However, on the following sunny day, it is true the shaded areas would be slower to warm up than the concrete exposed to sky and solar radiant gain. The timing of the shift from cold dry air advection to warm, moist air advection would also factor in as to when and how intensely moisture in the air would condense on the concrete surfaces. Or, in psychrometric terms, when the dew point temperature of the air over the concrete increases above the surface temperature of the concrete, condensation occurs.

We had quite a bit of the cold dry air front/warm moist air front battle locally this year. My carport slab following the warm front passing would be so wet with condensation it was a slip hazard. One particular warm front was quite strong and sudden, so not only did my shaded carport slab get soaked, about every other horizontal surface outdoors did, also, shaded or not.

John, I think they probably

John, I think they probably all sweat about the same. The brushed ones may absorb the water better but they mainly provide better traction and have more surface area where the condensation can “hide.”