Dartmouth

What is the climate like in Dartmouth?

The best time to visit Dartmouth is typically July – August, with trip comfort peaking in July (7.1/10). Dartmouth is warmest in August, when daily highs average 65°F (18°C), and coolest in January, when lows fall to about 44°F (7°C). The wettest month is typically November and the driest is July; the year sees roughly 36 in (918 mm) of precipitation.

• Best time to visitJuly – August — comfort peaks in July (7.1/10)
• Warmest monthAugust — average high 65°F (18°C)
• Coolest monthJanuary — average low 44°F (7°C)
• Wettest monthNovember (4.7 in (119 mm))
• Driest monthJuly (1.9 in (48 mm))
• Annual precipitation36 in (918 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSlapton, 8 km away (1960-2026)