Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
Temperature readings reach their annual highs in July, averaging 86.5°F (30.3°C) and a minimum average of 78.3°F (25.7°C).Heat index
July's heat index is appraised at a sweltering 98.6°F (37°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.Know that the heat index computations account for shaded terrains and slight winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
In Sullivan's Island, the average relative humidity in July is 76%.Rainfall
In July, in Sullivan's Island, the rain falls for 24.4 days. Throughout July, 5.67" (144mm) of precipitation is accumulated. Throughout the year, there are 182 rainfall days, and 45.55" (1157mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall in Sullivan's Island.Daylight
In Sullivan's Island, the average length of the day in July is 14h and 4min.On the first day of July in Sullivan's Island, sunrise is at 6:15 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 8:18 pm EDT.
Sunshine
The month with the most sunshine is July, with an average of 11h of sunshine.UV index
The months with the highest UV index in Sullivan's Island are May through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In July, the maximum UV index of 7 suggests these recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What are the warmest months in Sullivan's Island?
How hot is July in Sullivan's Island?
What is the average humidity in July in Sullivan's Island?
How much does it rain in Sullivan's Island in July?
When it does not snow in Sullivan's Island?
How many hours of daylight does Sullivan's Island have in July?
When are sunrise and sunset in July in Sullivan's Island?
What month has the most sunshine in Sullivan's Island?
How many hours of sunshine does Sullivan's Island have in July?
When is the highest UV index in Sullivan's Island?
What is the UV index intensity in July in Sullivan's Island?
Average temperature in July
Sullivan's Island, SC
- Average high temperature in July: 86.5°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 July: 78.3°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 July
Sullivan's Island, SC
- Average pressure in July: 30"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 July
Sullivan's Island, SC
- Average wind speed in July: 9.1mph
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 July
Sullivan's Island, SC
- Average humidity in July: 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 July
Sullivan's Island, SC
- Average rainfall in July: 5.67"
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 July
Sullivan's Island, SC
- Average rainfall days in July: 24.4 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 July
Sullivan's Island, SC
- Average snowfall days in July: 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 July /
Average sunshine in July
Sullivan's Island, SC
- Average daylight in July: 14h and 1min
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 July: 11h and 0min
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 July
Sullivan's Island, SC
- Average sunshine days in July: 4.1 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 July
Sullivan's Island, SC
- Average UV index in July: 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 July
Sullivan's Island, SC
- Average cloud cover in July: 26
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 July
Sullivan's Island, SC
- Average visibility in July: 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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