General Weather Evolution for the Next 6 Days
Europe: Analysis & Forecast maps (6 days)
Update 12/06/2025 at 12 PM
A high-pressure system of 1030 hPa, centred on Friday afternoon over southeastern Sweden, will continue to drive very warm continental air over our regions. At the same time, a thundery low of 1014 hPa will develop over central France and move northwards on Saturday towards the western North Sea. Associated thunderstorm zones may locally affect the south of the Benelux as early as Friday, but more widespread activity is expected on Saturday with the passage of an active cold front. This will be followed on Sunday by a cooler maritime air mass, in which the atmosphere will quickly stabilise under the influence of a new high-pressure system of 1030 hPa arriving west of the English Channel by Monday.
This anticyclone will extend a ridge towards our regions early next week, ensuring a return to dry and again warm weather conditions.
36-hour forecast (Chart)
(According to deterministic and operational models: MULTIMODEL BMCB)
(These forecasts are generally updated every days)
Update – 12 June 2025, 09:00
🌧 Expected rainfall (next 36 hours):
- North of the Scheldt: 0–0.5 L/m²
- Between Scheldt and Sambre-Meuse valley: 0–6 L/m²
- South of the Sambre-Meuse valley: 0–4 L/m²
📅 Forecast for today
Morning :
☀️ Mostly sunny with just a few high cirrus clouds.
🌬 Wind from east to southeast, gusts of 20–40 km/h.
Afternoon :
🌤 Sunny spells with some altocumulus and cirrus (20–50 % coverage).
🌬 Wind from east to southeast, gusts of 25–45 km/h.
🌡 Max temperatures: 26–29°C in the Ardennes, 27–32°C elsewhere.
Evening :
🌤 Clear spells with patches of altocumulus/cirrus (20–40 %), especially in Hainaut.
🌬 Light, variable winds with gusts up to 25 km/h.
Overnight :
⛅ Increasing cloudiness: 0–30 % cloud over West Flanders, Antwerp and Limburg; 30–100 % elsewhere with stratocumulus, altocumulus, altostratus and cirrus.
⛈ 90–100 % risk of localised showers or thunderstorms by the end of the night, especially south of the Lys and Scheldt.
🌬 Light and variable wind, gusts up to 15 km/h.
🌡 Min temperatures: 15–21°C, locally 12–15°C in southern valleys of the Sambre-Meuse axis.
📅 Forecast for tomorrow
Morning :
🌤 Sunny again with 30–60 % cloud cover (stratocumulus, altocumulus, cirrus), mainly in West Flanders and around Liège.
🌬 Variable winds: northwest over Flanders and Hainaut, southeast elsewhere, gusts up to 25 km/h.
Afternoon :
🌤 Bright with scattered cumulus, altocumulus and cirrus (10–60 %) inland.
🌬 Wind from north to northwest over both Flanders and western Hainaut, southeast to east elsewhere; gusts up to 35 km/h.
🌡 Max temperatures: 18–22°C at the coast, 29–34°C inland.
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(Chart)
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
(Usually the highest values are in urban areas, the lower Meuse valley, the Gaume and in the Campine, except in the cold season where these values occur mainly in the coastal area; the lowest values are largely expected on the highlands of the Ardennes)
(These forecasts are generally updated every 4 days)
General Forecast (6 Days + Outlook)
Update – 12 June 2025, 5:00 PM
🔥 Oppressive heat and tropical thunderstorms ahead
The summer heat shows no sign of easing. After a tropical night where temperatures remained between 16 and 21°C, Friday promises to be stifling, under the direct influence of a hot continental airflow from northern Italy and the Alps.
From early morning, heavy air and generous sunshine will dominate, although some stubborn morning clouds may linger along the coast and in the eastern provinces, potentially bringing an isolated shower. As the day progresses, the sun will prevail, pushing temperatures into heatwave territory: 28 to 31°C across the Ardennes, and 30 to 34°C over the lowlands. Notable exceptions: western Flanders, cooled by a northerly breeze (23 to 26°C), and the coast, where temperatures will peak between 18 and 22°C.
By late afternoon, thunderstorms will develop over northern France, spilling into western Belgium and Flanders during the evening and overnight. The night will remain sultry, with minimum temperatures similar to the night before.
🌩 Saturday: humid and locally intense thunderstorms
A dynamic low-pressure system tracking from northern France towards the North Sea will steer an active storm front over the western part of the country. Ahead of its arrival, the morning will remain very warm and sunny in central and eastern areas, with highs again exceeding 30°C, potentially reaching 35°C in eastern Limburg. Along the coast, cooler air will persist with values between 20 and 23°C.
By early afternoon, cloud cover will increase in the west and centre, bringing initially weak thunderstorms that will strengthen further east. The Ardennes may be particularly affected by intense thunderstorm activity. Meanwhile, the coast and Flanders will see clearing skies and noticeably fresher air, with temperatures between 18 and 26°C.
In the evening, stormy showers will linger inland, while western Hainaut and western Flanders are likely to remain largely unaffected. The night will be more breathable, with lows between 11 and 17°C.
🌤 Sunday: return of more stable and comfortable conditions
The storm front will have moved away, making room for a more temperate maritime flow. Under a sky with a mix of sunshine and cumulus clouds, temperatures will become much more tolerable: 18 to 21°C along the coast, and 21 to 25°C inland. The night will be calm, clear and pleasantly cool, with lows between 10 and 15°C.
☀️ Monday: generous sunshine and renewed stability
A high-pressure system centred near Brittany will bring dry and mostly sunny weather, especially along the coast. Elsewhere, sunshine will alternate with a few fair-weather clouds, slightly more frequent over the Ardennes. Temperatures will hold steady or rise slightly in areas like Gaume and Campine.
🌞 Tuesday & Wednesday: classic summer weather across western Europe
Thanks to the persistent high pressure, the weather will remain pleasantly summery. Sunshine will be widespread, with temperatures ranging between 24 and 29°C inland. Wednesday afternoon could see another temperature rise. Along the coast, a light sea breeze will keep highs more moderate, between 20 and 23°C.
📉 End of the week outlook: dry with slightly cooler air
The end of the week should remain dry and sunny, though a northerly to north-easterly breeze will bring a slight drop in temperatures, with highs ranging from 20 to 25°C inland. A perfect setup for enjoying the outdoors without the oppressive heat.
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METEOCONSULT
Update 11-6-25
Weather Outlook – July to September 2025
July 2025: hot with persistent storm risks
Our seasonal model forecasts temperatures +1 to +2°C above average, which is a notable anomaly. Thunderstorm activity remains a key feature, especially in the east of the country. Precipitation totals should hover near seasonal norms but with strong regional contrasts.
Forecasts vary between models: the CFS model also suggests a storm-prone pattern, while the MET Office and ECMWF lean towards a much drier scenario. The latter – combining heat and dryness – raises concerns about heatwave potential.
🔹 Key takeaway: July could be the hottest month of the summer, with unavoidable heat spikes likely broken by thunderstorm outbreaks.
August 2025: similar pattern – warm and stormy
Above-average warmth continues, though the anomaly may be less intense than in July (+1 to +1.5°C). Our model indicates increased rainfall, possibly linked to Atlantic low-pressure systems triggering showers and storms.
🔹 Key takeaway: Still a stormy month, somewhat less hot than July based on current guidance.
September 2025: trend towards more instability
Forecast reliability declines for this timeframe. However, our model still shows temperatures slightly above seasonal averages, but with more unsettled and changeable conditions likely to dominate.
🔹 Key takeaway: An increasingly unstable month, with heat gradually diminishing.
Copyright Luc Trullemans, only for publication on meteo-be.net & bmcb.info
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