Monday will begin with widespread clear skies across the central and eastern parts of the country, while the west will see more clouds, with weather becoming partly to heavily cloudy over time.
Regular showers are expected, and the chance of thunderous showers will increase during the afternoon as per the Royal Meteorological Institute (RMI) forecasts.
Temperatures will reach around 17°C in the Hautes Fagnes, about 20°C at the coast, and between 20 and 24°C in lower Belgium.
A moderate south wind will shift to the southwest and to the west along the coast, with possible gusts of up to 55 km/h, especially during thunderstorms.
In the evening, the likelihood of showers will decrease from the west.
After midnight, showers will reappear at sea, near the Dutch border, and in the southern part of the country.
Overnight temperatures will range from 10°C to 16°C under a moderate south-westerly wind.
On Tuesday, cloud cover will vary from light to dense with showers, but by late afternoon, drier weather with clearer skies will move in from the west.
Temperatures will vary from 17°C in the Hautes Fagnes to 23°C in Campine, with a moderate west to southwest wind possibly becoming quite strong at sea, reaching gusts of up to 50 km/h.
Wednesday morning will still have some wide clear skies and temporarily drier weather.
As the day progresses, cloud cover will increase with thundery showers expected across the country, particularly in the afternoon.
Maximum temperatures will range between 19 and 23°C.
On Thursday, the weather will often be cloudy with frequent showers, especially in the highlands, and may be locally accompanied by thunder.
Friday will start with quite abundant cloud cover and some showers.
However, as the afternoon progresses, clearer skies will become more widespread.
