July weather forecastMyrtle Beach, SC
July
Weather in July
July steps in with Myrtle Beach, South Carolina, being in the throes of summer, revealing the highest temperatures of the year. It is the peak of summer with average temperatures hitting a high of 86.7°F (30.4°C) and a low of 76.3°F (24.6°C). Rainfall also reaches its peak in July, with approximately 2.99" (76mm) scattered over about 19.8 days. Transitioning into August maintains a similar weather pattern, sustaining the high temperatures and notable humidity. With over 14.1 hours of daylight, high UV index, and sea temperatures peaking, July provides the quintessential summer experience, affirming Myrtle Beach as an enticing summer destination.Temperature
Myrtle Beach's July weather, marked by an average high temperature of 86.7°F (30.4°C) and an average low temperature of 76.3°F (24.6°C), is the warmest in the year.Heat index
July's mean heat index is evaluated at a torrid 100.4°F (38°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
The average relative humidity in July is 77%.Rainfall
In July, the rain falls for 19.8 days. Throughout July, 2.99" (76mm) 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
In Myrtle Beach, snow does not fall in March through November.Ocean temperature
In July, the average ocean temperature in Myrtle Beach is 82°F (27.8°C).Note: Swimming, diving, and other water activities in the temperature range of 77°F (25°C) to 84.2°F (29°C) are perceived as very enjoyable and comfortable for prolonged durations.
Daylight
The average length of the day in July is 14h and 8min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:30 pm. On the last day of July, sunrise is at 6:27 am and sunset at 8:16 pm EDT.
Sunshine
July and August, with an average of 10.9h of sunshine, are months with the most sunshine.UV index
June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 7 in July, converts into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be on guard! The reflective nature of sand and water boosts UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Myrtle Beach, SC
- Average high temperature in July: 86.7°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 July: 76.3°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 July
Myrtle Beach, SC
- Average pressure in July: 29.99"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 July
Myrtle Beach, SC
- Average wind speed in July: 8.8mph
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 July
Myrtle Beach, SC
- Average humidity in July: 77%
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 July
Myrtle Beach, SC
- Average rainfall in July: 2.99"
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 July
Myrtle Beach, SC
- Average rainfall days in July: 19.8 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 July
Myrtle Beach, SC
- Average snowfall in July: 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 July
Myrtle Beach, SC
- Average snowfall days in July: 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 July
Myrtle Beach, SC
- Average sea temperature in July: 81.9°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 July /
Average sunshine in July
Myrtle Beach, SC
- Average daylight in July: 14h and 6min
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 July: 10h and 54min
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 July
Myrtle Beach, SC
- Average sunshine days in July: 8.5 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 July
Myrtle Beach, SC
- Average UV index in July: 7
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 July
Myrtle Beach, SC
- Average cloud cover in July: 26
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 July
Myrtle Beach, 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).
