October in Dartmouth averages a daily high of 14.2°C with nights around 6.2°C. Expect roughly 11.2 wet days totalling 144.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Dartmouth is June–September.
Based on SHEARWATER A, NS CA (7.4km), 1995–2024. 11 years of October data.