My bike sweats under it's cover,is there anything I can do or is it something I have to live with?

 

Arid Extra Dry? (Sorry, couldn't resist.)

 

Take it off it's not breathing and the condensation will make some of the small hardware start to rust. Get a breathable cover or don't use one at all. It's probably due to temperature changes.

 

Big Weaz where you located? I am in Texas and even when it rains my cover does not sweat. And my bike is only under a three sided carport. I would look into a nice breathable cover.