Forecasts for the next 36 hours (chart)
(These forecasts are usually updated daily)
Update 18 November 2025 – 8 AM
BMCB Multimodel: ICOND2 – AROME HD – ALADIN
🌧 Precipitation (next 36 hours)
- North of the Scheldt: 3–13 L/m²
- Between Scheldt and Sambre–Meuse: 3–10 L/m²
- South of the Sambre–Meuse axis: 5–20 L/m²
🌤 Today – Detailed Outlook
🔹 Morning
Cloudy to variable, broad sunny spells, 50–100% cumulus.
Showers over Antwerp, Limburg, both Brabants, West Hainaut.
💨 Wind: southwest 5–25 km/h, coastal: west–northwest 25–40 km/h.
🔹 Afternoon
Variable to cloudy, frequent bright spells, many cumulus.
Showers across Flanders, Antwerp, west Liège, Namur, east Hainaut.
Sleet above 300 m.
💨 Wind: southwest 15–35 km/h, coastal & Antwerp west 35–45 km/h.
🌡 Highs:
- 7 °C coast
- 5–7 °C inland
- 3–4 °C High Ardennes
🔹 Evening
Overcast, a few breaks near Liège.
Sleet then snow above 300–400 m south of Namur & Belgian Luxembourg.
Light rain reaching both Flanders.
💨 Wind: south to southwest 20–40 km/h.
🔹 Tonight
Cloudy everywhere, clearer intervals in Flanders with possible showers.
Elsewhere: rain, turning to sleet >200–300 m and snow >300–400 m (1–6 cm, locally 6–13 cm).
🌡 Lows:
- 5 °C coast
- 2–5 °C inland
- 0 to –3 °C south of Sambre–Meuse
🌨 Tomorrow
🔹 Morning
Generally cloudy, showers and coastal thunderstorms possible.
Lowlands: rain.
South of Sambre–Meuse: sleet >200–400 m, snow >400–500 m.
💨 Wind: southwest 20–40 km/h, northwest 40–45 km/h coast.
🔹 Afternoon
More variable over Flanders, Antwerp, Campine: showers of rain, sleet or hail, risk of thunderstorms.
Elsewhere: intermittent precipitation, sleet >300–400 m, snow >500–600 m.
💨 Wind:
- southwest 20–40 km/h
- north to northeast 35–55 km/h over Flanders & Antwerp
- 55–75 km/h along the coast
🌡 Highs:
- 9 °C coast
- 2–8 °C inland
- 0–1 °C High Ardennes
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General Weather Evolution for the Next Days
Europe: Analysis & Forecast maps (6=>? days)
Update 18-11-25 11h
A 1011 hPa depression is currently moving southeastwards across the Hebrides, west of Scotland.
By Wednesday midday, its centre will be positioned over northwest Germany with pressures near 1001 hPa.
Associated precipitation will reach our regions tonight:
- Rain in lowlands,
- Sleet above 300–400 m,
- Snow above 400–500 m.
On Thursday, the depression will slide towards the southern Baltic (≈1000 hPa), while another low arrives from the Norwegian Sea into the North Sea (1004–1006 hPa), maintaining cold and unstable air with showers.
Friday and Saturday, a ridge of high pressure will promote the development of a 1028 hPa anticyclone across Poland and Belarus, bringing more stable cold air, clearer skies, and widespread frost—locally moderate in lowlands, severe in the Ardennes.
On Sunday, an ocean-origin system will reach England, the Channel, and France, and could then move across our regions with rain or snow depending on altitude. This scenario remains uncertain.
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National Thermal Indicator (Chart)
MULTIMODEL BMCB
(These forecasts are generally updated daily)
Update: 18-11-25, 12h
The national thermal index, currently between –3 and –4, is expected to rise slightly on Wednesday to around –2. Daytime highs should range between 0 and +9°C, while nighttime and early-morning lows will vary from –3 to +5°C.
A marked decline is forecast afterwards. The minimum should occur on Saturday, 22 December, with the index dropping to about –7. This corresponds to daytime highs between +4 and –2°C and night-time and morning lows between –1 and –7°C. Some valleys south of the Sambre–Meuse axis could even drop below –10°C.
Towards the end of the month, a gradual warming is likely, bringing the index back into positive territory.
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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 18 Nov 2025 at 13:00
📅 Thursday 20 November
1–34 L/m² · –3 / +3 °C · 0 / 6 °C
Cold conditions with occasional thundery showers along the coast. Inland: rain or sleet pellets ; wet snow above 300 m and snow above 500 m.
Night: persistent coastal showers ; a few weak showers inland ; local freezing fog forming.
📅 Friday 21 November
0–1 L/m² · –4 / +2 °C · 0 / 6 °C
Cold with variable cloud ; a few morning showers, brighter later.
Night: clear spells, freezing fog especially south of the Sambre–Meuse valley ; locally moderate to severe frost in the Ardennes.
📅 Saturday 22 November
0–1 L/m² · –7 / –1 °C · –2 / 4 °C
Cold with sunny spells ; increasing cloud from the west.
📅 Sunday 23 November
0–7 L/m² · –6 / 0 °C · 0 / 6 °C
Cold with precipitation sometimes falling as sleet or snow.
📅 Monday 24 November
10–30 L/m² · –6 / 0 °C · –1 / 5 °C
Cold with a risk of moderate to heavy rain, sleet or snow (to be confirmed).
Trend 25/11–02/12: cold to fresh, occasional light precipitation, some snow in the High Ardennes.
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METEOCONSULT
BENELUX:
Weather Outlook for 3-4 weeks
Update 13-11-25
Period from November 28 to December 7: calmer and fairly mild trend
Forecast confidence for early December remains very low, as weather models are still highly divergent.
The prevailing trend points toward a strengthening anticyclonic ridge between the Atlantic and Central Europe, bringing calmer conditions.
Expect widespread grey skies, fog, and low clouds, with temperatures slightly above normal for the season.
Week of December 8–14: relative mildness, fog, and calm weather?
For the second week of December, the overall signal remains mild across Western Europe.
A disturbed westerly flow will mostly affect the British Isles and the northern parts of the continent, leaving Belgium under calmer, sometimes damp conditions, with no structured winter cold spells.
- Temperatures: slightly above average.
- Precipitation: near normal, locally a bit higher.
A possible early stratospheric warming over the Arctic could alter the large-scale circulation later in the month, keeping confidence levels low.
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Weather Outlook for 3 months
Update 11-11-25
Winter Outlook 2025–2026: mostly mild with variable conditions
🌡 Temperatures: around or slightly above normal (+0.5 °C), with a wide spread among models, meaning no dominant scenario can be confirmed.
🌧 Precipitation: near seasonal averages, with a possible surplus in eastern and mountainous areas.
🌬 General context: alternating between calm, high-pressure periods and unsettled spells, with no lasting cold outbreaks.
🔹 Summary December 2025 – February 2026:
Winter is expected to be slightly milder than average, with a mean thermal anomaly of +0.5 to +1.0 °C.
Rainfall totals should remain close to normal — slightly below average in December, above in January, balancing over the season.
A dominant westerly oceanic flow and frequent anticyclonic influence will limit major cold waves.
Under La Niña influence, circulation contrasts could intensify — bringing mild and wet conditions to western Europe, with brief but sharper cold spells in February.
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Update to BMCB Multimodel – since 1 October 2025
from ICON (replace location left above )
from ECMWF (replace location left above)