May weather forecast
Salem, MA

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

Weather in May

The last month of the spring, May, is an enjoyable month in Salem, Massachusetts, with an average temperature fluctuating between 66.2°F (19°C) and 48.2°F (9°C).

Temperature

In May, the average high-temperature rises from a mild 55.4°F (13°C) in April to an enjoyable 66.2°F (19°C). In Salem, the average low-temperature is 48.2°F (9°C).

Rainfall

In Salem, it is raining for 11 days, with typically 3.35" (85mm) of accumulated precipitation. Throughout the year, there are 124 rainfall days, and 43.03" (1093mm) of precipitation is accumulated.

Ocean temperature

In May, the average ocean temperature is 46.4°F (8°C).
Note: Swimming in 46.4°F (8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in May is 14h and 38min.
On the first day of May, sunrise is at 5:37 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 5:09 am and sunset at 8:13 pm EDT.

Sunshine

In May, the average sunshine in Salem is 8h.

UV index

The average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in May interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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 temperature in May in Salem?

The average high-temperature, in May, in Salem, is 66.2°F (19°C), while the average low-temperature is 48.2°F (9°C).

How much does it rain in Salem in May?

In Salem, Massachusetts, in May, during 11 rainfall days, 3.35" (85mm) of precipitation is typically accumulated.

How cold is the water in May in Salem?

In Salem, the average seawater temperature in May is 46.4°F (8°C). Swimming in 46.4°F (8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Salem have in May?

In Salem, Massachusetts, the average day length in May is 14h and 38min.

What time are sunrise and sunset in May in Salem?

In May, on the first day of the month, sunrise is at 5:37 am and sunset at 7:43 pm. On the last day of the month, in Salem, sunrise is at 5:09 am and sunset at 8:13 pm EDT.

How many hours of sunshine does Salem have in May?

The average sunshine duration in May in Salem is 8h.

How high is the UV index in May in Salem?

The average daily maximum UV index in May in Salem, Massachusetts, is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average rainfall days
Average sunshine
Average UV index

Average temperature in May
Salem, MA

Average temperature in May - Salem, MA
  • Average high temperature in May: 66°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 May: 48°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).

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Average rainfall in May
Salem, MA

Average rainfall in May - Salem, MA
  • Average rainfall in May: 3.3"

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

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Average rainfall days in May
Salem, MA

Average rainfall days in May - Salem, MA
  • Average rainfall days in May: 11 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).

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Average sea temperature in May
Salem, MA

Average sea temperature in May - Salem, MA
  • Average sea temperature in May: 46°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).

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

Average daylight in May / Average sunshine in May - Salem, MA
  • Average daylight in May: 14h and 38min

The month with the longest days is June (Average daylight: 15h and 15min).
The month with the shortest days is December (Average daylight: 9h and 7min).

  • Average sunshine in May: 8h

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).

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Average UV index in May
Salem, MA

Average UV index in May - Salem, MA
  • Average UV index in May: 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).

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