Brewster is a town close to Massachusetts Bay.
August is the month with the warmest water temperature at 67.8°F / 19.9°C.
The coolest month is February with an avg. water temperature of 38.5°F / 3.6°C.
September is the sunniest at 0in / 0mm and January the wettest month with 1.2in / 30.2mm.
The average air temperature is around 72°F / 22.2°C, July is the hottest month in a year. January is the coolest with 31.1°F / -0.5°C average air temperature.
Warm-summer humid continental climate would be the climate here.
June, July, August, September would be the best time to visit.