Michael D Beckwith / CC BY 2.0
San Diego, CA Weather on August 12
San Diego hit 94°F on this date in 1991, a rare summer spike
August 12 typically brings mild San Diego weather with average highs around 78°F and lows near 68°F. The city's recorded history for this date spans 55 years and shows considerable temperature variance, with an extreme high of 94°F set in 1991 standing 16 degrees above normal. The coldest August 12 on record was 60°F in 2015, demonstrating the range of conditions that can occur during what is generally a stable time of year for Southern California's coast.
What to Expect on August 12
Planning for August 12th in San Diego, CA? Great weather for outdoor activities.
Frequently Asked Questions
What was the warmest August 12 ever in San Diego?
The warmest August 12 in San Diego, CA reached 94°F in 1991. That is 16°F above the long-term average high of 78°F.
What was the coldest August 12 ever in San Diego?
The coldest August 12 in San Diego, CA dropped to 60°F in 2015. That is 8°F below the long-term average low of 68°F.
What is the average temperature on August 12 in San Diego?
On August 12, San Diego averages a high of 78°F and a low of 68°F based on 55 years of NOAA weather observations from SAN DIEGO INTL AP.
How many years of weather data are available for August 12 in San Diego?
We have 55 years of weather records for August 12 in San Diego, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
August 12 Weather History in San Diego
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 72°F | 64°F | 0" | -- |
| 2024 | 83°F | 72°F | 0" | -- |
| 2023 | 76°F | 68°F | 0" | -- |
| 2022 | 82°F | 69°F | 0" | -- |
| 2021 | 83°F | 71°F | 0" | -- |
| 2020 | 76°F | 64°F | 0" | -- |
| 2019 | 75°F | 64°F | 0" | -- |
| 2018 | 85°F | 75°F | 0" | -- |
| 2017 | 78°F | 68°F | 0" | -- |
| 2016 | 80°F | 70°F | 0" | -- |
| 2015 | 79°F | 60°F | 0" | -- |
| 2014 | 78°F | 70°F | 0" | -- |
| 2013 | 73°F | 64°F | 0" | -- |
| 2012 | 85°F | 72°F | 0" | -- |
| 2011 | 71°F | 64°F | 0" | -- |
| 2010 | 71°F | 61°F | 0" | -- |
| 2009 | 74°F | 65°F | 0" | -- |
| 2008 | 75°F | 66°F | 0" | -- |
| 2007 | 76°F | 68°F | 0" | -- |
| 2006 | 78°F | 70°F | 0" | -- |
| 2005 | 72°F | 67°F | 0" | -- |
| 2004 | 76°F | 67°F | 0" | -- |
| 2003 | 81°F | 69°F | 0" | -- |
| 2002 | 78°F | 65°F | 0" | -- |
| 2001 | 73°F | 67°F | 0" | -- |
| 2000 | 79°F | 67°F | 0" | -- |
| 1999 | 73°F | 63°F | 0" | -- |
| 1998 | 85°F | 72°F | 0" | -- |
| 1997 | 75°F | 67°F | 0" | -- |
| 1996 | 79°F | 69°F | 0" | -- |
| 1995 | 80°F | 66°F | 0" | -- |
| 1994 | 88°F | 72°F | 0" | -- |
| 1993 | 75°F | 65°F | 0" | -- |
| 1992 | 80°F | 70°F | 0" | -- |
| 1991 | 94°F | 68°F | 0" | -- |
| 1990 | 79°F | 68°F | 0" | -- |
| 1989 | 78°F | 68°F | 0" | -- |
| 1988 | 74°F | 66°F | 0" | -- |
| 1987 | 75°F | 68°F | 0" | -- |
| 1986 | 75°F | 67°F | 0" | -- |
| 1985 | 73°F | 65°F | 0" | -- |
| 1984 | 82°F | 73°F | 0" | -- |
| 1983 | 84°F | 72°F | 0" | -- |
| 1982 | 75°F | 66°F | 0" | -- |
| 1981 | 79°F | 71°F | 0" | -- |
| 1980 | 78°F | 73°F | 0" | -- |
| 1979 | 72°F | 68°F | 0" | -- |
| 1978 | 78°F | 70°F | 0" | -- |
| 1977 | 76°F | 68°F | 0" | -- |
| 1976 | 78°F | 63°F | 0" | -- |
| 1975 | 74°F | 64°F | 0" | -- |
| 1974 | 76°F | 67°F | 0" | -- |
| 1973 | 75°F | 65°F | 0" | -- |
| 1972 | 79°F | 69°F | 0.02" | -- |
| 1971 | 83°F | 71°F | 0" | -- |
Based on 55 years of data from NOAA station: SAN DIEGO INTL AP
How Has August 12 Changed?
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Monthly Climate Averages
Historical temperature and precipitation averages for San Diego, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.