January in Ixtapa is the coldest month of the year. In January, the weather in Ixtapa is typically warm. Average daily high temperature in January is about 23 degrees above zero. On average, Ixtapa has 13 sunny, 11 partly cloudy, 6 rainy, and 1 cloudy day in January. The rains are usually light. January as well as February and December is considered the most comfortable time to visit Ixtapa.