Compost bins: in the shade or in direct sun?

I just started gardening last fall.  I made a couple compost bins with lightweight fencing wire.  3 feet tall and 3 feet diameter -- tied together with plastic zip ties.   They've been working pretty well.  I just lift them up over the pile and relocate and shovel into it from the exposed pile.

I set them both up underneath a tree and they don't get much sun at all during the day.

Would it be better for me to move them both across the yard so they get direct sun most of the day?  Would they compost much faster?  If I did this, I guess I'd have to water more often?  How often would I have to water the bins in say 80-95F degree weather?   Turn them a couple times per week and only water them in layers at that time?

The microbes you are growing in the compost like it moist and evenly warm. In the shade is normally better as you don't get the temperature swings and it's les likely to dry out. However the tree might steal your compost (see a recent post)

Another consideration in location is elevation and convenience of spreading or adding to the bin. For elevation, it can be very beneficial to have your compost above your garden (even on top of or embedded in a raised bed). This makes any leaching a free fertigation of your garden and the micro/macro decomposers will go in and out through the mesh, improving the biology of your soil on their own. Convenience may be obvious in regard to having it between your kitchen and the garden, but I find when I make a job easy and quick, I am much more likely to do it in a timely manner and enjoy doing it.