Swimming in Boston in august 2025: Average sea temperature in august and tide times in august 2025
Average sea temperature in Boston in august 2025.
In august, according to seasonal norms, the sea temperature in Boston is:
Minimum: 66°F
Average: 68°F
Maximum: 71°F
Other useful seasonal weather averages in august:
- Outside temperature: 70°F to 83°F
- Most common weather: "Clear/Sunny"
- The wind blows at 13.1mph
- It rains a total of 3.9in, over 5 day(s).
Should we swim in Boston in august?
Yes... and no. The water temperature in Boston in august is cool
Swimming in august on the beaches of Boston is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 71°F, it can also be as low as 66°F! Note that the average is 68°F.
Note also that in august, the climate is good with an average outside temperature of 77°F, 3.9in of precipitation (over 5 days) and 79.07 % humidity.
Water and normal seasonal temperatures in Boston in august
| August | |||
| Average sea temperature | 68°F | ||
| Minimum sea temperature | 66°F | ||
| Maximum sea temperature | 71°F | ||
| Average outside temperature | 77°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 70°F | ||
| Wind speed | 8.7mph | ||
| Wind temperature | 70°F | ||
| Precipitation | 3.9in | ||
| Number of days of rain | 5 jour(s) (17%) | ||
| Humidity | 80% | ||
| Visibility in kilometers | 9.04km | ||
| Cloud cover | 32% | ||
| Our opinion | cool swimming |
Chart of the tides in august 2025
Tide times in august 2025 in Boston
Swim elsewhere in the United States (USA) in august
| City | Average T° | Min. T° | Max. T° | Our opinion | California in august | 68°F | 71°F | cool swimming | Washington D. C. in august | 79°F | 81°F | pleasant swimming | Miami (Florida) in august | 87°F | 88°F | ideal swimming | New York City in august | 74°F | 78°F | pleasant swimming | Seattle in august | 54°F | 56°F | freezing swimming | Houston in august | 87°F | 90°F | ideal swimming | Long Beach (Washington) in august | 58°F | 61°F | freezing swimming | Myrtle Beach in august | 83°F | 85°F | ideal swimming | Philadelphia in august | 77°F | 81°F | pleasant swimming | Portland in august | 57°F | 60°F | freezing swimming | Atlantic City in august | 77°F | 82°F | pleasant swimming | Baltimore in august | 78°F | 81°F | pleasant swimming | Bar Harbor (Maine) in august | 57°F | 62°F | freezing swimming | Brooklyn in august | 74°F | 78°F | pleasant swimming | Cape Cod National Seashore in august | 68°F | 71°F | cool swimming | Carolina Beach in august | 83°F | 85°F | ideal swimming | Gulf Shores (Alabama) in august | 87°F | 90°F | ideal swimming | Hampton Beach in august | 67°F | 70°F | cool swimming | Maryland in august | 78°F | 80°F | pleasant swimming | Mobile (Alabama) in august | 87°F | 89°F | ideal swimming |
Swim in the United States (USA) in august: sea temperature by city