: distinctly milder and unsettled
For the period 19 to 25 January, model guidance increasingly supports the establishment of a disturbed west to south-westerly flow.
This setup would bring frequent spells of rain, interspersed with temporary calmer intervals.
Temperatures are expected to rise significantly, settling well above seasonal norms, signalling a sustained break from winter conditions.
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Weather Outlook for 3 months
Update 13-12-25 – 3:00 PM
January 2026: a wintry spell before milder conditions return
January 2026 is expected to open with a distinctly wintry phase, followed by a clear and lasting return to milder conditions during the second half of the month.
The nationwide temperature anomaly is estimated at +0.7°C, pointing to an overall mild month despite a cold start.
Early January could bring low temperatures and a risk of snowfall reaching lowland areas.
From mid-January onwards, Atlantic influences are likely to dominate, bringing temperatures well above seasonal averages.
In terms of precipitation, a slight surplus (+5%) is anticipated. Weather systems would be fairly frequent at the beginning of the month under a northerly flow, before shifting to a westerly to south-westerly Atlantic regime from mid-month.
As a result, January could become the wettest month of the 2025-2026 winter.
February 2026: slightly drier and still mild
February is expected to remain generally mild, with a temperature surplus close to +1°C.
Weather conditions are likely to be contrasting, with cold mornings followed by milder and often sunny afternoons, as high-pressure systems settle more frequently over the region.
Precipitation totals would be slightly below average (-10%), with less active weather systems due to the influence of persistent high pressure over continental Europe.
March 2026: finally a seasonal month?
March could finally deliver near-average seasonal conditions.
Temperatures are expected to fluctuate around climatological norms, with alternating cooler periods and milder, more unsettled phases, typical of early spring.
Precipitation should be close to average overall, though locally below normal, under the possible influence of high-pressure systems over northern Europe.
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Update to BMCB Multimodel – since 1 October 2025
from ICON (replace location left above )
from ECMWF (replace location left above)