Boston Weather: August
 |
Average Day Temperature: | 83.7°F |
|
Average Night Temperature: | 68.8°F |
|
Sea Water Temperature: | 69.5°F |
|
Number of Sunny Days: | 16 days |
| Sunshine Hours: | 13.2 - 14.4 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.7 in | |
| detailed information | ||
forecast
| Boston |
Temperature
| Boston |
Air Temperature in August, °F
The highest day temperature in August 2025 was 98°F. The lowest night temperature was 58°F. The average values for day and night temperatures during August were 81.7°F и 66.9°F respectivly.
Boston Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for Boston was 69.2°F. The maximum and minimum values were 66.6°F and 72.8°F respectively.
Most of the days in August are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in August, in
Precipitation total in August for Boston is 1.7 in. It makes august one of the least rainy months of the year.
The average wind speed in August is 7.4 mph. It makes August the most windless month of the year for Boston.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Boston in August is 8.9 hours.
Boston on the Weather Map
| Chicago |  |
-2 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+44 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach |  |
+80 |
| New York | |
+18 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0300 |  |
8°F | SE 11 mph |
| 0600 | |
6°F | SE 7 mph |
| 0900 |  |
10°F | E 4 mph |
| 1200 | |
20°F | NE 6 mph |
| 1500 | |
24°F | NE 8 mph |
| 1800 | |
22°F | NE 6 mph |
| 2100 |  |
20°F | NE 6 mph |
| 0000 |  |
20°F | NE 5 mph |