We had really cold weather in end-feb/march, I advise to take a good rain jacket and some warm layers. The temperature increases quickly by the middle of April!
The weather was very mild. You should take a sweater or a jacket for the sometimes slightly chilly evenings. But you should also think about your swimsuit, I went swimming on December 19.
I was there during November and December and the weather was mild. I was wearing a mid-season coat and a t-shirt in November, a sweatshirt in December.