August in Dartmouth averages a daily high of 23.2°C with nights around 14.5°C. Expect roughly 10.1 wet days totalling 81.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Dartmouth is June–September.
Based on SHEARWATER A, NS CA (7.4km), 1995–2024. 10 years of August data.