Forecasts for the next 42 hours
(BMCB Multimodel: ICOND2 – AROME-HD – ALADIN)
(These forecasts are usually updated daily)
Update 12 April 2026
Over the next 42 hours, conditions will remain generally calm, with limited and unevenly distributed precipitation: 0–10 l/m² north of the Scheldt, 0–6 l/m² between the Scheldt and the Sambre-Meuse axis, and only 0–2 l/m² further south.
Today begins fairly bright with high cloud, though more overcast in southern regions. The afternoon remains partly sunny with cumulus developing mainly across Flanders and central areas. Highs reach around 14°C at the coast, 12–16°C inland, and 10–11°C in the higher Ardennes. During the evening and overnight, cloud cover increases under widespread high cloud, with mild lows of 5–10°C inland.
Tomorrow turns cloudier. The morning will be mostly overcast with light rain possible, first in western Flanders and later south of the Sambre-Meuse line. During the afternoon, conditions become variable with limited sunny spells and scattered showers, locally thundery, mainly across Hainaut, Brabant, Flanders and Antwerp. Highs: about 11°C at the coast, 10–16°C inland and 8–9°C in the Ardennes. A few showers may persist into the evening with light to moderate northerly to northwesterly winds.
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National Thermal Indicator
MULTIMODEL BMCB
(These forecasts are generally updated daily)
Update 12 April 2026
A gradual warming trend will develop during the week. By 18 April, the Belgian national thermal index is expected to rise from 0 to -1 up to around +4, indicating increasingly mild conditions.
After still cool maxima on Monday, ranging between 8 and 16°C depending on region and altitude, temperatures will steadily increase, reaching generally 16 to 23°C by the afternoon of 18 April.
For the following period, through 26 April, the index should fluctuate between +1 and +3. In this setup, daytime temperatures would generally range between 13 and 21°C
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General Weather Evolution for the Next Days over the Ocean and Europe
Europe: Analysis & Forecast maps
Update 12 April 2026
Cool and unstable maritime air will still dominate on Monday. At the same time, a high-pressure ridge will develop from northwest Spain towards western France and the North Sea, initiating a gradual improvement.
From Tuesday onward, this high-pressure feature, with a centre near 1021–1022 hPa over western Germany, will stabilise the air mass. The maritime air will become drier and milder.
For the remainder of the week, several high-pressure cells will move across western France, Germany and the southern Baltic region. Weak disturbances tracking from Brittany towards England and the North Sea may occasionally bring more cloud and light rain, while conditions remain generally mild for the season.
Probable outlook for next weekend:
Little overall change is expected, although temporarily warmer and more unstable conditions are possible, especially on Saturday, with showers or even thunderstorms developing later in the day.
Outlook for the following week:
The Scandinavian high-pressure area, extending towards the western Mediterranean, may shift westward towards Iceland and Greenland, while a low-pressure zone develops over western Russia and eastern Scandinavia.
This evolution would keep our regions in a mild but often unstable continental flow, with periods of rain or thundery showers through much of the period.
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Forecast for the coming days
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 Summary – Update 12 April 2026
Overview based on the BMCB multi-model (ICON – AIFS – GFS – ECMWF)
After a generally dry and fairly sunny start to the week, conditions will gradually become more unstable from Thursday onward, with alternating sunny spells and showers. Temperatures will remain mild throughout the period.
Tuesday 14 and Wednesday 15 April will be calm and fairly sunny, with some cumulus inland and patches of fog forming overnight. No precipitation expected.
On Thursday 16 April, skies will turn more variable to cloudy with scattered showers, in a milder atmosphere.
Friday 17 April will see a return to brighter conditions with some cumulus and continued mild temperatures.
On Saturday 18 April, instability increases. Variable skies with sunny intervals but also showers, locally moderate or even thundery inland. Southerly winds will strengthen with gusts of 30–50 km/h.
Sunday 19 April will bring local rain or showers, occasionally moderate, with mild temperatures.
Between Monday 20 and Wednesday 22 April, unsettled conditions persist. Monday may bring locally heavy and possibly thundery rainfall, followed by a temporary decrease in showers on Tuesday. Wednesday sees renewed rain or showers.
From Thursday 23 to Sunday 26 April, mild air remains in place but with frequently changeable and often damp conditions, with recurring rain or showers interspersed with quieter intervals.
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Trend of 500 hPa anomalies (around 5500m) across Europe and the Atlantic Ocean
ALL Maps
Update 9 April 2026
Outlook from 27 April to 11 May 2026
Medium-range projections indicate the persistence of a broad high-pressure block extending from Greenland across central Europe toward the Caspian region. At the same time, low-pressure conditions are expected to remain over the central Atlantic and northern Russia.
Within this pattern, our regions would lie on the southwestern flank of the anticyclonic system, under the dominant influence of a continental easterly flow. This setup would favour the establishment of dry and very mild air, with generally stable weather.
Rainfall and thunderstorm activity would mainly affect southern Europe, particularly eastern Spain, much of the Canary Islands, the Maghreb and the eastern Mediterranean basin.
For the period from 4 to 11 May, high pressure would persist over Greenland and the northern Atlantic as well as over eastern Europe. Our regions would then experience a very mild to warm southeasterly flow.
Rain and thunderstorms would become more frequent over the southwest of the British Isles, western France and the Iberian Peninsula, as well as over Scandinavia, while persisting locally over the central and eastern Mediterranean.
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SOURCE: METEOCONSULT
BENELUX:
Weather Outlook for 3-4 weeks
Weather Trend – Update 10 April 2026
Potential late-April warm spell followed by a more unsettled early May
Majority scenarios suggest that during the week of 27 April to 3 May, a warm and dry southerly flow may develop, leading to a renewed and marked rise in temperatures. Under this setup, near-summer conditions could temporarily establish across France and the Benelux, with locally high values possibly reaching or exceeding strong heat thresholds.
However, this evolution remains uncertain. Alternative model solutions favour a cooler and wetter scenario, which would limit the warming.
For the period from 4 to 10 May, covering early May holiday breaks, the trend points toward more disturbed conditions. The return of an unstable and moist Atlantic flow would bring more changeable weather. As temperatures would remain relatively mild, convective activity and thunderstorms could develop, particularly in a southwesterly flow.
This four-week outlook, updated every Thursday or Friday, remains subject to significant changes in upcoming revisions.
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Weather Outlook for 3 months
Update – 25 March 2026
La Niña weakening, El Niño possible for summer
Ocean-atmosphere indicators in the tropical Pacific show that La Niña is gradually fading, with neutral conditions expected during spring. Multi-model projections suggest this pattern could favor the emergence of an El Niño event during summer.
This transition may lead to a more variable atmospheric circulation, influencing precipitation and temperature patterns across several regions, including Europe. As a result, the weather signal becomes more volatile and less predictable.
April: often influenced by anticyclonic conditions, turning relatively dry. Temperatures near to slightly above normal (+0.5 to +1°C). Risk of late frost early in the month. Below-normal rainfall.
May: stable and rather dry. Temperatures around +1°C above normal. Frequently pleasant conditions. Slight rainfall deficit.
June: potentially warm start to summer with frequent thunderstorm development. Temperatures +1 to +1.5°C above normal. Highly variable rainfall with strong regional contrasts.
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from ICON (replace location left above )
from ECMWF (replace location left above)