San Diego climate

San Diego Weather in July

NASA POWER reanalysis for the half-degree grid cell around San Diego, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 29°C on July 1 to 30°C on July 31, and lows from 19°C to 19°C. Normal precipitation for the month is 50 mm over about 8 wet days.

July day by day

The normal high and low for each date, and the record, in °C.

Normal daily high and low temperature at San Diego, in °C, with the record for each date.15202530354045151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
30°C
Average low
19°C
Precipitation
50 mm
Record high
41°CJul 5, 2015
Record low
19°CJul 10, 1978
Daylight
12 h 43 min to 12 h 34 min
Cloud cover
71%
Humidity
75%
Dew point
18°C
Wind
6.8 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowRecord highRecord lowChance wet
Jul 129°C19°C36°C 201923°C 201328%
Jul 229°C19°C41°C 201523°C 197826%
Jul 329°C19°C39°C 201522°C 200525%
Jul 429°C19°C38°C 201923°C 200524%
Jul 529°C19°C41°C 201522°C 199825%
Jul 629°C19°C38°C 201922°C 199826%
Jul 729°C19°C38°C 201523°C 200026%
Jul 829°C19°C39°C 201924°C 200528%
Jul 929°C19°C37°C 197822°C 200328%
Jul 1029°C19°C38°C 201519°C 197827%
Jul 1129°C19°C39°C 197921°C 198028%
Jul 1229°C19°C37°C 201922°C 198227%
Jul 1329°C19°C39°C 201522°C 200527%
Jul 1429°C19°C36°C 201223°C 201127%
Jul 1530°C19°C38°C 201923°C 199828%
Jul 1630°C19°C37°C 201222°C 200527%
Jul 1730°C19°C39°C 201222°C 198127%
Jul 1830°C19°C38°C 197622°C 197825%
Jul 1930°C19°C39°C 201922°C 198225%
Jul 2030°C19°C38°C 201321°C 200525%
Jul 2130°C19°C39°C 201922°C 197826%
Jul 2230°C19°C40°C 201922°C 197826%
Jul 2330°C19°C39°C 201922°C 198126%
Jul 2430°C19°C37°C 197823°C 200726%
Jul 2530°C19°C38°C 197621°C 197827%
Jul 2630°C19°C39°C 201322°C 198028%
Jul 2730°C19°C40°C 201523°C 202330%
Jul 2830°C19°C39°C 201523°C 201631%
Jul 2930°C19°C39°C 201522°C 197832%
Jul 3030°C19°C39°C 201922°C 202532%
Jul 3130°C19°C37°C 201923°C 201733%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at San Diego, in percent.0102030401102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-5).

July 1
sunrise 5:35 AM, sunset 6:18 PM
July 31
sunrise 5:42 AM, sunset 6:16 PM

Every day of July: sun and moon

Other months

Sources

Records: NOAA GHCN-Daily, station COM00080036, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.