The highest day temperature in October 2025 was 94°F. The lowest night temperature was 71°F. The average values for day and night temperatures during October were 88.8°F и 76.4°F respectivly.

The average sea surface temperature in October 2025 for Sanibel Island was 85.1°F. The maximum and minimum values were 82.2°F and 88.8°F respectively.

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

Precipitation total in October for Sanibel Island is 1.1 in.

The average wind speed in October is 10.5 mph. It makes October the most windy month of the year for Sanibel Island.

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 Sanibel Island in October is 7.5 hours.