The highest day temperature in March 2026 was 88°F. The lowest night temperature was 49°F. The average values for day and night temperatures during March were 81.6°F и 65.3°F respectivly.

The average sea surface temperature in March 2026 for Siesta Key was 72.4°F. The maximum and minimum values were 67.0°F and 76.4°F respectively.

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

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

The average wind speed in March is 10.1 mph. This value is relatively stable throughout the year.

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 March is 9.0 hours.