Copenhagen has great winds almost year around. Spring and fall are great for more consistent periods, but generally its island wind, so changing a lot. Nick Jacobsens home turf and the two major spots in Copenhagen area.
West-winds are the normal 80% of the time, and usually during the fall we will have many days with medium to strong winds.
The water and temperature is cold. Thick wet-suit used all year - but there is some sick days for massive big airs during the fall (sep-nov).