Didn't you know? The wind always originates from your intended destination, and flows outward equally in all directions. Don't ask how the game knows what your intended destination is at all times...

Seriously though, it appears the wind is a global parameter, starts in one direction at one speed, and then changes directions and speeds quasi-randomly at quasi-random intervals. It's a common problem of human cognition to see patterns where there are none, and to feel a victim of fate.