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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

Waikolu 540 Weather Records (USC00519404)

Record envelope, standing records and threshold days for Waikolu 540 (USC00519404), Hawaii, United States, with 43 years of record.

Key Facts for Waikolu 540

  • Waikolu 540 (USC00519404) is a weather station in Hawaii, United States at 21.13 latitude and -156.92 longitude, 1,082 m (3,550 ft) above sea level.
  • The station reports from 1965 to 2007, 43 years of record.
  • 0 records set at Waikolu 540 still stand.
  • Records are tracked for snow, snwd: an element needs 30 years of data to be eligible.

About the Station

  • Location: Hawaii, United States, 21.13 latitude, -156.92 longitude.
  • Elevation: 1,082 m (3,550 ft).
  • Period of record: 1965 to 2007, 43 years.
  • Eligible elements: snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Waikolu 540, with 2026 drawn through them The band shows the record high and record low for each calendar day at Waikolu 540. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Waikolu 540. 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 Waikolu 540, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Waikolu 540 by the year they were set 0 records at Waikolu 540 still stand. 00000000000
0 records at Waikolu 540 still stand.
Standing records at Waikolu 540 by the year they were set
Year setStanding records

Wettest Day of Each Month

Feb: 377.2 mm (14.9 in)
Record daily precipitation for each month at Waikolu 540 The wettest day on record for each calendar month at Waikolu 540. The most was 377.2 mm (14.9 in) on 28 February 1986. 0100200300400 Jan: 304.8 mm (12.0 in), 31 January 1990 Jan Feb: 377.2 mm (14.9 in), 28 February 1986 Feb Mar: 231.1 mm (9.1 in), 2 March 1982 Mar Apr: 218.4 mm (8.6 in), 27 April 1983 Apr May: 171.5 mm (6.8 in), 1 May 1984 May Jun: 177.8 mm (7.0 in), 30 June 1986 Jun Jul: 152.4 mm (6.0 in), 31 July 1987 Jul Aug: 130.8 mm (5.1 in), 10 August 1982 Aug Sep: 152.4 mm (6.0 in), 30 September 1987 Sep Oct: 317.5 mm (12.5 in), 31 October 1986 Oct Nov: 256.0 mm (10.1 in), 30 November 1988 Nov Dec: 313.2 mm (12.3 in), 31 December 1986 Dec
The wettest day on record for each calendar month at Waikolu 540. The most was 377.2 mm (14.9 in) on 28 February 1986.
Record daily precipitation for each month at Waikolu 540
MonthRecord daily precipitation (mm)Date
Jan304.8 mm (12.0 in)31 January 1990
Feb377.2 mm (14.9 in)28 February 1986
Mar231.1 mm (9.1 in)2 March 1982
Apr218.4 mm (8.6 in)27 April 1983
May171.5 mm (6.8 in)1 May 1984
Jun177.8 mm (7.0 in)30 June 1986
Jul152.4 mm (6.0 in)31 July 1987
Aug130.8 mm (5.1 in)10 August 1982
Sep152.4 mm (6.0 in)30 September 1987
Oct317.5 mm (12.5 in)31 October 1986
Nov256.0 mm (10.1 in)30 November 1988
Dec313.2 mm (12.3 in)31 December 1986

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1965 to 2007
Yearly extremes at Waikolu 540: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)377.2 mm (14.9 in)1986152.4 mm (6.0 in)25
Wettest five days (Rx5day)430.8 mm (17.0 in)1978125.4 mm (4.9 in)18
Longest dry spell (CDD)141 days198420 days20

Wettest day (Rx1day)

Wettest day (Rx1day) at Waikolu 540 by year The wettest day of the year at Waikolu 540, 1965 to 2007. The record is 377.2 mm (14.9 in) in 1986, marked on the chart; the median year is 152.4 mm (6.0 in). 01002003004001970198019902000Record: 377.2 mm (14.9 in) in 1986
The wettest day of the year at Waikolu 540, 1965 to 2007. The record is 377.2 mm (14.9 in) in 1986, marked on the chart; the median year is 152.4 mm (6.0 in).
Wettest day (Rx1day) at Waikolu 540 by year
YearWettest day (Rx1day)
1965n/a
19660.8 mm (0.03 in)
1967178.3 mm (7.0 in)
1968242.6 mm (9.6 in)
1969241.3 mm (9.5 in)
1970n/a
197138.6 mm (1.5 in)
1972126.5 mm (5.0 in)
1973124.2 mm (4.9 in)
1974145.3 mm (5.7 in)
197550.0 mm (2.0 in)
197655.6 mm (2.2 in)
197752.1 mm (2.1 in)
1978227.6 mm (9.0 in)
197949.8 mm (2.0 in)
198053.8 mm (2.1 in)
198158.2 mm (2.3 in)
1982231.1 mm (9.1 in)
1983218.4 mm (8.6 in)
1984283.2 mm (11.1 in)
1985254.0 mm (10.0 in)
1986377.2 mm (14.9 in)
1987152.4 mm (6.0 in)
1988256.0 mm (10.1 in)
1989171.5 mm (6.8 in)
1990304.8 mm (12.0 in)
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
20050.0 mm (0.00 in)
2006n/a
2007n/a

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Waikolu 540 by year The wettest five days of the year at Waikolu 540, 1965 to 2007. The record is 430.8 mm (17.0 in) in 1978, marked on the chart; the median year is 125.4 mm (4.9 in). 02004006001970198019902000Record: 430.8 mm (17.0 in) in 1978
The wettest five days of the year at Waikolu 540, 1965 to 2007. The record is 430.8 mm (17.0 in) in 1978, marked on the chart; the median year is 125.4 mm (4.9 in).
Wettest five days (Rx5day) at Waikolu 540 by year
YearWettest five days (Rx5day)
1965n/a
1966n/a
1967178.3 mm (7.0 in)
1968242.6 mm (9.6 in)
1969241.3 mm (9.5 in)
1970n/a
197138.6 mm (1.5 in)
1972126.5 mm (5.0 in)
1973124.2 mm (4.9 in)
1974145.3 mm (5.7 in)
197550.0 mm (2.0 in)
197655.6 mm (2.2 in)
19770.0 mm (0.00 in)
1978430.8 mm (17.0 in)
197949.8 mm (2.0 in)
1980n/a
19810.0 mm (0.00 in)
1982130.8 mm (5.1 in)
1983218.4 mm (8.6 in)
1984283.2 mm (11.1 in)
19850.0 mm (0.00 in)
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
20050.0 mm (0.00 in)
2006n/a
2007n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Waikolu 540 by year The longest dry spell of the year at Waikolu 540, 1965 to 2007. The record is 141 days in 1984, marked on the chart; the median year is 20 days. 0501001501970198019902000Record: 141 days in 1984
The longest dry spell of the year at Waikolu 540, 1965 to 2007. The record is 141 days in 1984, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Waikolu 540 by year
YearLongest dry spell (CDD)
1965n/a
19664 days
196713 days
196820 days
196913 days
1970n/a
197138 days
197219 days
19738 days
19748 days
19758 days
19766 days
197744 days
197833 days
19796 days
19801 day
198132 days
198251 days
198334 days
1984141 days
198531 days
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
200529 days
2006n/a
2007n/a

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 Waikolu 540 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Waikolu 540 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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