Windy or breezy.
Billowy, blowing or waving in the wind.
Susceptible to drifting.
Accompanied by or featuring wind and/or precipitation.
Lacking in flavour as a result of the leaves having been harvested during mid-season rains.
Subject to frequent changes (of direction or fortune, for example).
Worn or otherwise affected by weather; (of a person's features or body) showing signs of age or wear.