January in Merida is the sunniest month of the year. In January, the weather in Merida is typically warm. Average daily high temperature in January is about 13 degrees above zero. On average, Merida has 29 rainy, 1 sunny, and 1 cloudy day in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Merida.