The highest day temperature in May 2026 was 82°F. The lowest night temperature was 61°F. The average values for day and night temperatures during May were 71.7°F и 66.4°F respectivly.

The average sea surface temperature in May 2026 for Siesta was 69.1°F. The maximum and minimum values were 66.0°F and 75.0°F respectively.

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

Precipitation total in May for Siesta is 0.4 in.

The average wind speed in May is 9.4 mph. It makes May one of the most windless months of the year for Siesta.

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 in May is 10.9 hours.