January in Montagu is the sunniest and the warmest month of the year. In January, the weather in Montagu is typically warm. Average daily high temperature in January is about 26 degrees above zero. On average, Montagu has 22 sunny, 7 partly cloudy, and 2 rainy days in January. The rains are usually light. January as well as March, April, November, and December is considered the most comfortable time to visit Montagu.