The highest day temperature in May 2025 was 88°F. The lowest night temperature was 78°F. The average values for day and night temperatures during May were 84.2°F и 81.5°F respectivly.

The average sea surface temperature in May 2025 for Cayo Santa Maria was 85.5°F. The maximum and minimum values were 82.2°F and 87.8°F respectively.

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

Precipitation total in May for Cayo Santa Maria is 3.5 in. It makes may one of the most rainy months of the year.

The average wind speed in May is 13.1 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 Cayo Santa Maria in May is 8.1 hours.