Firstly this should probably be in the kite or windsurf forum but...
I have always heard, "April and May put your kites away". On saying that today (wed) I just spent 4 plus hours kiting



One and a half in surf in the morning then moved and foiled for 2.5 hours.... Brilliant.
Foiling has made a huge difference to the amount of time I spend on the water. Especially as I live in probably the least windy spot on the west coast.
In answer to your question...I think this season (now definitely finished), has been average.