Weather on August 20
Honolulu, HI
55 Years of Data
Avg High
86°F
Avg Low
71°F
Warmest
2015
85°F avg
Coldest
2013
73°F avg
About This Date
August 20th in Honolulu, HI typically brings warm summer weather, with average highs around 86°F and lows near 71°F. Over 52 years of records, the warmest August 20th was in 2015 (85°F average), while the coldest was 2013 (73°F) — a 12°F range across recorded history. Rain or other precipitation has occurred on about 13% of August 20th dates historically, with the wettest August 20th recording 1.19" of rain. The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.
Planning for August 20th in Honolulu, HI? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 87° | 71° | 79° | — | — |
| 2024 | 83° | 70° | 76° | — | — |
| 2023 | 83° | 68° | 75° | — | — |
| 2022 | 83° | 69° | 76° | — | — |
| 2021 | 84° | 67° | 75° | — | — |
| 2020 | 82° | 68° | 75° | — | — |
| 2019 | 81° | 70° | 75° | — | — |
| 2018 | 84° | 70° | 77° | — | — |
| 2017 | 86° | 69° | 78° | — | — |
| 2016 | 87° | 69° | 78° | — | — |
| 2015warmest | 91° | 78° | 85° | — | — |
| 2014 | 86° | 71° | 79° | — | — |
| 2013coldest | 82° | 64° | 73° | — | — |
| 2012 | 87° | 66° | 77° | — | — |
| 2011 | 87° | 72° | 79° | — | — |
| 2010 | 87° | 70° | 78° | — | — |
| 2009 | 87° | 76° | 81° | — | — |
| 2008 | 86° | 74° | 80° | 0.05" | — |
| 2007 | 89° | 72° | 80° | — | — |
| 2006 | 87° | 66° | 77° | — | — |
| 2005 | 86° | 72° | 79° | — | — |
| 2004 | 90° | 76° | 83° | — | — |
| 2003 | 89° | 74° | 81° | — | — |
| 2002 | 87° | 71° | 79° | — | — |
| 2001 | 85° | 70° | 77° | — | — |
| 1999 | 86° | 68° | 77° | — | — |
| 1998 | 86° | 71° | 79° | — | — |
| 1997 | 86° | 71° | 79° | — | — |
| 1996 | 88° | 72° | 80° | — | — |
| 1995 | 85° | 71° | 78° | 1.19" | — |
| 1994 | 88° | 77° | 82° | 0.05" | — |
| 1993 | 90° | 75° | 82° | — | — |
| 1992 | 91° | 72° | 81° | — | — |
| 1991 | 88° | 72° | 80° | — | — |
| 1990 | 86° | 71° | 79° | — | — |
| 1989 | 81° | 67° | 74° | — | — |
| 1988 | 86° | 71° | 79° | — | — |
| 1987 | 88° | — | — | — | — |
| 1986 | 87° | 72° | 79° | 0.51" | — |
| 1985 | 88° | 72° | 80° | — | — |
| 1984 | 86° | 74° | 80° | — | — |
| 1983 | 84° | 69° | 77° | — | — |
| 1982 | 85° | 74° | 79° | — | — |
| 1981 | 92° | 65° | 78° | — | — |
| 1978 | 83° | 72° | 77° | — | — |
| 1977 | 90° | 78° | 84° | — | — |
| 1976 | 84° | 75° | 80° | 0.18" | — |
| 1975 | 84° | 71° | 78° | 1.17" | — |
| 1974 | 87° | 75° | 81° | — | — |
| 1973 | 86° | 73° | 80° | — | — |
| 1972 | 85° | 72° | 78° | — | — |
| 1971 | 90° | 75° | 82° | 0.25" | — |
52 years of data from FRENCH FRIGATE SHOALS