I'm at the mercy of the sun's position in the sky, and how that corresponds to how much/where the tree next to my driveway throws it's shade.
But then I have to worry about sap in the summer, pollen mid-spring to now, bomber birds sitting in said tree, and any 'tree litter' falling on it while waxing.
Of course, I could wait for a cloudy, but 0% chance of rain type day for this, but between scheduling, and that almost never happening around here, it is slim to none for that 'ideal' scenario.