Climate and monthly weather forecast
Siesta Key, FL

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Weather in January

January, like December, is another pleasant winter month in Siesta Key, Florida, with an average temperature fluctuating between 68.5°F (20.3°C) and 56.1°F (13.4°C). The coldest temperatures occur during January, when averages reach a peak of 68.5°F (20.3°C) and a low of 56.1°F (13.4°C). Weather in January »

Weather in February

February, the last month of the winter in Siesta Key, is another pleasant month, with an average temperature fluctuating between 71.2°F (21.8°C) and 58.6°F (14.8°C). February's arrival brings an average high-temperature of a still pleasant 71.2°F (21.8°C), demonstrating subtle variation from the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Siesta Key, is a moderately hot month, with an average temperature fluctuating between 61.5°F (16.4°C) and 74.1°F (23.4°C). As March takes its course, Siesta Key's average high-temperature registers at a moderately hot 74.1°F (23.4°C), closely aligning with the preceding month. Weather in March »

Weather in April

April, the same as March, is a moderately hot spring month in Siesta Key, Florida, with temperature in the range of an average low of 67.8°F (19.9°C) and an average high of 80.2°F (26.8°C). In April, the meteorological conditions subtly change with the average high-temperature edging from a warm 74.1°F (23.4°C) in March to a still moderately hot 80.2°F (26.8°C). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Siesta Key, Florida, with an average temperature varying between 72.7°F (22.6°C) and 84.2°F (29°C). The shift from April to May is characterized by an average high-temperature of a still warm 84.2°F (29°C), not significantly different from the 80.2°F (26.8°C) of April. Weather in May »

Weather in June

June, the first month of the summer in Siesta Key, is a tropical month, with temperature in the range of an average low of 77.5°F (25.3°C) and an average high of 87.3°F (30.7°C). With June's arrival, Siesta Key's weather records an average high-temperature of a hot 87.3°F (30.7°C), marking little difference from May's 84.2°F (29°C). Weather in June »

Weather in July

July, the same as June, in Siesta Key, Florida, is another tropical summer month, with an average temperature ranging between min 78.8°F (26°C) and max 88°F (31.1°C). July's onset sees an average high-temperature of a still tropical 88°F (31.1°C), exhibiting a slight fluctuation from the previous month. Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Siesta Key, Florida, with an average temperature fluctuating between 79.7°F (26.5°C) and 88.5°F (31.4°C). August, with its average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 79.7°F (26.5°C), holds the record as the warmest month. August's average heat index is evaluated at a blisteringly hot 104°F (40°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a hot month in Siesta Key, Florida, with an average temperature fluctuating between 77.4°F (25.2°C) and 86.9°F (30.5°C). The commencement of September brings an average high-temperature of a still hot 86.9°F (30.5°C), marking an inconsequential divergence from August. Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Siesta Key, Florida, with an average temperature varying between 71.8°F (22.1°C) and 82.6°F (28.1°C). October records an average high-temperature of a warm 82.6°F (28.1°C), indicating a minor variation from the preceding month. Weather in October »

Weather in November

November, the last month of the autumn in Siesta Key, is also a moderately hot month, with an average temperature varying between 76.3°F (24.6°C) and 64.4°F (18°C). As November commences, the average high-temperature subtly reduces, transitioning from 82.6°F (28.1°C) in October to a still warm 76.3°F (24.6°C). Weather in November »

Weather in December

December, the first month of the winter in Siesta Key, is still a pleasant month, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 60.8°F (16°C). The average high-temperature in December, at an agreeable 72.5°F (22.5°C), reveals a modest deviation from November's 76.3°F (24.6°C). Weather in December »
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Frequently asked questions

What are the coldest months in Siesta Key?

January brings the lowest temperatures in Siesta Key, Florida, with an average high of 68.5°F (20.3°C) and an average low of 56.1°F (13.4°C).

How many days does it rain in Siesta Key?

In Siesta Key, during the entire year, the rain falls for 183.1 days and collects up to 34.92" (887mm) of precipitation.

When is the ocean coldest in Siesta Key?

With an average ocean temperature of 64°F (17.8°C), January is the month with the coldest seawater in Siesta Key, Florida.

When is the lowest UV index in Siesta Key?

With an average maximum UV index of 4, January is the month with the lowest UV index.

What is the driest month in Siesta Key?

The months with the least rainfall are February and November Rain falls for 8.3 days and accumulates 1.06" (27mm) of rain.

What is the least humid month in Siesta Key?

The months with the lowest humidity are March through May, with an average relative humidity of 72%.

When is Daylight Saving Time (DST) in Siesta Key?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Siesta Key, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What month has the most sunshine in Siesta Key?

May has the most sunshine of the year, with an average of 11.1h of sunshine.

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 in Siesta Key.

When are the longest days in Siesta Key?

June has the longest days of the year, with an average of 13h and 48min of daylight.

What month is the hottest in Siesta Key?

Siesta Key, Florida, witnesses the warmest weather in August, with temperatures averaging a high of 88.5°F (31.4°C) and a low of 79.7°F (26.5°C).

What is the wettest month in Siesta Key?

The month with the most rainfall in Siesta Key is August, when the rain falls for 26.8 days and typically aggregates up to 6.42" (163mm) of precipitation.

When is the ocean warmest in Siesta Key?

The month with the warmest seawater in Siesta Key is August, with an average ocean temperature of 86.7°F (30.4°C).

What is the most humid month in Siesta Key?

December is the most humid month in Siesta Key, with an average relative humidity of 76%.

What is the month with the shortest days in Siesta Key?

December has the shortest days of the year in Siesta Key, with an average of 10h and 30min of daylight.

What is the month with the least sunshine in Siesta Key?

The month with the least sunshine is December, with an average of 6.5h of sunshine.

Average temperature
Siesta Key, FL

Average temperature - Siesta Key, FL

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).

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
Siesta Key, FL

Average pressure - Siesta Key, FL

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
Siesta Key, FL

Average wind speed - Siesta Key, FL

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
Siesta Key, FL

Average humidity - Siesta Key, FL

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
Siesta Key, FL

Average rainfall - Siesta Key, FL

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
Siesta Key, FL

Average rainfall days - Siesta Key, FL

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
Siesta Key, FL

Average sea temperature - Siesta Key, FL

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 / Average sunshine
Siesta Key, FL

Average daylight / Average sunshine - Siesta Key, FL

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).

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
Siesta Key, FL

Average sunshine days - Siesta Key, FL

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
Siesta Key, FL

Average UV index - Siesta Key, FL

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 visibility
Siesta Key, FL

Average visibility - Siesta Key, FL

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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