July weather forecast
Siesta Key, FL

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Weather in July

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.
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FAQ

How hot is July in Siesta Key?

The high-temperature, in July, in Siesta Key, records 88°F, while the low-temperature is 78.8°F. In July, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is computed to be 102.2°F.

What is the average humidity in July in Siesta Key?

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

How much does it rain in Siesta Key in July?

In Siesta Key, Florida, in July, during 26.2 rainfall days, 5.94" of precipitation is typically accumulated.

How warm is the water in July in Siesta Key?

In Siesta Key, the average seawater temperature in July is 85.5°F. Water temperature between 77°F and 84.2°F is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Siesta Key have in July?

In Siesta Key, the average day length in July is 13h and 40min.

When are sunrise and sunset in July in Siesta Key?

In July, on the first day of the month, 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.

How long on average sun shines in July in Siesta Key?

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

What are the months with the highest UV index in Siesta Key?

May through September, with an average maximum UV index of 7, are months with the highest UV index in Siesta Key, Florida.

What is the UV index intensity in July in Siesta Key?

In July, the average daily maximum UV index in Siesta Key is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Siesta Key, FL

Average temperature in July - Siesta Key, FL
  • Average high temperature in July: 88°F

The warmest month (with the highest average high temperature) is August (88.5°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in July: 78.8°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).

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Average pressure in July
Siesta Key, FL

Average pressure in July - Siesta Key, FL
  • Average pressure in July: 30.02"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

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Average wind speed in July
Siesta Key, FL

Average wind speed in July - Siesta Key, FL
  • Average wind speed in July: 6.4mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

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Average humidity in July
Siesta Key, FL

Average humidity in July - Siesta Key, FL
  • Average humidity in July: 74%

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are March, April and May (72%).

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Average rainfall in July
Siesta Key, FL

Average rainfall in July - Siesta Key, FL
  • Average rainfall in July: 5.94"

The wettest month (with the highest rainfall) is August (6.42").
The driest months (with the least rainfall) are February and November (1.06").

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Average rainfall days in July
Siesta Key, FL

Average rainfall days in July - Siesta Key, FL
  • Average rainfall days in July: 26.2 days

The month with the highest number of rainy days is August (26.8 days).
The months with the least rainy days are January, February and November (8.3 days).

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Average sea temperature in July
Siesta Key, FL

Average sea temperature in July - Siesta Key, FL
  • Average sea temperature in July: 85.4°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64.1°F).

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Average daylight in July /
Average sunshine in July
Siesta Key, FL

Average daylight in July / Average sunshine in July - Siesta Key, FL
  • Average daylight in July: 13h and 4min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in July: 10h and 5min

The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in July
Siesta Key, FL

Average sunshine days in July - Siesta Key, FL
  • Average sunshine days in July: 2.7 days

The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is August (2.5 days).

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Average UV index in July
Siesta Key, FL

Average UV index in July - Siesta Key, FL
  • Average UV index in July: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).

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Average cloud cover in July
Siesta Key, FL

Average cloud cover in July - Siesta Key, FL
  • Average cloud cover in July: 28

The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 22).

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Average visibility in July
Siesta Key, FL

Average visibility in July - Siesta Key, FL
  • Average visibility in July: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Siesta Key, Florida, USA

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