Climate almanac

Brunswick

Maine, United States · 43.91°, -69.97°

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What is the climate like in Brunswick?

The best time to visit Brunswick is typically August – September, with trip comfort peaking in September (6.8/10). Brunswick is warmest in July, when daily highs average 79°F (26°C), and coolest in January, when lows fall to about 19°F (-7°C). The wettest month is typically December and the driest is September; the year sees roughly 44 in (1117 mm) of precipitation.

  • Best time to visitAugust – September — comfort peaks in September (6.8/10)
  • Warmest monthJuly — average high 79°F (26°C)
  • Coolest monthJanuary — average low 19°F (-7°C)
  • Wettest monthDecember (5.0 in (127 mm))
  • Driest monthSeptember (2.9 in (73 mm))
  • Annual precipitation44 in (1117 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromBath, 9 km away (2011-2026)