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Waialua 847 Weather Records (USC00519195)

Record envelope, standing records and threshold days for Waialua 847 (USC00519195), Hawaii, United States, with 94 years of record.

Key Facts for Waialua 847

  • Waialua 847 (USC00519195) is a weather station in Hawaii, United States at 21.57 latitude and -158.12 longitude, 3 m (10 ft) above sea level.
  • The station reports from 1908 to 2001, 94 years of record.
  • 1,464 records set at Waialua 847 still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Waialua 847 tied a daily record high minimum temperature of 22.8 C (73.0 F) on 8 September 2000.

About the Station

  • Location: Hawaii, United States, 21.57 latitude, -158.12 longitude.
  • Elevation: 3 m (10 ft).
  • Period of record: 1908 to 2001, 94 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Waialua 847, with 2026 drawn through them The band shows the record high and record low for each calendar day at Waialua 847. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Waialua 847. 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 Waialua 847, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan32.8 C (91.0 F)9.4 C (48.9 F)n/an/a
Feb31.7 C (89.1 F)7.8 C (46.0 F)n/an/a
Mar32.2 C (90.0 F)10.6 C (51.1 F)n/an/a
Apr32.2 C (90.0 F)10.6 C (51.1 F)n/an/a
May33.3 C (91.9 F)10.0 C (50.0 F)n/an/a
Jun34.4 C (93.9 F)14.4 C (57.9 F)n/an/a
Jul34.4 C (93.9 F)14.4 C (57.9 F)n/an/a
Aug35.6 C (96.1 F)13.3 C (55.9 F)n/an/a
Sep36.1 C (97.0 F)14.4 C (57.9 F)n/an/a
Oct33.9 C (93.0 F)11.7 C (53.1 F)n/an/a
Nov32.2 C (90.0 F)13.3 C (55.9 F)n/an/a
Dec32.2 C (90.0 F)11.7 C (53.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Waialua 847 by the year they were set 1,464 records at Waialua 847 still stand. 1998 holds the most, with 63. 0204060801908: 301909: 271910: 241911: 261912: 151913: 141914: 321915: 391916: 381917: 91918: 591919: 191920: 101921: 201922: 71923: 121924: 461925: 221926: 221927: 621949: 41950: 161951: 231952: 201953: 81954: 281955: 361956: 131957: 151958: 211959: 121960: 111961: 181962: 251963: 161964: 111965: 181966: 231967: 121968: 221969: 121970: 101971: 101972: 261973: 161974: 131975: 61976: 111977: 161978: 191979: 231980: 201981: 281982: 211983: 431984: 301985: 271986: 591987: 341988: 31989: 41990: 91991: 41992: 161993: 81994: 21995: 111996: 171997: 101998: 631999: 52000: 3190819161924195319611969197719851993
1,464 records at Waialua 847 still stand. 1998 holds the most, with 63.
Standing records at Waialua 847 by the year they were set
Year setStanding records
190830
190927
191024
191126
191215
191314
191432
191539
191638
19179
191859
191919
192010
192120
19227
192312
192446
192522
192622
192762
19494
195016
195123
195220
19538
195428
195536
195613
195715
195821
195912
196011
196118
196225
196316
196411
196518
196623
196712
196822
196912
197010
197110
197226
197316
197413
19756
197611
197716
197819
197923
198020
198128
198221
198343
198430
198527
198659
198734
19883
19894
19909
19914
199216
19938
19942
199511
199617
199710
199863
19995
20003

All-Time Record Progression

4 new records
When Waialua 847 set new all-time records 4 all-time records were set at Waialua 847 between 24 January 1961 and 26 February 1983. Each dot is a new record. Record low minimum temperatureRecord low maximum temperatureRecord daily precipitation24 January 1961: Record low minimum temperature 9.4 C (48.9 F)17 February 1962: Record low maximum temperature 18.3 C (64.9 F)8 February 1976: Record daily precipitation 241.0 mm (9.5 in)26 February 1983: Record low minimum temperature 7.8 C (46.0 F)1965197019751980
4 all-time records were set at Waialua 847 between 24 January 1961 and 26 February 1983. Each dot is a new record.
When Waialua 847 set new all-time records
DateKindDetail
1961-01-24Record low minimum temperatureRecord low minimum temperature 9.4 C (48.9 F)
1962-02-17Record low maximum temperatureRecord low maximum temperature 18.3 C (64.9 F)
1976-02-08Record daily precipitationRecord daily precipitation 241.0 mm (9.5 in)
1983-02-26Record low minimum temperatureRecord low minimum temperature 7.8 C (46.0 F)

Wettest Day of Each Month

Feb: 241.0 mm (9.5 in)
Record daily precipitation for each month at Waialua 847 The wettest day on record for each calendar month at Waialua 847. The most was 241.0 mm (9.5 in) on 8 February 1976. 0100200300 Jan: 199.4 mm (7.9 in), 5 January 1988 Jan Feb: 241.0 mm (9.5 in), 8 February 1976 Feb Mar: 147.3 mm (5.8 in), 15 March 1908 Mar Apr: 160.0 mm (6.3 in), 20 April 1974 Apr May: 75.4 mm (3.0 in), 2 May 1961 May Jun: 78.5 mm (3.1 in), 3 June 1913 Jun Jul: 71.1 mm (2.8 in), 25 July 1966 Jul Aug: 68.6 mm (2.7 in), 7 August 1959 Aug Sep: 83.8 mm (3.3 in), 29 September 1986 Sep Oct: 177.3 mm (7.0 in), 20 October 1960 Oct Nov: 199.6 mm (7.9 in), 29 November 1954 Nov Dec: 175.3 mm (6.9 in), 28 December 1915 Dec
The wettest day on record for each calendar month at Waialua 847. The most was 241.0 mm (9.5 in) on 8 February 1976.
Record daily precipitation for each month at Waialua 847
MonthRecord daily precipitation (mm)Date
Jan199.4 mm (7.9 in)5 January 1988
Feb241.0 mm (9.5 in)8 February 1976
Mar147.3 mm (5.8 in)15 March 1908
Apr160.0 mm (6.3 in)20 April 1974
May75.4 mm (3.0 in)2 May 1961
Jun78.5 mm (3.1 in)3 June 1913
Jul71.1 mm (2.8 in)25 July 1966
Aug68.6 mm (2.7 in)7 August 1959
Sep83.8 mm (3.3 in)29 September 1986
Oct177.3 mm (7.0 in)20 October 1960
Nov199.6 mm (7.9 in)29 November 1954
Dec175.3 mm (6.9 in)28 December 1915

Period of Record Coverage

1908 to 2000
Days with data per year at Waialua 847 72 years of record at Waialua 847, 1908 to 2000. 19 years have data for under 90 percent of days and are left out of rankings: 1924, 1949, 1983, 1984, 1985, 1987, 1988, 1989 and others. 1908: 365 of 366 days1909: 331 of 365 days1910: 356 of 365 days1911: 359 of 365 days1912: 365 of 366 days1913: 365 of 365 days1914: 365 of 365 days1915: 365 of 365 days1916: 366 of 366 days1917: 365 of 365 days1918: 365 of 365 days1919: 365 of 365 days1920: 365 of 366 days1921: 365 of 365 days1922: 364 of 365 days1923: 365 of 365 days1924: 321 of 366 days1925: 333 of 365 days1926: 360 of 365 days1927: 365 of 365 days1949: 92 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 366 of 366 days1953: 364 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 358 of 365 days1959: 364 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 360 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 364 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 360 of 365 days1978: 364 of 365 days1979: 360 of 365 days1980: 364 of 366 days1981: 364 of 365 days1982: 340 of 365 days1983: 311 of 365 days1984: 297 of 366 days1985: 316 of 365 days1986: 337 of 365 days1987: 301 of 365 days1988: 165 of 366 days1989: 183 of 365 days1990: 235 of 365 days1991: 211 of 365 days1992: 219 of 366 days1993: 203 of 365 days1994: 173 of 365 days1995: 228 of 365 days1996: 160 of 366 days1997: 162 of 365 days1998: 224 of 365 days1999: 235 of 365 days2000: 187 of 366 days19101920195019601970198019902000
72 years of record at Waialua 847, 1908 to 2000. 19 years have data for under 90 percent of days and are left out of rankings: 1924, 1949, 1983, 1984, 1985, 1987, 1988, 1989 and others.
Days with data per year at Waialua 847
YearDays with dataShare of yearComplete
1908365100%Yes
190933191%Yes
191035698%Yes
191135998%Yes
1912365100%Yes
1913365100%Yes
1914365100%Yes
1915365100%Yes
1916366100%Yes
1917365100%Yes
1918365100%Yes
1919365100%Yes
1920365100%Yes
1921365100%Yes
1922364100%Yes
1923365100%Yes
192432188%No
192533391%Yes
192636099%Yes
1927365100%Yes
19499225%No
1950365100%Yes
1951365100%Yes
1952366100%Yes
1953364100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
195835898%Yes
1959364100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
197036099%Yes
1971365100%Yes
1972366100%Yes
1973364100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
197736099%Yes
1978364100%Yes
197936099%Yes
198036499%Yes
1981364100%Yes
198234093%Yes
198331185%No
198429781%No
198531687%No
198633792%Yes
198730182%No
198816545%No
198918350%No
199023564%No
199121158%No
199221960%No
199320356%No
199417347%No
199522862%No
199616044%No
199716244%No
199822461%No
199923564%No
200018751%No

Latest Records

20
Latest records at Waialua 847
DateStationRecordValueBeat old record byOld record stoodSignificance
8 September 2000Waialua 847, USdaily high min (Tie)22.8 C (73.0 F)tie82 years8 of 100 (Routine)
2 August 2000Waialua 847, USdaily low max (Tie)27.8 C (82.0 F)tie76 years7 of 100 (Routine)
1 August 2000Waialua 847, USdaily low max (Tie)27.8 C (82.0 F)tie40 years5 of 100 (Routine)
15 May 2000Waialua 847, USdaily low min (Tie)13.9 C (57.0 F)tie82 years8 of 100 (Routine)
10 May 2000Waialua 847, USdaily low min (Tie)15.0 C (59.0 F)tie92 years9 of 100 (Routine)
5 April 2000Waialua 847, USdaily low max (Tie)22.2 C (72.0 F)tie28 years4 of 100 (Routine)
16 March 2000Waialua 847, USdaily high max30.0 C (86.0 F)0.6 C (1.1 F)87 years38 of 100 (Notable)
29 February 2000Waialua 847, USdaily high max (Tie)28.3 C (82.9 F)tie12 years3 of 100 (Routine)
27 January 2000Waialua 847, USdaily low max20.6 C (69.1 F)1.6 C (2.9 F)90 years44 of 100 (Notable)
25 January 2000Waialua 847, USdaily low min (Tie)11.7 C (53.1 F)tie76 years7 of 100 (Routine)
21 January 2000Waialua 847, USdaily low max (Tie)20.6 C (69.1 F)tie89 years8 of 100 (Routine)
20 January 2000Waialua 847, USdaily low max20.6 C (69.1 F)0.5 C (0.9 F)76 years34 of 100 (Routine)
23 December 1999Waialua 847, USdaily low max21.7 C (71.1 F)1.6 C (2.9 F)88 years43 of 100 (Notable)
1 December 1999Waialua 847, USdaily low max (Tie)23.9 C (75.0 F)tie46 years5 of 100 (Routine)
19 November 1999Waialua 847, USdaily low min13.9 C (57.0 F)0.5 C (0.9 F)76 years34 of 100 (Routine)
5 November 1999Waialua 847, USdaily low max (Tie)24.4 C (75.9 F)tie32 years4 of 100 (Routine)
20 October 1999Waialua 847, USmonthly low max21.7 C (71.1 F)0.5 C (0.9 F)20 years28 of 100 (Routine)
19 October 1999Waialua 847, USdaily rain73.7 mm (2.9 in)54.9 mm (2.2 in)37 years59 of 100 (Notable)
1 September 1999Waialua 847, USdaily high min23.9 C (75.0 F)1.7 C (3.1 F)80 years44 of 100 (Notable)
9 August 1999Waialua 847, USdaily low min (Tie)16.7 C (62.1 F)tie37 years5 of 100 (Routine)

Climate Trend

50 complete years, 1908 to 1987
Annual mean temperature at Waialua 847 as warming stripes, 1908 to 1987 One stripe for each of 50 complete years at Waialua 847, 1908 to 1987. Blue stripes are years cooler than the station's own mean of 22.9 C (73.2 F); red stripes are warmer. The coolest year was 1908, at 22.2 C (72.0 F), and the warmest was 1981, at 23.6 C (74.6 F). The strongest colour marks a difference of 0.8 C (1.4 F). 1908: 22.2 C, -0.6 C from the station mean1910: 22.7 C, -0.2 C from the station mean1911: 22.8 C, -0.1 C from the station mean1912: 23.1 C, +0.2 C from the station mean1913: 23.2 C, +0.3 C from the station mean1914: 23.0 C, +0.1 C from the station mean1915: 23.5 C, +0.6 C from the station mean1916: 23.2 C, +0.3 C from the station mean1917: 22.7 C, -0.2 C from the station mean1918: 23.4 C, +0.5 C from the station mean1919: 23.2 C, +0.3 C from the station mean1920: 23.0 C, +0.2 C from the station mean1921: 23.2 C, +0.3 C from the station mean1922: 22.7 C, -0.2 C from the station mean1923: 22.5 C, -0.4 C from the station mean1927: 23.1 C, +0.2 C from the station mean1950: 22.9 C, 0.0 C from the station mean1951: 23.3 C, +0.4 C from the station mean1952: 22.5 C, -0.3 C from the station mean1953: 23.0 C, +0.1 C from the station mean1954: 23.0 C, +0.1 C from the station mean1955: 22.7 C, -0.2 C from the station mean1956: 22.8 C, 0.0 C from the station mean1957: 22.5 C, -0.4 C from the station mean1958: 22.3 C, -0.5 C from the station mean1959: 22.8 C, -0.1 C from the station mean1960: 22.6 C, -0.3 C from the station mean1961: 22.8 C, -0.1 C from the station mean1962: 22.5 C, -0.3 C from the station mean1963: 22.7 C, -0.1 C from the station mean1964: 22.8 C, -0.1 C from the station mean1965: 22.3 C, -0.6 C from the station mean1966: 22.7 C, -0.2 C from the station mean1967: 23.2 C, +0.3 C from the station mean1968: 23.5 C, +0.7 C from the station mean1969: 22.7 C, -0.2 C from the station mean1970: 23.0 C, +0.1 C from the station mean1971: 22.7 C, -0.2 C from the station mean1972: 22.5 C, -0.3 C from the station mean1973: 22.7 C, -0.1 C from the station mean1974: 23.3 C, +0.4 C from the station mean1975: 22.6 C, -0.3 C from the station mean1976: 22.5 C, -0.4 C from the station mean1977: 23.1 C, +0.3 C from the station mean1978: 22.6 C, -0.2 C from the station mean1979: 22.8 C, -0.1 C from the station mean1980: 23.3 C, +0.4 C from the station mean1981: 23.6 C, +0.8 C from the station mean1985: 22.4 C, -0.5 C from the station mean1987: 23.5 C, +0.6 C from the station mean19081920193019401950196019701980
One stripe for each of 50 complete years at Waialua 847, 1908 to 1987. Blue stripes are years cooler than the station's own mean of 22.9 C (73.2 F); red stripes are warmer. The coolest year was 1908, at 22.2 C (72.0 F), and the warmest was 1981, at 23.6 C (74.6 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Waialua 847 as warming stripes, 1908 to 1987
YearAnnual mean temperatureDifference from the station mean
190822.2 C-0.64 C
191022.7 C-0.18 C
191122.8 C-0.08 C
191223.1 C+0.18 C
191323.2 C+0.34 C
191423.0 C+0.14 C
191523.5 C+0.59 C
191623.2 C+0.32 C
191722.7 C-0.18 C
191823.4 C+0.51 C
191923.2 C+0.31 C
192023.0 C+0.16 C
192123.2 C+0.30 C
192222.7 C-0.21 C
192322.5 C-0.41 C
192723.1 C+0.21 C
195022.9 C+0.00 C
195123.3 C+0.43 C
195222.5 C-0.35 C
195323.0 C+0.11 C
195423.0 C+0.10 C
195522.7 C-0.20 C
195622.8 C-0.04 C
195722.5 C-0.39 C
195822.3 C-0.55 C
195922.8 C-0.12 C
196022.6 C-0.27 C
196122.8 C-0.09 C
196222.5 C-0.35 C
196322.7 C-0.14 C
196422.8 C-0.06 C
196522.3 C-0.60 C
196622.7 C-0.20 C
196723.2 C+0.33 C
196823.5 C+0.65 C
196922.7 C-0.17 C
197023.0 C+0.14 C
197122.7 C-0.20 C
197222.5 C-0.34 C
197322.7 C-0.14 C
197423.3 C+0.43 C
197522.6 C-0.30 C
197622.5 C-0.42 C
197723.1 C+0.25 C
197822.6 C-0.24 C
197922.8 C-0.06 C
198023.3 C+0.41 C
198123.6 C+0.76 C
198522.4 C-0.50 C
198723.5 C+0.64 C

The fitted trend in annual mean temperature here over 1908 to 1987 is -0.01 C (-0.05 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.09 to 0.05) per decade. The slope is a straight line fitted to 50 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Waialua 847
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.01 C (-0.05 to 0.03) per decade-0.02 F (-0.09 to 0.05) per decade1908 to 198750Not clearly different from zero
Mean daily maximum0.01 C (-0.05 to 0.07) per decade0.01 F (-0.10 to 0.13) per decade1908 to 198750Not clearly different from zero
Mean daily minimum-0.03 C (-0.09 to 0.03) per decade-0.1 F (-0.2 to 0.1) per decade1908 to 198750Not 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

1908 to 2001
Yearly extremes at Waialua 847: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)36.1 C (97.0 F)191832.8 C (91.0 F)72
Coldest night (TNn)7.8 C (46.0 F)198312.0 C (53.5 F)72
Wettest day (Rx1day)241.0 mm (9.5 in)197690.9 mm (3.6 in)72
Wettest five days (Rx5day)482.6 mm (19.0 in)1976125.0 mm (4.9 in)72
Longest dry spell (CDD)87 days195326 days72

Hottest day (TXx)

Hottest day (TXx) at Waialua 847 by year The hottest day of the year at Waialua 847, 1908 to 2001. The record is 36.1 C (97.0 F) in 1918, marked on the chart; the median year is 32.8 C (91.0 F). 303234363819201940196019802000Record: 36.1 C (97.0 F) in 1918
The hottest day of the year at Waialua 847, 1908 to 2001. The record is 36.1 C (97.0 F) in 1918, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Waialua 847 by year
YearHottest day (TXx)
190831.7 C (89.1 F)
190932.2 C (90.0 F)
191033.3 C (91.9 F)
191132.8 C (91.0 F)
191235.0 C (95.0 F)
191334.4 C (93.9 F)
191435.6 C (96.1 F)
191533.9 C (93.0 F)
191632.2 C (90.0 F)
191731.7 C (89.1 F)
191836.1 C (97.0 F)
191933.3 C (91.9 F)
192032.2 C (90.0 F)
192133.3 C (91.9 F)
192232.8 C (91.0 F)
192332.8 C (91.0 F)
192432.8 C (91.0 F)
192531.7 C (89.1 F)
192632.8 C (91.0 F)
192734.4 C (93.9 F)
194931.1 C (88.0 F)
195032.8 C (91.0 F)
195133.3 C (91.9 F)
195231.7 C (89.1 F)
195332.8 C (91.0 F)
195432.2 C (90.0 F)
195530.6 C (87.1 F)
195631.7 C (89.1 F)
195732.8 C (91.0 F)
195831.7 C (89.1 F)
195932.2 C (90.0 F)
196032.8 C (91.0 F)
196132.2 C (90.0 F)
196232.8 C (91.0 F)
196332.2 C (90.0 F)
196432.2 C (90.0 F)
196532.2 C (90.0 F)
196634.4 C (93.9 F)
196733.3 C (91.9 F)
196833.3 C (91.9 F)
196932.8 C (91.0 F)
197032.2 C (90.0 F)
197131.7 C (89.1 F)
197234.4 C (93.9 F)
197332.2 C (90.0 F)
197433.9 C (93.0 F)
197532.2 C (90.0 F)
197632.2 C (90.0 F)
197732.8 C (91.0 F)
197833.3 C (91.9 F)
197933.9 C (93.0 F)
198033.3 C (91.9 F)
198133.3 C (91.9 F)
198232.2 C (90.0 F)
198332.2 C (90.0 F)
198432.8 C (91.0 F)
198533.9 C (93.0 F)
198635.6 C (96.1 F)
198733.9 C (93.0 F)
198831.7 C (89.1 F)
198931.1 C (88.0 F)
199033.3 C (91.9 F)
199131.1 C (88.0 F)
199231.7 C (89.1 F)
199332.8 C (91.0 F)
199430.6 C (87.1 F)
199531.7 C (89.1 F)
199633.3 C (91.9 F)
199733.3 C (91.9 F)
199831.7 C (89.1 F)
199931.7 C (89.1 F)
200032.8 C (91.0 F)
2001n/a

Coldest night (TNn)

Coldest night (TNn) at Waialua 847 by year The coldest night of the year at Waialua 847, 1908 to 2001. The record is 7.8 C (46.0 F) in 1983, marked on the chart; the median year is 12.0 C (53.5 F). 6810121419201940196019802000Record: 7.8 C (46.0 F) in 1983
The coldest night of the year at Waialua 847, 1908 to 2001. The record is 7.8 C (46.0 F) in 1983, marked on the chart; the median year is 12.0 C (53.5 F).
Coldest night (TNn) at Waialua 847 by year
YearColdest night (TNn)
190811.1 C (52.0 F)
190910.6 C (51.1 F)
191012.8 C (55.0 F)
191112.8 C (55.0 F)
191212.2 C (54.0 F)
191312.2 C (54.0 F)
191412.2 C (54.0 F)
191512.2 C (54.0 F)
191612.8 C (55.0 F)
191711.7 C (53.1 F)
191810.6 C (51.1 F)
191912.2 C (54.0 F)
192013.3 C (55.9 F)
192113.9 C (57.0 F)
192212.2 C (54.0 F)
192312.2 C (54.0 F)
192410.6 C (51.1 F)
192513.9 C (57.0 F)
192611.1 C (52.0 F)
192711.1 C (52.0 F)
194913.9 C (57.0 F)
195013.9 C (57.0 F)
195111.1 C (52.0 F)
195213.9 C (57.0 F)
195312.2 C (54.0 F)
195412.8 C (55.0 F)
195512.2 C (54.0 F)
195613.3 C (55.9 F)
195712.8 C (55.0 F)
195811.7 C (53.1 F)
195911.1 C (52.0 F)
196011.1 C (52.0 F)
19619.4 C (48.9 F)
196211.1 C (52.0 F)
196311.1 C (52.0 F)
196411.7 C (53.1 F)
196510.6 C (51.1 F)
196610.0 C (50.0 F)
196712.2 C (54.0 F)
196813.3 C (55.9 F)
19699.4 C (48.9 F)
197011.1 C (52.0 F)
197111.1 C (52.0 F)
197211.7 C (53.1 F)
197312.2 C (54.0 F)
197412.8 C (55.0 F)
197513.3 C (55.9 F)
197611.7 C (53.1 F)
197712.8 C (55.0 F)
197811.1 C (52.0 F)
197912.2 C (54.0 F)
198010.0 C (50.0 F)
198111.1 C (52.0 F)
198212.2 C (54.0 F)
19837.8 C (46.0 F)
19848.3 C (46.9 F)
198510.0 C (50.0 F)
198610.6 C (51.1 F)
198710.0 C (50.0 F)
198813.3 C (55.9 F)
198912.2 C (54.0 F)
199012.8 C (55.0 F)
199112.8 C (55.0 F)
199212.2 C (54.0 F)
199311.1 C (52.0 F)
199410.0 C (50.0 F)
199510.0 C (50.0 F)
199612.2 C (54.0 F)
199711.7 C (53.1 F)
199810.0 C (50.0 F)
199912.2 C (54.0 F)
200011.7 C (53.1 F)
2001n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Waialua 847 by year The wettest day of the year at Waialua 847, 1908 to 2001. The record is 241.0 mm (9.5 in) in 1976, marked on the chart; the median year is 90.9 mm (3.6 in). 010020030019201940196019802000Record: 241.0 mm (9.5 in) in 1976
The wettest day of the year at Waialua 847, 1908 to 2001. The record is 241.0 mm (9.5 in) in 1976, marked on the chart; the median year is 90.9 mm (3.6 in).
Wettest day (Rx1day) at Waialua 847 by year
YearWettest day (Rx1day)
1908147.3 mm (5.8 in)
190959.7 mm (2.4 in)
1910117.1 mm (4.6 in)
191158.4 mm (2.3 in)
191265.0 mm (2.6 in)
191378.5 mm (3.1 in)
191441.9 mm (1.6 in)
1915175.3 mm (6.9 in)
1916101.6 mm (4.0 in)
191786.9 mm (3.4 in)
1918142.2 mm (5.6 in)
191952.8 mm (2.1 in)
1920156.2 mm (6.1 in)
192174.4 mm (2.9 in)
192274.7 mm (2.9 in)
1923137.2 mm (5.4 in)
1924102.4 mm (4.0 in)
192546.5 mm (1.8 in)
192647.0 mm (1.9 in)
1927157.5 mm (6.2 in)
194974.4 mm (2.9 in)
1950134.1 mm (5.3 in)
1951105.2 mm (4.1 in)
195297.0 mm (3.8 in)
195338.4 mm (1.5 in)
1954199.6 mm (7.9 in)
195591.4 mm (3.6 in)
1956155.7 mm (6.1 in)
1957124.2 mm (4.9 in)
1958124.5 mm (4.9 in)
195983.8 mm (3.3 in)
1960177.3 mm (7.0 in)
196175.4 mm (3.0 in)
1962135.1 mm (5.3 in)
1963100.6 mm (4.0 in)
1964113.8 mm (4.5 in)
1965122.7 mm (4.8 in)
1966111.8 mm (4.4 in)
196779.8 mm (3.1 in)
196881.3 mm (3.2 in)
196996.0 mm (3.8 in)
197090.9 mm (3.6 in)
1971142.2 mm (5.6 in)
197286.1 mm (3.4 in)
197344.5 mm (1.8 in)
1974160.0 mm (6.3 in)
197589.2 mm (3.5 in)
1976241.0 mm (9.5 in)
1977104.4 mm (4.1 in)
1978131.3 mm (5.2 in)
197980.8 mm (3.2 in)
1980122.9 mm (4.8 in)
198178.7 mm (3.1 in)
1982157.0 mm (6.2 in)
198315.5 mm (0.6 in)
198429.5 mm (1.2 in)
198553.8 mm (2.1 in)
198683.8 mm (3.3 in)
198790.9 mm (3.6 in)
1988199.4 mm (7.9 in)
198956.6 mm (2.2 in)
199051.3 mm (2.0 in)
199184.6 mm (3.3 in)
199268.3 mm (2.7 in)
1993106.7 mm (4.2 in)
199494.0 mm (3.7 in)
199541.1 mm (1.6 in)
1996157.0 mm (6.2 in)
199754.1 mm (2.1 in)
199817.8 mm (0.7 in)
199973.7 mm (2.9 in)
200025.9 mm (1.0 in)
2001n/a

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Waialua 847 by year The wettest five days of the year at Waialua 847, 1908 to 2001. The record is 482.6 mm (19.0 in) in 1976, marked on the chart; the median year is 125.0 mm (4.9 in). 020040060019201940196019802000Record: 482.6 mm (19.0 in) in 1976
The wettest five days of the year at Waialua 847, 1908 to 2001. The record is 482.6 mm (19.0 in) in 1976, marked on the chart; the median year is 125.0 mm (4.9 in).
Wettest five days (Rx5day) at Waialua 847 by year
YearWettest five days (Rx5day)
1908218.7 mm (8.6 in)
1909125.8 mm (5.0 in)
1910137.2 mm (5.4 in)
191199.8 mm (3.9 in)
191293.7 mm (3.7 in)
1913107.7 mm (4.2 in)
191475.2 mm (3.0 in)
1915327.9 mm (12.9 in)
1916181.2 mm (7.1 in)
1917113.1 mm (4.5 in)
1918266.5 mm (10.5 in)
191960.4 mm (2.4 in)
1920243.8 mm (9.6 in)
1921161.4 mm (6.4 in)
192279.7 mm (3.1 in)
1923309.7 mm (12.2 in)
1924129.3 mm (5.1 in)
192561.4 mm (2.4 in)
192686.1 mm (3.4 in)
1927127.2 mm (5.0 in)
1949118.5 mm (4.7 in)
1950166.8 mm (6.6 in)
1951196.2 mm (7.7 in)
1952125.2 mm (4.9 in)
195359.2 mm (2.3 in)
1954213.9 mm (8.4 in)
1955164.6 mm (6.5 in)
1956159.0 mm (6.3 in)
1957270.6 mm (10.7 in)
1958168.2 mm (6.6 in)
1959101.1 mm (4.0 in)
1960185.9 mm (7.3 in)
196183.8 mm (3.3 in)
1962158.5 mm (6.2 in)
1963199.1 mm (7.8 in)
1964291.1 mm (11.5 in)
1965299.8 mm (11.8 in)
1966230.7 mm (9.1 in)
1967101.3 mm (4.0 in)
1968144.1 mm (5.7 in)
1969124.7 mm (4.9 in)
1970123.7 mm (4.9 in)
1971212.6 mm (8.4 in)
1972107.2 mm (4.2 in)
197361.8 mm (2.4 in)
1974241.8 mm (9.5 in)
1975201.4 mm (7.9 in)
1976482.6 mm (19.0 in)
197787.9 mm (3.5 in)
1978248.6 mm (9.8 in)
1979142.3 mm (5.6 in)
1980245.6 mm (9.7 in)
198187.3 mm (3.4 in)
1982218.5 mm (8.6 in)
198323.4 mm (0.9 in)
198430.0 mm (1.2 in)
198533.3 mm (1.3 in)
198687.6 mm (3.4 in)
198754.6 mm (2.1 in)
198831.6 mm (1.2 in)
198971.4 mm (2.8 in)
1990101.1 mm (4.0 in)
1991145.3 mm (5.7 in)
199269.3 mm (2.7 in)
1993117.4 mm (4.6 in)
1994105.2 mm (4.1 in)
199517.2 mm (0.7 in)
1996329.8 mm (13.0 in)
199768.8 mm (2.7 in)
19985.3 mm (0.21 in)
19992.4 mm (0.09 in)
200026.5 mm (1.0 in)
2001n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Waialua 847 by year The longest dry spell of the year at Waialua 847, 1908 to 2001. The record is 87 days in 1953, marked on the chart; the median year is 26 days. 02040608010019201940196019802000Record: 87 days in 1953
The longest dry spell of the year at Waialua 847, 1908 to 2001. The record is 87 days in 1953, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Waialua 847 by year
YearLongest dry spell (CDD)
190849 days
190932 days
191020 days
191121 days
191217 days
191338 days
191418 days
191517 days
191629 days
191721 days
191828 days
191929 days
192018 days
192124 days
192225 days
192329 days
192439 days
192528 days
192627 days
192731 days
194923 days
195038 days
195126 days
195226 days
195387 days
195426 days
195525 days
195624 days
195762 days
195822 days
195934 days
196024 days
196125 days
196229 days
196320 days
196434 days
196532 days
196623 days
196729 days
196826 days
196915 days
197023 days
197126 days
197225 days
197328 days
197434 days
197537 days
197632 days
197725 days
197827 days
197920 days
198018 days
198125 days
198217 days
198317 days
198420 days
198526 days
198619 days
198721 days
198824 days
198936 days
199035 days
199121 days
199219 days
199328 days
199435 days
199531 days
199629 days
199710 days
199825 days
199910 days
200030 days
2001n/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.

Rainfall Return Levels

50 years, 1908 to 1980

A day with at least 100.8 mm (4.0 in) of rain is expected about once in 2 years. A day with at least 230.8 mm (9.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Waialua 847: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years100.8 mm (4.0 in)
5 years139.8 mm (5.5 in)
10 years163.8 mm (6.4 in)
25 years192.3 mm (7.6 in)
50 years212.2 mm (8.4 in)
100 years230.8 mm (9.1 in)Longer than the 50 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, 50 years of values from 1908 to 1980.

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: 241.0 mm (9.5 in) in 1976; 199.6 mm (7.9 in) in 1954; 177.3 mm (7.0 in) in 1960.

Download the Data

  • Data for Waialua 847 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Waialua 847 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).