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

Haelaau 477 Weather Records (USC00510790)

Record envelope, standing records and threshold days for Haelaau 477 (USC00510790), Hawaii, United States, with 63 years of record.

Key Facts for Haelaau 477

  • Haelaau 477 (USC00510790) is a weather station in Hawaii, United States at 20.94 latitude and -156.62 longitude, 908 m (2,980 ft) above sea level.
  • The station reports from 1949 to 2011, 63 years of record.
  • 0 records set at Haelaau 477 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, 20.94 latitude, -156.62 longitude.
  • Elevation: 908 m (2,980 ft).
  • Period of record: 1949 to 2011, 63 years.
  • Eligible elements: snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Haelaau 477, with 2026 drawn through them The band shows the record high and record low for each calendar day at Haelaau 477. 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 Haelaau 477. 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 Haelaau 477, 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 Haelaau 477 by the year they were set 0 records at Haelaau 477 still stand. 00000000000
0 records at Haelaau 477 still stand.
Standing records at Haelaau 477 by the year they were set
Year setStanding records

Wettest Day of Each Month

Apr: 787.4 mm (31.0 in)
Record daily precipitation for each month at Haelaau 477 The wettest day on record for each calendar month at Haelaau 477. The most was 787.4 mm (31.0 in) on 30 April 1950. 0200400600800 Jan: 431.8 mm (17.0 in), 31 January 1988 Jan Feb: 622.3 mm (24.5 in), 28 February 1955 Feb Mar: 400.1 mm (15.8 in), 11 March 1984 Mar Apr: 787.4 mm (31.0 in), 30 April 1950 Apr May: 431.8 mm (17.0 in), 31 May 1990 May Jun: 368.3 mm (14.5 in), 30 June 1987 Jun Jul: 266.7 mm (10.5 in), 31 July 1955 Jul Aug: 629.9 mm (24.8 in), 31 August 1982 Aug Sep: 292.1 mm (11.5 in), 5 September 1983 Sep Oct: 279.4 mm (11.0 in), 31 October 1982 Oct Nov: 387.4 mm (15.3 in), 3 November 1985 Nov Dec: 444.5 mm (17.5 in), 31 December 1982 Dec
The wettest day on record for each calendar month at Haelaau 477. The most was 787.4 mm (31.0 in) on 30 April 1950.
Record daily precipitation for each month at Haelaau 477
MonthRecord daily precipitation (mm)Date
Jan431.8 mm (17.0 in)31 January 1988
Feb622.3 mm (24.5 in)28 February 1955
Mar400.1 mm (15.8 in)11 March 1984
Apr787.4 mm (31.0 in)30 April 1950
May431.8 mm (17.0 in)31 May 1990
Jun368.3 mm (14.5 in)30 June 1987
Jul266.7 mm (10.5 in)31 July 1955
Aug629.9 mm (24.8 in)31 August 1982
Sep292.1 mm (11.5 in)5 September 1983
Oct279.4 mm (11.0 in)31 October 1982
Nov387.4 mm (15.3 in)3 November 1985
Dec444.5 mm (17.5 in)31 December 1982

Latest Records

0

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

Extremes by Year

1949 to 2011
Yearly extremes at Haelaau 477: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)787.4 mm (31.0 in)1950368.3 mm (14.5 in)19
Wettest five days (Rx5day)139.7 mm (5.5 in)198269.9 mm (2.8 in)2
Longest dry spell (CDD)30 days20096 days4

Wettest day (Rx1day)

Wettest day (Rx1day) at Haelaau 477 by year The wettest day of the year at Haelaau 477, 1949 to 2011. The record is 787.4 mm (31.0 in) in 1950, marked on the chart; the median year is 368.3 mm (14.5 in). 0200400600800196019802000Record: 787.4 mm (31.0 in) in 1950
The wettest day of the year at Haelaau 477, 1949 to 2011. The record is 787.4 mm (31.0 in) in 1950, marked on the chart; the median year is 368.3 mm (14.5 in).
Wettest day (Rx1day) at Haelaau 477 by year
YearWettest day (Rx1day)
1949n/a
1950787.4 mm (31.0 in)
1952431.8 mm (17.0 in)
1953190.5 mm (7.5 in)
1954285.8 mm (11.3 in)
1955622.3 mm (24.5 in)
1956241.3 mm (9.5 in)
19580.0 mm (0.00 in)
1959n/a
1971n/a
1977n/a
1978n/a
1979n/a
19800.0 mm (0.00 in)
1981n/a
1982629.9 mm (24.8 in)
1983419.1 mm (16.5 in)
1984400.1 mm (15.8 in)
1985444.5 mm (17.5 in)
1986190.5 mm (7.5 in)
1987368.3 mm (14.5 in)
1988431.8 mm (17.0 in)
1989203.2 mm (8.0 in)
1990431.8 mm (17.0 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
2005n/a
2006n/a
2007n/a
2008n/a
20090.0 mm (0.00 in)
2010n/a
2011279.4 mm (11.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Haelaau 477 by year The wettest five days of the year at Haelaau 477, 1949 to 2011. The record is 139.7 mm (5.5 in) in 1982, marked on the chart; the median year is 69.9 mm (2.8 in). 050100150196019802000Record: 139.7 mm (5.5 in) in 1982
The wettest five days of the year at Haelaau 477, 1949 to 2011. The record is 139.7 mm (5.5 in) in 1982, marked on the chart; the median year is 69.9 mm (2.8 in).
Wettest five days (Rx5day) at Haelaau 477 by year
YearWettest five days (Rx5day)
1949n/a
1950n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1958n/a
1959n/a
1971n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982139.7 mm (5.5 in)
1983n/a
1984n/a
1985n/a
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
2005n/a
2006n/a
2007n/a
2008n/a
20090.0 mm (0.00 in)
2010n/a
2011n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Haelaau 477 by year The longest dry spell of the year at Haelaau 477, 1949 to 2011. The record is 30 days in 2009, marked on the chart; the median year is 6 days. 0102030196019802000Record: 30 days in 2009
The longest dry spell of the year at Haelaau 477, 1949 to 2011. The record is 30 days in 2009, marked on the chart; the median year is 6 days.
Longest dry spell (CDD) at Haelaau 477 by year
YearLongest dry spell (CDD)
1949n/a
1950n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
19581 day
1959n/a
1971n/a
1977n/a
1978n/a
1979n/a
19804 days
1981n/a
19827 days
1983n/a
1984n/a
1985n/a
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
2005n/a
2006n/a
2007n/a
2008n/a
200930 days
2010n/a
2011n/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 Haelaau 477 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Haelaau 477 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 . Last revised (2025-12-31).