The highest day temperature in May 2026 was 99°F. The lowest night temperature was 56°F. The average values for day and night temperatures during May were 89.2°F и 72.8°F respectivly.

The average sea surface temperature in May 2026 for Jacksonville was 78.7°F. The maximum and minimum values were 73.8°F and 86.8°F respectively.

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

Precipitation total in May for Jacksonville is 2.4 in.

The average wind speed in May is 7.4 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 Jacksonville in May is 9.4 hours.