July weather forecast
Myrtle Beach, SC

The glorious Myrtle Beach in South Carolina, with lit city buildings
The glorious Myrtle Beach in South Carolina, with lit city buildings

Weather in July

July in Myrtle Beach, South Carolina, is a hot summer month, with an average temperature varying between 86.7°F (30.4°C) and 76.3°F (24.6°C).

Temperature

The warmest month is July, with an average high-temperature of 86.7°F (30.4°C) and an average low-temperature of 76.3°F (24.6°C).

Heat index

The average heat index in July is computed to be a torrid 100.4°F (38°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, pregnancy, clothing, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Myrtle Beach, 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. Throughout the year, there are 166.5 rainfall days, and 28.78" (731mm) of precipitation is accumulated.

Snowfall

March through November are months without snowfall in Myrtle Beach.

Ocean temperature

In Myrtle Beach, in July, the average water temperature is 82°F (27.8°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in July in Myrtle Beach is 14h and 8min.
On the first day of the month, sunrise is at 6:08 am and sunset at 8:30 pm. On the last day of July, in Myrtle Beach, sunrise is at 6:27 am and sunset at 8:16 pm EDT.

Sunshine

The months with the most sunshine in Myrtle Beach are July and August, with an average of 10.9h of sunshine.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Myrtle Beach. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the warmest month in Myrtle Beach?

With an average high-temperature of 86.7°F (30.4°C) and an average low-temperature of 76.3°F (24.6°C), July is the warmest month in Myrtle Beach.

What is the temperature in July in Myrtle Beach?

The average high-temperature, in July, in Myrtle Beach, is 86.7°F (30.4°C), while the average low-temperature is 76.3°F (24.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in July is computed to be 100.4°F (38°C).

What is the average humidity in July in Myrtle Beach?

In July, the average relative humidity in Myrtle Beach, South Carolina, is 77%.

How much does it rain in Myrtle Beach in July?

In Myrtle Beach, in July, it is raining for 19.8 days, with typically 2.99" (76mm) of accumulated precipitation.

When it does not snow in Myrtle Beach?

In Myrtle Beach, South Carolina, snow does not fall in March through November.

How warm is the water in July in Myrtle Beach?

In Myrtle Beach, South Carolina, in July, the average water temperature is 82°F (27.8°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in July in Myrtle Beach?

In July, the average day length in Myrtle Beach, South Carolina, is 14h and 8min.

When is the sunrise / sunset in July in Myrtle Beach?

On the first day of July in Myrtle Beach, South Carolina, sunrise is at 6:08 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 8:16 pm EDT.

What is the month with the most sunshine in Myrtle Beach?

July and August, with an average of 10.9h of sunshine, are months with the most sunshine in Myrtle Beach, South Carolina.

How many hours of sunshine does Myrtle Beach have in July?

In July, the average sunshine duration in Myrtle Beach, South Carolina, is 10.9h.

When is the highest UV index in Myrtle Beach?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Myrtle Beach, South Carolina.

What is the UV index intensity in July in Myrtle Beach?

In July, the average daily maximum UV index in Myrtle Beach is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Myrtle Beach, SC

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).

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Average pressure in July
Myrtle Beach, SC

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).

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Average wind speed in July
Myrtle Beach, SC

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).

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Average humidity in July
Myrtle Beach, SC

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%).

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Average rainfall in July
Myrtle Beach, SC

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").

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Average rainfall days in July
Myrtle Beach, SC

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).

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Average snowfall in July
Myrtle Beach, SC

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").

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Average snowfall days in July
Myrtle Beach, SC

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).

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Average sea temperature in July
Myrtle Beach, SC

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).

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Average daylight in July /
Average sunshine in July
Myrtle Beach, SC

Average daylight in July / Average sunshine in July - Myrtle Beach, SC
  • Average daylight in July: 14h and 8min

The month with the longest days is June (Average daylight: 14h and 22min).
The month with the shortest days is December (Average daylight: 9h and 58min).

  • 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).

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Average sunshine days in July
Myrtle Beach, SC

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).

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Average UV index in July
Myrtle Beach, SC

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).

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Average cloud cover in July
Myrtle Beach, SC

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).

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Average visibility in July
Myrtle Beach, SC

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).

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