May weather forecast
Myrtle Beach, SC

The glorious Myrtle Beach in South Carolina, with lit city buildings
The glorious Myrtle Beach in South Carolina, with lit city buildings

Weather in May

The last month of the spring, May, is a warm month in Myrtle Beach, South Carolina, with an average temperature varying between 77.5°F (25.3°C) and 66.7°F (19.3°C).

Temperature

In Myrtle Beach, the average high-temperature in May slightly increases from a pleasant 70.3°F (21.3°C) in April to a warm 77.5°F (25.3°C). In Myrtle Beach, the average low-temperature is 66.7°F (19.3°C).

Humidity

May, June, August and December, with an average relative humidity of 78%, are the most humid months.

Rainfall

In Myrtle Beach, during May, the rain falls for 14.9 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, in Myrtle Beach, there are 166.5 rainfall days, and 28.78" (731mm) of precipitation is accumulated.

Snowfall

In Myrtle Beach, South Carolina, snow does not fall in March through November.

Ocean temperature

In Myrtle Beach, the average seawater temperature in May is 70.9°F (21.6°C).
Note: For swimming, a surface water temperature of 70.9°F (21.6°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).

Daylight

In Myrtle Beach, the average length of the day in May is 13h and 55min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:58 pm. On the last day of May, sunrise is at 6:06 am and sunset at 8:20 pm EDT.

Sunshine

In May, the average sunshine is 10.2h.

UV index

In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in May in Myrtle Beach?

The average high-temperature, in May, is 77.5°F (25.3°C), while the average low-temperature is 66.7°F (19.3°C).

What are the most humid months in Myrtle Beach?

May, June, August and December, with an average relative humidity of 78%, are most humid months in Myrtle Beach.

What is the average humidity in May in Myrtle Beach?

In May, the average relative humidity in Myrtle Beach, South Carolina, is 78%.

How much does it rain in Myrtle Beach in May?

In Myrtle Beach, South Carolina, in May, it is raining for 14.9 days, with typically 2.64" (67mm) of accumulated precipitation.

When it does not snow in Myrtle Beach?

In Myrtle Beach, South Carolina, snow does not fall in March through November.

What is the ocean temperature in May in Myrtle Beach?

In May, the average ocean temperature is 70.9°F (21.6°C). For swimming, a surface water temperature of 70.9°F (21.6°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 May in Myrtle Beach?

In May, the average day length in Myrtle Beach is 13h and 55min.

What time are sunrise and sunset in May in Myrtle Beach?

On the first day of May in Myrtle Beach, South Carolina, sunrise is at 6:26 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:20 pm EDT.

How many hours of sunshine does Myrtle Beach have in May?

The average sunshine duration in May in Myrtle Beach, South Carolina, is 10.2h.

How high is the UV index in May in Myrtle Beach?

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Myrtle Beach, SC

Average temperature in May - Myrtle Beach, SC
  • Average high temperature in May: 77.5°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (54.3°F).

  • Average low temperature in May: 66.7°F

The month with the highest average low temperature is July (76.3°F).
The coldest month (with the lowest average low temperature) is January (42.1°F).

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Average pressure in May
Myrtle Beach, SC

Average pressure in May - Myrtle Beach, SC
  • Average pressure in May: 30.03"Hg

The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in May
Myrtle Beach, SC

Average wind speed in May - Myrtle Beach, SC
  • Average wind speed in May: 9.3mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7.9mph).

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Average humidity in May
Myrtle Beach, SC

Average humidity in May - Myrtle Beach, SC
  • Average humidity in May: 78%

The months with the highest relative humidity are May, June, August and December (78%).
The months with the lowest relative humidity are January and November (74%).

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Average rainfall in May
Myrtle Beach, SC

Average rainfall in May - Myrtle Beach, SC
  • Average rainfall in May: 2.64"

The wettest month (with the highest rainfall) is August (4.53").
The driest month (with the least rainfall) is January (1.02").

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Average rainfall days in May
Myrtle Beach, SC

Average rainfall days in May - Myrtle Beach, SC
  • Average rainfall days in May: 14.9 days

The months with the highest number of rainy days are July and August (19.8 days).
The month with the least rainy days is November (9.7 days).

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Average snowfall in May
Myrtle Beach, SC

Average snowfall in May - Myrtle Beach, SC
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in May
Myrtle Beach, SC

Average snowfall days in May - Myrtle Beach, SC
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in May
Myrtle Beach, SC

Average sea temperature in May - Myrtle Beach, SC
  • Average sea temperature in May: 70.8°F

The best month for swimming (with the highest average sea temperature) is August (82.9°F).
The coldest month (with the lowest average sea temperature) is March (57.7°F).

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Average daylight in May /
Average sunshine in May
Myrtle Beach, SC

Average daylight in May / Average sunshine in May - Myrtle Beach, SC
  • Average daylight in May: 13h and 55min

The month with the longest days is June (Average daylight: 14h and 22min).
The month with the shortest days is December (Average daylight: 9h and 58min).

  • Average sunshine in May: 10h and 12min

The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in May
Myrtle Beach, SC

Average sunshine days in May - Myrtle Beach, SC
  • Average sunshine days in May: 13.4 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (8.2 days).

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Average UV index in May
Myrtle Beach, SC

Average UV index in May - Myrtle Beach, SC
  • Average UV index in May: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in May
Myrtle Beach, SC

Average cloud cover in May - Myrtle Beach, SC
  • Average cloud cover in May: 29

The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is June (Cloud cover 25).

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Average visibility in May
Myrtle Beach, SC

Average visibility in May - Myrtle Beach, SC
  • Average visibility in May: 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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