The highest day temperature in May 2023 was 89°F. The lowest night temperature was 78°F. The average values for day and night temperatures during May were 85.3°F и 81.9°F respectivly.

The average sea surface temperature in May 2023 for Islamorada was 86.9°F. The maximum and minimum values were 84.0°F and 89.8°F respectively.

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

Precipitation total in May for Islamorada is 1.5 in. It makes may one of the most rainy months of the year.

The average wind speed in May is 11.4 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 Islamorada in May is 7.0 hours.