August weather forecast
Mattapoisett, MA

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Weather in August

August, the last month of the summer in Mattapoisett, is another warm month, with temperature in the range of an average high of 78.3°F (25.7°C) and an average low of 65.8°F (18.8°C).

Temperature

August's presence marks an average high-temperature of a still warm 78.3°F (25.7°C), subtly varied from July's 78.4°F (25.8°C). Mattapoisett usually reports an average low-temperature of 65.8°F (18.8°C) during the month of August.

Humidity

In Mattapoisett, the average relative humidity in August is 78%.

Rainfall

In Mattapoisett, in August, during 12.1 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 133.2 rainfall days, and 17.2" (437mm) of precipitation is accumulated.

Snowfall

May through October 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 is not a pleasurable activity for the majority in water at 68.5°F (20.3°C). Breathing control gets harder as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).

Daylight

In August, the average length of the day is 13h and 48min.
On the first day of the month, sunrise is at 5:38 am and sunset at 8:00 pm. On the last day of August, sunrise is at 6:08 am and sunset at 7:17 pm EDT.

Sunshine

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

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Mattapoisett. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 6 during August leads to these advisories:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the temperature in August in Mattapoisett?

The high-temperature, in August, in Mattapoisett, is 78.3°F (25.7°C), while the low-temperature averages to 65.8°F (18.8°C).

What is the average humidity in August in Mattapoisett?

The average relative humidity in August in Mattapoisett, Massachusetts, is 78%.

How much does it rain in Mattapoisett in August?

In Mattapoisett, in August, it is raining for 12.1 days, with typically 1.34" (34mm) of accumulated precipitation.

When it does not snow in Mattapoisett?

In Mattapoisett, snow does not fall in May through October.

What is the month with the warmest ocean in Mattapoisett?

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

What is the ocean temperature in August in Mattapoisett?

In Mattapoisett, the average seawater temperature in August is 68.5°F (20.3°C). For swimming, a surface water temperature of 68.5°F (20.3°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 Mattapoisett?

The average day length in August is 13h and 48min.

What time are sunrise and sunset in August in Mattapoisett?

On the first day of August in Mattapoisett, sunrise is at 5:38 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 7:17 pm EDT.

What month has the most sunshine in Mattapoisett?

The month with the most sunshine is August, with an average of 10.6h of sunshine.

How many hours of sunshine does Mattapoisett have in August?

In Mattapoisett, Massachusetts, the average sunshine duration in August is 10.6h.

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

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

How high is the UV index in August in Mattapoisett?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Mattapoisett, MA

Average temperature in August - Mattapoisett, MA
  • Average high temperature in August: 78.3°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in August
Mattapoisett, MA

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

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Mattapoisett, MA

Average wind speed in August - Mattapoisett, MA
  • Average wind speed in August: 8mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (8mph).

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Average humidity in August
Mattapoisett, MA

Average humidity in August - Mattapoisett, MA
  • Average humidity in August: 78%

The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are March, April and November (74%).

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Average rainfall in August
Mattapoisett, MA

Average rainfall in August - Mattapoisett, MA
  • Average rainfall in August: 1.34"

The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is September (1.06").

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Average rainfall days in August
Mattapoisett, MA

Average rainfall days in August - Mattapoisett, MA
  • Average rainfall days in August: 12.1 days

The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in August
Mattapoisett, MA

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

The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Mattapoisett, MA

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

The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in August
Mattapoisett, MA

Average sea temperature in August - Mattapoisett, MA
  • Average sea temperature in August: 68.4°F

The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).

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

Average daylight in August / Average sunshine in August - Mattapoisett, 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 February (Average sunshine: 4h and 48min).

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Average sunshine days in August
Mattapoisett, MA

Average sunshine days in August - Mattapoisett, MA
  • Average sunshine days in August: 16.1 days

The months with the most sunshine days are November and December (18.3 days).
The month with the least sunshine days is April (14.4 days).

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Average UV index in August
Mattapoisett, MA

Average UV index in August - Mattapoisett, 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).

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Average cloud cover in August
Mattapoisett, MA

Average cloud cover in August - Mattapoisett, MA
  • Average cloud cover in August: 28

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in August
Mattapoisett, MA

Average visibility in August - Mattapoisett, 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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Mattapoisett, Massachusetts, USA

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