On Saturday, after any local low clouds dissipate, it will be quite sunny with high clouds. Temperatures will be mild, between 11°C and 16°C with a moderate wind that could at times be quite strong on the coast.
Sunday will be dry and often sunny. However, high altitude clouds will sometimes obscure the sun, mainly over the west part of Belgium. It will stay very mild with maximums of 12°C to 15°C degrees in the Ardennes, and 15°C to 17°C degrees elsewhere.