January in La Paz is the coldest month of the year. In January, the weather in La Paz is typically warm. Average daily high temperature in January is about 21 degrees above zero. On average, La Paz has 18 sunny, 8 partly cloudy, 4 cloudy, and 1 rainy day in January. The rains are usually light. January as well as February, March, April, and May is considered the most comfortable time to visit La Paz.