Weather on August 18
Newport Beach, CA
55 Years of Data
Avg High
73°F
Avg Low
65°F
Warmest
2020
78°F avg
Coldest
1981
63°F avg
About This Date
August 18th in Newport Beach, CA typically brings pleasant summer weather, with average highs around 73°F and lows near 65°F. Over 55 years of records, the warmest August 18th was in 2020 (78°F average), while the coldest was 1981 (63°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 5% of August 18th dates historically. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Newport Beach, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 66° | 70° | — | — |
| 2024 | 83° | 68° | 75° | — | — |
| 2023 | 73° | 66° | 70° | — | — |
| 2022 | 72° | 67° | 69° | — | — |
| 2021 | 72° | 70° | 71° | — | — |
| 2020warmest | 87° | 70° | 78° | — | — |
| 2019 | 72° | 65° | 68° | — | — |
| 2018 | 77° | 71° | 74° | — | — |
| 2017 | 73° | 67° | 70° | — | — |
| 2016 | 72° | 64° | 68° | — | — |
| 2015 | 74° | 70° | 72° | — | — |
| 2014 | 75° | 67° | 71° | — | — |
| 2013 | 69° | 63° | 66° | — | — |
| 2012 | 75° | 69° | 72° | — | — |
| 2011 | 70° | 63° | 66° | — | — |
| 2010 | 74° | 64° | 69° | — | — |
| 2009 | 75° | 65° | 70° | — | — |
| 2008 | 70° | 66° | 68° | — | — |
| 2007 | 76° | 69° | 72° | — | — |
| 2006 | 73° | 64° | 69° | — | — |
| 2005 | 72° | 63° | 67° | — | — |
| 2004 | 71° | 65° | 68° | — | — |
| 2003 | 79° | 68° | 73° | — | — |
| 2002 | 69° | 66° | 68° | — | — |
| 2001 | 71° | 66° | 69° | — | — |
| 2000 | 74° | 67° | 70° | — | — |
| 1999 | 76° | 60° | 68° | — | — |
| 1998 | 81° | 67° | 74° | — | — |
| 1997 | 71° | 62° | 67° | — | — |
| 1996 | 71° | 65° | 68° | — | — |
| 1995 | 68° | 60° | 64° | — | — |
| 1994 | 75° | 71° | 73° | — | — |
| 1993 | 68° | 65° | 66° | — | — |
| 1992 | 75° | 67° | 71° | — | — |
| 1991 | 67° | 65° | 66° | — | — |
| 1990 | 71° | 65° | 68° | — | — |
| 1989 | 69° | 62° | 66° | — | — |
| 1988 | 67° | 61° | 64° | — | — |
| 1987 | 70° | 63° | 66° | — | — |
| 1986 | 81° | 64° | 72° | — | — |
| 1985 | 68° | 63° | 65° | — | — |
| 1984 | 80° | 72° | 76° | 0.05" | — |
| 1983 | 77° | 71° | 74° | 0.03" | — |
| 1982 | 73° | 64° | 69° | — | — |
| 1981coldest | 71° | 55° | 63° | — | — |
| 1980 | 74° | 67° | 70° | — | — |
| 1979 | 72° | 64° | 68° | — | — |
| 1978 | 71° | 58° | 64° | — | — |
| 1977 | 73° | 66° | 70° | 0.25" | — |
| 1976 | 72° | 60° | 66° | — | — |
| 1975 | 70° | 61° | 65° | — | — |
| 1974 | 71° | 62° | 67° | — | — |
| 1973 | 75° | 63° | 69° | — | — |
| 1972 | 73° | 62° | 68° | — | — |
| 1971 | 75° | 63° | 69° | — | — |
55 years of data from NEWPORT BEACH HARBOR