December in Playa Santa Maria is the sunniest month of the year. In December, the weather in Playa Santa Maria is typically hot. Average daily high temperature in December is about 29 degrees above zero. On average, Playa Santa Maria has 25 sunny, 5 partly cloudy, and 1 rainy day in December. December as well as January, February, and March is considered the most comfortable time to visit Playa Santa Maria.