August weather forecast
Harwich Port, MA

Weather in August

August, the last month of the summer, in Harwich Port, is another pleasant month, with average temperature ranging between min 68.2°F (20.1°C) and max 71.6°F (22°C).

Temperature

August is the warmest month, with an average high-temperature of 71.6°F (22°C) and an average low-temperature of 68.2°F (20.1°C).

Humidity

The average relative humidity in Harwich Port is 82%.

Rainfall

In Harwich Port, during 12.1 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 142.4 rainfall days, and 22.09" (561mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Harwich Port.

Ocean temperature

With an average ocean temperature of 67.5°F (19.7°C), August is the month with the warmest seawater in Harwich Port.
Note: 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).

Daylight

The average length of the day in Harwich Port, Massachusetts, is 13.8h.

Sunshine

The month with the most sunshine is August, with an average of 10.7h of sunshine.

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 unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 Harwich Port?

The warmest month is August, with an average high-temperature of 71.6°F (22°C) and an average low-temperature of 68.2°F (20.1°C).

What is the average humidity in August in Harwich Port?

The average relative humidity in August is 82%.

How many days does it rain in August in Harwich Port?

In Harwich Port, Massachusetts, in August, during 12.1 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When it does not snow in Harwich Port?

May through October are months without snowfall in Harwich Port, Massachusetts.

When is the ocean warmest in Harwich Port?

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

How cold is the water in August in Harwich Port?

In Harwich Port, in August, the average water temperature 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 Harwich Port?

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

What month has the most sunshine in Harwich Port?

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

How long on average sun shines in August in Harwich Port?

The average sunshine in August is 10.7h.

What are the months with the highest UV index in Harwich Port?

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

How high is the UV index in August in Harwich Port?

In August, the average daily maximum UV index in Harwich Port, Massachusetts, is 6. A UV Index of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV rays.

Average temperature in August
Harwich Port, MA

Average temperature in August - Harwich Port, MA
  • Average high temperature in August: 71.6°F

The warmest month (with the highest average high temperature) is August (71.6°F).
Months with the lowest average high temperature are January and February (39°F).

  • Average low temperature in August: 68.2°F

The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).

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Average pressure in August
Harwich Port, MA

Average pressure in August - Harwich Port, 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 (29.93").

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Average wind speed in August
Harwich Port, MA

Average wind speed in August - Harwich Port, MA
  • Average wind speed in August: 11.4mph

The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).

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Average humidity in August
Harwich Port, MA

Average humidity in August - Harwich Port, MA
  • Average humidity in August: 82%

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

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Average rainfall in August
Harwich Port, MA

Average rainfall in August - Harwich Port, MA
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").

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Average rainfall days in August
Harwich Port, MA

Average rainfall days in August - Harwich Port, MA
  • Average rainfall days in August: 12.1 days

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall in August
Harwich Port, MA

Average snowfall in August - Harwich Port, MA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.38").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Harwich Port, MA

Average snowfall days in August - Harwich Port, MA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6 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
Harwich Port, MA

Average sea temperature in August - Harwich Port, 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
Harwich Port, MA

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

The month with the longest days is June (Average daylight: 15.2h).
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 December (Average sunshine: 4.3h).

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Average sunshine days in August
Harwich Port, MA

Average sunshine days in August - Harwich Port, MA
  • Average sunshine days in August: 17.6 days

The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).

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Average UV index in August
Harwich Port, MA

Average UV index in August - Harwich Port, 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
Harwich Port, MA

Average cloud cover in August - Harwich Port, MA
  • Average cloud cover in August: 27

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in August
Harwich Port, MA

Average visibility in August - Harwich Port, 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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