Joelel, is right on the mark.
Hives in full sun, work earlier in the morning, later in the day. They work earlier in the spring and later in the fall.
I have had hives in the same apiary that on one side, they were shaded. And on the other end, they had full morning sun. Those in the sun had their morning dew burn off faster and become more active much faster. This may not mean much in the heat of the summer. But for a good part of spring and fall, this extra production can really add up.
We did v-mite sampling between shade and sun for years as inspectors in Pennsylvania. And across the board, hives in shade had higher v-mite counts, higher spring secondary stress diseases such as chalk and sacbrood, among other things.
When you realize that full sun, or at least giving them as much sun as possible for your property, then bees are healthier, then it really just comes down to working hives earlier in the day or at time when it is not 95 degrees.
And that winter sun, really can be the difference in survival. Hives in Sun during winter may really benefit from the heat produced, allowing bees a short flight that bees in the shade may not be able to take.