The highest day temperature in October 2025 was 96°F. The lowest night temperature was 67°F. The average values for day and night temperatures during October were 89.5°F и 72.7°F respectivly.

The average sea surface temperature in October 2025 for Siesta Key was 83.8°F. The maximum and minimum values were 80.4°F and 88.4°F respectively.

Most of the days in October are sunny but you can also expect cloudy and gloomy days.

Precipitation total in October for Siesta Key is 0.5 in. It makes october one of the least rainy months of the year.

The average wind speed in October is 10.4 mph. It makes October one of the most windy months of the year for Siesta Key.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Siesta Key in October is 7.6 hours.