August weather forecast
South Wellfleet, MA

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Weather in August

August, the last month of the summer in South Wellfleet, is also an agreeable month, with an average temperature varying between 71.1°F (21.7°C) and 67.6°F (19.8°C).

Temperature

August is the month when South Wellfleet experiences its warmest temperatures, averaging a high of 71.1°F (21.7°C) and a low of 67.6°F (19.8°C).

Humidity

The average relative humidity in August in South Wellfleet is 83%.

Rainfall

In South Wellfleet, in August, during 11.5 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. In South Wellfleet, during the entire year, the rain falls for 136.1 days and collects up to 17.24" (438mm) of precipitation.

Snowfall

In South Wellfleet, snow does not fall in May through October.

Daylight

In August, the average length of the day is 13h and 49min.
On the first day of August, sunrise is at 5:34 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:14 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.6h of sunshine.

UV index

The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 6 during August leads to these advisories:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What part of the year is the hottest in South Wellfleet?

August proves to be the warmest month in South Wellfleet, Massachusetts, recording an average peak temperature of 71.1°F (21.7°C) and a minimum temperature of 67.6°F (19.8°C).

What is the average August temperature in South Wellfleet?

The high-temperature, in August, in South Wellfleet, records 71.1°F (21.7°C), while the low-temperature is 67.6°F (19.8°C).

What is the average humidity in August in South Wellfleet?

In South Wellfleet, the average relative humidity in August is 83%.

How much does it rain in South Wellfleet in August?

In South Wellfleet, Massachusetts, in August, during 11.5 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

When it does not snow in South Wellfleet?

In South Wellfleet, Massachusetts, snow does not fall in May through October.

How many hours of daylight does South Wellfleet have in August?

The average day length in August in South Wellfleet, Massachusetts, is 13h and 49min.

When is the sunrise / sunset in August in South Wellfleet?

In August, on the first day of the month, sunrise is at 5:34 am and sunset at 7:58 pm. On the last day of the month, in South Wellfleet, sunrise is at 6:05 am and sunset at 7:14 pm EDT.

What month has the most sunshine in South Wellfleet?

The month with the most sunshine in South Wellfleet, Massachusetts, is August, with an average of 10.6h of sunshine.

How long on average sun shines in August in South Wellfleet?

In August, the average sunshine duration is 10.6h.

What are the months with the highest UV index in South Wellfleet?

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

What is the UV index intensity in August in South Wellfleet?

The average daily maximum UV index in August in South Wellfleet, Massachusetts, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to 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
South Wellfleet, MA

Average temperature in August - South Wellfleet, MA
  • Average high temperature in August: 71.1°F

The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in August: 67.6°F

The month with the highest average low temperature is August (67.6°F).
The coldest months (with the lowest average low temperature) are January and February (31.6°F).

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Average pressure in August
South Wellfleet, MA

Average pressure in August - South Wellfleet, 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).

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Average wind speed in August
South Wellfleet, MA

Average wind speed in August - South Wellfleet, MA
  • Average wind speed in August: 11.6mph

The windiest month (with the highest average wind speed) is January (18.5mph).
The calmest months (with the lowest average wind speed) are July and August (11.6mph).

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Average humidity in August
South Wellfleet, MA

Average humidity in August - South Wellfleet, MA
  • Average humidity in August: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in August
South Wellfleet, MA

Average rainfall in August - South Wellfleet, MA
  • Average rainfall in August: 1.26"

The wettest month (with the highest rainfall) is October (2.17").
The driest months (with the least rainfall) are February and November (1.18").

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Average rainfall days in August
South Wellfleet, MA

Average rainfall days in August - South Wellfleet, MA
  • Average rainfall days in August: 11.5 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in August
South Wellfleet, MA

Average snowfall in August - South Wellfleet, MA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
South Wellfleet, MA

Average snowfall days in August - South Wellfleet, MA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
South Wellfleet, MA

Average daylight in August / Average sunshine in August - South Wellfleet, 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 12min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days in August
South Wellfleet, MA

Average sunshine days in August - South Wellfleet, MA
  • Average sunshine days in August: 18.2 days

The month with the most sunshine days is August (18.2 days).
The month with the least sunshine days is December (13.1 days).

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Average UV index in August
South Wellfleet, MA

Average UV index in August - South Wellfleet, 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).

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Average cloud cover in August
South Wellfleet, MA

Average cloud cover in August - South Wellfleet, MA
  • Average cloud cover in August: 28

The month with the most cloud cover is December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in August
South Wellfleet, MA

Average visibility in August - South Wellfleet, 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).

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South Wellfleet, Massachusetts, USA

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