January in Te Anau is the rainiest and the windiest month of the year. In January, the weather in Te Anau is typically warm. Average daily high temperature in January is about 14 degrees above zero. On average, Te Anau has 23 rainy, 4 sunny, 2 cloudy, and 2 partly cloudy days in January. The rains are usually heavy. January as well as March, April, May, and June is considered the most uncomfortable time to visit Te Anau.