Serve into wind rather than fight it: read the flag before every toss and move your target instead of your swing.
12 minvolleyball, sand or grass court
Steps
01Before each serve, look at the net tape, a flag, or loose sand blowing across the court and name the wind out loud: into you, behind you, or across.
02Into the wind, toss lower and closer to your body and expect the ball to hold up, so aim two feet deeper than you normally would.
03With the wind behind you, toss lower still and take pace off, contacting flatter so the ball does not sail long.
04In a crosswind, aim one body-width upwind of your target and let the wind carry it back.
05Serve 5 in each condition you can find, calling the read and the adjusted target before contact, and score only whether the ball landed in the third you named.
Common mistakes
Swinging harder into a headwind, which adds spin and makes the ball drop shorter still.
Keeping the same toss height in wind, so the ball moves before contact and the swing chases it.
Aiming at the target instead of upwind of it in a crosswind.