August weather forecast
Myrtle Island, FL

The last month of the summer, August, is another hot month in Myrtle Island, Florida, with an average temperature varying between 92.3°F (33.5°C) and 75.2°F (24°C).

Temperature

Myrtle Island's temperatures peak on average in August, reaching 92.3°F (33.5°C) at their highest and 75.2°F (24°C) at their lowest.

Heat index

The average heat index in August is estimated at a life-threatening hot 120.2°F (49°C). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The months with the highest humidity are July through September, with an average relative humidity of 77%.

Rainfall

In Myrtle Island, in August, it is raining for 20.2 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, in Myrtle Island, Florida, there are 151.1 rainfall days, and 17.99" (457mm) of precipitation is accumulated.

Daylight

The average length of the day in August is 13h and 11min.
On the first day of August, sunrise is at 6:46 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 7:48 pm EDT.

Sunshine

The average sunshine in August is 10h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in August interprets into the following advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.