August weather forecast
Osterville, MA

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Weather in August

August, the last month of the summer in Osterville, is also an agreeable month, with an average temperature varying between 68.2°F (20.1°C) and 72.5°F (22.5°C).

Temperature

In Osterville, Massachusetts, August records the highest average temperatures, peaking at 72.5°F (22.5°C) and reaching a low of 68.2°F (20.1°C).

Humidity

In August, the average relative humidity is 81%.

Rainfall

The month with the least rainfall in Osterville is August, when the rain falls for 12.4 days and typically collects 1.73" (44mm) of precipitation.

Snowfall

May through November are months without snowfall in Osterville.

Ocean temperature

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

In August, the average length of the day is 13h and 48min.
On the first day of August, sunrise is at 5:36 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:16 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.8h of sunshine.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index in Osterville. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 6 in August translates into this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What is the hottest time of year in Osterville?

Osterville's warmest temperatures are experienced in August, with average high temperatures of 72.5°F (22.5°C) and lows of 68.2°F (20.1°C).

What are August temperatures in Osterville?

In Osterville, 72.5°F (22.5°C) is the average high-temperature and 68.2°F (20.1°C) is the average low-temperature during August.

What is the average humidity in August in Osterville?

In Osterville, the average relative humidity in August is 81%.

What is the driest month in Osterville?

August is the month with the least rainfall in Osterville, Massachusetts. Rain falls for 12.4 days and accumulates 1.73" (44mm) of precipitation.

How much does it rain in Osterville in August?

In Osterville, in August, it is raining for 12.4 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow in Osterville?

May through November are months without snowfall in Osterville, Massachusetts.

What month is the ocean warmest in Osterville?

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

What is the ocean temperature in August in Osterville?

In Osterville, the average seawater temperature in August is 67.5°F (19.7°C). For most, swimming in 67.5°F (19.7°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

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

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

When are sunrise and sunset in August in Osterville?

On the first day of August in Osterville, Massachusetts, sunrise is at 5:36 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:16 pm EDT.

What month has the most sunshine in Osterville?

With an average of 10.8h of sunshine, August has the most sunshine of the year.

How long on average sun shines in August in Osterville?

In August, the average sunshine duration is 10.8h.

What are the months with the highest UV index in Osterville?

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

What is the UV index reading in August in Osterville?

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

Average temperature in August - Osterville, MA
  • Average high temperature in August: 72.5°F

The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (38.3°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 (30.4°F).

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Average pressure in August
Osterville, MA

Average pressure in August - Osterville, 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
Osterville, MA

Average wind speed in August - Osterville, MA
  • Average wind speed in August: 10.6mph

The windiest month (with the highest average wind speed) is January (16.5mph).
The calmest month (with the lowest average wind speed) is August (10.6mph).

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Average humidity in August
Osterville, MA

Average humidity in August - Osterville, MA
  • Average humidity in August: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in August
Osterville, MA

Average rainfall in August - Osterville, MA
  • Average rainfall in August: 1.73"

The wettest month (with the highest rainfall) is October (3.7").
The driest month (with the least rainfall) is August (1.73").

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Average rainfall days in August
Osterville, MA

Average rainfall days in August - Osterville, MA
  • Average rainfall days in August: 12.4 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is February (10.3 days).

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Average snowfall in August
Osterville, MA

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

The month with the highest snowfall is March (1.93").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in August
Osterville, MA

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

The month with the highest number of snowfall days is February (7.1 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
Osterville, MA

Average sea temperature in August - Osterville, 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
Osterville, MA

Average daylight in August / Average sunshine in August - Osterville, MA
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 10h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

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Average sunshine days in August
Osterville, MA

Average sunshine days in August - Osterville, MA
  • Average sunshine days in August: 17.7 days

The month with the most sunshine days is August (17.7 days).
The month with the least sunshine days is February (11.4 days).

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Average UV index in August
Osterville, MA

Average UV index in August - Osterville, 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
Osterville, MA

Average cloud cover in August - Osterville, MA
  • Average cloud cover in August: 27

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in August
Osterville, MA

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

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