November in Oshawa averages a daily high of 7.8°C with nights around 1.1°C. Expect roughly 11.7 wet days totalling 74.1mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Oshawa is June–September.
Based on OSHAWA WPCP, ON CA (3.9km), 1995–2024. 22 years of November data.