July weather forecast
Siesta Key, FL

Weather in July

July, the same as June, in Siesta Key, Florida, is another hot summer month, with an average temperature fluctuating between 88°F (31.1°C) and 78.8°F (26°C).

Temperature

In Siesta Key, the average high-temperature in July is essentially the same as in June - a still tropical 88°F (31.1°C). In July, the average low-temperature is 78.8°F (26°C).

Heat index

In July, the average heat index is computed to be a very hot 102.4°F (39.1°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like pregnancy, differences in body mass, height, and shape, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing 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

In Siesta Key, the average relative humidity in July is 74%.

Rainfall

In Siesta Key, during 26.2 rainfall days, 5.94" (151mm) of precipitation is typically accumulated. In Siesta Key, during the entire year, the rain falls for 183.1 days and collects up to 34.92" (887mm) of precipitation.

Ocean temperature

In July, the average ocean temperature in Siesta Key is 85.5°F (29.7°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in July in Siesta Key, Florida, is 13h and 40min.
On the first day of July, 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

In July, the average sunshine is 10.9h.

UV index

The months with the highest UV index in Siesta Key are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in July interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in July in Siesta Key?

In July, in Siesta Key, the average high-temperature is 88°F (31.1°C), and the average low-temperature is 78.8°F (26°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is computed to be 102.4°F (39.1°C).

What is the average humidity in July in Siesta Key?

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

How many days does it rain in July in Siesta Key?

In Siesta Key, Florida, in July, during 26.2 rainfall days, 5.94" (151mm) of precipitation is typically accumulated.

What is the ocean temperature in July in Siesta Key?

In Siesta Key, the average seawater temperature in July is 85.5°F (29.7°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened 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?

On the first day of July, 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, Florida, is 10.9h.

What is the month 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.

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

The average daily maximum UV index in July in Siesta Key is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

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 40min

The month with the longest days is June (Average daylight: 13h and 50min).
The month with the shortest days is December (Average daylight: 10h and 28min).

  • Average sunshine in July: 10h and 54min

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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