Contents
- Weather in June
- Frequently asked questions
- Average temperature in June
- Average pressure in June
- Average wind speed in June
- Average humidity in June
- Average rainfall in June
- Average rainfall days in June
- Average snowfall days in June
- Average daylight in June
- Average sunshine in June
- Average sunshine days in June
- Average UV index in June
- Average cloud cover in June
- Average visibility in June
Weather in June
Temperature
Sullivan's Island observes a slight ascent in average high-temperatures during June, adjusting from 78.1°F (25.6°C) in May to a still moderately hot 84.6°F (29.2°C). Throughout the month of June, Sullivan's Island witnesses an average temperature of 75.4°F (24.1°C).Heat index
The heat index value for June is appraised at a tropical 93.2°F (34°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.Heat index determinations are made taking into account the shade and light air movements. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
In Sullivan's Island, the average relative humidity in June is 76%.Rainfall
In Sullivan's Island, in June, during 21 rainfall days, 4.72" (120mm) of precipitation is typically accumulated. Throughout the year, there are 182 rainfall days, and 45.55" (1157mm) of precipitation is accumulated.Snowfall
In Sullivan's Island, snow does not fall in March through December.Daylight
The month with the longest days is June, with an average of 14h and 18min of daylight.On the first day of June, sunrise is at 6:11 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:31 pm EDT.
Sunshine
In June, the average sunshine is 10.9h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index in Sullivan's Island. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In June, the UV index of 7 transforms into the following advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 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. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is June in Sullivan's Island?
What is the average humidity in June?
How many days does it rain in June?
When it does not snow?
When are the longest days?
How many hours of daylight does Sullivan's Island have in June?
When is the sunrise / sunset in June?
How long on average sun shines in June?
When is the highest UV index?
What is the UV index reading in June in Sullivan's Island?
Average temperature in June
Sullivan's Island, SC
- Average high temperature in June: 84.6°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in June: 75.4°F
The month with the highest average low temperature is July (78.3°F).
The coldest month (with the lowest average low temperature) is January (45.5°F).
Average pressure in June
Sullivan's Island, SC
- Average pressure in June: 29.98"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 June
Sullivan's Island, SC
- Average wind speed in June: 8.9mph
The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.4mph).
Average humidity in June
Sullivan's Island, SC
- Average humidity in June: 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 June
Sullivan's Island, SC
- Average rainfall in June: 4.72"
The wettest month (with the highest rainfall) is August (8.23").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in June
Sullivan's Island, SC
- Average rainfall days in June: 21 days
The month with the highest number of rainy days is August (25.9 days).
The month with the least rainy days is November (8.5 days).
Average snowfall days in June
Sullivan's Island, SC
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (0.3 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 June /
Average sunshine in June
Sullivan's Island, SC
- Average daylight in June: 14h and 2min
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 June: 10h and 5min
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 June
Sullivan's Island, SC
- Average sunshine days in June: 6.5 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (2.8 days).
Average UV index in June
Sullivan's Island, SC
- Average UV index in June: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in June
Sullivan's Island, SC
- Average cloud cover in June: 25
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 June
Sullivan's Island, SC
- Average visibility in June: 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).
Sullivan's Island, South Carolina, USA
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