Avg weather in September
    View live forecast
    10 Hrsper day
    38 mmper month
    74 %avg
    7 Mphavg

    Boston weather September

    What’s the weather like in Boston in September?

    Boston is known for its modern skyscrapers and rich heritage that’s evident around every street corner and with each colonial building. The city offers a huge range of attractions and things to see and do during your stay. This includes everything from the Freedom Trail to Faneuil Hall, a thriving marketplace in the city centre.

    Geographical influences

    Boston weather in September is very warm with temperatures reaching the low-twenties during the day. However, at night it can be very cold so pack for fluctuating temperatures and check the forecast in advance. When you arrive in September, head to Boston’s Charles River and enjoy the different events held during the famous Cambridge River Festival. Taste the local cuisine and soak up the city culture before heading to the city centre for some shopping and sightseeing.


    September has an average temperature of 14°C at night that increases to 18°C at peak times of the day. Winds can travel as fast as 8mph with humidity levels of around 76%. There are 12 hours of sunshine per day, which is plenty of time to enjoy a walk in the park and take day trips to nearby towns. The average rainfall is around 70mm spread over 12 days of the month.

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