San Clemente climate

San Clemente Weather in August

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

Average highs run from 21°C on August 1 to 22°C on August 31, and lows from 14°C to 14°C. Normal precipitation for the month is 0 mm over about 0 wet days.

August day by day

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

Normal daily high and low temperature at San Clemente, in °C, with the record for each date.1015202530151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

August at a glance

Average high
22°C
Average low
14°C
Precipitation
0 mm
Reanalysis high
27°CAug 9, 1997
Reanalysis low
11°CAug 26, 2007
Daylight
11 h 32 min to 11 h 50 min
Cloud cover
30%
Humidity
70%
Dew point
11°C
Wind
15.5 km/h

Every day of the month

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

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
Aug 121°C14°C23°C 201211°C 19950%
Aug 221°C14°C24°C 199712°C 20110%
Aug 321°C14°C24°C 199711°C 20040%
Aug 421°C14°C24°C 201512°C 19950%
Aug 521°C14°C24°C 201512°C 20130%
Aug 621°C14°C23°C 201412°C 19940%
Aug 721°C14°C24°C 199712°C 20070%
Aug 822°C14°C26°C 199711°C 20070%
Aug 922°C14°C27°C 199712°C 20070%
Aug 1022°C14°C26°C 199712°C 19930%
Aug 1122°C14°C25°C 199712°C 19920%
Aug 1222°C14°C25°C 199713°C 20130%
Aug 1322°C14°C26°C 199713°C 20120%
Aug 1422°C14°C24°C 199712°C 20070%
Aug 1522°C14°C25°C 199713°C 20050%
Aug 1622°C14°C24°C 199712°C 19950%
Aug 1722°C14°C24°C 201212°C 20070%
Aug 1822°C14°C24°C 201612°C 19980%
Aug 1922°C14°C25°C 201512°C 19980%
Aug 2022°C14°C25°C 199712°C 19980%
Aug 2122°C14°C24°C 199312°C 19980%
Aug 2222°C14°C24°C 199712°C 19950%
Aug 2322°C14°C24°C 199712°C 20030%
Aug 2422°C14°C25°C 201912°C 20130%
Aug 2522°C14°C24°C 201511°C 20070%
Aug 2622°C14°C24°C 200911°C 20070%
Aug 2722°C14°C24°C 201411°C 20070%
Aug 2822°C14°C24°C 199212°C 20070%
Aug 2922°C14°C23°C 201513°C 19960%
Aug 3022°C14°C26°C 200613°C 20020%
Aug 3122°C14°C25°C 201413°C 20100%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at San Clemente, in percent.00.10.10.20.21102030
  • Chance of a wet day

Sunrise and sunset

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

August 1
sunrise 6:25 AM, sunset 5:57 PM
August 31
sunrise 6:10 AM, sunset 6:00 PM

Every day of August: sun and moon

Other months

Sources

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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.