August weather forecast
Salem, MA

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The gray Witch House located in Salem Town, Massachusetts
The gray Witch House located in Salem Town, Massachusetts

Weather in August

Though August temperatures in Salem are still hot, ranging from 61°F (16.1°C) to 81°F (27.2°C), the weather starts transitioning towards autumn. The sea remains warm providing ample opportunity to enjoy water-based activities. The city's calendar fills with outdoor events taking advantage of the warm summer nights. Though August receives ten days of rainfall, the precipitation typically does not disrupt outdoor activities. With moderate UV index of 7, one can enjoy longer daylight hours under the sun.

Temperature

Salem in August witnesses an average high-temperature of a still moderately hot 80.6°F (27°C), indicating a slight variation from July's 82.4°F (28°C). In the month of August, the nighttime temperature dips to a steady average of 60.8°F (16°C).

Rainfall

In Salem, during August, the rain falls for 10 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, in Salem, there are 124 rainfall days, and 43.03" (1093mm) of precipitation is accumulated.

Ocean temperature

With an average ocean temperature of 64.4°F (18°C), August is the month with the warmest seawater.
Note: Swimming in 64.4°F (18°C) is not a pleasurable activity for the majority of people. Breathing becomes increasingly challenging as water 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 52min.
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 7:19 pm EDT.

Sunshine

June through August, with an average of 9h of sunshine, are months with the most sunshine in Salem, Massachusetts.

UV index

In Salem, the average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in August converts into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Jun 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

August temperatures vary between a high-temperature of 80.6°F (27°C) and a low-temperature of 60.8°F (16°C).

How much does it rain in Salem in August?

In August, the rain falls for 10 days. Throughout August, 3.07" (78mm) of precipitation is accumulated.

What month is the ocean warmest?

The month with the warmest seawater is August, with an average ocean temperature of 64.4°F (18°C).

What is the ocean temperature in August?

In Salem, Massachusetts, the average seawater temperature in August is 64.4°F (18°C). For swimming, a surface water temperature of 64.4°F (18°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?

The average day length in August is 13h and 52min.

When are sunrise and sunset in August?

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 7:19 pm EDT.

What are the months with the most sunshine?

The months with the most sunshine are June through August, with an average of 9h of sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 9h.

How high is the UV index in August?

In August, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Salem, MA

Average temperature in August - Salem, MA
  • Average high temperature in August: 81°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in August: 61°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average rainfall in August
Salem, MA

Average rainfall in August - Salem, MA
  • Average rainfall in August: 3.1"

The wettest month (with the highest rainfall) is November (4.6").
The driest month (with the least rainfall) is July (3").

Average rainfall days in August
Salem, MA

Average rainfall days in August - Salem, MA
  • Average rainfall days in August: 10 days

The month with the highest number of rainy days is December (12 days).
The month with the least rainy days is September (8 days).

Average sea temperature in August
Salem, MA

Average sea temperature in August - Salem, MA
  • Average sea temperature in August: 64°F

The best month for swimming (with the highest average sea temperature) is August (64°F).
The coldest month (with the lowest average sea temperature) is March (37°F).

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

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 9h

The months with the most sunshine are June, July and August (Average sunshine: 9h).
The months with the least sunshine are January, November and December (Average sunshine: 5h).

Average UV index in August
Salem, MA

Average UV index in August - Salem, MA
  • Average UV index in August: 7

The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 1).

Salem, Massachusetts, USA

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