January in San José del Cabo is the coldest month of the year. In January, the weather in San José del Cabo is typically warm. Average daily high temperature in January is about 26 degrees above zero. On average, San José del Cabo has 18 sunny, 8 partly cloudy, 4 cloudy, and 1 rainy day in January. The rains are usually light. January as well as February and December is considered the most comfortable time to visit San José del Cabo.