Kailua 446 Weather Records (USC00512679)

Record envelope, standing records and threshold days for Kailua 446 (USC00512679), Hawaii, United States, with 119 years of record.

Key Facts for Kailua 446

Kailua 446 (USC00512679) is a weather station in Hawaii, United States at 20.89 latitude and -156.21 longitude, 213 m (700 ft) above sea level.
The station reports from 1905 to 2023, 119 years of record.
1,464 records set at Kailua 446 still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Kailua 446 set a daily record precipitation of 42.7 mm (1.7 in) on 5 July 2022.

About the Station

Location: Hawaii, United States, 20.89 latitude, -156.21 longitude.
Elevation: 213 m (700 ft).
Period of record: 1905 to 2023, 119 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Kailua 446. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Kailua 446, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	29.4 C (84.9 F)	8.3 C (46.9 F)	n/a	n/a
Feb	30.6 C (87.1 F)	7.8 C (46.0 F)	n/a	n/a
Mar	30.0 C (86.0 F)	6.7 C (44.1 F)	n/a	n/a
Apr	31.7 C (89.1 F)	8.3 C (46.9 F)	n/a	n/a
May	30.0 C (86.0 F)	10.0 C (50.0 F)	n/a	n/a
Jun	31.7 C (89.1 F)	11.7 C (53.1 F)	n/a	n/a
Jul	32.2 C (90.0 F)	12.2 C (54.0 F)	n/a	n/a
Aug	32.2 C (90.0 F)	12.8 C (55.0 F)	n/a	n/a
Sep	32.2 C (90.0 F)	11.1 C (52.0 F)	n/a	n/a
Oct	30.0 C (86.0 F)	10.6 C (51.1 F)	n/a	n/a
Nov	30.0 C (86.0 F)	11.1 C (52.0 F)	n/a	n/a
Dec	30.6 C (87.1 F)	8.9 C (48.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Kailua 446 still stand. 2007 holds the most, with 169.

Standing records at Kailua 446 by the year they were set
Year set	Standing records
1905	3
1906	3
1907	9
1908	4
1909	2
1910	3
1911	3
1912	4
1913	4
1914	10
1915	7
1916	11
1917	6
1918	4
1919	2
1920	6
1921	5
1922	23
1923	17
1924	4
1925	9
1926	56
1927	14
1928	35
1929	38
1930	9
1931	3
1932	6
1933	1
1934	3
1935	10
1936	5
1937	3
1938	8
1939	2
1940	21
1941	7
1942	4
1943	4
1944	2
1946	3
1947	5
1948	2
1949	4
1950	4
1951	5
1952	3
1953	2
1954	16
1956	5
1957	7
1958	11
1959	15
1960	3
1961	4
1962	11
1963	7
1964	7
1965	4
1966	10
1967	19
1968	25
1969	3
1970	2
1971	3
1972	9
1973	2
1974	5
1975	5
1976	5
1977	3
1978	23
1979	22
1980	14
1981	22
1982	25
1983	7
1984	12
1985	8
1986	17
1987	8
1988	4
1989	5
1990	4
1991	7
1992	13
1993	4
1994	3
1995	5
1996	5
1997	4
1998	2
1999	2
2000	1
2001	1
2002	11
2003	8
2004	15
2005	10
2006	39
2007	169
2008	147
2009	129
2010	122
2011	1
2014	1
2015	6
2016	3
2017	3
2018	1
2019	1
2020	1

All-Time Record Progression

11 new records

11 all-time records were set at Kailua 446 between 15 November 1965 and 16 March 2009. Each dot is a new record.

When Kailua 446 set new all-time records
Date	Kind	Detail
1965-11-15	Record daily precipitation	Record daily precipitation 386.1 mm (15.2 in)
1972-09-09	Record high minimum temperature	Record high minimum temperature 25.0 C (77.0 F)
1985-10-23	Record high minimum temperature	Record high minimum temperature 26.1 C (79.0 F)
1990-03-01	Record low maximum temperature	Record low maximum temperature 16.7 C (62.1 F)
2002-02-12	Record low maximum temperature	Record low maximum temperature 16.1 C (61.0 F)
2002-03-19	Record low maximum temperature	Record low maximum temperature 14.4 C (57.9 F)
2007-01-23	Record low minimum temperature	Record low minimum temperature 9.4 C (48.9 F)
2007-02-05	Record low minimum temperature	Record low minimum temperature 7.8 C (46.0 F)
2008-01-30	Record low maximum temperature	Record low maximum temperature 13.3 C (55.9 F)
2009-03-13	Record low maximum temperature	Record low maximum temperature 11.7 C (53.1 F)
2009-03-16	Record low minimum temperature	Record low minimum temperature 6.7 C (44.1 F)

Wettest Day of Each Month

Nov: 386.1 mm (15.2 in)

The wettest day on record for each calendar month at Kailua 446. The most was 386.1 mm (15.2 in) on 15 November 1965.

Record daily precipitation for each month at Kailua 446
Month	Record daily precipitation (mm)	Date
Jan	304.8 mm (12.0 in)	31 January 1922
Feb	231.1 mm (9.1 in)	4 February 1965
Mar	284.5 mm (11.2 in)	25 March 1994
Apr	271.8 mm (10.7 in)	3 April 1918
May	292.1 mm (11.5 in)	13 May 2013
Jun	135.6 mm (5.3 in)	25 June 1941
Jul	208.3 mm (8.2 in)	30 July 1997
Aug	231.6 mm (9.1 in)	9 August 1967
Sep	142.2 mm (5.6 in)	15 September 2005
Oct	205.0 mm (8.1 in)	6 October 1919
Nov	386.1 mm (15.2 in)	15 November 1965
Dec	174.0 mm (6.9 in)	3 December 1912

Period of Record Coverage

1905 to 2022

118 years of record at Kailua 446, 1905 to 2022. 40 years have data for under 90 percent of days and are left out of rankings: 1925, 1936, 1945, 1973, 1974, 1975, 1976, 1977 and others.

Days with data per year at Kailua 446
Year	Days with data	Share of year	Complete
1905	365	100%	Yes
1906	329	90%	Yes
1907	364	100%	Yes
1908	366	100%	Yes
1909	334	92%	Yes
1910	344	94%	Yes
1911	363	99%	Yes
1912	365	100%	Yes
1913	364	100%	Yes
1914	362	99%	Yes
1915	364	100%	Yes
1916	351	96%	Yes
1917	352	96%	Yes
1918	365	100%	Yes
1919	365	100%	Yes
1920	344	94%	Yes
1921	365	100%	Yes
1922	356	98%	Yes
1923	361	99%	Yes
1924	364	99%	Yes
1925	326	89%	No
1926	365	100%	Yes
1927	340	93%	Yes
1928	353	96%	Yes
1929	365	100%	Yes
1930	347	95%	Yes
1931	358	98%	Yes
1932	365	100%	Yes
1933	365	100%	Yes
1934	359	98%	Yes
1935	364	100%	Yes
1936	304	83%	No
1937	360	99%	Yes
1938	365	100%	Yes
1939	351	96%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	364	100%	Yes
1943	364	100%	Yes
1944	362	99%	Yes
1945	319	87%	No
1946	363	99%	Yes
1947	364	100%	Yes
1948	365	100%	Yes
1949	365	100%	Yes
1950	364	100%	Yes
1951	365	100%	Yes
1952	365	100%	Yes
1953	364	100%	Yes
1954	363	99%	Yes
1955	365	100%	Yes
1956	364	99%	Yes
1957	365	100%	Yes
1958	363	99%	Yes
1959	364	100%	Yes
1960	363	99%	Yes
1961	364	100%	Yes
1962	365	100%	Yes
1963	363	99%	Yes
1964	362	99%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	364	100%	Yes
1968	362	99%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	325	89%	No
1974	253	69%	No
1975	254	70%	No
1976	252	69%	No
1977	251	69%	No
1978	304	83%	No
1979	335	92%	Yes
1980	345	94%	Yes
1981	326	89%	No
1982	350	96%	Yes
1983	339	93%	Yes
1984	332	91%	Yes
1985	338	93%	Yes
1986	250	68%	No
1987	247	68%	No
1988	242	66%	No
1989	245	67%	No
1990	245	67%	No
1991	248	68%	No
1992	254	69%	No
1993	249	68%	No
1994	249	68%	No
1995	247	68%	No
1996	256	70%	No
1997	248	68%	No
1998	259	71%	No
1999	333	91%	Yes
2000	361	99%	Yes
2001	363	99%	Yes
2002	364	100%	Yes
2003	362	99%	Yes
2004	355	97%	Yes
2005	361	99%	Yes
2006	321	88%	No
2007	318	87%	No
2008	235	64%	No
2009	187	51%	No
2010	218	60%	No
2011	184	50%	No
2012	182	50%	No
2013	174	48%	No
2014	194	53%	No
2015	188	52%	No
2016	190	52%	No
2017	116	32%	No
2018	169	46%	No
2019	115	32%	No
2020	27	7%	No
2021	27	7%	No
2022	45	12%	No

Latest Records

Latest records at Kailua 446
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
5 July 2022	Kailua 446, US	daily rain	42.7 mm (1.7 in)	8.7 mm (0.34 in)	79 years	40 of 100 (Notable)
22 December 2021	Kailua 446, US	daily low max (Tie)	18.9 C (66.0 F)	tie	12 years	3 of 100 (Routine)
6 May 2020	Kailua 446, US	daily low max	18.3 C (64.9 F)	0.6 C (1.1 F)	11 years	16 of 100 (Routine)
15 April 2020	Kailua 446, US	daily high min (Tie)	19.4 C (66.9 F)	tie	106 years	10 of 100 (Routine)
10 February 2020	Kailua 446, US	daily low max (Tie)	17.8 C (64.0 F)	tie	10 years	3 of 100 (Routine)
7 January 2020	Kailua 446, US	daily high min (Tie)	19.4 C (66.9 F)	tie	36 years	5 of 100 (Routine)
26 November 2019	Kailua 446, US	daily high min (Tie)	21.1 C (70.0 F)	tie	40 years	5 of 100 (Routine)
25 November 2019	Kailua 446, US	daily high min (Tie)	20.6 C (69.1 F)	tie	104 years	10 of 100 (Routine)
18 July 2019	Kailua 446, US	daily high min (Tie)	21.7 C (71.1 F)	tie	96 years	9 of 100 (Routine)
9 July 2019	Kailua 446, US	daily high min (Tie)	22.2 C (72.0 F)	tie	38 years	5 of 100 (Routine)
27 June 2019	Kailua 446, US	daily high max (Tie)	28.9 C (84.0 F)	tie	92 years	9 of 100 (Routine)
7 March 2019	Kailua 446, US	daily low max (Tie)	18.3 C (64.9 F)	tie	81 years	8 of 100 (Routine)
11 February 2019	Kailua 446, US	daily low max	16.7 C (62.1 F)	0.5 C (0.9 F)	9 years	14 of 100 (Routine)
29 August 2018	Kailua 446, US	daily high min (Tie)	21.7 C (71.1 F)	tie	84 years	8 of 100 (Routine)
20 August 2018	Kailua 446, US	daily high min (Tie)	22.2 C (72.0 F)	tie	36 years	5 of 100 (Routine)
10 August 2018	Kailua 446, US	daily rain	49.5 mm (1.9 in)	2.3 mm (0.09 in)	88 years	37 of 100 (Notable)
18 May 2018	Kailua 446, US	daily high min (Tie)	20.6 C (69.1 F)	tie	51 years	6 of 100 (Routine)
9 May 2018	Kailua 446, US	daily low max (Tie)	19.4 C (66.9 F)	tie	9 years	3 of 100 (Routine)
8 May 2018	Kailua 446, US	daily rain	83.8 mm (3.3 in)	15.2 mm (0.6 in)	28 years	26 of 100 (Routine)
23 April 2018	Kailua 446, US	daily high min (Tie)	19.4 C (66.9 F)	tie	77 years	8 of 100 (Routine)

Climate Trend

71 complete years, 1905 to 2005

One stripe for each of 71 complete years at Kailua 446, 1905 to 2005. Blue stripes are years cooler than the station's own mean of 21.4 C (70.4 F); red stripes are warmer. The coolest year was 2005, at 19.1 C (66.4 F), and the warmest was 1926, at 22.6 C (72.7 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Kailua 446 as warming stripes, 1905 to 2005
Year	Annual mean temperature	Difference from the station mean
1905	20.8 C	-0.55 C
1907	21.3 C	-0.08 C
1908	20.8 C	-0.57 C
1911	20.3 C	-1.01 C
1912	20.7 C	-0.68 C
1913	21.2 C	-0.19 C
1914	21.0 C	-0.37 C
1915	21.1 C	-0.26 C
1916	21.3 C	-0.09 C
1918	21.2 C	-0.11 C
1919	21.4 C	+0.08 C
1921	21.5 C	+0.17 C
1922	21.7 C	+0.36 C
1923	21.9 C	+0.50 C
1924	21.2 C	-0.12 C
1926	22.6 C	+1.25 C
1928	22.2 C	+0.89 C
1929	22.0 C	+0.67 C
1931	21.2 C	-0.11 C
1932	21.6 C	+0.22 C
1933	21.0 C	-0.40 C
1934	21.6 C	+0.29 C
1935	21.8 C	+0.40 C
1937	21.2 C	-0.19 C
1938	22.1 C	+0.77 C
1940	22.4 C	+1.00 C
1941	21.7 C	+0.39 C
1942	21.8 C	+0.49 C
1943	22.0 C	+0.60 C
1944	21.8 C	+0.40 C
1946	21.5 C	+0.12 C
1947	21.4 C	+0.08 C
1948	21.3 C	-0.01 C
1949	21.0 C	-0.40 C
1950	21.3 C	-0.03 C
1951	21.8 C	+0.40 C
1952	20.9 C	-0.42 C
1953	21.1 C	-0.28 C
1954	21.4 C	+0.05 C
1955	20.8 C	-0.54 C
1956	21.5 C	+0.18 C
1957	21.4 C	+0.06 C
1959	21.9 C	+0.52 C
1960	21.5 C	+0.18 C
1961	21.2 C	-0.15 C
1962	21.3 C	-0.06 C
1963	21.4 C	+0.09 C
1964	21.5 C	+0.15 C
1965	21.3 C	-0.05 C
1966	21.2 C	-0.11 C
1967	21.9 C	+0.55 C
1968	22.4 C	+1.06 C
1969	21.4 C	+0.03 C
1970	21.6 C	+0.24 C
1971	21.5 C	+0.13 C
1972	21.4 C	0.00 C
1976	21.4 C	+0.04 C
1978	22.1 C	+0.71 C
1979	21.6 C	+0.28 C
1980	21.7 C	+0.33 C
1981	22.1 C	+0.78 C
1982	21.9 C	+0.50 C
1983	21.4 C	+0.05 C
1984	22.1 C	+0.77 C
1985	21.8 C	+0.42 C
2000	20.7 C	-0.70 C
2001	20.3 C	-1.10 C
2002	19.6 C	-1.78 C
2003	19.7 C	-1.64 C
2004	19.5 C	-1.87 C
2005	19.1 C	-2.26 C

The annual mean temperature here has fallen by 0.06 C (0.00 to 0.12) per decade over 1905 to 2005. In Fahrenheit: 0.11 F (0.01 to 0.21) per decade. The slope is a straight line fitted to 71 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kailua 446
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.06 C (-0.12 to 0.00) per decade	-0.11 F (-0.21 to -0.01) per decade	1905 to 2005	71	Fall
Mean daily maximum	-0.07 C (-0.14 to 0.00) per decade	-0.13 F (-0.25 to -0.01) per decade	1905 to 2005	71	Fall
Mean daily minimum	-0.05 C (-0.11 to 0.01) per decade	-0.09 F (-0.19 to 0.02) per decade	1905 to 2005	71	Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1905 to 2023

Yearly extremes at Kailua 446: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.2 C (90.0 F)	1916	28.9 C (84.0 F)	118
Coldest night (TNn)	6.7 C (44.1 F)	2009	12.8 C (55.0 F)	118
Wettest day (Rx1day)	386.1 mm (15.2 in)	1965	127.0 mm (5.0 in)	119
Wettest five days (Rx5day)	664.5 mm (26.2 in)	1965	225.8 mm (8.9 in)	115
Longest dry spell (CDD)	22 days	1945	9 days	119

Hottest day (TXx)

The hottest day of the year at Kailua 446, 1905 to 2023. The record is 32.2 C (90.0 F) in 1916, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at Kailua 446 by year
Year	Hottest day (TXx)
1905	27.8 C (82.0 F)
1906	30.6 C (87.1 F)
1907	28.9 C (84.0 F)
1908	28.3 C (82.9 F)
1909	30.6 C (87.1 F)
1910	26.7 C (80.1 F)
1911	27.2 C (81.0 F)
1912	28.3 C (82.9 F)
1913	29.4 C (84.9 F)
1914	30.6 C (87.1 F)
1915	29.4 C (84.9 F)
1916	32.2 C (90.0 F)
1917	28.9 C (84.0 F)
1918	31.7 C (89.1 F)
1919	28.9 C (84.0 F)
1920	28.9 C (84.0 F)
1921	29.4 C (84.9 F)
1922	28.9 C (84.0 F)
1923	32.2 C (90.0 F)
1924	28.3 C (82.9 F)
1925	30.6 C (87.1 F)
1926	31.1 C (88.0 F)
1927	31.7 C (89.1 F)
1928	30.0 C (86.0 F)
1929	30.0 C (86.0 F)
1930	30.0 C (86.0 F)
1931	27.2 C (81.0 F)
1932	29.4 C (84.9 F)
1933	28.3 C (82.9 F)
1934	28.9 C (84.0 F)
1935	30.6 C (87.1 F)
1936	28.9 C (84.0 F)
1937	28.3 C (82.9 F)
1938	28.9 C (84.0 F)
1939	27.8 C (82.0 F)
1940	28.9 C (84.0 F)
1941	28.9 C (84.0 F)
1942	30.0 C (86.0 F)
1943	27.8 C (82.0 F)
1944	27.8 C (82.0 F)
1945	28.3 C (82.9 F)
1946	30.0 C (86.0 F)
1947	32.2 C (90.0 F)
1948	27.8 C (82.0 F)
1949	27.2 C (81.0 F)
1950	30.0 C (86.0 F)
1951	28.9 C (84.0 F)
1952	28.3 C (82.9 F)
1953	28.3 C (82.9 F)
1954	30.0 C (86.0 F)
1955	28.9 C (84.0 F)
1956	28.9 C (84.0 F)
1957	29.4 C (84.9 F)
1958	30.6 C (87.1 F)
1959	29.4 C (84.9 F)
1960	28.9 C (84.0 F)
1961	29.4 C (84.9 F)
1962	29.4 C (84.9 F)
1963	29.4 C (84.9 F)
1964	29.4 C (84.9 F)
1965	29.4 C (84.9 F)
1966	29.4 C (84.9 F)
1967	28.9 C (84.0 F)
1968	31.1 C (88.0 F)
1969	29.4 C (84.9 F)
1970	30.6 C (87.1 F)
1971	27.8 C (82.0 F)
1972	30.0 C (86.0 F)
1973	27.2 C (81.0 F)
1974	29.4 C (84.9 F)
1975	28.3 C (82.9 F)
1976	28.9 C (84.0 F)
1977	28.3 C (82.9 F)
1978	28.9 C (84.0 F)
1979	29.4 C (84.9 F)
1980	28.3 C (82.9 F)
1981	28.9 C (84.0 F)
1982	30.0 C (86.0 F)
1983	27.8 C (82.0 F)
1984	28.3 C (82.9 F)
1985	28.9 C (84.0 F)
1986	30.0 C (86.0 F)
1987	30.0 C (86.0 F)
1988	28.3 C (82.9 F)
1989	28.9 C (84.0 F)
1990	28.9 C (84.0 F)
1991	30.0 C (86.0 F)
1992	30.6 C (87.1 F)
1993	29.4 C (84.9 F)
1994	28.3 C (82.9 F)
1995	28.9 C (84.0 F)
1996	29.4 C (84.9 F)
1997	28.9 C (84.0 F)
1998	27.2 C (81.0 F)
1999	26.1 C (79.0 F)
2000	27.8 C (82.0 F)
2001	27.2 C (81.0 F)
2002	26.1 C (79.0 F)
2003	27.2 C (81.0 F)
2004	26.7 C (80.1 F)
2005	26.1 C (79.0 F)
2006	26.1 C (79.0 F)
2007	22.2 C (72.0 F)
2008	24.4 C (75.9 F)
2009	30.6 C (87.1 F)
2010	26.7 C (80.1 F)
2011	26.7 C (80.1 F)
2012	26.7 C (80.1 F)
2013	27.2 C (81.0 F)
2014	27.8 C (82.0 F)
2015	30.6 C (87.1 F)
2016	28.3 C (82.9 F)
2017	27.2 C (81.0 F)
2018	27.8 C (82.0 F)
2019	28.9 C (84.0 F)
2020	25.6 C (78.1 F)
2021	25.6 C (78.1 F)
2022	25.0 C (77.0 F)
2023	n/a

Coldest night (TNn)

The coldest night of the year at Kailua 446, 1905 to 2023. The record is 6.7 C (44.1 F) in 2009, marked on the chart; the median year is 12.8 C (55.0 F).

Coldest night (TNn) at Kailua 446 by year
Year	Coldest night (TNn)
1905	11.7 C (53.1 F)
1906	12.8 C (55.0 F)
1907	13.3 C (55.9 F)
1908	10.6 C (51.1 F)
1909	12.2 C (54.0 F)
1910	12.2 C (54.0 F)
1911	12.2 C (54.0 F)
1912	11.7 C (53.1 F)
1913	13.3 C (55.9 F)
1914	12.8 C (55.0 F)
1915	10.6 C (51.1 F)
1916	12.2 C (54.0 F)
1917	12.8 C (55.0 F)
1918	13.3 C (55.9 F)
1919	10.0 C (50.0 F)
1920	13.3 C (55.9 F)
1921	14.4 C (57.9 F)
1922	12.8 C (55.0 F)
1923	15.0 C (59.0 F)
1924	12.2 C (54.0 F)
1925	14.4 C (57.9 F)
1926	13.3 C (55.9 F)
1927	12.8 C (55.0 F)
1928	11.1 C (52.0 F)
1929	12.2 C (54.0 F)
1930	10.6 C (51.1 F)
1931	13.9 C (57.0 F)
1932	12.8 C (55.0 F)
1933	11.7 C (53.1 F)
1934	13.3 C (55.9 F)
1935	13.3 C (55.9 F)
1936	13.9 C (57.0 F)
1937	12.8 C (55.0 F)
1938	15.0 C (59.0 F)
1939	14.4 C (57.9 F)
1940	12.2 C (54.0 F)
1941	11.7 C (53.1 F)
1942	10.6 C (51.1 F)
1943	12.2 C (54.0 F)
1944	13.3 C (55.9 F)
1945	11.7 C (53.1 F)
1946	10.0 C (50.0 F)
1947	12.2 C (54.0 F)
1948	13.3 C (55.9 F)
1949	12.2 C (54.0 F)
1950	13.3 C (55.9 F)
1951	10.6 C (51.1 F)
1952	12.2 C (54.0 F)
1953	11.1 C (52.0 F)
1954	10.6 C (51.1 F)
1955	12.8 C (55.0 F)
1956	13.3 C (55.9 F)
1957	12.2 C (54.0 F)
1958	11.1 C (52.0 F)
1959	13.3 C (55.9 F)
1960	11.1 C (52.0 F)
1961	11.7 C (53.1 F)
1962	10.0 C (50.0 F)
1963	13.3 C (55.9 F)
1964	15.0 C (59.0 F)
1965	12.2 C (54.0 F)
1966	12.2 C (54.0 F)
1967	11.1 C (52.0 F)
1968	12.8 C (55.0 F)
1969	11.1 C (52.0 F)
1970	11.7 C (53.1 F)
1971	12.8 C (55.0 F)
1972	12.8 C (55.0 F)
1973	13.3 C (55.9 F)
1974	15.0 C (59.0 F)
1975	15.0 C (59.0 F)
1976	12.2 C (54.0 F)
1977	13.9 C (57.0 F)
1978	12.8 C (55.0 F)
1979	13.9 C (57.0 F)
1980	13.9 C (57.0 F)
1981	13.3 C (55.9 F)
1982	13.3 C (55.9 F)
1983	12.8 C (55.0 F)
1984	15.6 C (60.1 F)
1985	11.7 C (53.1 F)
1986	12.8 C (55.0 F)
1987	12.2 C (54.0 F)
1988	14.4 C (57.9 F)
1989	13.3 C (55.9 F)
1990	12.2 C (54.0 F)
1991	13.3 C (55.9 F)
1992	12.8 C (55.0 F)
1993	11.7 C (53.1 F)
1994	11.7 C (53.1 F)
1995	11.7 C (53.1 F)
1996	12.2 C (54.0 F)
1997	12.8 C (55.0 F)
1998	10.6 C (51.1 F)
1999	12.8 C (55.0 F)
2000	11.7 C (53.1 F)
2001	12.8 C (55.0 F)
2002	11.1 C (52.0 F)
2003	10.6 C (51.1 F)
2004	10.0 C (50.0 F)
2005	10.0 C (50.0 F)
2006	11.1 C (52.0 F)
2007	7.8 C (46.0 F)
2008	8.3 C (46.9 F)
2009	6.7 C (44.1 F)
2010	8.3 C (46.9 F)
2011	13.3 C (55.9 F)
2012	13.3 C (55.9 F)
2013	12.8 C (55.0 F)
2014	13.9 C (57.0 F)
2015	13.3 C (55.9 F)
2016	12.8 C (55.0 F)
2017	7.8 C (46.0 F)
2018	12.8 C (55.0 F)
2019	13.3 C (55.9 F)
2020	15.6 C (60.1 F)
2021	16.1 C (61.0 F)
2022	15.0 C (59.0 F)
2023	n/a

Wettest day (Rx1day)

The wettest day of the year at Kailua 446, 1905 to 2023. The record is 386.1 mm (15.2 in) in 1965, marked on the chart; the median year is 127.0 mm (5.0 in).

Wettest day (Rx1day) at Kailua 446 by year
Year	Wettest day (Rx1day)
1905	115.6 mm (4.6 in)
1906	111.0 mm (4.4 in)
1907	102.9 mm (4.1 in)
1908	98.0 mm (3.9 in)
1909	103.6 mm (4.1 in)
1910	161.8 mm (6.4 in)
1911	126.2 mm (5.0 in)
1912	174.0 mm (6.9 in)
1913	95.5 mm (3.8 in)
1914	182.9 mm (7.2 in)
1915	164.8 mm (6.5 in)
1916	100.1 mm (3.9 in)
1917	99.1 mm (3.9 in)
1918	271.8 mm (10.7 in)
1919	205.0 mm (8.1 in)
1920	216.7 mm (8.5 in)
1921	173.5 mm (6.8 in)
1922	304.8 mm (12.0 in)
1923	224.3 mm (8.8 in)
1924	121.2 mm (4.8 in)
1925	110.2 mm (4.3 in)
1926	112.3 mm (4.4 in)
1927	125.7 mm (4.9 in)
1928	78.7 mm (3.1 in)
1929	156.2 mm (6.1 in)
1930	137.2 mm (5.4 in)
1931	86.4 mm (3.4 in)
1932	221.0 mm (8.7 in)
1933	123.2 mm (4.9 in)
1934	64.8 mm (2.6 in)
1935	120.4 mm (4.7 in)
1936	111.8 mm (4.4 in)
1937	116.3 mm (4.6 in)
1938	102.9 mm (4.1 in)
1939	108.0 mm (4.3 in)
1940	116.8 mm (4.6 in)
1941	188.0 mm (7.4 in)
1942	166.9 mm (6.6 in)
1943	107.2 mm (4.2 in)
1944	87.4 mm (3.4 in)
1945	111.3 mm (4.4 in)
1946	159.5 mm (6.3 in)
1947	136.7 mm (5.4 in)
1948	111.5 mm (4.4 in)
1949	59.9 mm (2.4 in)
1950	149.9 mm (5.9 in)
1951	111.3 mm (4.4 in)
1952	99.8 mm (3.9 in)
1953	71.1 mm (2.8 in)
1954	69.9 mm (2.8 in)
1955	111.5 mm (4.4 in)
1956	133.4 mm (5.3 in)
1957	242.1 mm (9.5 in)
1958	99.1 mm (3.9 in)
1959	170.2 mm (6.7 in)
1960	194.3 mm (7.6 in)
1961	175.3 mm (6.9 in)
1962	93.0 mm (3.7 in)
1963	215.4 mm (8.5 in)
1964	113.0 mm (4.4 in)
1965	386.1 mm (15.2 in)
1966	138.4 mm (5.4 in)
1967	231.6 mm (9.1 in)
1968	213.4 mm (8.4 in)
1969	177.8 mm (7.0 in)
1970	142.2 mm (5.6 in)
1971	181.4 mm (7.1 in)
1972	152.4 mm (6.0 in)
1973	78.7 mm (3.1 in)
1974	221.0 mm (8.7 in)
1975	88.9 mm (3.5 in)
1976	67.1 mm (2.6 in)
1977	94.5 mm (3.7 in)
1978	116.8 mm (4.6 in)
1979	228.6 mm (9.0 in)
1980	254.0 mm (10.0 in)
1981	143.5 mm (5.6 in)
1982	190.5 mm (7.5 in)
1983	58.4 mm (2.3 in)
1984	213.4 mm (8.4 in)
1985	71.1 mm (2.8 in)
1986	198.1 mm (7.8 in)
1987	226.1 mm (8.9 in)
1988	182.9 mm (7.2 in)
1989	233.7 mm (9.2 in)
1990	154.9 mm (6.1 in)
1991	259.1 mm (10.2 in)
1992	139.7 mm (5.5 in)
1993	147.3 mm (5.8 in)
1994	284.5 mm (11.2 in)
1995	78.7 mm (3.1 in)
1996	157.5 mm (6.2 in)
1997	208.3 mm (8.2 in)
1998	68.6 mm (2.7 in)
1999	114.3 mm (4.5 in)
2000	101.6 mm (4.0 in)
2001	55.9 mm (2.2 in)
2002	104.1 mm (4.1 in)
2003	119.4 mm (4.7 in)
2004	127.0 mm (5.0 in)
2005	208.3 mm (8.2 in)
2006	142.2 mm (5.6 in)
2007	46.2 mm (1.8 in)
2008	109.2 mm (4.3 in)
2009	140.2 mm (5.5 in)
2010	124.5 mm (4.9 in)
2011	142.2 mm (5.6 in)
2012	175.3 mm (6.9 in)
2013	292.1 mm (11.5 in)
2014	104.1 mm (4.1 in)
2015	198.1 mm (7.8 in)
2016	137.2 mm (5.4 in)
2017	134.6 mm (5.3 in)
2018	83.8 mm (3.3 in)
2019	88.1 mm (3.5 in)
2020	88.9 mm (3.5 in)
2021	137.2 mm (5.4 in)
2022	76.2 mm (3.0 in)
2023	68.6 mm (2.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Kailua 446, 1905 to 2023. The record is 664.5 mm (26.2 in) in 1965, marked on the chart; the median year is 225.8 mm (8.9 in).

Wettest five days (Rx5day) at Kailua 446 by year
Year	Wettest five days (Rx5day)
1905	194.8 mm (7.7 in)
1906	168.7 mm (6.6 in)
1907	186.5 mm (7.3 in)
1908	286.0 mm (11.3 in)
1909	212.2 mm (8.4 in)
1910	464.8 mm (18.3 in)
1911	262.6 mm (10.3 in)
1912	347.7 mm (13.7 in)
1913	256.0 mm (10.1 in)
1914	341.6 mm (13.4 in)
1915	282.1 mm (11.1 in)
1916	302.2 mm (11.9 in)
1917	253.1 mm (10.0 in)
1918	548.7 mm (21.6 in)
1919	253.5 mm (10.0 in)
1920	549.4 mm (21.6 in)
1921	447.4 mm (17.6 in)
1922	558.3 mm (22.0 in)
1923	376.7 mm (14.8 in)
1924	225.8 mm (8.9 in)
1925	149.3 mm (5.9 in)
1926	162.1 mm (6.4 in)
1927	256.4 mm (10.1 in)
1928	169.9 mm (6.7 in)
1929	288.8 mm (11.4 in)
1930	370.1 mm (14.6 in)
1931	212.7 mm (8.4 in)
1932	372.9 mm (14.7 in)
1933	202.2 mm (8.0 in)
1934	163.1 mm (6.4 in)
1935	367.0 mm (14.4 in)
1936	252.5 mm (9.9 in)
1937	300.3 mm (11.8 in)
1938	291.3 mm (11.5 in)
1939	245.7 mm (9.7 in)
1940	192.4 mm (7.6 in)
1941	499.9 mm (19.7 in)
1942	463.1 mm (18.2 in)
1943	294.2 mm (11.6 in)
1944	235.2 mm (9.3 in)
1945	191.2 mm (7.5 in)
1946	377.8 mm (14.9 in)
1947	222.5 mm (8.8 in)
1948	354.9 mm (14.0 in)
1949	141.2 mm (5.6 in)
1950	284.3 mm (11.2 in)
1951	197.2 mm (7.8 in)
1952	145.4 mm (5.7 in)
1953	145.0 mm (5.7 in)
1954	179.3 mm (7.1 in)
1955	188.0 mm (7.4 in)
1956	357.5 mm (14.1 in)
1957	514.2 mm (20.2 in)
1958	218.2 mm (8.6 in)
1959	281.7 mm (11.1 in)
1960	319.8 mm (12.6 in)
1961	271.2 mm (10.7 in)
1962	219.1 mm (8.6 in)
1963	312.7 mm (12.3 in)
1964	273.6 mm (10.8 in)
1965	664.5 mm (26.2 in)
1966	293.7 mm (11.6 in)
1967	318.7 mm (12.5 in)
1968	464.7 mm (18.3 in)
1969	558.2 mm (22.0 in)
1970	267.4 mm (10.5 in)
1971	392.2 mm (15.4 in)
1972	225.8 mm (8.9 in)
1973	141.7 mm (5.6 in)
1974	292.5 mm (11.5 in)
1975	233.7 mm (9.2 in)
1976	7.8 mm (0.31 in)
1977	94.5 mm (3.7 in)
1978	135.1 mm (5.3 in)
1979	285.8 mm (11.3 in)
1980	153.2 mm (6.0 in)
1981	60.6 mm (2.4 in)
1982	231.1 mm (9.1 in)
1983	129.3 mm (5.1 in)
1984	43.0 mm (1.7 in)
1985	89.6 mm (3.5 in)
1986	157.8 mm (6.2 in)
1987	94.9 mm (3.7 in)
1988	267.0 mm (10.5 in)
1989	479.6 mm (18.9 in)
1990	199.9 mm (7.9 in)
1991	9.4 mm (0.37 in)
1992	143.0 mm (5.6 in)
1993	43.9 mm (1.7 in)
1994	188.2 mm (7.4 in)
1995	23.6 mm (0.9 in)
1996	72.9 mm (2.9 in)
1997	50.7 mm (2.0 in)
1998	219.0 mm (8.6 in)
1999	228.1 mm (9.0 in)
2000	199.3 mm (7.8 in)
2001	181.1 mm (7.1 in)
2002	190.5 mm (7.5 in)
2003	195.6 mm (7.7 in)
2004	352.3 mm (13.9 in)
2005	389.7 mm (15.3 in)
2006	335.0 mm (13.2 in)
2007	124.0 mm (4.9 in)
2008	52.6 mm (2.1 in)
2009	318.7 mm (12.5 in)
2010	134.4 mm (5.3 in)
2011	202.0 mm (8.0 in)
2012	n/a
2013	330.2 mm (13.0 in)
2014	45.7 mm (1.8 in)
2015	199.9 mm (7.9 in)
2016	191.5 mm (7.5 in)
2017	104.9 mm (4.1 in)
2018	25.6 mm (1.0 in)
2019	n/a
2020	n/a
2021	n/a
2022	167.6 mm (6.6 in)
2023	111.0 mm (4.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Kailua 446, 1905 to 2023. The record is 22 days in 1945, marked on the chart; the median year is 9 days.

Longest dry spell (CDD) at Kailua 446 by year
Year	Longest dry spell (CDD)
1905	18 days
1906	13 days
1907	9 days
1908	6 days
1909	12 days
1910	9 days
1911	8 days
1912	14 days
1913	12 days
1914	8 days
1915	8 days
1916	5 days
1917	14 days
1918	7 days
1919	12 days
1920	17 days
1921	13 days
1922	11 days
1923	8 days
1924	16 days
1925	13 days
1926	9 days
1927	7 days
1928	8 days
1929	7 days
1930	10 days
1931	12 days
1932	6 days
1933	8 days
1934	9 days
1935	9 days
1936	9 days
1937	6 days
1938	7 days
1939	7 days
1940	14 days
1941	12 days
1942	10 days
1943	12 days
1944	12 days
1945	22 days
1946	7 days
1947	8 days
1948	6 days
1949	13 days
1950	9 days
1951	13 days
1952	6 days
1953	9 days
1954	10 days
1955	10 days
1956	9 days
1957	9 days
1958	8 days
1959	6 days
1960	12 days
1961	12 days
1962	14 days
1963	8 days
1964	6 days
1965	13 days
1966	6 days
1967	7 days
1968	9 days
1969	9 days
1970	11 days
1971	11 days
1972	9 days
1973	9 days
1974	14 days
1975	6 days
1976	8 days
1977	10 days
1978	9 days
1979	7 days
1980	7 days
1981	7 days
1982	7 days
1983	11 days
1984	11 days
1985	9 days
1986	10 days
1987	7 days
1988	5 days
1989	7 days
1990	8 days
1991	10 days
1992	11 days
1993	7 days
1994	11 days
1995	11 days
1996	10 days
1997	9 days
1998	9 days
1999	9 days
2000	19 days
2001	10 days
2002	12 days
2003	18 days
2004	18 days
2005	11 days
2006	10 days
2007	9 days
2008	9 days
2009	6 days
2010	7 days
2011	4 days
2012	3 days
2013	4 days
2014	3 days
2015	4 days
2016	3 days
2017	4 days
2018	3 days
2019	4 days
2020	1 day
2021	1 day
2022	4 days
2023	5 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

72 years, 1905 to 2006

A day with at least 130.1 mm (5.1 in) of rain is expected about once in 2 years. A day with at least 356.3 mm (14.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Kailua 446: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	130.1 mm (5.1 in)
5 years	180.2 mm (7.1 in)
10 years	217.2 mm (8.6 in)
25 years	268.8 mm (10.6 in)
50 years	310.9 mm (12.2 in)
100 years	356.3 mm (14.0 in)	Longer than the 72 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 72 years of values from 1905 to 2006.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 386.1 mm (15.2 in) in 1965; 304.8 mm (12.0 in) in 1922; 271.8 mm (10.7 in) in 1918.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Kailua 446 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kailua 446 threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).