Waimea 947 Weather Records (USC00519629)

Record envelope, standing records and threshold days for Waimea 947 (USC00519629), Hawaii, United States, with 69 years of record.

Key Facts for Waimea 947

Waimea 947 (USC00519629) is a weather station in Hawaii, United States at 21.96 latitude and -159.68 longitude, 6 m (20 ft) above sea level.
The station reports from 1949 to 2017, 69 years of record.
1,464 records set at Waimea 947 still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Waimea 947 tied a daily record high minimum temperature of 24.4 C (75.9 F) on 21 August 2017.

About the Station

Location: Hawaii, United States, 21.96 latitude, -159.68 longitude.
Elevation: 6 m (20 ft).
Period of record: 1949 to 2017, 69 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 Waimea 947. 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 Waimea 947, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.1 C (88.0 F)	6.1 C (43.0 F)	n/a	n/a
Feb	30.6 C (87.1 F)	6.1 C (43.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	11.1 C (52.0 F)	n/a	n/a
Apr	32.8 C (91.0 F)	9.4 C (48.9 F)	n/a	n/a
May	33.9 C (93.0 F)	11.7 C (53.1 F)	n/a	n/a
Jun	35.0 C (95.0 F)	13.9 C (57.0 F)	n/a	n/a
Jul	34.4 C (93.9 F)	13.3 C (55.9 F)	n/a	n/a
Aug	34.4 C (93.9 F)	15.0 C (59.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	14.4 C (57.9 F)	n/a	n/a
Oct	33.3 C (91.9 F)	11.1 C (52.0 F)	n/a	n/a
Nov	36.1 C (97.0 F)	11.7 C (53.1 F)	n/a	n/a
Dec	31.1 C (88.0 F)	11.7 C (53.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Waimea 947 still stand. 1981 holds the most, with 126.

Standing records at Waimea 947 by the year they were set
Year set	Standing records
1969	24
1978	39
1979	83
1980	76
1981	126
1982	43
1983	46
1984	51
1985	45
1986	66
1987	38
1988	31
1989	32
1990	37
1991	20
1992	20
1993	37
1994	22
1995	33
1996	55
1997	35
1998	27
1999	24
2000	9
2001	27
2002	48
2003	25
2004	23
2005	27
2006	25
2007	10
2008	18
2009	50
2010	59
2011	35
2013	13
2014	32
2015	8
2016	18
2017	27

All-Time Record Progression

1 new records

1 all-time records were set at Waimea 947 between 16 December 2008 and 16 December 2008. Each dot is a new record.

Wettest Day of Each Month

Dec: 281.2 mm (11.1 in)

The wettest day on record for each calendar month at Waimea 947. The most was 281.2 mm (11.1 in) on 16 December 2008.

Record daily precipitation for each month at Waimea 947
Month	Record daily precipitation (mm)	Date
Jan	204.2 mm (8.0 in)	22 January 1990
Feb	114.3 mm (4.5 in)	1 February 1975
Mar	161.8 mm (6.4 in)	2 March 2006
Apr	88.9 mm (3.5 in)	3 April 2001
May	88.9 mm (3.5 in)	13 May 2002
Jun	52.1 mm (2.1 in)	14 June 1996
Jul	68.6 mm (2.7 in)	23 July 1989
Aug	108.0 mm (4.3 in)	17 August 1950
Sep	64.8 mm (2.6 in)	22 September 1965
Oct	149.9 mm (5.9 in)	31 October 1982
Nov	125.2 mm (4.9 in)	20 November 1973
Dec	281.2 mm (11.1 in)	16 December 2008

Period of Record Coverage

1969 to 2017

40 years of record at Waimea 947, 1969 to 2017. 25 years have data for under 90 percent of days and are left out of rankings: 1969, 1978, 1982, 1984, 1986, 1987, 1988, 1989 and others.

Days with data per year at Waimea 947
Year	Days with data	Share of year	Complete
1969	31	8%	No
1978	153	42%	No
1979	341	93%	Yes
1980	343	94%	Yes
1981	355	97%	Yes
1982	267	73%	No
1983	365	100%	Yes
1984	305	83%	No
1985	365	100%	Yes
1986	286	78%	No
1987	244	67%	No
1988	212	58%	No
1989	222	61%	No
1990	244	67%	No
1991	251	69%	No
1992	146	40%	No
1993	131	36%	No
1994	207	57%	No
1995	256	70%	No
1996	312	85%	No
1997	255	70%	No
1998	357	98%	Yes
1999	336	92%	Yes
2000	335	92%	Yes
2001	329	90%	Yes
2002	332	91%	Yes
2003	337	92%	Yes
2004	332	91%	Yes
2005	298	82%	No
2006	307	84%	No
2007	291	80%	No
2008	359	98%	Yes
2009	355	97%	Yes
2010	338	93%	Yes
2011	191	52%	No
2013	160	44%	No
2014	203	56%	No
2015	47	13%	No
2016	166	45%	No
2017	227	62%	No

Latest Records

Latest records at Waimea 947
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 2017	Waimea 947, US	daily high min (Tie)	24.4 C (75.9 F)	tie	20 years	2 of 100 (Routine)
20 August 2017	Waimea 947, US	daily high min	24.4 C (75.9 F)	1.1 C (2.0 F)	35 years	21 of 100 (Routine)
19 August 2017	Waimea 947, US	daily high min	24.4 C (75.9 F)	1.1 C (2.0 F)	35 years	21 of 100 (Routine)
18 August 2017	Waimea 947, US	daily high min	24.4 C (75.9 F)	1.1 C (2.0 F)	20 years	17 of 100 (Routine)
16 August 2017	Waimea 947, US	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	35 years	17 of 100 (Routine)
15 August 2017	Waimea 947, US	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	14 years	11 of 100 (Routine)
10 August 2017	Waimea 947, US	daily high min (Tie)	23.3 C (73.9 F)	tie	35 years	3 of 100 (Routine)
5 August 2017	Waimea 947, US	daily high min	23.3 C (73.9 F)	0.5 C (0.9 F)	16 years	12 of 100 (Routine)
4 August 2017	Waimea 947, US	daily high min	23.3 C (73.9 F)	0.5 C (0.9 F)	19 years	12 of 100 (Routine)
3 August 2017	Waimea 947, US	daily high min (Tie)	23.3 C (73.9 F)	tie	36 years	3 of 100 (Routine)
1 August 2017	Waimea 947, US	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	35 years	17 of 100 (Routine)
31 July 2017	Waimea 947, US	daily high min (Tie)	23.3 C (73.9 F)	tie	32 years	3 of 100 (Routine)
29 July 2017	Waimea 947, US	daily high min (Tie)	23.3 C (73.9 F)	tie	31 years	3 of 100 (Routine)
28 July 2017	Waimea 947, US	daily high min	23.3 C (73.9 F)	0.5 C (0.9 F)	36 years	18 of 100 (Routine)
27 July 2017	Waimea 947, US	daily high min (Tie)	23.3 C (73.9 F)	tie	35 years	3 of 100 (Routine)
23 July 2017	Waimea 947, US	daily high min (Tie)	23.9 C (75.0 F)	tie	31 years	3 of 100 (Routine)
22 July 2017	Waimea 947, US	daily high min (Tie)	23.9 C (75.0 F)	tie	31 years	3 of 100 (Routine)
21 July 2017	Waimea 947, US	daily high min	23.9 C (75.0 F)	1.7 C (3.1 F)	36 years	25 of 100 (Routine)
20 July 2017	Waimea 947, US	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	24 years	15 of 100 (Routine)
16 July 2017	Waimea 947, US	daily high min (Tie)	22.8 C (73.0 F)	tie	30 years	3 of 100 (Routine)

Extremes by Year

1949 to 2017

Yearly extremes at Waimea 947: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.1 C (97.0 F)	2005	32.8 C (91.0 F)	40
Coldest night (TNn)	6.1 C (43.0 F)	2010	12.8 C (55.0 F)	40
Wettest day (Rx1day)	281.2 mm (11.1 in)	2008	82.6 mm (3.3 in)	69
Wettest five days (Rx5day)	415.1 mm (16.3 in)	2008	114.2 mm (4.5 in)	68
Longest dry spell (CDD)	153 days	2010	53 days	69

Hottest day (TXx)

The hottest day of the year at Waimea 947, 1949 to 2017. The record is 36.1 C (97.0 F) in 2005, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Waimea 947 by year
Year	Hottest day (TXx)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	28.9 C (84.0 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	34.4 C (93.9 F)
1979	33.3 C (91.9 F)
1980	33.3 C (91.9 F)
1981	33.3 C (91.9 F)
1982	34.4 C (93.9 F)
1983	32.2 C (90.0 F)
1984	32.2 C (90.0 F)
1985	32.2 C (90.0 F)
1986	33.9 C (93.0 F)
1987	33.9 C (93.0 F)
1988	33.3 C (91.9 F)
1989	32.2 C (90.0 F)
1990	33.3 C (91.9 F)
1991	32.8 C (91.0 F)
1992	32.8 C (91.0 F)
1993	33.3 C (91.9 F)
1994	32.8 C (91.0 F)
1995	32.2 C (90.0 F)
1996	33.3 C (91.9 F)
1997	33.3 C (91.9 F)
1998	31.7 C (89.1 F)
1999	32.2 C (90.0 F)
2000	31.7 C (89.1 F)
2001	31.7 C (89.1 F)
2002	32.8 C (91.0 F)
2003	32.2 C (90.0 F)
2004	32.8 C (91.0 F)
2005	36.1 C (97.0 F)
2006	32.8 C (91.0 F)
2007	32.2 C (90.0 F)
2008	31.1 C (88.0 F)
2009	31.7 C (89.1 F)
2010	31.1 C (88.0 F)
2011	31.7 C (89.1 F)
2012	n/a
2013	33.3 C (91.9 F)
2014	31.7 C (89.1 F)
2015	28.3 C (82.9 F)
2016	33.3 C (91.9 F)
2017	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Waimea 947, 1949 to 2017. The record is 6.1 C (43.0 F) in 2010, marked on the chart; the median year is 12.8 C (55.0 F).

Coldest night (TNn) at Waimea 947 by year
Year	Coldest night (TNn)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	17.2 C (63.0 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	12.8 C (55.0 F)
1979	12.2 C (54.0 F)
1980	13.3 C (55.9 F)
1981	12.8 C (55.0 F)
1982	13.3 C (55.9 F)
1983	12.2 C (54.0 F)
1984	15.6 C (60.1 F)
1985	12.2 C (54.0 F)
1986	14.4 C (57.9 F)
1987	11.7 C (53.1 F)
1988	14.4 C (57.9 F)
1989	13.3 C (55.9 F)
1990	13.3 C (55.9 F)
1991	12.8 C (55.0 F)
1992	13.3 C (55.9 F)
1993	13.3 C (55.9 F)
1994	13.9 C (57.0 F)
1995	12.2 C (54.0 F)
1996	11.1 C (52.0 F)
1997	11.7 C (53.1 F)
1998	11.1 C (52.0 F)
1999	13.3 C (55.9 F)
2000	13.9 C (57.0 F)
2001	13.9 C (57.0 F)
2002	11.7 C (53.1 F)
2003	14.4 C (57.9 F)
2004	9.4 C (48.9 F)
2005	12.8 C (55.0 F)
2006	12.2 C (54.0 F)
2007	13.9 C (57.0 F)
2008	8.9 C (48.0 F)
2009	11.1 C (52.0 F)
2010	6.1 C (43.0 F)
2011	15.0 C (59.0 F)
2012	n/a
2013	14.4 C (57.9 F)
2014	11.7 C (53.1 F)
2015	9.4 C (48.9 F)
2016	15.0 C (59.0 F)
2017	11.7 C (53.1 F)

Wettest day (Rx1day)

The wettest day of the year at Waimea 947, 1949 to 2017. The record is 281.2 mm (11.1 in) in 2008, marked on the chart; the median year is 82.6 mm (3.3 in).

Wettest day (Rx1day) at Waimea 947 by year
Year	Wettest day (Rx1day)
1949	85.6 mm (3.4 in)
1950	108.0 mm (4.3 in)
1951	205.7 mm (8.1 in)
1952	100.3 mm (3.9 in)
1953	44.5 mm (1.8 in)
1954	76.2 mm (3.0 in)
1955	133.4 mm (5.3 in)
1956	57.2 mm (2.3 in)
1957	57.2 mm (2.3 in)
1958	67.6 mm (2.7 in)
1959	37.3 mm (1.5 in)
1960	50.3 mm (2.0 in)
1961	82.6 mm (3.3 in)
1962	110.5 mm (4.4 in)
1963	69.9 mm (2.8 in)
1964	85.9 mm (3.4 in)
1965	121.4 mm (4.8 in)
1966	62.7 mm (2.5 in)
1967	57.7 mm (2.3 in)
1968	136.7 mm (5.4 in)
1969	66.0 mm (2.6 in)
1970	52.1 mm (2.1 in)
1971	113.5 mm (4.5 in)
1972	88.9 mm (3.5 in)
1973	125.2 mm (4.9 in)
1974	89.9 mm (3.5 in)
1975	114.3 mm (4.5 in)
1976	99.1 mm (3.9 in)
1977	69.9 mm (2.8 in)
1978	69.1 mm (2.7 in)
1979	99.1 mm (3.9 in)
1980	57.2 mm (2.3 in)
1981	87.6 mm (3.4 in)
1982	149.9 mm (5.9 in)
1983	24.4 mm (1.0 in)
1984	59.7 mm (2.4 in)
1985	52.1 mm (2.1 in)
1986	63.5 mm (2.5 in)
1987	76.2 mm (3.0 in)
1988	107.2 mm (4.2 in)
1989	154.9 mm (6.1 in)
1990	204.2 mm (8.0 in)
1991	99.1 mm (3.9 in)
1992	98.0 mm (3.9 in)
1993	110.2 mm (4.3 in)
1994	112.8 mm (4.4 in)
1995	90.2 mm (3.6 in)
1996	55.9 mm (2.2 in)
1997	67.8 mm (2.7 in)
1998	37.1 mm (1.5 in)
1999	29.7 mm (1.2 in)
2000	35.6 mm (1.4 in)
2001	88.9 mm (3.5 in)
2002	88.9 mm (3.5 in)
2003	55.9 mm (2.2 in)
2004	88.9 mm (3.5 in)
2005	45.7 mm (1.8 in)
2006	161.8 mm (6.4 in)
2007	78.5 mm (3.1 in)
2008	281.2 mm (11.1 in)
2009	84.8 mm (3.3 in)
2010	109.5 mm (4.3 in)
2011	50.8 mm (2.0 in)
2012	2.0 mm (0.08 in)
2013	86.4 mm (3.4 in)
2014	43.2 mm (1.7 in)
2015	22.1 mm (0.9 in)
2016	22.9 mm (0.9 in)
2017	76.2 mm (3.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Waimea 947, 1949 to 2017. The record is 415.1 mm (16.3 in) in 2008, marked on the chart; the median year is 114.2 mm (4.5 in).

Wettest five days (Rx5day) at Waimea 947 by year
Year	Wettest five days (Rx5day)
1949	142.7 mm (5.6 in)
1950	196.9 mm (7.8 in)
1951	278.9 mm (11.0 in)
1952	110.5 mm (4.4 in)
1953	61.6 mm (2.4 in)
1954	117.2 mm (4.6 in)
1955	266.4 mm (10.5 in)
1956	92.8 mm (3.7 in)
1957	144.9 mm (5.7 in)
1958	71.7 mm (2.8 in)
1959	73.0 mm (2.9 in)
1960	111.5 mm (4.4 in)
1961	154.7 mm (6.1 in)
1962	131.5 mm (5.2 in)
1963	137.4 mm (5.4 in)
1964	136.8 mm (5.4 in)
1965	216.9 mm (8.5 in)
1966	135.0 mm (5.3 in)
1967	85.2 mm (3.4 in)
1968	189.3 mm (7.5 in)
1969	75.9 mm (3.0 in)
1970	72.9 mm (2.9 in)
1971	136.3 mm (5.4 in)
1972	177.1 mm (7.0 in)
1973	214.3 mm (8.4 in)
1974	92.7 mm (3.6 in)
1975	191.3 mm (7.5 in)
1976	134.1 mm (5.3 in)
1977	148.5 mm (5.8 in)
1978	149.6 mm (5.9 in)
1979	104.4 mm (4.1 in)
1980	94.2 mm (3.7 in)
1981	210.5 mm (8.3 in)
1982	353.9 mm (13.9 in)
1983	24.5 mm (1.0 in)
1984	105.4 mm (4.1 in)
1985	69.9 mm (2.8 in)
1986	87.7 mm (3.5 in)
1987	260.8 mm (10.3 in)
1988	175.8 mm (6.9 in)
1989	214.3 mm (8.4 in)
1990	352.0 mm (13.9 in)
1991	155.7 mm (6.1 in)
1992	111.5 mm (4.4 in)
1993	110.2 mm (4.3 in)
1994	112.8 mm (4.4 in)
1995	99.3 mm (3.9 in)
1996	83.9 mm (3.3 in)
1997	95.5 mm (3.8 in)
1998	37.9 mm (1.5 in)
1999	67.5 mm (2.7 in)
2000	35.8 mm (1.4 in)
2001	101.6 mm (4.0 in)
2002	137.1 mm (5.4 in)
2003	88.7 mm (3.5 in)
2004	165.1 mm (6.5 in)
2005	45.7 mm (1.8 in)
2006	245.4 mm (9.7 in)
2007	234.0 mm (9.2 in)
2008	415.1 mm (16.3 in)
2009	84.8 mm (3.3 in)
2010	115.6 mm (4.6 in)
2011	50.8 mm (2.0 in)
2012	n/a
2013	111.3 mm (4.4 in)
2014	62.7 mm (2.5 in)
2015	37.9 mm (1.5 in)
2016	24.2 mm (1.0 in)
2017	152.4 mm (6.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Waimea 947, 1949 to 2017. The record is 153 days in 2010, marked on the chart; the median year is 53 days.

Longest dry spell (CDD) at Waimea 947 by year
Year	Longest dry spell (CDD)
1949	30 days
1950	89 days
1951	36 days
1952	50 days
1953	70 days
1954	73 days
1955	66 days
1956	40 days
1957	72 days
1958	115 days
1959	54 days
1960	57 days
1961	34 days
1962	46 days
1963	45 days
1964	37 days
1965	28 days
1966	60 days
1967	43 days
1968	82 days
1969	68 days
1970	47 days
1971	39 days
1972	40 days
1973	89 days
1974	35 days
1975	87 days
1976	48 days
1977	39 days
1978	102 days
1979	36 days
1980	44 days
1981	65 days
1982	61 days
1983	74 days
1984	86 days
1985	52 days
1986	32 days
1987	40 days
1988	67 days
1989	42 days
1990	110 days
1991	51 days
1992	46 days
1993	118 days
1994	55 days
1995	51 days
1996	71 days
1997	39 days
1998	66 days
1999	68 days
2000	42 days
2001	33 days
2002	53 days
2003	39 days
2004	21 days
2005	86 days
2006	75 days
2007	61 days
2008	56 days
2009	93 days
2010	153 days
2011	88 days
2012	4 days
2013	26 days
2014	23 days
2015	31 days
2016	59 days
2017	67 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

55 years, 1950 to 2013

A day with at least 81.8 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 255.3 mm (10.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Waimea 947: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	81.8 mm (3.2 in)
5 years	121.4 mm (4.8 in)
10 years	150.1 mm (5.9 in)
25 years	189.6 mm (7.5 in)
50 years	221.4 mm (8.7 in)
100 years	255.3 mm (10.1 in)	Longer than the 55 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, 55 years of values from 1950 to 2013.

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: 281.2 mm (11.1 in) in 2008; 205.7 mm (8.1 in) in 1951; 204.2 mm (8.0 in) in 1990.

Download the Data

Data for Waimea 947 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Waimea 947 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).