The summer temp is around 25°C, in the winter around freezing. In the summer the water is around 20°C and in winter 8°C. The weather in Holland is very variable. From March to October the temperature is pretty good. When you are lucky you can have some days that you don`t have to wear a wetsuit. But normally you definitely need a wetsuit. In the months November to February it's winter time. Only die hards go out kiting with caps and hats. The water is always a bit warmer here due to the cooling waters from the power plant.
From Roosendaal take A4, A58 towards Middelburg. Bevore Middelburg exit in Zuid-Beveland and drive until you reach Borssele. Just in front of the power plant.