August weather forecastEdgartown, MA
August
Weather in August
August carries on July's warmth in Edgartown, albeit with slightly cooler averages between 69.4°F (20.8°C) and 73.9°F (23.3°C). Rainfall for the month registers at about 1.73" (44mm). Despite the slight dip in temperatures, August is still a quintessential summer month with sun, sea, and outdoor activities in full swing. There is plenty of daylight to enjoy Edgartown’s late summer offerings. By August, the reviving spell of summer is deeply cast over Edgartown.Temperature
The temperatures reach their highest averages in August, with highs of 73.9°F (23.3°C) and lows of 69.4°F (20.8°C).Humidity
In August, the average relative humidity in Edgartown is 80%.Rainfall
August and November are months with the least rain when the rain falls for 13.3 days and typically aggregates up to 1.73" (44mm) of rain.Snowfall
April through November are months without snowfall.Ocean temperature
August is the month with the warmest seawater, with an average ocean temperature of 68.5°F (20.3°C).Note: Swimming in 68.5°F (20.3°C) is not an enjoyable experience for most. Breathing becomes progressively more challenging as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Edgartown, the average length of the day in August is 13h and 47min.On the first day of August, sunrise is at 5:37 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 7:16 pm EDT.
Sunshine
With an average of 10.7h of sunshine, August has the most sunshine of the year.UV index
July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
Average pressure in August
Edgartown, 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 (29.94"Hg).
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).
Average humidity in August
Edgartown, MA
- Average humidity in August: 80%
The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).
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").
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).
Average snowfall in August
Edgartown, MA
- Average snowfall in August: 0"
The month with the highest snowfall is March (1.18").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
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).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
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).
Average daylight in August /
Average sunshine in August
Edgartown, MA
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 10h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
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).
Average UV index in August
Edgartown, MA
- Average UV index in August: 6
The months with the highest UV index are 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
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).
Average visibility in August
Edgartown, 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).
