October in Tomakomai is the sunniest month of the year. In October, the weather in Tomakomai is typically warm. Average daily high temperature in October is about 14 degrees above zero. On average, Tomakomai has 13 rainy, 10 sunny, 7 partly cloudy, and 1 cloudy day in October. The rains are usually heavy. October as well as March, April, May, and June is considered the most uncomfortable time to visit Tomakomai.