Pahala Mauka 21.3 Weather Records (USC00517437)

Record envelope, standing records and threshold days for Pahala Mauka 21.3 (USC00517437), Hawaii, United States, with 37 years of record.

Key Facts for Pahala Mauka 21.3

Pahala Mauka 21.3 (USC00517437) is a weather station in Hawaii, United States at 19.20 latitude and -155.49 longitude, 332 m (1,090 ft) above sea level.
The station reports from 1985 to 2021, 37 years of record.
1,448 records set at Pahala Mauka 21.3 still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Pahala Mauka 21.3 set a daily record precipitation of 19.3 mm (0.8 in) on 12 October 2021.

About the Station

Location: Hawaii, United States, 19.20 latitude, -155.49 longitude.
Elevation: 332 m (1,090 ft).
Period of record: 1985 to 2021, 37 years.
Eligible elements: prcp.

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 Pahala Mauka 21.3. 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 Pahala Mauka 21.3, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	30.6 C (87.1 F)	11.1 C (52.0 F)	n/a	n/a
Feb	31.7 C (89.1 F)	10.0 C (50.0 F)	n/a	n/a
Mar	30.6 C (87.1 F)	10.6 C (51.1 F)	n/a	n/a
Apr	30.6 C (87.1 F)	12.8 C (55.0 F)	n/a	n/a
May	32.2 C (90.0 F)	13.9 C (57.0 F)	n/a	n/a
Jun	34.4 C (93.9 F)	13.9 C (57.0 F)	n/a	n/a
Jul	33.9 C (93.0 F)	13.9 C (57.0 F)	n/a	n/a
Aug	32.2 C (90.0 F)	14.4 C (57.9 F)	n/a	n/a
Sep	32.8 C (91.0 F)	14.4 C (57.9 F)	n/a	n/a
Oct	32.8 C (91.0 F)	13.9 C (57.0 F)	n/a	n/a
Nov	31.7 C (89.1 F)	12.2 C (54.0 F)	n/a	n/a
Dec	30.0 C (86.0 F)	10.6 C (51.1 F)	n/a	n/a

Which Years Hold Standing Records

1,448 standing records

1,448 records at Pahala Mauka 21.3 still stand. 2015 holds the most, with 153.

Wettest Day of Each Month

Nov: 421.6 mm (16.6 in)

The wettest day on record for each calendar month at Pahala Mauka 21.3. The most was 421.6 mm (16.6 in) on 2 November 2000.

Record daily precipitation for each month at Pahala Mauka 21.3
Month	Record daily precipitation (mm)	Date
Jan	328.9 mm (12.9 in)	20 January 1990
Feb	190.0 mm (7.5 in)	13 February 2001
Mar	231.1 mm (9.1 in)	3 March 1996
Apr	192.5 mm (7.6 in)	11 April 1986
May	84.6 mm (3.3 in)	29 May 2013
Jun	38.4 mm (1.5 in)	27 June 2000
Jul	223.8 mm (8.8 in)	30 July 1997
Aug	105.2 mm (4.1 in)	24 August 1994
Sep	165.6 mm (6.5 in)	19 September 1994
Oct	180.3 mm (7.1 in)	30 October 2018
Nov	421.6 mm (16.6 in)	2 November 2000
Dec	224.8 mm (8.9 in)	13 December 1987

Period of Record Coverage

2010 to 2021

12 years of record at Pahala Mauka 21.3, 2010 to 2021. 12 years have data for under 90 percent of days and are left out of rankings: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and others.

Days with data per year at Pahala Mauka 21.3
Year	Days with data	Share of year	Complete
2010	104	28%	No
2011	249	68%	No
2012	247	67%	No
2013	250	68%	No
2014	240	66%	No
2015	251	69%	No
2016	250	68%	No
2017	241	66%	No
2018	239	65%	No
2019	227	62%	No
2020	219	60%	No
2021	142	39%	No

Latest Records

Latest records at Pahala Mauka 21.3
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 October 2021	Pahala Mauka 21.3, US	daily rain	19.3 mm (0.8 in)	8.1 mm (0.32 in)	16 years	11 of 100 (Routine)
8 July 2021	Pahala Mauka 21.3, US	daily rain	8.6 mm (0.34 in)	3.3 mm (0.13 in)	7 years	6 of 100 (Routine)
24 September 2020	Pahala Mauka 21.3, US	daily rain	50.8 mm (2.0 in)	20.3 mm (0.8 in)	35 years	23 of 100 (Routine)
25 June 2020	Pahala Mauka 21.3, US	daily rain	18.5 mm (0.7 in)	12.9 mm (0.5 in)	24 years	20 of 100 (Routine)
19 May 2020	Pahala Mauka 21.3, US	daily rain	10.7 mm (0.4 in)	4.3 mm (0.17 in)	11 years	10 of 100 (Routine)
7 February 2020	Pahala Mauka 21.3, US	daily rain	16.3 mm (0.6 in)	4.4 mm (0.17 in)	30 years	13 of 100 (Routine)
25 September 2019	Pahala Mauka 21.3, US	daily rain	9.4 mm (0.37 in)	0.5 mm (0.02 in)	33 years	13 of 100 (Routine)
2 August 2019	Pahala Mauka 21.3, US	daily rain	66.0 mm (2.6 in)	58.4 mm (2.3 in)	18 years	44 of 100 (Notable)
10 July 2019	Pahala Mauka 21.3, US	daily rain	9.1 mm (0.36 in)	7.8 mm (0.31 in)	33 years	16 of 100 (Routine)
9 July 2019	Pahala Mauka 21.3, US	daily rain	42.9 mm (1.7 in)	36.3 mm (1.4 in)	10 years	21 of 100 (Routine)
2 July 2019	Pahala Mauka 21.3, US	daily rain	16.5 mm (0.6 in)	0.8 mm (0.03 in)	26 years	11 of 100 (Routine)
26 June 2019	Pahala Mauka 21.3, US	daily rain	8.4 mm (0.33 in)	3.6 mm (0.14 in)	29 years	16 of 100 (Routine)
15 May 2019	Pahala Mauka 21.3, US	daily rain	16.0 mm (0.6 in)	1.3 mm (0.05 in)	26 years	12 of 100 (Routine)
20 February 2019	Pahala Mauka 21.3, US	daily rain	87.6 mm (3.4 in)	62.2 mm (2.4 in)	20 years	36 of 100 (Notable)
14 February 2019	Pahala Mauka 21.3, US	daily rain	42.9 mm (1.7 in)	35.5 mm (1.4 in)	17 years	23 of 100 (Routine)
30 October 2018	Pahala Mauka 21.3, US	monthly rain	180.3 mm (7.1 in)	49.2 mm (1.9 in)	29 years	47 of 100 (Notable)
9 October 2018	Pahala Mauka 21.3, US	daily rain	32.0 mm (1.3 in)	7.1 mm (0.28 in)	27 years	14 of 100 (Routine)
14 September 2018	Pahala Mauka 21.3, US	daily rain	40.6 mm (1.6 in)	32.5 mm (1.3 in)	17 years	24 of 100 (Routine)
23 August 2018	Pahala Mauka 21.3, US	daily rain	81.3 mm (3.2 in)	51.6 mm (2.0 in)	1 year	38 of 100 (Notable)
10 August 2018	Pahala Mauka 21.3, US	daily rain	20.3 mm (0.8 in)	10.4 mm (0.4 in)	23 years	16 of 100 (Routine)

Extremes by Year

1985 to 2021

Yearly extremes at Pahala Mauka 21.3: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	2012	31.7 C (89.0 F)	12
Coldest night (TNn)	10.0 C (50.0 F)	2019	11.6 C (53.0 F)	12
Wettest day (Rx1day)	421.6 mm (16.6 in)	2000	116.8 mm (4.6 in)	37
Wettest five days (Rx5day)	722.8 mm (28.5 in)	2000	177.0 mm (7.0 in)	30
Longest dry spell (CDD)	45 days	2002	17 days	37

Hottest day (TXx)

The hottest day of the year at Pahala Mauka 21.3, 1985 to 2021. The record is 34.4 C (93.9 F) in 2012, marked on the chart; the median year is 31.7 C (89.0 F).

Hottest day (TXx) at Pahala Mauka 21.3 by year
Year	Hottest day (TXx)
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	30.6 C (87.1 F)
2011	30.6 C (87.1 F)
2012	34.4 C (93.9 F)
2013	31.1 C (88.0 F)
2014	31.1 C (88.0 F)
2015	32.2 C (90.0 F)
2016	32.8 C (91.0 F)
2017	32.8 C (91.0 F)
2018	33.9 C (93.0 F)
2019	32.2 C (90.0 F)
2020	29.4 C (84.9 F)
2021	29.4 C (84.9 F)

Coldest night (TNn)

The coldest night of the year at Pahala Mauka 21.3, 1985 to 2021. The record is 10.0 C (50.0 F) in 2019, marked on the chart; the median year is 11.6 C (53.0 F).

Coldest night (TNn) at Pahala Mauka 21.3 by year
Year	Coldest night (TNn)
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	12.8 C (55.0 F)
2011	13.3 C (55.9 F)
2012	12.2 C (54.0 F)
2013	10.6 C (51.1 F)
2014	12.2 C (54.0 F)
2015	11.1 C (52.0 F)
2016	12.8 C (55.0 F)
2017	10.6 C (51.1 F)
2018	11.1 C (52.0 F)
2019	10.0 C (50.0 F)
2020	13.9 C (57.0 F)
2021	10.0 C (50.0 F)

Wettest day (Rx1day)

The wettest day of the year at Pahala Mauka 21.3, 1985 to 2021. The record is 421.6 mm (16.6 in) in 2000, marked on the chart; the median year is 116.8 mm (4.6 in).

Wettest day (Rx1day) at Pahala Mauka 21.3 by year
Year	Wettest day (Rx1day)
1985	126.5 mm (5.0 in)
1986	192.5 mm (7.6 in)
1987	224.8 mm (8.9 in)
1988	99.3 mm (3.9 in)
1989	188.0 mm (7.4 in)
1990	328.9 mm (12.9 in)
1991	131.1 mm (5.2 in)
1992	109.2 mm (4.3 in)
1993	131.1 mm (5.2 in)
1994	165.6 mm (6.5 in)
1995	42.9 mm (1.7 in)
1996	235.7 mm (9.3 in)
1997	223.8 mm (8.8 in)
1998	17.5 mm (0.7 in)
1999	142.2 mm (5.6 in)
2000	421.6 mm (16.6 in)
2001	310.6 mm (12.2 in)
2002	319.3 mm (12.6 in)
2003	75.7 mm (3.0 in)
2004	116.8 mm (4.6 in)
2005	154.4 mm (6.1 in)
2006	154.4 mm (6.1 in)
2007	144.5 mm (5.7 in)
2008	69.3 mm (2.7 in)
2009	53.3 mm (2.1 in)
2010	54.6 mm (2.1 in)
2011	39.1 mm (1.5 in)
2012	42.9 mm (1.7 in)
2013	84.6 mm (3.3 in)
2014	57.7 mm (2.3 in)
2015	70.6 mm (2.8 in)
2016	61.5 mm (2.4 in)
2017	80.8 mm (3.2 in)
2018	180.3 mm (7.1 in)
2019	87.6 mm (3.4 in)
2020	50.8 mm (2.0 in)
2021	19.3 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Pahala Mauka 21.3, 1985 to 2021. The record is 722.8 mm (28.5 in) in 2000, marked on the chart; the median year is 177.0 mm (7.0 in).

Wettest five days (Rx5day) at Pahala Mauka 21.3 by year
Year	Wettest five days (Rx5day)
1985	200.7 mm (7.9 in)
1986	294.6 mm (11.6 in)
1987	403.4 mm (15.9 in)
1988	101.6 mm (4.0 in)
1989	338.6 mm (13.3 in)
1990	470.1 mm (18.5 in)
1991	153.2 mm (6.0 in)
1992	135.9 mm (5.4 in)
1993	205.0 mm (8.1 in)
1994	306.1 mm (12.1 in)
1995	79.3 mm (3.1 in)
1996	330.0 mm (13.0 in)
1997	257.9 mm (10.2 in)
1998	29.2 mm (1.1 in)
1999	274.1 mm (10.8 in)
2000	722.8 mm (28.5 in)
2001	531.3 mm (20.9 in)
2002	579.3 mm (22.8 in)
2003	56.1 mm (2.2 in)
2004	229.4 mm (9.0 in)
2005	45.8 mm (1.8 in)
2006	221.2 mm (8.7 in)
2007	94.4 mm (3.7 in)
2008	70.8 mm (2.8 in)
2009	53.6 mm (2.1 in)
2010	17.8 mm (0.7 in)
2011	3.0 mm (0.12 in)
2012	1.3 mm (0.05 in)
2013	n/a
2014	n/a
2015	0.5 mm (0.02 in)
2016	n/a
2017	n/a
2018	n/a
2019	21.5 mm (0.8 in)
2020	n/a
2021	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Pahala Mauka 21.3, 1985 to 2021. The record is 45 days in 2002, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Pahala Mauka 21.3 by year
Year	Longest dry spell (CDD)
1985	15 days
1986	20 days
1987	22 days
1988	18 days
1989	16 days
1990	20 days
1991	15 days
1992	20 days
1993	25 days
1994	21 days
1995	25 days
1996	16 days
1997	19 days
1998	44 days
1999	27 days
2000	23 days
2001	27 days
2002	45 days
2003	18 days
2004	16 days
2005	15 days
2006	24 days
2007	17 days
2008	14 days
2009	19 days
2010	18 days
2011	9 days
2012	4 days
2013	4 days
2014	4 days
2015	5 days
2016	4 days
2017	4 days
2018	4 days
2019	4 days
2020	4 days
2021	4 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.

Download the Data

Data for Pahala Mauka 21.3 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Pahala Mauka 21.3 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).