Winthrop
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Winthrop, MA

The last month of the summer, August, is another warm month in Winthrop, Massachusetts, with average temperature varying between 80.4°F (26.9°C) and 64°F (17.8°C).

Temperature

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

Humidity

In Winthrop, Massachusetts, the average relative humidity is 72%.

Rainfall

In Winthrop, during August, the rain falls for 11.7 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, in Winthrop, there are 141.4 rainfall days, and 27.2" (691mm) of precipitation is accumulated.

Snowfall

In Winthrop snow does not fall in June through September.

Ocean temperature

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

Daylight

In August, the average length of the day is 13.8h.

Sunshine

The month with the most sunshine in Winthrop, Massachusetts, is August, with an average of 10.5h of sunshine.

UV index

Months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to the UV radiation 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. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in August in Winthrop?

In Winthrop, in August, the average high-temperature is 80.4°F (26.9°C), and the average low-temperature is 64°F (17.8°C).

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 August, in Winthrop, the rain falls for 11.7 days. Throughout August, 1.61" (41mm) of precipitation is accumulated.

When it does not snow in Winthrop?

In Winthrop snow does not fall in June through September.

When is the ocean warmest in Winthrop?

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

What is the ocean temperature in August in Winthrop?

In Winthrop, Massachusetts, in August, the average water temperature 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).

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

In Winthrop, the average length of the day in August is 13.8h.

What month has the most sunshine in Winthrop?

The month with the most sunshine in Winthrop, Massachusetts, is August, with an average of 10.5h of sunshine.

How many hours of sunshine does Winthrop have in August?

In August, the average sunshine in Winthrop, Massachusetts, is 10.5h.

When is the highest UV index in Winthrop?

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

What is the UV index reading in August in Winthrop?

In Winthrop, 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 unprotected exposure to the UV radiation.
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).

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%).

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").

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).

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

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

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

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

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).

Average daylight in August / Average sunshine in August - Winthrop, 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: 9.1h).

  • Average sunshine in August: 10.5h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average UV index in August - Winthrop, MA
  • Average UV index in August: 6

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).