January in Tsu is the windiest and the coldest month of the year. In January, the weather in Tsu is typically cold. Average daily high temperature in January is about 8 degrees above zero. On average, Tsu has 17 sunny, 8 partly cloudy, and 6 rainy days in January. The rains are usually heavy. January as well as February, March, June, and July is considered the most uncomfortable time to visit Tsu.