The highest day temperature in July 2025 was 80°F. The lowest night temperature was 64°F. The average values for day and night temperatures during July were 76.1°F и 66.6°F respectivly.

The average sea surface temperature in July 2025 for San Diego was 67.8°F. The maximum and minimum values were 64.6°F and 71.4°F respectively.

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

Precipitation total in July for San Diego is 0.6 in.

The average wind speed in July is 6.9 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 San Diego in July is 11.0 hours.