January in Arrowtown is the windiest month of the year. In January, the weather in Arrowtown is typically warm. Average daily high temperature in January is about 13 degrees above zero. On average, Arrowtown has 15 rainy, 6 sunny, 5 cloudy, and 5 partly cloudy days in January. The rains are usually heavy. January as well as April, May, June, and July is considered the most uncomfortable time to visit Arrowtown.