August in Panama City Beach is the rainiest, the cloudiest, and the hottest month of the year. In August, the weather in Panama City Beach is typically hot. Average daily high temperature in August is about 30 degrees above zero. On average, Panama City Beach has 17 rainy, 11 sunny, and 3 partly cloudy days in August. The rains are usually heavy. August as well as July is considered the most uncomfortable time to visit Panama City Beach.