In December, the weather in Acapulco is typically hot. Average daily high temperature in December is about 29 degrees above zero. On average, Acapulco has 20 sunny, 8 partly cloudy, 2 rainy, and 1 cloudy day in December. The rains are usually light. December as well as January, February, March, and April is considered the most comfortable time to visit Acapulco.