January in Dartmouth averages a daily high of 0°C with nights around -8.2°C. Expect roughly 15.3 wet days totalling 119.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Dartmouth is June–September.
Based on SHEARWATER A, NS CA (7.4km), 1995–2024. 12 years of January data.