July weather forecast
Siesta Key, FL

July, the same as June, in Siesta Key, Florida, is another tropical summer month, with an average temperature varying between 78.8°F and 88°F.

Temperature

The transition into July marks the average high-temperature at a still tropical 88°F, differing minimally from June's 87.3°F. In the month of July, Siesta Key witnesses a consistent average low-temperature of 78.8°F.

Heat index

The heat index in July is computed to be a torrid 102.2°F. Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in July in Siesta Key is 74%.

Rainfall

In Siesta Key, in July, during 26.2 rainfall days, 5.94" of precipitation is typically accumulated. Throughout the year, in Siesta Key, there are 183.1 rainfall days, and 34.92" of precipitation is accumulated.

Ocean temperature

In Siesta Key, the average seawater temperature in July is 85.5°F.
Note: Ideal surface water temperatures for any water activity fall between 77°F and 84.2°F, offering maximum enjoyment for lengthened periods.

Daylight

The average length of the day in July in Siesta Key is 13h and 40min.
On the first day of July in Siesta Key, sunrise is at 6:39 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 8:19 pm EDT.

Sunshine

The average sunshine in July in Siesta Key is 10.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Siesta Key. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during July leads to these advisories:
Deter overexposure. Protecting against the sun's effects is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.