Climate and monthly weather forecast
Siesta Key, FL

Share

Weather in January

January, like December, is another pleasant winter month in Siesta Key, Florida, with an average temperature varying between 68.5°F and 56.1°F. In Siesta Key, the month of January registers the lowest temperatures, averaging 68.5°F at the peak and 56.1°F at the lowest. Weather in January »

Weather in February

February, the last month of the winter in Siesta Key, is also an agreeable month, with temperature in the range of an average low of 58.6°F and an average high of 71.2°F. As Siesta Key, Florida, steps into February, the average high-temperature holds at a still agreeable 71.2°F, hinting at a minor fluctuation from the prior month. Weather in February »

Weather in March

The first month of the spring, March, is a moderately hot month in Siesta Key, Florida, with an average temperature fluctuating between 61.5°F and 74.1°F. With the onset of March, Siesta Key's average high-temperature clocks in at a warm 74.1°F, showing a minor fluctuation from the previous month. Weather in March »

Weather in April

April, the same as March, is a moderately hot spring month in Siesta Key, Florida, with an average temperature fluctuating between 80.2°F and 67.8°F. With the onset of April, the average high-temperature subtly transitions from a warm 74.1°F in March to a still moderately hot 80.2°F. Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Siesta Key, Florida, with temperature in the range of an average high of 84.2°F and an average low of 72.7°F. Transitioning from April to May, Siesta Key observes an average high-temperature of a still warm 84.2°F, differing subtly from the previous month. Weather in May »

Weather in June

June, the first month of the summer in Siesta Key, is a tropical month, with an average temperature fluctuating between 77.5°F and 87.3°F. The commencement of June brings an average high-temperature of a tropical 87.3°F, marking an inconsequential divergence from May. Weather in June »

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. The transition into July marks the average high-temperature at a still tropical 88°F, differing minimally from June's 87.3°F. Weather in July »

Weather in August

August, the last month of the summer in Siesta Key, is also a hot month, with an average temperature fluctuating between 79.7°F and 88.5°F. August is the warmest month, exhibiting average temperatures of 88.5°F at the peak and 79.7°F at the base. For most parts of August, the heat index is computed to be a blisteringly hot 104°F. 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 86.9°F and 77.4°F. The introduction of September sees an average high-temperature of a still tropical 86.9°F, hardly deviating from August. Weather in September »

Weather in October

October, like September, in Siesta Key, Florida, is another warm autumn month, with an average temperature ranging between min 71.8°F and max 82.6°F. Siesta Key greets October with an average high-temperature of a warm 82.6°F, marking a slight deviation from the preceding month. Weather in October »

Weather in November

The last month of the autumn, November, is also a moderately hot month in Siesta Key, Florida, with temperature in the range of an average low of 64.4°F and an average high of 76.3°F. Siesta Key's weather in November involves a mild decrease in the average high-temperature, moving down slightly from October's warm 82.6°F to a still moderately hot 76.3°F. Weather in November »

Weather in December

The first month of the winter, December, is also an agreeable month in Siesta Key, Florida, with an average temperature ranging between min 60.8°F and max 72.5°F. The advent of December reveals an average high-temperature of an agreeable 72.5°F, showing minimal difference from the prior month. Weather in December »
[Resources]

Frequently asked questions

What is the coldest month in Siesta Key?

With an average high-temperature of 68.5°F and an average low-temperature of 56.1°F, January is the coldest month.

How many days does it rain in Siesta Key?

Throughout the year, in Siesta Key, Florida, there are 183.1 rainfall days, and 34.92" of precipitation is accumulated.

When is the ocean coldest in Siesta Key?

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

When is the lowest UV index in Siesta Key?

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

What is the driest month in Siesta Key?

The months with the least rainfall in Siesta Key, Florida, are February and November Rain falls for 8.3 days and accumulates 1.06" of rain.

What are the least humid months in Siesta Key?

March through May, with an average relative humidity of 72%, are the least humid months in Siesta Key, Florida.

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

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Siesta Key, Florida, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

What month has the most sunshine in Siesta Key?

With an average of 11.1h of sunshine, May has the most sunshine of the year in Siesta Key.

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.

When are the longest days in Siesta Key?

With an average of 13h and 48min of daylight, June has the longest days of the year in Siesta Key.

What are the warmest months in Siesta Key?

In Siesta Key, August is the warmest month, with temperatures averaging a high of 88.5°F and a low of 79.7°F.

What is the wettest month in Siesta Key?

August is the month with the most rainfall in Siesta Key, Florida. Rain falls for 26.8 days and accumulates 6.42" of precipitation.

What is the month with the warmest ocean in Siesta Key?

With an average ocean temperature of 86.7°F, August is the month with the warmest seawater in Siesta Key, Florida.

What is the most humid month in Siesta Key?

The most humid month is December, with an average relative humidity of 76%.

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

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

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

With an average of 6.5h of sunshine, December has the least sunshine of the year in Siesta Key.

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).

[Resources]

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).

[Resources]

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).

[Resources]

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%).

[Resources]

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").

[Resources]

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).

[Resources]

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).

[Resources]

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).

[Resources]

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).

[Resources]

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).

[Resources]

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).

[Resources]

Siesta Key, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location