Any ideas on how to stop patio concrete from sweating?

It sweats b/c the temperature of the concrete is colder than the dew point temperature of the surrounding air, thus the water vapor in the air condenses on the cold concrete surface - physics/psychrometrics.

Short of waiting until the concrete warms to a temperature exceeding that of the dew point temperature of the surrounding air, the concrete is going to sweat. Now that you know the cause, I’ve found blowing air across the concrete surface with a decent size fan helps.

ETA: Article on the subject that might help LINK - explains how covered areas like carports and patios take longer to warm up.

Same problem with mine. It blows.

Craw dude explains it nicely. The only way to keep it from happening would be to somehow warm the slab up. Since you don’t have heating coils built into the slab, the only other way to do it would be to blow some kind of heater across the slab until you raise the temperature. This would obviously not be feasible….