The highest day temperature in July 2025 was 101°F. The lowest night temperature was 81°F. The average values for day and night temperatures during July were 94.1°F и 83.9°F respectivly.

The average sea surface temperature in July 2025 for St. Petersburg was 91.2°F. The maximum and minimum values were 89.0°F and 94.0°F respectively.

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

Precipitation total in July for St. Petersburg is 2.1 in. It makes july the most rainy month of the year.

The average wind speed in July is 8.7 mph. It makes July the most windless month of the year for St. Petersburg.

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 St. Petersburg in July is 7.3 hours.