Climate in Boston (Massachusetts), United States of America

The best time of year to visit Boston in the United States of America

Since Boston is bordered by Boston Harbor and the Atlantic Ocean, its coastal climate tends to be more moderate than inland locations. That´s why Boston rarely experiences either extreme heat or cold. In the winter, the first freezing temperatures usually occur in early November, but the temperatures are modified considerably by the nearness of the relatively warm ocean. Cold weather usually fades out by early April, and Boston typically enjoys a spectacular, colorful spring with moderate temperatures. Although it can get quite warm in the summer, the hot afternoons frequently are tempered by the eastern sea breezes, as air flows inland from the cooler surfaces of the ocean.

Boston has no true dry season as it rains intermittently throughout the year. Much of the rainfall during the summer and early fall comes from showers and thunderstorms. The main snow season occurs from December through March.

During the months of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

Which is the warmest month in Boston?
July has an average maximum temperature of 29°C and is the warmest month of the year.

Which is the coldest month in Boston?
The coldest month is February with an average maximum temperature of 3°C.

Which is the wettest month in Boston?
December tops the wettest month list with 132 mm of rainfall.

Which is the driest month in Boston?
September is the driest month with 79 mm of precipitation.

Which is the sunniest month in Boston?
May is the sunniest month with an average of 301 hours of sunshine.

No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.