Panama City Panama......any sunny days in May......?

That partly depends on where you plan to go and when in May you get there. aona had some good information but I'd add this. Even in the rainy season it's common to have bright clear mornings that become cloudier as the day goes on. In the early afternoon the rains start. Who can know exactly when they will begin (sometimes earlier) or how long and how heavily they will come down? You'll probably still have some beautiful morning weather that you can enjoy activities so plan accordingly to maximize your time.

It depends, the rainy season in Panama, begins in May, around mid-May. Therefore, you will be able to enjoy some of our bright sun, if you like outdoor activities. Ok.