Saturday is expected to start with sunny weather in the east and north-east, while most other regions will begin under cloud cover, according to the Royal Meteorological Institute (IRM).
The sky will become variable across the country, with a mix of sunny spells and cumulus clouds, particularly numerous in western Flanders.
The weather will generally remain dry, with only a slight chance of brief morning drizzle under low clouds or an isolated afternoon shower. Late in the day, the sky will clear over much of the territory.
Maximum temperatures will range around 22°C or 23°C at the coast, 22°C to 24°C in the Ardennes, and between 25°C and locally 28°C elsewhere. The wind will be moderate, sometimes quite strong at the coast, blowing from the west to south-west.
Overnight, skies will clear across the country. However, by dawn, low clouds and mist might reappear in the west, with possible fog banks in the Ardennes valleys.
Minimum temperatures will be between 13°C or 14°C in the High Fens and 18°C in some large urban areas. Winds will become weak and variable or south-west inlands, generally moderate from the west to south-west at the coast.
Sunday will be warm, summery, and sunny, with maximum temperatures of 22°C at the coast and 28°C or 29°C in the centre of the country.
