August weather forecast
Grand Island, FL

August, the last month of the summer in Grand Island, is another tropical month, with an average temperature ranging between max 90.9°F (32.7°C) and min 75.7°F (24.3°C).

Temperature

August stands out as Grand Island's warmest month, with temperatures ranging between an average high of 90.9°F (32.7°C) and a low of 75.7°F (24.3°C).

Heat index

August's average heat index is computed to be a life-threatening hot 114.8°F (46°C). Keep wary: Heat cramps along with heat exhaustion are expected. Heatstroke is a possible outcome of ongoing activity.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. 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.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The months with the highest humidity in Grand Island are July through September, with an average relative humidity of 78%.

Rainfall

In August, in Grand Island, the rain falls for 26.7 days. Throughout August, 5.51" (140mm) of precipitation is accumulated. Throughout the year, there are 193.1 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Daylight

In August, the average length of the day in Grand Island is 13h and 9min.
On the first day of the month, sunrise is at 6:48 am and sunset at 8:18 pm. On the last day of August, in Grand Island, sunrise is at 7:04 am and sunset at 7:49 pm EDT.

Sunshine

The average sunshine in August is 10.1h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Grand Island. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In August, the UV index of 7 transforms into the following advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.