December in La Paz is the windiest month of the year. In December, the weather in La Paz is typically warm. Average daily high temperature in December is about 22 degrees above zero. On average, La Paz has 19 sunny, 7 partly cloudy, 4 cloudy, and 1 rainy 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 La Paz.