In reply to Rigid Raider:
> Daft question really; at any time when there isn't a breeze or bright sunlight you can be sure the Caledonian Lufwaffe will be out.
Well I camped in calm conditions at the Fords of Avon in early July and it was midge-free.
But for an area the size of the Cairngorms, you're probably right. With the midge season about over I was just trying to get a feel for how things are up there.
Thanks to those who responded!