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Waianae 798 Weather Records (USC00519231)

Record envelope, standing records and threshold days for Waianae 798 (USC00519231), Hawaii, United States, with 115 years of record.

Key Facts for Waianae 798

  • Waianae 798 (USC00519231) is a weather station in Hawaii, United States at 21.43 latitude and -158.18 longitude, 8 m (25 ft) above sea level.
  • The station reports from 1905 to 2019, 115 years of record.
  • 1,464 records set at Waianae 798 still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Waianae 798 set a daily record precipitation of 12.2 mm (0.5 in) on 23 September 2019.

About the Station

  • Location: Hawaii, United States, 21.43 latitude, -158.18 longitude.
  • Elevation: 8 m (25 ft).
  • Period of record: 1905 to 2019, 115 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 Waianae 798, with 2026 drawn through them The band shows the record high and record low for each calendar day at Waianae 798. 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 Waianae 798. 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 Waianae 798, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan32.2 C (90.0 F)7.2 C (45.0 F)n/an/a
Feb32.2 C (90.0 F)8.9 C (48.0 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)11.1 C (52.0 F)n/an/a
May35.6 C (96.1 F)12.2 C (54.0 F)n/an/a
Jun34.4 C (93.9 F)13.3 C (55.9 F)n/an/a
Jul35.0 C (95.0 F)13.9 C (57.0 F)n/an/a
Aug35.6 C (96.1 F)14.4 C (57.9 F)n/an/a
Sep35.0 C (95.0 F)14.4 C (57.9 F)n/an/a
Oct35.0 C (95.0 F)13.3 C (55.9 F)n/an/a
Nov33.3 C (91.9 F)11.1 C (52.0 F)n/an/a
Dec32.8 C (91.0 F)10.6 C (51.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Waianae 798 by the year they were set 1,464 records at Waianae 798 still stand. 1927 holds the most, with 93. 02550751001905: 351906: 331907: 411908: 171909: 211910: 551911: 271912: 171913: 141914: 421915: 401916: 201917: 341918: 551919: 191920: 271921: 681922: 181923: 281924: 151925: 401926: 621927: 931928: 851929: 381930: 681931: 371932: 281933: 291934: 211935: 221936: 161937: 141938: 111939: 121940: 481941: 221942: 291943: 391944: 341945: 221946: 141947: 54190519101915192019251930193519401945
1,464 records at Waianae 798 still stand. 1927 holds the most, with 93.
Standing records at Waianae 798 by the year they were set
Year setStanding records
190535
190633
190741
190817
190921
191055
191127
191217
191314
191442
191540
191620
191734
191855
191919
192027
192168
192218
192328
192415
192540
192662
192793
192885
192938
193068
193137
193228
193329
193421
193522
193616
193714
193811
193912
194048
194122
194229
194339
194434
194522
194614
194754

All-Time Record Progression

3 new records
When Waianae 798 set new all-time records 3 all-time records were set at Waianae 798 between 23 October 1939 and 11 October 1989. Each dot is a new record. Record daily precipitation23 October 1939: Record daily precipitation 246.9 mm (9.7 in)29 November 1954: Record daily precipitation 254.5 mm (10.0 in)11 October 1989: Record daily precipitation 257.0 mm (10.1 in)194019501960197019801990
3 all-time records were set at Waianae 798 between 23 October 1939 and 11 October 1989. Each dot is a new record.
When Waianae 798 set new all-time records
DateKindDetail
1939-10-23Record daily precipitationRecord daily precipitation 246.9 mm (9.7 in)
1954-11-29Record daily precipitationRecord daily precipitation 254.5 mm (10.0 in)
1989-10-11Record daily precipitationRecord daily precipitation 257.0 mm (10.1 in)

Wettest Day of Each Month

Oct: 257.0 mm (10.1 in)
Record daily precipitation for each month at Waianae 798 The wettest day on record for each calendar month at Waianae 798. The most was 257.0 mm (10.1 in) on 11 October 1989. 0100200300 Jan: 205.5 mm (8.1 in), 17 January 1949 Jan Feb: 248.7 mm (9.8 in), 8 February 1976 Feb Mar: 121.9 mm (4.8 in), 3 March 1933 Mar Apr: 181.9 mm (7.2 in), 22 April 1924 Apr May: 61.0 mm (2.4 in), 30 May 1920 May Jun: 65.5 mm (2.6 in), 16 June 1971 Jun Jul: 61.7 mm (2.4 in), 26 July 1945 Jul Aug: 82.6 mm (3.3 in), 24 August 2016 Aug Sep: 87.4 mm (3.4 in), 21 September 1951 Sep Oct: 257.0 mm (10.1 in), 11 October 1989 Oct Nov: 254.5 mm (10.0 in), 29 November 1954 Nov Dec: 191.0 mm (7.5 in), 11 December 2008 Dec
The wettest day on record for each calendar month at Waianae 798. The most was 257.0 mm (10.1 in) on 11 October 1989.
Record daily precipitation for each month at Waianae 798
MonthRecord daily precipitation (mm)Date
Jan205.5 mm (8.1 in)17 January 1949
Feb248.7 mm (9.8 in)8 February 1976
Mar121.9 mm (4.8 in)3 March 1933
Apr181.9 mm (7.2 in)22 April 1924
May61.0 mm (2.4 in)30 May 1920
Jun65.5 mm (2.6 in)16 June 1971
Jul61.7 mm (2.4 in)26 July 1945
Aug82.6 mm (3.3 in)24 August 2016
Sep87.4 mm (3.4 in)21 September 1951
Oct257.0 mm (10.1 in)11 October 1989
Nov254.5 mm (10.0 in)29 November 1954
Dec191.0 mm (7.5 in)11 December 2008

Period of Record Coverage

1905 to 1947
Days with data per year at Waianae 798 43 years of record at Waianae 798, 1905 to 1947. 3 years have data for under 90 percent of days and are left out of rankings: 1905, 1909, 1939. 1905: 321 of 365 days1906: 358 of 365 days1907: 365 of 365 days1908: 366 of 366 days1909: 299 of 365 days1910: 345 of 365 days1911: 354 of 365 days1912: 363 of 366 days1913: 354 of 365 days1914: 364 of 365 days1915: 360 of 365 days1916: 362 of 366 days1917: 365 of 365 days1918: 351 of 365 days1919: 365 of 365 days1920: 362 of 366 days1921: 365 of 365 days1922: 365 of 365 days1923: 365 of 365 days1924: 366 of 366 days1925: 365 of 365 days1926: 365 of 365 days1927: 364 of 365 days1928: 366 of 366 days1929: 365 of 365 days1930: 365 of 365 days1931: 364 of 365 days1932: 365 of 366 days1933: 365 of 365 days1934: 365 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 365 of 365 days1938: 365 of 365 days1939: 244 of 365 days1940: 366 of 366 days1941: 365 of 365 days1942: 364 of 365 days1943: 365 of 365 days1944: 366 of 366 days1945: 365 of 365 days1946: 365 of 365 days1947: 365 of 365 days1910192019301940
43 years of record at Waianae 798, 1905 to 1947. 3 years have data for under 90 percent of days and are left out of rankings: 1905, 1909, 1939.
Days with data per year at Waianae 798
YearDays with dataShare of yearComplete
190532188%No
190635898%Yes
1907365100%Yes
1908366100%Yes
190929982%No
191034595%Yes
191135497%Yes
191236399%Yes
191335497%Yes
1914364100%Yes
191536099%Yes
191636299%Yes
1917365100%Yes
191835196%Yes
1919365100%Yes
192036299%Yes
1921365100%Yes
1922365100%Yes
1923365100%Yes
1924366100%Yes
1925365100%Yes
1926365100%Yes
1927364100%Yes
1928366100%Yes
1929365100%Yes
1930365100%Yes
1931364100%Yes
1932365100%Yes
1933365100%Yes
1934365100%Yes
1935365100%Yes
1936366100%Yes
1937365100%Yes
1938365100%Yes
193924467%No
1940366100%Yes
1941365100%Yes
1942364100%Yes
1943365100%Yes
1944366100%Yes
1945365100%Yes
1946365100%Yes
1947365100%Yes

Latest Records

20
Latest records at Waianae 798
DateStationRecordValueBeat old record byOld record stoodSignificance
23 September 2019Waianae 798, USdaily rain12.2 mm (0.5 in)1.8 mm (0.07 in)64 years20 of 100 (Routine)
26 June 2019Waianae 798, USdaily rain55.9 mm (2.2 in)23.6 mm (0.9 in)24 years46 of 100 (Notable)
13 June 2019Waianae 798, USdaily rain6.1 mm (0.24 in)2.3 mm (0.09 in)69 years20 of 100 (Routine)
27 September 2018Waianae 798, USdaily rain16.5 mm (0.6 in)2.0 mm (0.08 in)49 years20 of 100 (Routine)
28 May 2018Waianae 798, USdaily rain14.0 mm (0.6 in)3.6 mm (0.14 in)111 years20 of 100 (Routine)
22 October 2017Waianae 798, USdaily rain41.1 mm (1.6 in)26.4 mm (1.0 in)80 years45 of 100 (Notable)
21 October 2017Waianae 798, USdaily rain23.6 mm (0.9 in)2.8 mm (0.11 in)100 years20 of 100 (Routine)
30 August 2017Waianae 798, USdaily rain11.2 mm (0.4 in)0.5 mm (0.02 in)80 years20 of 100 (Routine)
29 August 2017Waianae 798, USdaily rain15.7 mm (0.6 in)13.2 mm (0.5 in)4 years20 of 100 (Routine)
30 April 2017Waianae 798, USdaily rain27.9 mm (1.1 in)15.2 mm (0.6 in)66 years39 of 100 (Notable)
1 March 2017Waianae 798, USdaily rain76.7 mm (3.0 in)38.3 mm (1.5 in)72 years55 of 100 (Notable)
24 August 2016Waianae 798, USmonthly rain82.6 mm (3.3 in)1.8 mm (0.07 in)78 years44 of 100 (Notable)
22 August 2016Waianae 798, USdaily rain10.4 mm (0.4 in)3.8 mm (0.15 in)34 years20 of 100 (Routine)
23 November 2015Waianae 798, USdaily rain24.6 mm (1.0 in)6.3 mm (0.25 in)9 years14 of 100 (Routine)
22 November 2015Waianae 798, USdaily rain23.1 mm (0.9 in)7.4 mm (0.29 in)9 years15 of 100 (Routine)
15 September 2015Waianae 798, USdaily rain30.5 mm (1.2 in)6.4 mm (0.25 in)9 years19 of 100 (Routine)
12 September 2015Waianae 798, USdaily rain17.8 mm (0.7 in)2.8 mm (0.11 in)26 years20 of 100 (Routine)
24 August 2015Waianae 798, USdaily rain53.6 mm (2.1 in)47.5 mm (1.9 in)0 years50 of 100 (Notable)
19 October 2014Waianae 798, USdaily rain83.6 mm (3.3 in)20.1 mm (0.8 in)15 years22 of 100 (Routine)
24 August 2014Waianae 798, USdaily rain6.1 mm (0.24 in)1.3 mm (0.05 in)76 years20 of 100 (Routine)

Climate Trend

37 complete years, 1906 to 1947
Annual mean temperature at Waianae 798 as warming stripes, 1906 to 1947 One stripe for each of 37 complete years at Waianae 798, 1906 to 1947. Blue stripes are years cooler than the station's own mean of 24.4 C (76.0 F); red stripes are warmer. The coolest year was 1928, at 22.8 C (73.1 F), and the warmest was 1927, at 25.3 C (77.6 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1906: 24.7 C, +0.2 C from the station mean1907: 24.0 C, -0.4 C from the station mean1908: 24.0 C, -0.4 C from the station mean1911: 24.0 C, -0.5 C from the station mean1912: 24.3 C, -0.2 C from the station mean1913: 24.1 C, -0.3 C from the station mean1914: 24.0 C, -0.4 C from the station mean1915: 24.6 C, +0.1 C from the station mean1916: 24.3 C, -0.1 C from the station mean1917: 23.7 C, -0.7 C from the station mean1919: 24.3 C, -0.2 C from the station mean1920: 23.8 C, -0.6 C from the station mean1921: 23.9 C, -0.6 C from the station mean1922: 24.3 C, -0.1 C from the station mean1923: 24.7 C, +0.2 C from the station mean1924: 24.6 C, +0.2 C from the station mean1925: 25.0 C, +0.6 C from the station mean1926: 25.1 C, +0.7 C from the station mean1927: 25.3 C, +0.9 C from the station mean1928: 22.8 C, -1.6 C from the station mean1929: 24.6 C, +0.2 C from the station mean1930: 25.1 C, +0.6 C from the station mean1931: 23.9 C, -0.5 C from the station mean1932: 24.6 C, +0.2 C from the station mean1933: 23.9 C, -0.5 C from the station mean1934: 24.7 C, +0.2 C from the station mean1935: 24.5 C, +0.1 C from the station mean1936: 24.7 C, +0.2 C from the station mean1937: 24.2 C, -0.2 C from the station mean1938: 24.6 C, +0.2 C from the station mean1940: 25.1 C, +0.6 C from the station mean1941: 24.9 C, +0.4 C from the station mean1942: 24.6 C, +0.2 C from the station mean1943: 24.7 C, +0.3 C from the station mean1944: 24.6 C, +0.1 C from the station mean1946: 25.1 C, +0.6 C from the station mean1947: 25.2 C, +0.7 C from the station mean190619101915192019251930193519401945
One stripe for each of 37 complete years at Waianae 798, 1906 to 1947. Blue stripes are years cooler than the station's own mean of 24.4 C (76.0 F); red stripes are warmer. The coolest year was 1928, at 22.8 C (73.1 F), and the warmest was 1927, at 25.3 C (77.6 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Waianae 798 as warming stripes, 1906 to 1947
YearAnnual mean temperatureDifference from the station mean
190624.7 C+0.21 C
190724.0 C-0.42 C
190824.0 C-0.41 C
191124.0 C-0.49 C
191224.3 C-0.18 C
191324.1 C-0.31 C
191424.0 C-0.42 C
191524.6 C+0.11 C
191624.3 C-0.12 C
191723.7 C-0.74 C
191924.3 C-0.20 C
192023.8 C-0.64 C
192123.9 C-0.58 C
192224.3 C-0.15 C
192324.7 C+0.20 C
192424.6 C+0.19 C
192525.0 C+0.57 C
192625.1 C+0.66 C
192725.3 C+0.89 C
192822.8 C-1.62 C
192924.6 C+0.19 C
193025.1 C+0.60 C
193123.9 C-0.51 C
193224.6 C+0.19 C
193323.9 C-0.55 C
193424.7 C+0.21 C
193524.5 C+0.07 C
193624.7 C+0.24 C
193724.2 C-0.23 C
193824.6 C+0.15 C
194025.1 C+0.64 C
194124.9 C+0.43 C
194224.6 C+0.17 C
194324.7 C+0.25 C
194424.6 C+0.13 C
194625.1 C+0.64 C
194725.2 C+0.72 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1906 to 1947. In Fahrenheit: 0.3 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Waianae 798
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.1 to 0.3) per decade0.3 F (0.1 to 0.6) per decade1906 to 194737Rise
Mean daily maximum0.2 C (0.1 to 0.4) per decade0.4 F (0.1 to 0.7) per decade1906 to 194737Rise
Mean daily minimum0.2 C (-0.1 to 0.4) per decade0.3 F (-0.1 to 0.7) per decade1906 to 194737Not 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

1905 to 2019
Yearly extremes at Waianae 798: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.6 C (96.1 F)192733.9 C (93.0 F)43
Coldest night (TNn)7.2 C (45.0 F)192911.7 C (53.1 F)43
Wettest day (Rx1day)257.0 mm (10.1 in)198971.6 mm (2.8 in)115
Wettest five days (Rx5day)482.6 mm (19.0 in)1976103.5 mm (4.1 in)115
Longest dry spell (CDD)134 days190849 days115

Hottest day (TXx)

Hottest day (TXx) at Waianae 798 by year The hottest day of the year at Waianae 798, 1905 to 2019. The record is 35.6 C (96.1 F) in 1927, marked on the chart; the median year is 33.9 C (93.0 F). 323334353619201940196019802000Record: 35.6 C (96.1 F) in 1927
The hottest day of the year at Waianae 798, 1905 to 2019. The record is 35.6 C (96.1 F) in 1927, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Waianae 798 by year
YearHottest day (TXx)
190533.3 C (91.9 F)
190633.9 C (93.0 F)
190733.3 C (91.9 F)
190832.8 C (91.0 F)
190932.8 C (91.0 F)
191032.8 C (91.0 F)
191132.8 C (91.0 F)
191233.3 C (91.9 F)
191333.3 C (91.9 F)
191433.9 C (93.0 F)
191533.9 C (93.0 F)
191633.9 C (93.0 F)
191735.0 C (95.0 F)
191835.0 C (95.0 F)
191932.8 C (91.0 F)
192032.8 C (91.0 F)
192132.8 C (91.0 F)
192233.3 C (91.9 F)
192333.9 C (93.0 F)
192433.3 C (91.9 F)
192533.3 C (91.9 F)
192634.4 C (93.9 F)
192735.6 C (96.1 F)
192833.9 C (93.0 F)
192934.4 C (93.9 F)
193034.4 C (93.9 F)
193133.3 C (91.9 F)
193232.8 C (91.0 F)
193332.2 C (90.0 F)
193433.9 C (93.0 F)
193533.9 C (93.0 F)
193633.3 C (91.9 F)
193733.3 C (91.9 F)
193833.3 C (91.9 F)
193933.3 C (91.9 F)
194035.6 C (96.1 F)
194135.0 C (95.0 F)
194235.0 C (95.0 F)
194335.6 C (96.1 F)
194435.0 C (95.0 F)
194533.9 C (93.0 F)
194634.4 C (93.9 F)
194735.0 C (95.0 F)
1948n/a
1949n/a
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2017n/a
2018n/a
2019n/a

Coldest night (TNn)

Coldest night (TNn) at Waianae 798 by year The coldest night of the year at Waianae 798, 1905 to 2019. The record is 7.2 C (45.0 F) in 1929, marked on the chart; the median year is 11.7 C (53.1 F). 6810121419201940196019802000Record: 7.2 C (45.0 F) in 1929
The coldest night of the year at Waianae 798, 1905 to 2019. The record is 7.2 C (45.0 F) in 1929, marked on the chart; the median year is 11.7 C (53.1 F).
Coldest night (TNn) at Waianae 798 by year
YearColdest night (TNn)
190511.7 C (53.1 F)
190611.1 C (52.0 F)
190712.8 C (55.0 F)
190811.7 C (53.1 F)
190911.7 C (53.1 F)
191012.2 C (54.0 F)
191111.1 C (52.0 F)
191212.8 C (55.0 F)
191311.1 C (52.0 F)
191411.1 C (52.0 F)
191511.1 C (52.0 F)
191612.8 C (55.0 F)
191712.2 C (54.0 F)
191812.2 C (54.0 F)
191911.7 C (53.1 F)
192011.7 C (53.1 F)
192113.3 C (55.9 F)
192213.3 C (55.9 F)
192311.1 C (52.0 F)
192412.8 C (55.0 F)
192510.6 C (51.1 F)
192611.1 C (52.0 F)
192710.0 C (50.0 F)
19288.9 C (48.0 F)
19297.2 C (45.0 F)
193011.7 C (53.1 F)
193112.2 C (54.0 F)
193211.1 C (52.0 F)
193312.2 C (54.0 F)
193411.7 C (53.1 F)
193511.7 C (53.1 F)
193611.7 C (53.1 F)
193710.6 C (51.1 F)
193812.2 C (54.0 F)
193912.2 C (54.0 F)
194011.7 C (53.1 F)
194112.2 C (54.0 F)
194211.1 C (52.0 F)
194310.6 C (51.1 F)
194412.8 C (55.0 F)
194511.7 C (53.1 F)
194612.2 C (54.0 F)
194711.1 C (52.0 F)
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
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2018n/a
2019n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Waianae 798 by year The wettest day of the year at Waianae 798, 1905 to 2019. The record is 257.0 mm (10.1 in) in 1989, marked on the chart; the median year is 71.6 mm (2.8 in). 010020030019201940196019802000Record: 257.0 mm (10.1 in) in 1989
The wettest day of the year at Waianae 798, 1905 to 2019. The record is 257.0 mm (10.1 in) in 1989, marked on the chart; the median year is 71.6 mm (2.8 in).
Wettest day (Rx1day) at Waianae 798 by year
YearWettest day (Rx1day)
190540.6 mm (1.6 in)
1906144.3 mm (5.7 in)
190782.6 mm (3.3 in)
190890.7 mm (3.6 in)
190966.8 mm (2.6 in)
191091.4 mm (3.6 in)
191127.9 mm (1.1 in)
191245.0 mm (1.8 in)
191362.5 mm (2.5 in)
191462.0 mm (2.4 in)
1915174.8 mm (6.9 in)
191688.1 mm (3.5 in)
191771.9 mm (2.8 in)
1918186.9 mm (7.4 in)
191939.4 mm (1.6 in)
1920140.2 mm (5.5 in)
192141.9 mm (1.6 in)
192239.6 mm (1.6 in)
1923104.6 mm (4.1 in)
1924181.9 mm (7.2 in)
192532.3 mm (1.3 in)
192630.0 mm (1.2 in)
1927130.0 mm (5.1 in)
192848.3 mm (1.9 in)
192959.4 mm (2.3 in)
193080.0 mm (3.1 in)
193154.4 mm (2.1 in)
1932121.9 mm (4.8 in)
1933121.9 mm (4.8 in)
193449.5 mm (1.9 in)
193561.5 mm (2.4 in)
1936105.4 mm (4.1 in)
193764.3 mm (2.5 in)
1938128.8 mm (5.1 in)
1939246.9 mm (9.7 in)
194094.7 mm (3.7 in)
194145.7 mm (1.8 in)
194264.8 mm (2.6 in)
194358.4 mm (2.3 in)
194438.9 mm (1.5 in)
194595.3 mm (3.8 in)
194651.8 mm (2.0 in)
194725.9 mm (1.0 in)
194855.1 mm (2.2 in)
1949205.5 mm (8.1 in)
195038.9 mm (1.5 in)
195187.9 mm (3.5 in)
195244.2 mm (1.7 in)
195315.7 mm (0.6 in)
1954254.5 mm (10.0 in)
1955101.6 mm (4.0 in)
195654.6 mm (2.1 in)
195773.2 mm (2.9 in)
1958116.3 mm (4.6 in)
195944.2 mm (1.7 in)
196023.4 mm (0.9 in)
196143.7 mm (1.7 in)
1962109.5 mm (4.3 in)
1963102.9 mm (4.1 in)
196459.7 mm (2.4 in)
196598.6 mm (3.9 in)
196662.0 mm (2.4 in)
196765.3 mm (2.6 in)
196888.9 mm (3.5 in)
1969128.3 mm (5.1 in)
197016.8 mm (0.7 in)
197184.1 mm (3.3 in)
197286.4 mm (3.4 in)
197336.8 mm (1.4 in)
197462.2 mm (2.4 in)
1975102.1 mm (4.0 in)
1976248.7 mm (9.8 in)
197740.9 mm (1.6 in)
197892.7 mm (3.6 in)
197991.4 mm (3.6 in)
198041.9 mm (1.6 in)
198158.9 mm (2.3 in)
1982192.0 mm (7.6 in)
198331.8 mm (1.3 in)
198496.5 mm (3.8 in)
1985119.9 mm (4.7 in)
198642.7 mm (1.7 in)
1987106.4 mm (4.2 in)
198880.5 mm (3.2 in)
1989257.0 mm (10.1 in)
199053.8 mm (2.1 in)
199143.7 mm (1.7 in)
1992100.6 mm (4.0 in)
199325.4 mm (1.0 in)
1994104.1 mm (4.1 in)
199541.7 mm (1.6 in)
1996121.4 mm (4.8 in)
199788.6 mm (3.5 in)
199834.0 mm (1.3 in)
199971.6 mm (2.8 in)
200053.3 mm (2.1 in)
200166.0 mm (2.6 in)
200263.8 mm (2.5 in)
200346.5 mm (1.8 in)
2004140.0 mm (5.5 in)
200588.9 mm (3.5 in)
200688.9 mm (3.5 in)
200782.0 mm (3.2 in)
2008191.0 mm (7.5 in)
200963.5 mm (2.5 in)
2010101.6 mm (4.0 in)
201191.4 mm (3.6 in)
201230.5 mm (1.2 in)
201362.2 mm (2.4 in)
201483.6 mm (3.3 in)
201553.6 mm (2.1 in)
201682.6 mm (3.3 in)
201776.7 mm (3.0 in)
201852.8 mm (2.1 in)
201955.9 mm (2.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Waianae 798 by year The wettest five days of the year at Waianae 798, 1905 to 2019. The record is 482.6 mm (19.0 in) in 1976, marked on the chart; the median year is 103.5 mm (4.1 in). 020040060019201940196019802000Record: 482.6 mm (19.0 in) in 1976
The wettest five days of the year at Waianae 798, 1905 to 2019. The record is 482.6 mm (19.0 in) in 1976, marked on the chart; the median year is 103.5 mm (4.1 in).
Wettest five days (Rx5day) at Waianae 798 by year
YearWettest five days (Rx5day)
190540.6 mm (1.6 in)
1906157.2 mm (6.2 in)
1907169.7 mm (6.7 in)
1908184.2 mm (7.3 in)
1909109.4 mm (4.3 in)
1910119.3 mm (4.7 in)
191146.2 mm (1.8 in)
191248.8 mm (1.9 in)
191389.2 mm (3.5 in)
191487.5 mm (3.4 in)
1915308.7 mm (12.2 in)
1916113.0 mm (4.4 in)
1917116.1 mm (4.6 in)
1918262.8 mm (10.3 in)
191943.5 mm (1.7 in)
1920207.8 mm (8.2 in)
192183.8 mm (3.3 in)
192262.7 mm (2.5 in)
1923136.7 mm (5.4 in)
1924212.4 mm (8.4 in)
192539.9 mm (1.6 in)
192641.4 mm (1.6 in)
1927278.3 mm (11.0 in)
192857.9 mm (2.3 in)
1929104.1 mm (4.1 in)
193087.9 mm (3.5 in)
193158.5 mm (2.3 in)
1932159.0 mm (6.3 in)
1933193.7 mm (7.6 in)
193463.0 mm (2.5 in)
193598.1 mm (3.9 in)
1936131.3 mm (5.2 in)
1937115.3 mm (4.5 in)
1938160.1 mm (6.3 in)
1939332.3 mm (13.1 in)
194099.8 mm (3.9 in)
194155.1 mm (2.2 in)
1942112.4 mm (4.4 in)
1943100.1 mm (3.9 in)
194491.0 mm (3.6 in)
1945163.2 mm (6.4 in)
1946102.4 mm (4.0 in)
194732.3 mm (1.3 in)
1948141.2 mm (5.6 in)
1949265.3 mm (10.4 in)
195052.6 mm (2.1 in)
1951109.0 mm (4.3 in)
195255.4 mm (2.2 in)
195326.7 mm (1.1 in)
1954255.5 mm (10.1 in)
1955232.7 mm (9.2 in)
195667.4 mm (2.7 in)
195775.5 mm (3.0 in)
1958170.2 mm (6.7 in)
195952.3 mm (2.1 in)
196031.5 mm (1.2 in)
196159.7 mm (2.4 in)
1962160.1 mm (6.3 in)
1963120.1 mm (4.7 in)
1964119.2 mm (4.7 in)
1965233.0 mm (9.2 in)
196697.3 mm (3.8 in)
1967109.0 mm (4.3 in)
1968139.5 mm (5.5 in)
196957.5 mm (2.3 in)
197030.0 mm (1.2 in)
1971132.6 mm (5.2 in)
1972101.9 mm (4.0 in)
197366.0 mm (2.6 in)
1974103.8 mm (4.1 in)
1975266.7 mm (10.5 in)
1976482.6 mm (19.0 in)
1977122.5 mm (4.8 in)
1978235.5 mm (9.3 in)
1979101.6 mm (4.0 in)
198060.5 mm (2.4 in)
1981173.5 mm (6.8 in)
1982335.5 mm (13.2 in)
198339.9 mm (1.6 in)
1984167.1 mm (6.6 in)
1985120.4 mm (4.7 in)
198674.4 mm (2.9 in)
1987162.3 mm (6.4 in)
1988136.9 mm (5.4 in)
1989385.5 mm (15.2 in)
199075.9 mm (3.0 in)
199144.7 mm (1.8 in)
1992105.4 mm (4.1 in)
199333.1 mm (1.3 in)
1994188.6 mm (7.4 in)
199554.5 mm (2.1 in)
1996452.9 mm (17.8 in)
199793.4 mm (3.7 in)
199834.0 mm (1.3 in)
1999136.1 mm (5.4 in)
200058.4 mm (2.3 in)
200181.7 mm (3.2 in)
2002103.5 mm (4.1 in)
200382.9 mm (3.3 in)
2004253.5 mm (10.0 in)
200591.4 mm (3.6 in)
2006160.8 mm (6.3 in)
2007100.8 mm (4.0 in)
2008272.1 mm (10.7 in)
200986.4 mm (3.4 in)
2010106.7 mm (4.2 in)
2011140.0 mm (5.5 in)
201265.8 mm (2.6 in)
201363.8 mm (2.5 in)
201497.9 mm (3.9 in)
2015104.3 mm (4.1 in)
201693.3 mm (3.7 in)
201790.2 mm (3.6 in)
201870.4 mm (2.8 in)
201972.5 mm (2.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Waianae 798 by year The longest dry spell of the year at Waianae 798, 1905 to 2019. The record is 134 days in 1908, marked on the chart; the median year is 49 days. 05010015019201940196019802000Record: 134 days in 1908
The longest dry spell of the year at Waianae 798, 1905 to 2019. The record is 134 days in 1908, marked on the chart; the median year is 49 days.
Longest dry spell (CDD) at Waianae 798 by year
YearLongest dry spell (CDD)
190541 days
190653 days
190738 days
1908134 days
190947 days
191068 days
191150 days
191245 days
191339 days
191437 days
191544 days
191641 days
191729 days
191865 days
191932 days
192045 days
192153 days
192267 days
1923102 days
192463 days
192543 days
192648 days
192739 days
192857 days
192938 days
193066 days
193142 days
193227 days
193388 days
193441 days
193539 days
193664 days
193764 days
193839 days
193942 days
194049 days
194164 days
194231 days
194364 days
194474 days
194540 days
194668 days
194746 days
194840 days
194991 days
195061 days
195142 days
195255 days
195388 days
195445 days
195564 days
195664 days
195793 days
195874 days
195945 days
196084 days
196145 days
196281 days
196345 days
196484 days
196547 days
196664 days
196734 days
196868 days
19696 days
197054 days
197143 days
197266 days
197340 days
197446 days
197577 days
197662 days
197774 days
197854 days
197983 days
198070 days
198147 days
198227 days
198350 days
198485 days
198535 days
198633 days
198743 days
198854 days
198950 days
199054 days
199141 days
199237 days
199365 days
199458 days
199543 days
199638 days
199733 days
199846 days
199944 days
200055 days
200162 days
200265 days
200356 days
200429 days
200585 days
200676 days
200739 days
200843 days
200976 days
201074 days
201182 days
2012118 days
201337 days
201447 days
201530 days
201660 days
201737 days
201845 days
201939 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

107 years, 1905 to 2017

A day with at least 71.2 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 270.0 mm (10.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Waianae 798: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years71.2 mm (2.8 in)
5 years111.8 mm (4.4 in)
10 years143.2 mm (5.6 in)
25 years188.6 mm (7.4 in)
50 years227.2 mm (8.9 in)
100 years270.0 mm (10.6 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 107 years of values from 1905 to 2017.

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: 257.0 mm (10.1 in) in 1989; 254.5 mm (10.0 in) in 1954; 248.7 mm (9.8 in) in 1976.

Download the Data

  • Data for Waianae 798 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Waianae 798 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).