The highest day temperature in July 2025 was 100°F. The lowest night temperature was 77°F. The average values for day and night temperatures during July were 94.4°F и 79.7°F respectivly.

The average sea surface temperature in July 2025 for Port St. Lucie was 85.8°F. The maximum and minimum values were 82.2°F and 89.8°F respectively.

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

Precipitation total in July for Port St. Lucie is 1.3 in.

The average wind speed in July is 8.0 mph. It makes July the most windless month of the year for Port St. Lucie.

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 Port St. Lucie in July is 6.8 hours.