November in Nagaoka is the rainiest month of the year. In November, the weather in Nagaoka is typically warm. Average daily high temperature in November is about 14 degrees above zero. On average, Nagaoka has 19 rainy, 6 partly cloudy, and 5 sunny days in November. The rains are usually heavy. November as well as January, February, March, and July is considered the most uncomfortable time to visit Nagaoka.