In January, the weather in Oaxaca de Juárez is typically warm. Average daily high temperature in January is about 21 degrees above zero. On average, Oaxaca de Juárez has 18 sunny, 10 partly cloudy, 2 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 Oaxaca de Juárez.