June weather forecast
Siesta Key, FL

Weather in June

The first month of the summer, June, is a hot month in Siesta Key, Florida, with an average temperature fluctuating between 87.3°F (30.7°C) and 77.5°F (25.3°C).

Temperature

In June, the average high-temperature is practically the same as in May - a hot 87.3°F (30.7°C). In Siesta Key, the average low-temperature is 77.5°F (25.3°C).

Heat index

In June, the average heat index is computed to be a very hot 100.9°F (38.3°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 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, wind, differences in body mass, height, and shape, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Siesta Key, the average relative humidity in June is 75%.

Rainfall

In June, the rain falls for 22.2 days. Throughout June, 5.55" (141mm) of precipitation is 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 Siesta Key, the average seawater temperature in June is 82.4°F (28°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

June has the longest days of the year in Siesta Key, Florida, with an average of 13h and 50min of daylight.
On the first day of the month, sunrise is at 6:35 am and sunset at 8:20 pm. On the last day of June, sunrise is at 6:38 am and sunset at 8:29 pm EDT.

Sunshine

In June, the average sunshine in Siesta Key, Florida, is 10.8h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In June, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 June in Siesta Key?

In June, in Siesta Key, the average high-temperature is 87.3°F (30.7°C), and the average low-temperature is 77.5°F (25.3°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in June is computed to be 100.9°F (38.3°C).

What is the average humidity in June in Siesta Key?

In June, the average relative humidity in Siesta Key is 75%.

How much does it rain in Siesta Key in June?

In Siesta Key, in June, during 22.2 rainfall days, 5.55" (141mm) of precipitation is typically accumulated.

How warm is the water in June in Siesta Key?

In Siesta Key, Florida, in June, the average water temperature is 82.4°F (28°C). 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.

When are the longest days in Siesta Key?

June has the longest days of the year in Siesta Key, with an average of 13h and 50min of daylight.

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

In Siesta Key, the average day length in June is 13h and 50min.

When are sunrise and sunset in June in Siesta Key?

On the first day of June in Siesta Key, Florida, sunrise is at 6:35 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 8:29 pm EDT.

How many hours of sunshine does Siesta Key have in June?

In Siesta Key, Florida, the average sunshine duration in June is 10.8h.

When is 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 June in Siesta Key?

In Siesta Key, Florida, the average daily maximum UV index in June is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Siesta Key, FL

Average temperature in June - Siesta Key, FL
  • Average high temperature in June: 87.3°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 June: 77.5°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 June
Siesta Key, FL

Average pressure in June - Siesta Key, FL
  • Average pressure in June: 29.99"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 June
Siesta Key, FL

Average wind speed in June - Siesta Key, FL
  • Average wind speed in June: 6.8mph

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 June
Siesta Key, FL

Average humidity in June - Siesta Key, FL
  • Average humidity in June: 75%

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 June
Siesta Key, FL

Average rainfall in June - Siesta Key, FL
  • Average rainfall in June: 5.55"

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 June
Siesta Key, FL

Average rainfall days in June - Siesta Key, FL
  • Average rainfall days in June: 22.2 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 June
Siesta Key, FL

Average sea temperature in June - Siesta Key, FL
  • Average sea temperature in June: 82.5°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 June /
Average sunshine in June
Siesta Key, FL

Average daylight in June / Average sunshine in June - Siesta Key, FL
  • Average daylight in June: 13h and 50min

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 June: 10h and 48min

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 June
Siesta Key, FL

Average sunshine days in June - Siesta Key, FL
  • Average sunshine days in June: 5.8 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 June
Siesta Key, FL

Average UV index in June - Siesta Key, FL
  • Average UV index in June: 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 June
Siesta Key, FL

Average cloud cover in June - Siesta Key, FL
  • Average cloud cover in June: 27

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 June
Siesta Key, FL

Average visibility in June - Siesta Key, FL
  • Average visibility in June: 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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