July weather forecast
Saint Simons Island, GA

July carries the tropical conditions of June further, maintaining high humidity and rainfall levels. With the change from June to July, daylight decreases slightly though sea temperatures continue to rise. The high temperature, along with persistent rains, keeps the cloud coverage relatively stable and visibility remains clear across the Island. July is exceptional on Saint Simons Island due to its maximum average temperature and sea temperature of 88.7 degrees F and 82.3 degrees F respectively. However, the month offers a vibrant summer experience, comprising beach activities by day and numerous social events by evening.

Temperature

Saint Simons Island reaches its highest average temperatures in July, measuring 88.7°F (31.5°C) at the peak and 77°F (25°C) at the lowest.

Heat index

The average heat index in July is calculated to be an extremely hot 105.8°F (41°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in July is 76%.

Rainfall

In Saint Simons Island, during July, the rain falls for 21.6 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 163.3 rainfall days, and 20.43" (519mm) of precipitation is accumulated.

Snowfall

In Saint Simons Island, snow does not fall in January, March through November.

Ocean temperature

In Saint Simons Island, in July, the average water temperature is 82.2°F (27.9°C).
Note: Swimming, diving, and other activities in water temperatures between 77°F (25°C) and 84.2°F (29°C) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.

Daylight

In July, the average length of the day is 13h and 56min.
On the first day of July, sunrise is at 6:25 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 8:21 pm EDT.

Sunshine

With an average of 11h of sunshine, July has the most sunshine of the year.

UV index

May through September, 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 threat to health from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 7 in July transforms into this advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be alert! The reflection of water and sand augments UV radiation intensity.