To a degree the water will flow the way the wind blows if there is no current. Also the bait will be move with the water the way it flows or is pushed, Which means that the prey fish will also go that way following there prey items. As long as there is no wind against tide the water will remain pretty calm, If there is wind against tide it can get pretty snotty even on the beach.
When casting against the wind I use a sidearm cast from around the height of my waist, this way you have some leverage against the wind & your bait & sinker have a shot at going further because there is less resistance to the movement of the bait & sinker.
Hope this will give you some idea of what goes on.