In Hautes Fagnes, a few chips will be possible, especially at dawn, according to forecasts from the Royal Institute of Meteorology (IRM). Maximums will range between 4°C in Hautes Fagnes and 8 to 9°C in Flanders. The winds will be moderate to strong locally from the south, with a peak speed of 50 to 60 km/h. In the afternoon, the winds will shift to the southwest sector.
Tonight, it will be very cloudy at first with periods of rain. Drier weather will return quickly from the west with significant sunny spells and a risk of heavy rain on the coast. In the Ardennes, the risk of drizzle will continue and low clouds may limit visibility. The lower limit is between 3 and 7 degrees Celsius. The wind will be southwesterly, moderate in speed, returning to the south.
On Wednesday, the day will start with dry weather with some temporary clearance still north of the Sambre-et-Meuse gully. An area of rain, moderate at times, will already reach the coast during the morning and cross the country from west to east. At depth, large areas will appear. Maximums will be between 6°C in the Hautes Fagnes and 12°C on the plain. The winds will be moderate to relatively strong, shifting from south to southeast to southwest.
On Thursday, once the last showers have cleared towards Germany, it will be generally dry weather during the day with great clearances and high sails. Maximums will be between 7°C in the Jordan and 11 or 12°C locally in the Sahel.
On Friday, the sky will become variable over hours and some rain may occur, mainly in the coastal area and also in a more local way in the Ardennes relief in the afternoon.
Saturday, the weather should be dry with good clearance in Lower and Central Belgium.