This post is an overview of the August weather in Boston, with tips on how to dress and things to do to help make the most of your trip.
HOW HOT IS BOSTON IN AUGUST?
August in Boston features mostly warm afternoons and early evenings with comfortable late evenings and early mornings.
Afternoon high temperatures tend to be in the lower 80s F (27-28 C) early in the month falling into the mid to upper 70s F (24-26 C) near the end of the month.
A few of the warmer afternoons can reach up into the lower 90s F (32-33 C) with 2-3 days likely reaching at least 90 F (about 32 C).
The all-time record high temperature in Boston during August is 102 F (38.9 C).
Late evenings and early morning temperatures tend to be in the mid to upper 60s F (19-20 C) early in August but fall into the mid-lower 60s F (17-18 C) towards the end of the month.
A few of the cooler mornings near the end of the month can see temperatures dip down into the mid-50s F (12-13 C).
The all-time record low temperature for Boston during August is 47 F (8.3 C).
August days can range from humid to comfortable so expect about 7-12 days, on average, being humid or muggy while 10-16 days will likely be comfortable to dry.
It is more likely to encounter a humid day early in the month and less likely near the end of the month.
In short, August is the best month of the year to take a free walking tour.
HOW MUCH SUN & RAIN?
About 18 days, on average, in August will see either sunny or at least partly sunny skies.
Some rain will fall on about 9-10 days this month; however, significant rainfalls of at least 0.5 inches (about 13 mm) only occur on 2 days.
You can expect about 14.5 hours of daylight early in August, falling to a little over 13 hours by the end of the month.
So, August is a good month to explore this great city.
Seasonal Outlook - July to September
There is a 92% chance for normal to above-normal temperatures with near-normal rainfall.
WHAT TO WEAR IN AUGUST?
Summer weather prevails this month so bring the appropriate summer gear which will do well for most days.
A few of the cooler evenings or mornings might require a sweater or a windbreaker and don’t forget some good walking shoes.
WHAT TO DO
Below the video, we list our top 10 things to do this month.
Be sure to read our full post on what to do in Boston in August, which includes free things to do, night and family-friendly activities and attractions.
You should also check out our definitive post on the best things to do in Boston.
And if you are planning on visiting many of Boston’s top attractions, then you should consider a tourist discount pass.
These passes could save you up to 50% of retail ticket prices to tours, attractions, and restaurants.
Some of the fun activities we talk about include:
- See Aerosmith Live
- Watch Hello Dolly or Another Musical
- Major Sporting Events
- Outdoor Movies
- Free Festivals
- Attend the Boston Seafood Festival
- Take a Free Walking Tour
- Cruise the Charles River
Fred Pickhardt
Ocean Weather Services
