February in Mae Sai is the sunniest month of the year. In February, the weather in Mae Sai is typically warm. Average daily high temperature in February is about 27 degrees above zero. On average, Mae Sai has 20 sunny, 8 partly cloudy, and 1 rainy day in February. The rains are usually light. February as well as January and December is considered the most comfortable time to visit Mae Sai.