San Diego Weather in January
Average highs run from 66°F on January 1 to 67°F on January 31, and lows from 48°F to 50°F. Normal precipitation for the month is 1.67 in over about 7 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 66°F
- Average low
- 49°F
- Precipitation
- 1.67 in
- Record high
- 88°FJan 10, 1953
- Record low
- 29°FJan 4, 1949
- Chance of a freeze
- 0%
- Daylight
- 10 h 03 min to 10 h 37 min
- Cloud cover
- 41%
- Humidity
- 65%
- Dew point
- 40°F
- Wind
- 8.1 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 |
|---|---|---|---|---|---|
| Jan 1 | 66°F | 48°F | 76°F 1964 | 39°F 1951 | 24% |
| Jan 2 | 66°F | 48°F | 78°F 1984 | 36°F 1942 | 24% |
| Jan 3 | 66°F | 48°F | 83°F 1943 | 34°F 1949 | 24% |
| Jan 4 | 66°F | 48°F | 86°F 1969 | 29°F 1949 | 24% |
| Jan 5 | 66°F | 49°F | 83°F 2012 | 30°F 1949 | 24% |
| Jan 6 | 66°F | 49°F | 83°F 2006 | 35°F 1950 | 24% |
| Jan 7 | 66°F | 49°F | 82°F 2003 | 34°F 1971 | 24% |
| Jan 8 | 66°F | 49°F | 78°F 1983 | 37°F 1949 | 24% |
| Jan 9 | 66°F | 49°F | 80°F 1983 | 37°F 1989 | 24% |
| Jan 10 | 66°F | 49°F | 88°F 1953 | 38°F 2026 | 24% |
| Jan 11 | 66°F | 49°F | 83°F 1983 | 37°F 1949 | 24% |
| Jan 12 | 66°F | 49°F | 82°F 1986 | 37°F 1949 | 23% |
| Jan 13 | 66°F | 49°F | 80°F 1948 | 31°F 1963 | 23% |
| Jan 14 | 66°F | 49°F | 82°F 1975 | 35°F 1963 | 23% |
| Jan 15 | 66°F | 49°F | 88°F 2021 | 35°F 2007 | 23% |
| Jan 16 | 66°F | 49°F | 86°F 1976 | 34°F 1947 | 23% |
| Jan 17 | 67°F | 49°F | 86°F 1977 | 36°F 1947 | 23% |
| Jan 18 | 67°F | 49°F | 81°F 1971 | 37°F 1949 | 23% |
| Jan 19 | 67°F | 49°F | 87°F 2005 | 39°F 1948 | 23% |
| Jan 20 | 67°F | 49°F | 80°F 1942 | 38°F 1963 | 23% |
| Jan 21 | 67°F | 49°F | 81°F 1976 | 39°F 1966 | 23% |
| Jan 22 | 67°F | 49°F | 80°F 2013 | 39°F 1945 | 23% |
| Jan 23 | 67°F | 49°F | 81°F 1953 | 39°F 1947 | 23% |
| Jan 24 | 67°F | 49°F | 82°F 1951 | 40°F 1947 | 23% |
| Jan 25 | 67°F | 49°F | 81°F 1951 | 36°F 1949 | 23% |
| Jan 26 | 67°F | 49°F | 82°F 2003 | 36°F 1949 | 23% |
| Jan 27 | 67°F | 50°F | 83°F 1984 | 37°F 1950 | 23% |
| Jan 28 | 67°F | 50°F | 83°F 1962 | 36°F 1948 | 23% |
| Jan 29 | 67°F | 50°F | 82°F 2018 | 39°F 1949 | 23% |
| Jan 30 | 67°F | 50°F | 83°F 2018 | 34°F 1949 | 23% |
| Jan 31 | 67°F | 50°F | 83°F 2003 | 38°F 1946 | 23% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 6:51 AM, sunset 4:54 PM
- January 31
- sunrise 6:44 AM, sunset 5:21 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093112 (North Island Nas), public domain. Records: NOAA GHCN-Daily, station USW00023188, 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.