Hilo, HI: December

31 December 2025: December 2025 averaged 73.4°F in Hilo, HI, the warmest December since 2024, tied 13th warmest of 77 (with 2022).

December 2025

Mean temperature: 73.4°F; Warmest since 2024; 13th warmest of 77
Precipitation: 3.84 in; Driest since 2024; 9th driest of 77

A normal December in Hilo, HI (1991 to 2020): a mean temperature of 72.7°F, between 71.6°F and 74.5°F in eight years of ten and 11.09 in of precipitation, between 6.01 in and 20.21 in in eight years of ten.

The mean temperature of every December in Hilo, HI since 1949: 73.4°F in 2025; the highest is 75.4°F, in 2020.

Normal range, 71.6 to 74.5°F

Every year, ranked, as a table

Every December in Hilo, HI from 1949 to 2025, 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
2025	73.4	13	81.5	11	65.2	32	3.84	69	0
2024	73.9	8	81.8	9	66.1	11	2.90	71	1
2023	72.6	37	79.1	50	66	13	7.62	50	0
2022	73.4	13	80.9	17	65.8	21	7.48	51	0
2021	73	23	79.4	45	66.7	5	24.99	6	0
2020	75.4	1	82.9	3	67.9	2	14.42	25	0
2019	74.8	3	81.5	11	68	1	11.19	35	0
2018	73.3	15	80	33	66.6	9	9.97	40	0
2017	71.2	61	78.8	55	63.6	66	9.90	41	0
2016	72.1	46	78.2	62	66.1	11	20.40	10	0
2015	74.6	4	82.5	5	66.7	5	14.10	27	0
2014	72.5	38	79.8	39	65.3	31	6.10	60	0
2013	72.7	32	80.2	28	65.1	35	20.20	12	0
2012	72.5	38	79.3	46	65.8	21	12.04	32	0
2011	71.6	52	77.5	68	65.8	21	20.26	11	0
2010	72.9	26	80.4	26	65.4	28	7.13	54	0
2009	72.5	38	80.5	21	64.5	49	11.49	34	0
2008	71.8	48	78.7	57	65	38	30.38	4	0
2007	72.5	38	79.2	47	65.9	17	17.56	16	0
2006	72.7	32	80	33	65.5	25	6.66	58	0
2005	73.1	20	81.4	13	64.8	43	5.24	63	0
2004	72.8	30	80.1	31	65.5	25	11.00	36	0
2003	73	23	80	33	66	13	10.04	39	0
2002	72.9	26	80.4	26	65.5	25	10.45	37	0
2001	72.7	32	79.5	43	65.9	17	13.77	29	0
2000	71.6	52	79.1	50	64.2	57	4.59	65	0
1999	71.3	59	78.1	64	64.4	53	14.41	26	0
1998	69.9	75	76.5	75	63.3	69	9.89	42	0
1997	72.4	42	80	33	64.8	43	8.10	48	0
1996	73.2	16	80.5	21	65.8	21	6.89	56	0
1995	74.5	5	83.1	2	66	13	4.10	67	0
1994	73	23	80.5	21	65.4	28	6.61	59	0
1993	71.7	51	78.7	57	64.7	46	16.11	19	0
1992	73.6	11	80.5	21	66.7	5	17.02	18	0
1991	72.9	26	79.9	38	65.9	17	15.04	23	0
1990	72.4	42	79.7	41	65.2	32	30.10	5	0
1989	71.3	59	80.1	31	62.4	77	5.71	62	0
1988	74.9	2	82.7	4	67.1	4	13.46	30	0
1987	73.1	20	79.5	43	66.7	5	22.19	8	0
1986	72.8	30	80.5	21	65.1	35	5.75	61	0
1985	71.6	52	78.7	57	64.5	49	2.59	74	0
1984	71.1	62	78.3	61	63.8	62	12.00	33	0
1983	72.9	26	81.2	14	64.5	49	3.37	70	0
1982	71.8	48	78.7	57	64.9	41	6.78	57	0
1981	72	47	78.9	54	65.1	35	18.53	15	0
1980	74.2	7	83.8	1	64.6	48	0.28	77	0
1979	72.7	32	81.1	15	64.4	53	7.40	52	0
1978	71.1	62	77.3	70	64.8	43	8.82	44	0
1977	73.6	11	82.4	7	64.9	41	2.66	73	0
1976	73.2	16	81	16	65.4	28	7.37	53	0
1975	72.2	45	80	33	64.4	53	8.47	46	0
1974	72.3	44	79.6	42	65	38	19.20	14	0
1973	73.8	9	82.5	5	65	38	8.19	47	0
1972	71.4	58	79.2	47	63.6	66	4.01	68	0
1971	70.9	65	77.7	67	64	60	32.19	3	0
1970	72.7	32	80.2	28	65.2	32	35.25	2	0
1969	71.5	57	79.8	39	63.2	71	8.10	48	0
1968	73.7	10	80.9	17	66.5	10	24.82	7	0
1967	73.2	16	80.6	20	65.9	17	17.10	17	0
1966	74.3	6	80.9	17	67.7	3	15.09	22	0
1965	69.9	75	75.9	77	63.8	62	14.94	24	0
1964	73.2	16	81.6	10	64.7	46	9.65	43	0
1963	73.1	20	82	8	64.1	58	0.77	76	0
1962	70.7	69	79	53	62.5	76	2.31	75	0
1961	70.7	69	77.8	66	63.6	66	16.04	20	0
1960	71.6	52	80.2	28	63	73	4.12	66	0
1959	70.7	69	77.3	70	64.1	58	13.97	28	0
1958	70.8	67	78.8	55	62.7	75	2.86	72	0
1957	71.6	52	77.2	73	66	13	19.71	13	0
1956	71.8	48	79.1	50	64.5	49	10.37	38	0
1955	71.1	62	79.2	47	63.1	72	4.90	64	0
1954	69.5	77	76.1	76	62.9	74	50.82	1	0
1953	70.6	73	77.5	68	63.7	64	8.49	45	0
1952	70.7	69	78.2	62	63.3	69	7.03	55	0
1951	70.9	65	78	65	63.7	64	20.97	9	0
1950	70.8	67	77.3	70	64.3	56	15.90	21	0
1949	70.5	74	77	74	63.9	61	13.38	31	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2020	75.4
1988	74.9
2019	74.8
2015	74.6
1995	74.5
1966	74.3
1980	74.2
2024	73.9
1973	73.8
1968	73.7

Coldest
Year	Mean, °F
1954	69.5
1998	69.9
1965	69.9
1949	70.5
1953	70.6
1962	70.7
1961	70.7
1959	70.7
1952	70.7
1958	70.8
More years share the last value

Wettest
Year	Precipitation, in
1954	50.82
1970	35.25
1971	32.19
2008	30.38
1990	30.10
2021	24.99
1968	24.82
1987	22.19
1951	20.97
2016	20.40

Driest
Year	Precipitation, in
1980	0.28
1963	0.77
1962	2.31
1985	2.59
1977	2.66
1958	2.86
2024	2.90
1983	3.37
2025	3.84
1972	4.01

The hottest, coldest and wettest days

Hottest day: 87°F; 18 December 2025, 14 December 2025
Coldest night: 61°F; 15 December 2025, 12 December 2025, 11 December 2025
Wettest day: 1.32 in; 23 December 2025

Every month, season and year

Months

Seasons

Years

Hilo, HI the day's answers

All-time records

Every answer in words

December 2025 brought 3.84 in of precipitation in Hilo, HI, the driest December since 2024, 9th driest of 77.
The hottest day of December 2025 in Hilo, HI: 87°F on Thursday 18 December 2025 and Sunday 14 December 2025.
The coldest night of December 2025 in Hilo, HI: a low of 61°F on Monday 15 December 2025, Friday 12 December 2025 and Thursday 11 December 2025.
The wettest day of December 2025 in Hilo, HI: 1.32 in on Tuesday 23 December 2025.