May weather forecast
Myrtle Beach, SC

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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 month of May introduces the shift towards the warm summer weather in Myrtle Beach, South Carolina marked by rising temperatures. The highest average temperature during this period is noted at 77.5°F (25.3°C), while the lowest average temperature would be around 66.7°F (19.3°C). Situation of precipitation also continues to rise, registering a total of 2.64" (67mm) anticipated across nearly 14.9 days. As the city edges into June, the weather further warms up, enhancing beach and water activities. The increase in daylight hours and UV index in May encourage the flourishing of outdoor events, further promoting the allure of this coastal city.

Temperature

Myrtle Beach's transition into May brings a slight rise in the average high-temperature, moving from an agreeable 70.3°F (21.3°C) in April to a warm 77.5°F (25.3°C). Myrtle Beach, during May nights, observes an average temperature of 66.7°F (19.3°C).

Humidity

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

Rainfall

In Myrtle Beach, South Carolina, in May, during 14.9 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, in Myrtle Beach, there are 166.5 rainfall days, and 28.78" (731mm) of precipitation is accumulated.

Snowfall

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

Ocean temperature

In May, the average ocean temperature in Myrtle Beach is 70.9°F (21.6°C).
Note: The majority of individuals find it unpleasurable to swim in 70.9°F (21.6°C). It becomes progressively harder to manage one's breathing as the water temperature falls below 69.8°F (21°C).

Daylight

In May, the average length of the day in Myrtle Beach is 13h and 55min.
On the first day of May, sunrise is at 6:25 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:20 pm EDT.

Sunshine

The average sunshine in May is 10.2h.

UV index

In May, the average daily maximum UV index in Myrtle Beach is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be alert! The reflection of water and sand augments UV radiation intensity.
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Frequently asked questions

What is the temperature in May in Myrtle Beach?

In Myrtle Beach, in May, the average high-temperature is 77.5°F (25.3°C), and the average low-temperature is 66.7°F (19.3°C).

What is the most humid month in Myrtle Beach?

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

What is the average humidity in May in Myrtle Beach?

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

How many days does it rain in May in Myrtle Beach?

In Myrtle Beach, in May, during 14.9 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

When it does not snow in Myrtle Beach?

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

What is the ocean temperature in May in Myrtle Beach?

In Myrtle Beach, South Carolina, in May, the average water temperature is 70.9°F (21.6°C). Swimming in 70.9°F (21.6°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in May in Myrtle Beach?

The average day length in May is 13h and 55min.

When are sunrise and sunset in May in Myrtle Beach?

On the first day of May in Myrtle Beach, sunrise is at 6:25 am and sunset at 7:59 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?

In May, the average sunshine duration is 10.2h.

What is the UV index intensity in May in Myrtle Beach?

The average daily maximum UV index in May in Myrtle Beach is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
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 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in May: 10h and 1min

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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Myrtle Beach, South Carolina, USA

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