Weather on August 9
San Diego, CA
55 Years of Data
Avg High
77°F
Avg Low
68°F
Warmest
2018
83°F avg
Coldest
1999
66°F avg
About This Date
August 9th in San Diego, CA typically brings pleasant summer weather, with average highs around 77°F and lows near 68°F. Over 55 years of records, the warmest August 9th was in 2018 (83°F average), while the coldest was 1999 (66°F) — a 17°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for August 9th in San Diego, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 67° | 71° | — | — |
| 2024 | 77° | 70° | 73° | — | — |
| 2023 | 78° | 70° | 74° | — | — |
| 2022 | 85° | 70° | 77° | — | — |
| 2021 | 78° | 67° | 72° | — | — |
| 2020 | 75° | 66° | 71° | — | — |
| 2019 | 76° | 65° | 70° | — | — |
| 2018warmest | 90° | 77° | 83° | — | — |
| 2017 | 78° | 69° | 74° | — | — |
| 2016 | 75° | 67° | 71° | — | — |
| 2015 | 75° | 67° | 71° | — | — |
| 2014 | 77° | 69° | 73° | — | — |
| 2013 | 72° | 64° | 68° | — | — |
| 2012 | 79° | 69° | 74° | — | — |
| 2011 | 69° | 62° | 66° | — | — |
| 2010 | 72° | 60° | 66° | — | — |
| 2009 | 74° | 66° | 70° | — | — |
| 2008 | 77° | 69° | 73° | — | — |
| 2007 | 74° | 67° | 70° | — | — |
| 2006 | 80° | 70° | 75° | — | — |
| 2005 | 79° | 68° | 73° | — | — |
| 2004 | 75° | 67° | 71° | — | — |
| 2003 | 83° | 69° | 76° | — | — |
| 2002 | 74° | 64° | 69° | — | — |
| 2001 | 74° | 66° | 70° | — | — |
| 2000 | 78° | 67° | 72° | — | — |
| 1999coldest | 70° | 63° | 66° | — | — |
| 1998 | 83° | 68° | 75° | — | — |
| 1997 | 76° | 67° | 71° | — | — |
| 1996 | 75° | 67° | 71° | — | — |
| 1995 | 78° | 65° | 71° | — | — |
| 1994 | 82° | 68° | 75° | — | — |
| 1993 | 79° | 66° | 72° | — | — |
| 1992 | 79° | 71° | 75° | — | — |
| 1991 | 74° | 61° | 67° | — | — |
| 1990 | 77° | 69° | 73° | — | — |
| 1989 | 76° | 68° | 72° | — | — |
| 1988 | 74° | 65° | 69° | — | — |
| 1987 | 76° | 68° | 72° | — | — |
| 1986 | 74° | 66° | 70° | — | — |
| 1985 | 75° | 68° | 72° | — | — |
| 1984 | 75° | 72° | 73° | — | — |
| 1983 | 84° | 74° | 79° | — | — |
| 1982 | 80° | 69° | 75° | — | — |
| 1981 | 82° | 71° | 77° | — | — |
| 1980 | 78° | 71° | 75° | — | — |
| 1979 | 83° | 71° | 77° | — | — |
| 1978 | 77° | 70° | 73° | — | — |
| 1977 | 76° | 68° | 72° | — | — |
| 1976 | 77° | 67° | 72° | — | — |
| 1975 | 71° | 65° | 68° | — | — |
| 1974 | 74° | 65° | 69° | — | — |
| 1973 | 75° | 65° | 70° | — | — |
| 1972 | 75° | 67° | 71° | — | — |
| 1971 | 82° | 72° | 77° | — | — |
55 years of data from SAN DIEGO INTL AP