Weatherspark can give you climate summary including average wind directions, e.g. here for San Marcos:
https://weatherspark.com/y/7997/Aver...tes-Year-Round
With that said,
-- winter tends to have roughly similar proportions of winds from S and from N and summers tend to have more winds from the S and not much at all from the N.
-- I haven't found winds to be as much of an issue as other places, partially because there are more trees and partially because of curves and hills