Myrtle Beach
South Carolina, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
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
The last month of the spring, May, is a moderately hot month in Myrtle Beach, South Carolina, with average temperature fluctuating between 79°F (26.1°C) and 60.4°F (15.8°C).

Temperature

In Myrtle Beach, South Carolina, the average high-temperature slightly increases, from a pleasant 72°F (22.2°C) in April, to a warm 79°F (26.1°C). The average low-temperature, in May, is 60.4°F (15.8°C).

Rainfall

In Myrtle Beach, during May, the rain falls for 7.7 days and regularly aggregates up to 3.1" (79.8mm) of precipitation. Throughout the year, there are 92.8 rainfall days, and 48.3" (1225.7mm) of precipitation is accumulated.

Snowfall

Throughout the year, in Myrtle Beach, 0.7" (17.7mm) of snow is accumulated.

Ocean temperature

In Myrtle Beach, the average seawater 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).

Daylight

The average length of the day in Myrtle Beach is 13.9h.

Sunshine

April through July, with an average of 9h of sunshine, are months with the most sunshine in Myrtle Beach.

UV index

The average daily maximum UV index in Myrtle Beach is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
In May, the average maximum UV index of 9 translate into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. 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. 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. Prolonged stay under the direct sun should be avoided as much as possible, especially if a person burns easily. Sunscreen with a minimum 30 sun protection factor should always be used. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in May in Myrtle Beach?

In Myrtle Beach, in May, the average high-temperature is 79°F (26.1°C), and the average low-temperature is 60.4°F (15.8°C).

How much does it rain in Myrtle Beach in May?

In Myrtle Beach, South Carolina, during May, the rain falls for 7.7 days and regularly aggregates up to 3.1" (79.8mm) of precipitation.

What is the ocean temperature in May in Myrtle Beach?

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

In Myrtle Beach, South Carolina, the average length of the day in May is 13.9h.

What are the months with the most sunshine in Myrtle Beach?

Months with the most sunshine in Myrtle Beach are April through July, with an average of 9h of sunshine.

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

In Myrtle Beach, South Carolina, the average sunshine in May is 9h.

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

In Myrtle Beach, the average daily maximum UV index in May is 9. A UV Index estimate of 8 to 10 represents a very high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in May - Myrtle Beach, SC
  • Average high temperature in May: 78.9°F

The warmest month (with the highest average high temperature) is July (87.7°F).
The month with the lowest average high temperature is January (56.3°F).

  • Average low temperature in May: 60.5°F

The month with the highest average low temperature is July (72.8°F).
The coldest month (with the lowest average low temperature) is January (36.7°F).

Average rainfall in May - Myrtle Beach, SC
  • Average rainfall in May: 3.1"

The wettest month (with the highest rainfall) is September (6.3").
Driest months (with the lowest rainfall) are April and November (2.5").

Average rainfall days in May - Myrtle Beach, SC
  • Average rainfall days in May: 7.7 days

The month with the highest number of rainy days is August (10.6 days).
The month with the lowest number of rainy days is November (5.7 days).

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

The month with the highest snowfall is December (0.6").
Months with the lowest snowfall are January, March, April, May, June, July, August, September, October and November (0").

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 December (0.1 days).
Months with the lowest number of snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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).

Average daylight in May / Average sunshine in May - Myrtle Beach, SC
  • Average daylight in May: 13.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in May: 9h

Months with most sunshine are April, May, June and July (Average sunshine: 9h).
Months with least sunshine are January, November and December (Average sunshine: 6).

Average UV index in May - Myrtle Beach, SC
  • Average UV index in May: 9

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).