Boston weather in August
August in Boston averages 80°F by day and 65°F at night, with 3.2 inches of precipitation. It is the 2nd-warmest and 11th-wettest month of the year here.
- Average high
- 80°F-2° vs July
- Average low
- 65°F0 nights below freezing
- Precipitation
- 3.2 in5 days with 0.1 in. or more
- Snow
- 0.0 in4 days at 90°F+
Is August a good time to visit Boston?
Yes. August is one of the most comfortable months in Boston by our rule (highs of 62 to 86°F, lows of 42°F or more and under 4.5 inches of precipitation). The most comfortable months overall are May to October.
Get outside in Boston in August
August is made for being outside. Try Arnold Arboretum, New England Holocaust Memorial, Boston African American National Historic Site, Belle Isle Marsh Reservation. All things to do in Boston.
On August 15 the sun rises at 5:51 am and sets at 7:44 pm, giving 13h 53m of daylight. Daylight all year.
What to pack for Boston in August
- Summer clothes, with a light layer for air conditioning
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
August nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Boston | 80°F | 65°F | 3.2 in | |
| Cambridge, MA | 3 mi | 80°F | 65°F | 3.2 in |
| Somerville, MA | 3 mi | 80°F | 65°F | 3.2 in |
| Newton, MA | 7 mi | 80°F | 65°F | 3.2 in |
| Quincy, MA | 7 mi | 80°F | 65°F | 3.2 in |
| Lynn, MA | 10 mi | 80°F | 65°F | 3.2 in |
| Brockton, MA | 19 mi | 80°F | 62°F | 3.9 in |
Frequently asked questions
What is the weather like in Boston in August?
In August, Boston averages a high of 80°F and a low of 65°F, with 3.2 inches of precipitation (NOAA 1991-2020 normals).
Is August a good time to visit Boston?
Yes. August is one of Boston's most comfortable months by our rule: highs between 62°F and 86°F, lows of 42°F or more and modest rain.
Does it snow in Boston in August?
Rarely. The August snowfall normal is under half an inch.
Before and after: Boston in July and Boston in September. All twelve months: Boston weather by month.
NOAA NCEI 1991-2020 climate normals, station Boston Logan Intl. Airport, MA, 2.5 miles from the city center.