May weather forecastIsle of Palms, SC
May
Weather in May
The last month of the spring, May, is a warm month in Isle of Palms, South Carolina, with temperature in the range of an average low of 69.1°F (20.6°C) and an average high of 77.7°F (25.4°C).Temperature
Isle of Palms's transition into May brings a slight rise in the average high-temperature, moving from an agreeable 71.6°F (22°C) in April to a warm 77.7°F (25.4°C). Night temperatures during May experience a slight downturn, averaging an agreeable 69.1°F (20.6°C).Humidity
In May, the average relative humidity is 76%.Rainfall
In Isle of Palms, South Carolina, in May, it is raining for 16.1 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, in Isle of Palms, there are 184.5 rainfall days, and 45.83" (1164mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall in Isle of Palms.Daylight
In Isle of Palms, the average length of the day in May is 13h and 52min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:01 pm. On the last day of May, in Isle of Palms, sunrise is at 6:11 am and sunset at 8:21 pm EDT.
Sunshine
In Isle of Palms, the average sunshine in May is 10.5h.UV index
The average daily maximum UV index in May in Isle of Palms is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 6 in May translates into these instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Isle of Palms, SC
- Average high temperature in May: 77.7°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in May: 69.1°F
The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (45.7°F).
Average pressure in May
Isle of Palms, SC
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
Isle of Palms, SC
- Average wind speed in May: 9.7mph
The windiest months (with the highest average wind speed) are March and April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in May
Isle of Palms, SC
- Average humidity in May: 76%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).
Average rainfall in May
Isle of Palms, SC
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is August (7.83").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in May
Isle of Palms, SC
- Average rainfall days in May: 16.1 days
The month with the highest number of rainy days is August (25.2 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in May
Isle of Palms, SC
- Average snowfall in May: 0"
The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Isle of Palms, SC
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Isle of Palms, SC
- Average daylight in May: 13h and 54min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 10h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in May
Isle of Palms, SC
- Average sunshine days in May: 12.4 days
The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is August (2.5 days).
Average UV index in May
Isle of Palms, 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
Isle of Palms, SC
- Average cloud cover in May: 27
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in May
Isle of Palms, 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).





