August weather forecast
Winthrop, MA

Weather in August

August, the last month of the summer in Winthrop, is also a moderately hot month, with an average temperature varying between 80.4°F (26.9°C) and 64°F (17.8°C).

Temperature

In August, the average high-temperature is essentially the same as in July - a still warm 80.4°F (26.9°C). In August, the average low-temperature is 64°F (17.8°C).

Humidity

In Winthrop, the average relative humidity in August is 72%.

Rainfall

In Winthrop, in August, during 11.7 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, there are 141.4 rainfall days, and 27.2" (691mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Ocean temperature

With an average ocean temperature of 67.6°F (19.8°C), August is the month with the warmest seawater.
Note: Swimming in 67.6°F (19.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day in August in Winthrop is 13h and 51min.
On the first day of August, sunrise is at 5:36 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 7:20 pm EDT.

Sunshine

With an average of 10.5h of sunshine, August has the most sunshine of the year.

UV index

June through 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 risk from exposure to the Sun's UV rays for the average person.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 average humidity in August in Winthrop?

The average relative humidity in August in Winthrop is 72%.

How many days does it rain in August in Winthrop?

In Winthrop, in August, it is raining for 11.7 days, with typically 1.61" (41mm) of accumulated precipitation.

When it does not snow in Winthrop?

In Winthrop, Massachusetts, snow does not fall in June through September.

What month is the ocean warmest in Winthrop?

The month with the warmest seawater in Winthrop is August, with an average ocean temperature of 67.6°F (19.8°C).

What is the ocean temperature in August in Winthrop?

In August, the average ocean temperature in Winthrop, Massachusetts, is 67.6°F (19.8°C). For most, swimming in 67.6°F (19.8°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).

How many hours of daylight does Winthrop have in August?

In Winthrop, Massachusetts, the average day length in August is 13h and 51min.

When is the sunrise / sunset in August in Winthrop?

In August, on the first day of the month, sunrise is at 5:36 am and sunset at 8:03 pm. On the last day of the month, in Winthrop, sunrise is at 6:08 am and sunset at 7:20 pm EDT.

What month has the most sunshine in Winthrop?

August has the most sunshine of the year, with an average of 10.5h of sunshine.

How long on average sun shines in August in Winthrop?

In August, the average sunshine duration is 10.5h.

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

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 Winthrop?

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 unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Winthrop, MA

Average temperature in August - Winthrop, MA
  • Average high temperature in August: 80.4°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

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Average pressure in August
Winthrop, MA

Average pressure in August - Winthrop, 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
Winthrop, MA

Average wind speed in August - Winthrop, MA
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in August
Winthrop, MA

Average humidity in August - Winthrop, MA
  • Average humidity in August: 72%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (69%).

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Average rainfall in August
Winthrop, MA

Average rainfall in August - Winthrop, MA
  • Average rainfall in August: 1.61"

The wettest months (with the highest rainfall) are March, April and December (2.91").
The driest month (with the least rainfall) is September (1.26").

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Average rainfall days in August
Winthrop, MA

Average rainfall days in August - Winthrop, MA
  • Average rainfall days in August: 11.7 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in August
Winthrop, MA

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

The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Winthrop, MA

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

The months with the highest number of snowfall days are January and February (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in August
Winthrop, MA

Average sea temperature in August - Winthrop, MA
  • Average sea temperature in August: 67.6°F

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).

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

Average daylight in August / Average sunshine in August - Winthrop, MA
  • Average daylight in August: 13h and 51min

The month with the longest days is June (Average daylight: 15h and 14min).
The month with the shortest days is December (Average daylight: 9h and 8min).

  • Average sunshine in August: 10h and 30min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in August
Winthrop, MA

Average sunshine days in August - Winthrop, MA
  • Average sunshine days in August: 17 days

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (13 days).

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Average UV index in August
Winthrop, MA

Average UV index in August - Winthrop, 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
Winthrop, MA

Average cloud cover in August - Winthrop, MA
  • Average cloud cover in August: 32

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in August
Winthrop, MA

Average visibility in August - Winthrop, 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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