Honolulu, HI: September

30 September 2026: September 2026 averaged 82.8°F in Honolulu, HI, the warmest September since 2019, tied 7th warmest of 80 (with 2004).

September 2026

Mean temperature: 82.8°F; Warmest since 2019; 7th warmest of 80
Precipitation: 1.16 in; Wettest since 2019; 14th wettest of 85

A normal September in Honolulu, HI (1991 to 2020): a mean temperature of 81.5°F, between 80.5°F and 82.9°F in eight years of ten and 0.54 in of precipitation, between 0.10 in and 2.09 in in eight years of ten.

The mean temperature of every September in Honolulu, HI since 1943: 82.8°F in 2026; the highest is 83.9°F, in 1994.

Normal range, 80.5 to 82.9°F

Every year, ranked, as a table

Every September in Honolulu, HI from 1940 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	82.8	7	88.8	27	76.9	3	1.16	14	0
2025	82.6	10	88.9	25	76.2	5	0.71	31	0
2024	82.4	12	88.9	25	75.8	8	0.06	82	0
2023	82.4	12	89.4	17	75.5	11	0.10	75	0
2022	82	22	89	23	75.1	15	0.43	50	0
2021	81.6	28	88.5	33	74.7	26	0.12	72	0
2020	82.4	12	89.5	15	75.3	14	0.10	75	0
2019	82.9	4	89.1	22	76.6	4	2.13	4	0
2018	81.5	32	87.5	51	75.4	12	1.78	8	0
2017	81.7	27	88.5	33	74.8	24	0.10	75	0
2016	80.6	52	86.5	66	74.6	28	2.92	2	0
2015	83.3	2	88.8	27	77.7	1	4.48	1	0
2014	82.9	4	89.8	10	76	6	0.58	38	0
2013	80.7	49	87.3	57	74.2	39	1.33	11	0
2012	80	61	86.2	72	73.7	47	0.52	41	0
2011	81.4	34	88.4	37	74.4	33	0.07	80	0
2010	80.5	53	87.4	53	73.7	47	0.63	37	0
2009	82.5	11	89.3	20	75.7	9	0.15	69	0
2008	80.5	53	87.4	53	73.5	53	0.43	50	0
2007	81.6	28	88.2	44	74.9	21	0.50	44	0
2006	80.2	58	86.5	66	73.8	46	0.66	34	0
2005	81.1	40	87.6	50	74.6	28	0.90	24	0
2004	82.8	7	89.6	12	75.9	7	1.01	19	0
2003	82	22	88.5	33	75.6	10	0.28	60	0
2002	81.2	39	87.9	48	74.5	31	0.10	75	0
2001	82.1	19	88.8	27	75.4	12	0.28	60	0
2000	80.5	53	87.1	60	73.9	44	0.78	29	0
1999	80.2	58	87.2	58	73.1	63	0.20	67	0
1998	81	43	87.8	49	74.2	39	0.05	83	0
1997	82.7	9	90.2	4	75.1	15	0.67	33	0
1996	81.4	34	88.4	37	74.4	33	0.78	29	0
1995	83.2	3	91.3	1	75	19	0.33	58	0
1994	83.9	1	90.6	3	77.3	2	0.39	54	0
1993	81.1	40	88.8	27	73.4	56	0.10	75	0
1992	81.3	37	88.3	40	74.3	36	2.08	5	0
1991	81.5	32	89.2	21	73.7	47	0.56	39	0
1990	82.3	16	89.6	12	74.9	21	0.98	20	0
1989	81.9	25	89.4	17	74.3	36	0.15	69	0
1988	82.1	19	90	8	74.2	39	0.86	27	0
1987	82.9	4	90.7	2	75.1	15	1.13	16	0
1986	82.1	19	90.2	4	74	43	2.00	7	0
1985	81.1	40	89.5	15	72.7	71	1.28	13	0
1984	81.3	37	89.8	10	72.8	70	1.36	10	0
1983	82.3	16	89.9	9	74.6	28	1.16	14	0
1982	81.4	34	88.3	40	74.4	33	0.52	41	0
1981	80.7	49	88	47	73.4	56	0.39	54	0
1980	81.6	28	89	23	74.2	39	0.41	53	0
1979	81	43	89.4	17	72.7	71	0.47	48	0
1978	80.5	53	88.2	44	72.7	71	0.28	60	0
1977	81.6	28	88.4	37	74.8	24	0.05	83	0
1976	80.7	49	88.3	40	73.1	63	0.33	58	0
1975	79.4	70	87.2	58	71.5	80	0.11	74	0
1974	79.9	63	88.5	33	71.4	83	2.08	5	0
1973	80.9	46	88.6	32	73.3	59	0.64	36	0
1972	80.5	53	87.4	53	73.6	51	0.92	22	0
1971	79.1	73	86.7	65	71.5	80	1.03	18	0
1970	79	75	86.3	69	71.7	79	0.39	54	0
1969	82	22	88.8	27	75.1	15	0.87	26	0
1968	81.9	25	89.6	12	74.3	36	1.30	12	0
1967	82.3	16	90.2	4	74.5	31	0.42	52	0
1966	82.4	12	90.1	7	74.7	26	0.16	68	0
1965	80	61	87.4	53	72.5	75	0.52	41	0
1964	80.2	58	86.8	61	73.6	51	0.97	21	0
1963	81	43	88.1	46	73.9	44	1.47	9	0
1962	79.1	73	85.2	77	73	68	0.66	34	0
1961	79.8	64	86.5	66	73.1	63	0.48	46	0
1960	79.8	64	86	73	73.5	53	0.81	28	0
1959	80.9	46	86.8	61	75	19	0.88	25	0
1958	79.6	69	85.9	74	73.4	56	0.48	46	0
1957	79.8	64	86.3	69	73.3	59	0.07	80	0
1956	79.4	70	85.2	77	73.7	47	0.14	71	0
1955	77	80	83.4	82	70.6	85	0.22	64	0
1954	79.3	72	85.2	77	73.3	59	0.54	40	0
1953	78.8	76	84.7	80	72.9	69	0.71	31	0
1952	78.4	79	84.3	81	72.5	75	0.27	63	0
1951	79.7	67	85.9	74	73.5	53	0.91	23	0
1950	78.7	78	85.3	76	72.1	78	0.49	45	0
1948					74.9	21	1.05	17	8
1947					72.7	71	2.40	3	5
1946	80.8	48	88.3	40	73.2	62	0.12	72	3
1945					71.5	80	0.39	54	5
1944	78.8	76	86.3	69	71.3	84	0.05	83	2
1943	79.7	67	86.8	61	72.5	75	0.21	66	2
1942			87.5	51	73.1	63			5
1941			86.8	61			0.22	64	7
1940					73.1	63	0.46	49	4

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1994	83.9
2015	83.3
1995	83.2
2019	82.9
2014	82.9
1987	82.9
2026	82.8
2004	82.8
1997	82.7
2025	82.6

Coldest
Year	Mean, °F
1955	77
1952	78.4
1950	78.7
1953	78.8
1944	78.8
1970	79
1971	79.1
1962	79.1
1954	79.3
1975	79.4
More years share the last value

Wettest
Year	Precipitation, in
2015	4.48
2016	2.92
1947	2.40
2019	2.13
1992	2.08
1974	2.08
1986	2.00
2018	1.78
1963	1.47
1984	1.36

Driest
Year	Precipitation, in
1998	0.05
1977	0.05
1944	0.05
2024	0.06
2011	0.07
1957	0.07
2023	0.10
2020	0.10
2017	0.10
2002	0.10
More years share the last value

The hottest, coldest and wettest days

Hottest day: 91°F; 16 September 2026
Coldest night: 73°F; 29 September 2026, 13 September 2026, 12 September 2026
Wettest day: 0.84 in; 30 September 2026

Every month, season and year

Months

Seasons

Years

Honolulu, HI the day's answers

All-time records

Every answer in words

September 2026 brought 1.16 in of precipitation in Honolulu, HI, the wettest September since 2019, tied 14th wettest of 85 (with 1983).
The hottest day of September 2026 in Honolulu, HI: 91°F on Wednesday 16 September 2026.
The coldest night of September 2026 in Honolulu, HI: a low of 73°F on Tuesday 29 September 2026, Sunday 13 September 2026 and Saturday 12 September 2026.
The wettest day of September 2026 in Honolulu, HI: 0.84 in on Wednesday 30 September 2026.