Is there any place in the world that exists?

With kiteboarding; more options, more places. It's always windy somewhere.

With the buggy; limited places.

In the middle of Oklahoma; typically in July/August, it's 100+ degrees every day and zero wind. We just had a windy May; but right now; we have a rainy June.

Any place to buggy that has reliable or consistent wind?

Your search should include areas that have wind turbines. The people who financed those things have done their research and analysed all the data before going ahead. I hear Antarctica has some fantastic winds and it's cool year round.

I'd say the beach in the winter (think Florida :-) ), the desert in the Spring and Fall, and ? in the summer. I'm not sure of anyplace that is amazing the the summertime, although the beach can have nice days. Probably best to visit the Southern Hemisphere this time of year; kite the coastline of Brazil. I imagine it would be quite nice.

Ever seen the endless summer documentary on surfing? You'll have to try your hand at doing the same for kite buggying.

Aruba is windy almost all the time