Weather on May 21
Honolulu, HI
55 Years of Data
Avg High
83°F
Avg Low
68°F
Warmest
2004
82°F avg
Coldest
1976
71°F avg
About This Date
May 21st in Honolulu, HI typically brings warm spring weather, with average highs around 83°F and lows near 68°F. Over 51 years of records, the warmest May 21st was in 2004 (82°F average), while the coldest was 1976 (71°F) — a 11°F range across recorded history. Rain or other precipitation has occurred on about 22% of May 21st dates historically, with the wettest May 21st recording 1.52" of rain. The last decade has been 3.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.4°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Honolulu, HI? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 69° | 77° | — | — |
| 2024 | 80° | 66° | 73° | — | — |
| 2023 | 80° | 66° | 73° | — | — |
| 2022 | 79° | 68° | 73° | — | — |
| 2021 | 78° | 65° | 71° | — | — |
| 2020 | 78° | 65° | 71° | — | — |
| 2019 | 84° | 66° | 75° | — | — |
| 2018 | 78° | 65° | 71° | — | — |
| 2017 | 81° | 65° | 73° | — | — |
| 2016 | 79° | 65° | 72° | — | — |
| 2014 | 85° | 68° | 76° | — | — |
| 2013 | 82° | 63° | 72° | — | — |
| 2012 | 85° | 68° | 76° | — | — |
| 2011 | 86° | 69° | 78° | — | — |
| 2010 | 87° | 74° | 80° | — | — |
| 2009 | 82° | 67° | 74° | — | — |
| 2008 | 82° | 70° | 76° | 0.25" | — |
| 2007 | 86° | 74° | 80° | — | — |
| 2006 | 81° | 62° | 71° | — | — |
| 2005 | 85° | 71° | 78° | — | — |
| 2004warmest | 86° | 77° | 82° | 0.05" | — |
| 2003 | 84° | 64° | 74° | — | — |
| 2002 | 83° | 72° | 77° | — | — |
| 2001 | 83° | 68° | 75° | — | — |
| 1999 | 85° | 66° | 75° | — | — |
| 1998 | 83° | 68° | 75° | — | — |
| 1997 | 80° | 66° | 73° | — | — |
| 1996 | 86° | 70° | 78° | — | — |
| 1995 | 85° | 69° | 77° | 0.13" | — |
| 1994 | 83° | 68° | 75° | — | — |
| 1993 | 85° | 69° | 77° | — | — |
| 1992 | 83° | 69° | 76° | 0.08" | — |
| 1991 | 81° | 69° | 75° | 1.52" | — |
| 1990 | 84° | 64° | 74° | — | — |
| 1989 | 83° | 65° | 74° | — | — |
| 1988 | 84° | 67° | 75° | — | — |
| 1987 | 81° | 67° | 74° | — | — |
| 1986 | 84° | 70° | 77° | — | — |
| 1985 | 81° | 64° | 72° | — | — |
| 1984 | 85° | 70° | 77° | — | — |
| 1983 | 79° | 66° | 72° | — | — |
| 1982 | 82° | 66° | 74° | — | — |
| 1981 | 91° | 66° | 79° | 0.08" | — |
| 1978 | 82° | 69° | 76° | 0.56" | — |
| 1977 | 78° | 74° | 76° | — | — |
| 1976coldest | 81° | 62° | 71° | 0.03" | — |
| 1975 | 82° | 68° | 75° | 0.03" | — |
| 1974 | 83° | 76° | 79° | — | — |
| 1973 | 81° | 69° | 75° | 0.1" | — |
| 1972 | 80° | 66° | 73° | 0.03" | — |
| 1971 | 85° | 66° | 75° | — | — |
51 years of data from FRENCH FRIGATE SHOALS