The temperatures in Boston in August are comfortable with low of 66°F and and high up to 82°F.
You can expect about 3 to 8 days of rain in Boston during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Boston in August 2025.
If you’re planning to visit Boston in the near future, we highly recommend that you review the 14 day weather forecast for Boston before you arrive.
Temperatures
82° / 66°
Rainy Days
4
Snowy Days
0
Dry Days
27
Rainfall
3.9
in
Sun Hours
10.7
Hrs
