October in Morioka is the sunniest month of the year. In October, the weather in Morioka is typically warm. Average daily high temperature in October is about 12 degrees above zero. On average, Morioka has 16 rainy, 8 sunny, 6 partly cloudy, and 1 cloudy day in October. The rains are usually heavy. October as well as March, April, June, and July is considered the most uncomfortable time to visit Morioka.