Boston
August
Weather in Boston for August 2025
Your guide to Boston weather in August - trends and predictions
In general, the average temperature in Boston at the beginning of August is 26.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 24.7 °F by the end of August.
Expect significant rainfall in Boston during August, with an average of 16 rainy days.
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15
Dry days
16
Rainy days
0
Snow days
25°/17°
Temperatures
16 km/h
Avg max wind
75 %
Avg humidity
Boston in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2  27° | 3 29° | ||||
| 4  26° | 5  29° | 6  24° | 7 22° | 8 25° | 9 26° | 10 29° |
| 11 28° | 12 26° | 13 28° | 14 27° | 15 23° | 16 24° | 17 26° |
| 18 27° | 19 24° | 20  24° | 21 24° | 22 23° | 23 25° | 24 27° |
| 25 24° | 26 27° | 27 25° | 28  26° | 29  22° | 30 25° | 31 24° |
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Temperatures trend during August in Boston
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Cloudy | 29° /18° | 0 mm | 7 | |
| Aug. 2 | Partly cloudy | 27° /17° | 4 mm | 7 | |
| Aug. 3 | Cloudy | 29° /17° | 3.4 mm | 7 | |
| Aug. 4 | Moderate or heavy rain shower | 26° /19° | 13.4 mm | 6 | |
| Aug. 5 | Patchy rain possible | 29° /18° | 10.3 mm | 7 | |
| Aug. 6 | Overcast | 24° /16° | 6.2 mm | 6 | |
| Aug. 7 | Moderate or heavy rain shower | 22° /16° | 5.6 mm | 5 | |
| Aug. 8 | Moderate or heavy rain shower | 25° /17° | 5.6 mm | 6 | |
| Aug. 9 | Patchy rain possible | 26° /17° | 2.5 mm | 6 | |
| Aug. 10 | Patchy rain possible | 29° /19° | 8.5 mm | 6 | |
| Aug. 11 | Overcast | 28° /17° | 13.9 mm | 7 | |
| Aug. 12 | Partly cloudy | 26° /16° | 0 mm | 6 | |
| Aug. 13 | Moderate or heavy rain shower | 28° /17° | 4.3 mm | 7 | |
| Aug. 14 | Cloudy | 27° /17° | 0.1 mm | 7 | |
| Aug. 15 | Moderate or heavy rain shower | 23° /17° | 17.5 mm | 6 | |
| Aug. 16 | Patchy rain possible | 24° /17° | 0.1 mm | 6 | |
| Aug. 17 | Overcast | 26° /17° | 0 mm | 6 | |
| Aug. 18 | Moderate or heavy rain shower | 27° /18° | 5.6 mm | 7 | |
| Aug. 19 | Patchy rain possible | 24° /16° | 5.4 mm | 5 | |
| Aug. 20 | Sunny | 24° /15° | 0.7 mm | 6 | |
| Aug. 21 | Patchy rain possible | 24° /15° | 2.9 mm | 5 | |
| Aug. 22 | Overcast | 23° /14° | 0.6 mm | 6 | |
| Aug. 23 | Sunny | 25° /13° | 0 mm | 7 | |
| Aug. 24 | Overcast | 27° /15° | 0 mm | 6 | |
| Aug. 25 | Moderate or heavy rain shower | 24° /16° | 14.1 mm | 6 | |
| Aug. 26 | Light rain shower | 27° /17° | 18.3 mm | 6 | |
| Aug. 27 | Overcast | 25° /16° | 0 mm | 6 | |
| Aug. 28 | Fog | 26° /16° | 0.3 mm | 6 | |
| Aug. 29 | Moderate rain | 22° /16° | 3.2 mm | 5 | |
| Aug. 30 | Light rain shower | 25° /15° | 3.1 mm | 6 | |
| Aug. 31 | Sunny | 24° /14° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Boston in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Boston forecast closer to your planned date for the most up-to-date weather information.
Boston in August - FAQ
What are the expected maximum and minimum temperatures in Boston during August?
During August, expect a variety of temperatures with highs around 25° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Boston during August?
Significant rainfall exceeding 192.7 mm is expected in Boston during August, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Boston during August?
The average wind speed in Boston during August is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
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