The highest day temperature in March 2025 was 91°F. The lowest night temperature was 47°F. The average values for day and night temperatures during March were 81.6°F и 60.9°F respectivly.

The average sea surface temperature in March 2025 for Sanibel Island was 73.1°F. The maximum and minimum values were 71.4°F and 76.0°F respectively.

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

Precipitation total in March for Sanibel Island is 0.4 in. It makes march one of the least rainy months of the year.

The average wind speed in March is 9.7 mph.

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 March is 8.9 hours.