January in San Juan de la Maguana is the sunniest and the coldest month of the year. In January, the weather in San Juan de la Maguana is typically warm. Average daily high temperature in January is about 22 degrees above zero. On average, San Juan de la Maguana has 19 partly cloudy, 8 sunny, 3 rainy, and 1 cloudy day in January. The rains are usually light. January as well as December is considered the most comfortable time to visit San Juan de la Maguana.