Weather and clothes during the National Day in Bruges, Belgium. Excuse me, is it appropriate to wear a thick woolen coat and chiffon skirt, such as the collocation on the way?

During the National Day in Bruges, Belgium, it is generally about 10 degrees in the morning, below 20 degrees in the afternoon, and generally more than ten degrees. It is likely to rain this season. If you are not too afraid of the cold, for example, on the road, it is appropriate to wear a thick woolen coat, a chiffon skirt and boots!