August weather forecast
East Boston, MA

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Weather in August

The last month of the summer, August, is also a moderately hot month in East Boston, Massachusetts, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 80.4°F (26.9°C).

Temperature

The onset of August marks an average high-temperature of a still warm 80.4°F (26.9°C), hardly differing from July's 81.7°F (27.6°C). The month of August records an average low-temperature of 64°F (17.8°C).

Humidity

In August, the average relative humidity is 72%.

Rainfall

In East Boston, in August, it is raining for 11.7 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, there are 141.4 rainfall days, and 27.2" (691mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In East Boston, the average length of the day in August is 13h and 51min.
On the first day of the month, sunrise is at 5:37 am and sunset at 8:03 pm. On the last day of August, in East Boston, sunrise is at 6:09 am and sunset at 7:19 pm EDT.

Sunshine

The month with the most sunshine is August, with an average of 10.5h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Frequently asked questions

What are the temperatures in August?

In August, in East Boston, the average high-temperature is 80.4°F (26.9°C), and the average low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in July is calculated to be 86°F (30°C).

What is the average humidity in August?

In August, the average relative humidity is 72%.

How many days does it rain in August?

In East Boston, during August, the rain falls for 11.7 days and regularly aggregates up to 1.61" (41mm) of precipitation.

When it does not snow?

June through September are months without snowfall in East Boston.

What is the average length of the day in August?

In August, the average day length is 13h and 51min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:37 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:19 pm EDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.5h of sunshine.

How long on average sun shines in August?

The average sunshine duration in August is 10.5h.

When is the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
East Boston, MA

Average temperature in August - East Boston, MA
  • Average high temperature in August: 80.4°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in August
East Boston, MA

Average pressure in August - East Boston, MA
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
East Boston, MA

Average wind speed in August - East Boston, MA
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in August
East Boston, MA

Average humidity in August - East Boston, MA
  • Average humidity in August: 72%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (69%).

Average rainfall in August
East Boston, MA

Average rainfall in August - East Boston, MA
  • Average rainfall in August: 1.61"

The wettest months (with the highest rainfall) are March, April and December (2.91").
The driest month (with the least rainfall) is September (1.26").

Average rainfall days in August
East Boston, MA

Average rainfall days in August - East Boston, MA
  • Average rainfall days in August: 11.7 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in August
East Boston, MA

Average snowfall in August - East Boston, MA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
East Boston, MA

Average snowfall days in August - East Boston, MA
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
East Boston, MA

Average daylight in August / Average sunshine in August - East Boston, MA
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 10h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in August
East Boston, MA

Average sunshine days in August - East Boston, MA
  • Average sunshine days in August: 17 days

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (13 days).

Average UV index in August
East Boston, MA

Average UV index in August - East Boston, MA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in August
East Boston, MA

Average cloud cover in August - East Boston, MA
  • Average cloud cover in August: 32

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in August
East Boston, MA

Average visibility in August - East Boston, MA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

East Boston, Massachusetts, USA

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