San Clemente Weather in December
Average highs run from 69°F on December 1 to 68°F on December 31, and lows from 45°F to 44°F. Normal precipitation for the month is 1.87 in over about 4 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 67°F
- Average low
- 44°F
- Precipitation
- 1.87 in
- Record high
- 90°FDec 29, 1963
- Record low
- 27°FDec 21, 1968
- Chance of a freeze
- 8%
- Daylight
- 10 h 07 min to 9 h 59 min
- Cloud cover
- 41%
- Humidity
- 61%
- Dew point
- 40°F
- Wind
- 6.7 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 69°F | 45°F | 79°F 1976 | 36°F 1991 | 11% |
| Dec 2 | 68°F | 45°F | 85°F 1989 | 36°F 1991 | 12% |
| Dec 3 | 68°F | 44°F | 85°F 1989 | 38°F 1948 | 12% |
| Dec 4 | 68°F | 44°F | 80°F 2006 | 35°F 1948 | 12% |
| Dec 5 | 68°F | 44°F | 80°F 1965 | 35°F 1948 | 12% |
| Dec 6 | 68°F | 44°F | 83°F 1979 | 36°F 1953 | 13% |
| Dec 7 | 68°F | 44°F | 81°F 2001 | 35°F 1960 | 13% |
| Dec 8 | 67°F | 44°F | 84°F 2020 | 33°F 1956 | 13% |
| Dec 9 | 67°F | 44°F | 85°F 1957 | 32°F 1968 | 13% |
| Dec 10 | 67°F | 44°F | 80°F 1973 | 36°F 1994 | 13% |
| Dec 11 | 67°F | 44°F | 84°F 1958 | 29°F 1949 | 13% |
| Dec 12 | 67°F | 44°F | 81°F 1952 | 33°F 1972 | 14% |
| Dec 13 | 67°F | 44°F | 82°F 1953 | 31°F 1949 | 14% |
| Dec 14 | 67°F | 44°F | 88°F 1953 | 34°F 1947 | 14% |
| Dec 15 | 67°F | 44°F | 82°F 1958 | 33°F 1987 | 14% |
| Dec 16 | 67°F | 44°F | 85°F 1976 | 34°F 1948 | 14% |
| Dec 17 | 67°F | 44°F | 79°F 1996 | 34°F 1916 | 15% |
| Dec 18 | 67°F | 44°F | 86°F 2000 | 35°F 1968 | 15% |
| Dec 19 | 67°F | 44°F | 82°F 1954 | 34°F 1958 | 15% |
| Dec 20 | 67°F | 44°F | 80°F 1954 | 33°F 1976 | 15% |
| Dec 21 | 67°F | 44°F | 78°F 1960 | 27°F 1968 | 15% |
| Dec 22 | 67°F | 44°F | 77°F 1963 | 31°F 1968 | 15% |
| Dec 23 | 67°F | 44°F | 76°F 1963 | 29°F 1990 | 16% |
| Dec 24 | 67°F | 44°F | 78°F 1947 | 32°F 1948 | 16% |
| Dec 25 | 67°F | 44°F | 84°F 1972 | 30°F 1976 | 16% |
| Dec 26 | 67°F | 44°F | 80°F 1947 | 32°F 1987 | 16% |
| Dec 27 | 67°F | 44°F | 81°F 1947 | 33°F 1988 | 16% |
| Dec 28 | 67°F | 44°F | 77°F 1997 | 34°F 1969 | 16% |
| Dec 29 | 67°F | 44°F | 90°F 1963 | 35°F 1954 | 16% |
| Dec 30 | 68°F | 44°F | 89°F 1980 | 32°F 1947 | 17% |
| Dec 31 | 68°F | 44°F | 78°F 1968 | 34°F 1982 | 17% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 6:36 AM, sunset 4:43 PM
- December 31
- sunrise 6:54 AM, sunset 4:53 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00044647 (Laguna Beach), public domain. Records: NOAA GHCN-Daily, station USC00046377, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.