August weather forecast and climate
Edgartown, MA

Classy and luxurious houses right on the harbor in Edgartown, Massachusetts, with long piers onto the water
Classy and luxurious houses right on the harbor in Edgartown, Massachusetts, with long piers onto the water

Weather in August

August, the last month of the summer, in Edgartown, is a warm month, with average temperature varying between 73.9°F (23.3°C) and 69.4°F (20.8°C).

Temperature

August is the warmest month, with an average high-temperature of 73.9°F (23.3°C) and an average low-temperature of 69.4°F (20.8°C).

Humidity

In Edgartown, the average relative humidity is 80%.

Rainfall

Months with the least rainfall are August and November Rain falls for 13.3 days and accumulates 1.73" (44mm) of rain.

Snowfall

April through November are months without snowfall.

Ocean temperature

With an average ocean temperature of 68.5°F (20.3°C), August is the month with the warmest seawater.
Note: For most, swimming in 68.5°F (20.3°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

The average length of the day in Edgartown is 13.8h.

Sunshine

With an average of 10.7h of sunshine, August has the most sunshine of the year in Edgartown.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Edgartown?

August is the warmest month in Edgartown, with an average high-temperature of 73.9°F (23.3°C) and an average low-temperature of 69.4°F (20.8°C).

What is the average humidity in August in Edgartown?

In Edgartown, the average relative humidity in August is 80%.

What is the driest month in Edgartown?

Months with the least rainfall are August and November Rain falls for 13.3 days and accumulates 1.73" (44mm) of rain.

How much does it rain in Edgartown in August?

In Edgartown, in August, it is raining for 13.3 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow in Edgartown?

In Edgartown, Massachusetts, snow does not fall in April through November.

What is the month with the warmest ocean in Edgartown?

The month with the warmest seawater in Edgartown, Massachusetts, is August, with an average ocean temperature of 68.5°F (20.3°C).

What is the ocean temperature in August in Edgartown?

In Edgartown, in August, the average water temperature is 68.5°F (20.3°C). Swimming in 68.5°F (20.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in August in Edgartown?

The average length of the day in August in Edgartown, Massachusetts, is 13.8h.

What month has the most sunshine in Edgartown?

With an average of 10.7h of sunshine, August has the most sunshine of the year in Edgartown, Massachusetts.

How long on average sun shines in August in Edgartown?

In Edgartown, Massachusetts, the average sunshine in August is 10.7h.

What is the month with the highest UV index in Edgartown?

July and August, with an average maximum UV index of 6, are months with the highest UV index in Edgartown, Massachusetts.

What is the UV index intensity in August in Edgartown?

In Edgartown, Massachusetts, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.

Average temperature in August
Edgartown, MA

Average temperature in August - Edgartown, MA
  • Average high temperature in August: 73.9°F

The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in August: 69.4°F

The month with the highest average low temperature is August (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in August
Edgartown, MA

Average pressure in August - Edgartown, MA
  • Average pressure in August: 29.98"

The month with the highest atmospheric pressure is November (30.06").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in August
Edgartown, MA

Average wind speed in August - Edgartown, MA
  • Average wind speed in August: 10.9mph

The windiest month (with the highest average wind speed) is January (16.2mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

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Average humidity in August
Edgartown, MA

Average humidity in August - Edgartown, MA
  • Average humidity in August: 80%

Months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in August
Edgartown, MA

Average rainfall in August - Edgartown, MA
  • Average rainfall in August: 1.73"

The wettest month (with the highest rainfall) is October (3.07").
The driest months (with the least rainfall) are August and November (1.73").

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Average rainfall days in August
Edgartown, MA

Average rainfall days in August - Edgartown, MA
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is April (14.5 days).
The month with the least rainy days is February (8.6 days).

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Average snowfall in August
Edgartown, MA

Average snowfall in August - Edgartown, MA
  • Average snowfall in August: 0"

The month with the highest snowfall is March (1.18").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in August
Edgartown, MA

Average snowfall days in August - Edgartown, MA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (5.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in August
Edgartown, MA

Average sea temperature in August - Edgartown, MA
  • Average sea temperature in August: 68.5°F

The best month for swimming (with the highest average sea temperature) is August (68.5°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

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Average daylight in August /
Average sunshine in August
Edgartown, MA

Average daylight in August / Average sunshine in August - Edgartown, MA
  • Average daylight in August: 13.8h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in August: 10.7h

The month with the most sunshine is August (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in August
Edgartown, MA

Average sunshine days in August - Edgartown, MA
  • Average sunshine days in August: 15.9 days

The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is April (13.5 days).

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Average UV index in August
Edgartown, MA

Average UV index in August - Edgartown, MA
  • Average UV index in August: 6

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

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Average cloud cover in August
Edgartown, MA

Average cloud cover in August - Edgartown, MA
  • Average cloud cover in August: 27

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in August
Edgartown, MA

Average visibility in August - Edgartown, MA
  • Average visibility in August: 6mi

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

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