You might spend a lot of your vacation inside, but if you want to see more of the area, looking at local weather trends is a good idea. The hottest months are usually August and July with an average temp of 82°F, while the coldest months are January and February with an average of 59°F. The rainiest months in Panama City Beach are August, July, September, and June, with each month seeing an average of 7 inches of rainfall.