August weather forecast
Harwich, MA

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Weather in August

August, the last month of the summer in Harwich, is also an agreeable month, with temperature in the range of an average low of 68.2°F (20.1°C) and an average high of 71.6°F (22°C).

Temperature

August is the warmest month of the year, registering average temperatures as high as 71.6°F (22°C) and as low as 68.2°F (20.1°C).

Humidity

The average relative humidity in August in Harwich is 82%.

Rainfall

In August, the rain falls for 12.1 days. Throughout August, 1.5" (38mm) of precipitation is accumulated. In Harwich, during the entire year, the rain falls for 142.4 days and collects up to 22.09" (561mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August in Harwich is 13h and 48min.
On the first day of the month, sunrise is at 5:35 am and sunset at 7:57 pm. On the last day of August, in Harwich, sunrise is at 6:05 am and sunset at 7:14 pm EDT.

Sunshine

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

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

What is the hottest time of year in Harwich?

Harwich's temperatures tend to reach their peak averages in August, with a high of 71.6°F (22°C) and a low of 68.2°F (20.1°C).

What is the temperature in August in Harwich?

In August, in Harwich, the average high-temperature is 71.6°F (22°C), and the average low-temperature is 68.2°F (20.1°C).

What is the average humidity in August in Harwich?

In Harwich, the average relative humidity in August is 82%.

How much does it rain in Harwich in August?

In Harwich, Massachusetts, during August, the rain falls for 12.1 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When it does not snow in Harwich?

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

How many hours of daylight does Harwich have in August?

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

When is the sunrise / sunset in August in Harwich?

In August, on the first day of the month, sunrise is at 5:35 am and sunset at 7:57 pm. On the last day of the month, in Harwich, Massachusetts, sunrise is at 6:05 am and sunset at 7:14 pm EDT.

What month has the most sunshine in Harwich?

August has the most sunshine of the year, with an average of 10.7h of sunshine.

How many hours of sunshine does Harwich have in August?

In Harwich, Massachusetts, the average sunshine duration in August is 10.7h.

When is the highest UV index in Harwich?

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

What is the UV index intensity in August in Harwich?

In Harwich, Massachusetts, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Harwich, MA

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

The warmest month (with the highest average high temperature) is August (71.6°F).
The 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, MA

Average pressure in August - Harwich, 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
Harwich, MA

Average wind speed in August - Harwich, 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, MA

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

The 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, MA

Average rainfall in August - Harwich, 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, MA

Average rainfall days in August - Harwich, 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, MA

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

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

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Average snowfall days in August
Harwich, MA

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

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

Average daylight in August / Average sunshine in August - Harwich, 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 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

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Average sunshine days in August
Harwich, MA

Average sunshine days in August - Harwich, 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, MA

Average UV index in August - Harwich, 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
Harwich, MA

Average cloud cover in August - Harwich, 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, MA

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

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