A rainy day can be peaceful to some while it could cause trouble to some. All in all a rainy day helps the plants grow better. The advantage of a rainy day is that water is recycled from all around the world and redistributed to the ground.
The disadvantage could be that if heavy rains prolongs it could lead to flood and landslide placing a great deal in jeopardy. It has been said that as a raindrop falls, it becomes less spherical in shape and becomes more flattened on the bottom.