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Boston Weather in August

August in Boston typically sees daytime highs of 22°C (72°F) and nighttime lows of 13°C (55°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the summer season.

Rainfall in Boston in August

Historically, approximately 13 days this month are expected to have rain, averaging 72 mm (2.8 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Boston in August

August tends to be one of the excellent months in Boston, with 22°C (72°F) in the afternoon and 13°C (55°F) overnight. Experience the summer season in August. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Boston in August

The month enjoys around 195 hours of sunshine, creating mostly sunny days with good weather conditions.

If you favor pleasant temperatures and minimal rainfall, August is one of the best months to visit Boston.

Boston Temperature in August

Min Temperature
13°C (55°F)
Max Temperature
22°C (72°F)
Chance of Rain
43%
Precipitation
72 mm (2.8 in)
Rainy days
13 days
Sunshine
195 hours *
Percentage Sunshine
*
* Data from: Peterborough, the United Kingdom (47 KM, 29 Miles).

Boston Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Boston - and find the best time to visit.

Best Places in the United Kingdom in August

Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in August →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Boston in August

Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Boston in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    6/10
  • Cycling
    9/10
  • Walking
    9/10
  • Camping
    8/10
  • Outdoor sports
    9/10

Boston 3-Day Forecast

More climate data for Boston

Popular in August

Where to go in August - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.