Climate almanac

Seabrook

New Hampshire, United States · 42.89°, -70.87°

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What is the climate like in Seabrook?

The best time to visit Seabrook is typically August – September, with trip comfort peaking in August (6.9/10). Seabrook is warmest in July, when daily highs average 77°F (25°C), and coolest in January, when lows fall to about 26°F (-4°C). The wettest month is typically December and the driest is September; the year sees roughly 46 in (1179 mm) of precipitation.

  • Best time to visitAugust – September — comfort peaks in August (6.9/10)
  • Warmest monthJuly — average high 77°F (25°C)
  • Coolest monthJanuary — average low 26°F (-4°C)
  • Wettest monthDecember (5.1 in (131 mm))
  • Driest monthSeptember (3.0 in (76 mm))
  • Annual precipitation46 in (1179 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromHaverhill, 22 km away (1899-2026)