The best time to visit Boston is during summer to mid-fall from June to October. The weather during summer remains pleasant with the temperature ranging from 15 degrees to 28 degrees celsius. Spring is considered as the shoulder season in Boston due to the cold and dry climate, hence from March to May the number of tourists tend to decline during the Fall, so you can get fairly good deals for your stay. The summer is regarded as the peak season here, due to warm and balmy climate that is favourable for outdoor activities. The fall is dry and colder as the winters hence, it is considered as an offseason.