January in Merimbula is the warmest month of the year. In January, the weather in Merimbula is typically warm. Average daily high temperature in January is about 23 degrees above zero. On average, Merimbula has 16 partly cloudy, 13 sunny, and 2 rainy days in January. The rains are usually light. January as well as March is considered the most comfortable time to visit Merimbula.