Harwich

What is the climate like in Harwich?

The best time to visit Harwich is typically June – August, with trip comfort peaking in August (6.9/10). Harwich is warmest in August, when daily highs average 71°F (22°C), and coolest in February, when lows fall to about 33°F (1°C). The wettest month is typically October and the driest is June; the year sees roughly 49 in (1248 mm) of precipitation.

• Best time to visitJune – August — comfort peaks in August (6.9/10)
• Warmest monthAugust — average high 71°F (22°C)
• Coolest monthFebruary — average low 33°F (1°C)
• Wettest monthOctober (5.8 in (147 mm))
• Driest monthJune (2.7 in (68 mm))
• Annual precipitation49 in (1248 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromHyannis, 19 km away (1893-2026)