August weather forecast
Wellfleet, MA

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Weather in August

As the last mere weeks of summer approach, August in Wellfleet remains blissfully warm, mimicking the prime conditions of July. Notably, sea temperature reaches the year's high of 67.5°F (19.7°C) in August, granting perfect conditions for a wide spectrum of water sports. The cloud cover begins to thicken, suggesting an upcoming shift in weather patterns. This month often serves as the unofficial summer end, before welcoming the start of autumn in September.

Temperature

In Wellfleet, August records the highest average temperatures, peaking at 71.1°F (21.7°C) and reaching a low of 67.6°F (19.8°C).

Humidity

The average relative humidity in August in Wellfleet, Massachusetts, is 83%.

Rainfall

In Wellfleet, Massachusetts, during August, the rain falls for 11.5 days and regularly aggregates up to 1.26" (32mm) of precipitation. In Wellfleet, during the entire year, the rain falls for 136.1 days and collects up to 17.24" (438mm) of precipitation.

Snowfall

May through October are months without snowfall in Wellfleet.

Ocean temperature

August is the month with the warmest seawater, with an average ocean temperature of 67.5°F (19.7°C).
Note: Most people do not enjoy swimming in water of 67.5°F (19.7°C). Breathing control becomes harder as the temperature descends from 69.8°F (21°C) to 59°F (15°C).

Daylight

The average length of the day in August in Wellfleet is 13h and 49min.
On the first day of August in Wellfleet, 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

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

UV index

The months with the highest UV index in Wellfleet are July and August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
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Frequently asked questions

What month is the hottest in Wellfleet?

August, recording an average high temperature of 71.1°F (21.7°C) and a low temperature of 67.6°F (19.8°C), is Wellfleet's warmest month.

What are the temperatures in Wellfleet in August?

During August, Wellfleet experiences an average high-temperature of 71.1°F (21.7°C) and a low-temperature of 67.6°F (19.8°C).

What is the average humidity in August in Wellfleet?

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

How much does it rain in Wellfleet in August?

In August, in Wellfleet, the rain falls for 11.5 days. Throughout August, 1.26" (32mm) of precipitation is accumulated.

When it does not snow in Wellfleet?

May through October are months without snowfall in Wellfleet.

When is the ocean warmest in Wellfleet?

With an average ocean temperature of 67.5°F (19.7°C), August is the month with the warmest seawater in Wellfleet, Massachusetts.

How cold is the water in August in Wellfleet?

In Wellfleet, Massachusetts, the average seawater temperature in August is 67.5°F (19.7°C). For swimming, a surface water temperature of 67.5°F (19.7°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

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

In Wellfleet, Massachusetts, the average day length in August is 13h and 49min.

When is the sunrise / sunset in August in Wellfleet?

On the first day of August in Wellfleet, 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.

What month has the most sunshine in Wellfleet?

With an average of 10.6h of sunshine, August has the most sunshine of the year in Wellfleet.

How long on average sun shines in August in Wellfleet?

In August, the average sunshine duration is 10.6h.

When is the highest UV index in Wellfleet?

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

What is the UV index reading in August in Wellfleet?

In August, the average daily maximum UV index in Wellfleet is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
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
Wellfleet, MA

Average temperature in August - 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
Wellfleet, MA

Average pressure in August - 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
Wellfleet, MA

Average wind speed in August - 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
Wellfleet, MA

Average humidity in August - 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
Wellfleet, MA

Average rainfall in August - 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
Wellfleet, MA

Average rainfall days in August - 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
Wellfleet, MA

Average snowfall in August - 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
Wellfleet, MA

Average snowfall days in August - 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 sea temperature in August
Wellfleet, MA

Average sea temperature in August - Wellfleet, MA
  • Average sea temperature in August: 67.5°F

The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

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

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

Average sunshine days in August - 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
Wellfleet, MA

Average UV index in August - 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
Wellfleet, MA

Average cloud cover in August - 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
Wellfleet, MA

Average visibility in August - 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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Wellfleet, Massachusetts, USA

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