January in Heredia is the sunniest month of the year. In January, the weather in Heredia is typically warm. Average daily high temperature in January is about 22 degrees above zero. On average, Heredia has 10 partly cloudy, 8 sunny, 7 cloudy, and 6 rainy days in January. The rains are usually light. January as well as February and March is considered the most comfortable time to visit Heredia.