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Weather in August in Boston, Massachusetts

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< August >
 
Normal Max/ High Temperature 27°C (80°F)
 
Average Temperature 22°C (72°F)
 
Min/ Low Temperature 18°C (64°F)
Average Sea or Water Temp 19°C(66°F)
 
Normal Precipitation 82mm (3.2in)
Number of Wet Days (probability of rain on a day) 10 (32%)
Average Sunlight per day 09:15
Average Daylight per day 13:51
Sunny (Cloudy) Daylight Hours 68% (32%)
Sun altitude at solar noon on the 21st day.
59.6°


  • The average sea tempeature is 19 °C (66.2 °F).
  • The average temperature in Boston, Massachusetts in August is really warm at 22.2 °C (71.96 °F).
  • Afternoons can be hot with average high temperatures reaching 26.6 °C (79.9 °F).
  • Overnight temperatures are generally very mild with an average low of 17.8 °C (64 °F).
  • In August the mean diurnal temperature range/ variation is 8.8 °C (15.8 °F).
  • The weather in August is dryish with rain at times. Just 82.3mm (3.2in) of water descends across on average 10 days.
  • In August the skies in Boston, Massachusetts are sunny with on average a considerable 9:15 of glaring solar radiation daily.
  • The shortest day is 13:11 long and the longest day is 14:28 long with an average length of 13:51.
  • There are approximately 4:25 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 67.7% of daylight hours and cloudy 32.3% of daylight hours.

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Weather Trend Graph for August in Boston, Massachusetts, Usa

Graph of weather in Boston, Massachusetts in August

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