November in Oamaru is the cloudiest month of the year. In November, the weather in Oamaru is typically warm. Average daily high temperature in November is about 15 degrees above zero. On average, Oamaru has 12 partly cloudy, 7 rainy, 7 sunny, and 4 cloudy days in November. The rains are usually light. November as well as May, June, July, and August is considered the most uncomfortable time to visit Oamaru.