Against the direction of the wind.

towards the side exposed to wind

in the direction opposite to the direction the wind is blowing; "they flew upwind"

Sailing against the wind at an angle a certain yacht can achieve.

On the same side as the direction from which the wind is blowing—windward.

toward the wind.

In the direction from which the wind is blowing. Also see "downwind"

The dog proceeds into the wind.

A usually difficult sail against the wind.

to windward, in the direction of the wind.

The direction from which the wind is blowing. Also the windward side of an object. The opposite of the downwind or leeward side.

In the direction that is against the wind

In or towards the direction from which the wind blows. To be upwind of an item, the wind would be blowing from your position to the item.