May weather forecastMyrtle Beach, SC
May
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
As Myrtle Beach transitions into May, a marginal rise in the average high-temperature is observed, moving from a pleasant 70.3°F (21.3°C) in April to a moderately hot 77.5°F (25.3°C). Myrtle Beach's nighttime temperature in May falls to an average of 66.7°F (19.3°C).Humidity
May, June, August and December, with an average relative humidity of 78%, are the most humid months in Myrtle Beach.Rainfall
In May, the rain falls for 14.9 days. Throughout May, 2.64" (67mm) of precipitation is accumulated. In Myrtle Beach, during the entire year, the rain falls for 166.5 days and collects up to 28.78" (731mm) of precipitation.Snowfall
March through November are months without snowfall.Ocean temperature
In Myrtle Beach, the average seawater temperature in May is 70.9°F (21.6°C).Note: The majority of individuals do not enjoy swimming in water that is 70.9°F (21.6°C). Breathing control becomes more challenging as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in May 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
In Myrtle Beach, the average sunshine in May is 10.2h.UV index
In Myrtle Beach, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 6 in May leads to these recommendations:
Deflect overexposure. Sun protection is a necessity. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Boost your sun resistance with garments that are densely woven yet spacious. Stay cautious! Sand and water reflections increase UV radiation potency.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
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: 13h and 54min
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 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).
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).
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).
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).
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).
