August weather forecast
Key Largo, FL

August brings about the height of the summer season, with warmer temperatures than July and extended daylight hours. Equilibrium between sun-soaked and rainy days provides a perfectly balanced tropical weather experience. Despite the intense sun, the sea temperature remains invitingly warm for all sorts of water sports. This is the month with the maximum cloud cover and the most significant atmospheric pressure dip, adding an interesting dynamic to the weather pattern. The highest recorded temperature reaches 85.5°F (29.7°C) in August, with an impressive rainfall amount of 4.33" (110mm).

Temperature

Key Largo's warmest weather arrives in August, when temperatures average a high of 85.5°F (29.7°C) and a low of 82.9°F (28.3°C).

Heat index

The heat index for August is estimated at a fiery hot 95°F (35°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Key Largo, the average relative humidity in August is 74%.

Rainfall

The month with the most rainfall is August, when the rain falls for 20.9 days and typically aggregates up to 4.33" (110mm) of precipitation.

Ocean temperature

With an average ocean temperature of 86.5°F (30.3°C), August is the month with the warmest seawater.
Note: For a cooling respite, water temperatures above 86°F (30°C) might not be the first choice for many.

Daylight

In Key Largo, the average length of the day in August is 12h and 59min.
On the first day of August in Key Largo, sunrise is at 6:49 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 7:41 pm EDT.

Sunshine

In August, the average sunshine is 10.2h.

UV index

April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: In August, a daily UV index of 7 turns into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.