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Honomanu 450 Weather Records (USC00511930)

Record envelope, standing records and threshold days for Honomanu 450 (USC00511930), Hawaii, United States, with 57 years of record.

Key Facts for Honomanu 450

  • Honomanu 450 (USC00511930) is a weather station in Hawaii, United States at 20.85 latitude and -156.18 longitude, 390 m (1,280 ft) above sea level.
  • The station reports from 1905 to 1961, 57 years of record.
  • 1,464 records set at Honomanu 450 still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Honomanu 450 set a daily record precipitation of 99.1 mm (3.9 in) on 12 August 1949.

About the Station

  • Location: Hawaii, United States, 20.85 latitude, -156.18 longitude.
  • Elevation: 390 m (1,280 ft).
  • Period of record: 1905 to 1961, 57 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Honomanu 450, with 2026 drawn through them The band shows the record high and record low for each calendar day at Honomanu 450. 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 Honomanu 450. 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 Honomanu 450, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan29.4 C (84.9 F)8.3 C (46.9 F)n/an/a
Feb29.4 C (84.9 F)7.2 C (45.0 F)n/an/a
Mar28.3 C (82.9 F)6.1 C (43.0 F)n/an/a
Apr29.4 C (84.9 F)10.6 C (51.1 F)n/an/a
May29.4 C (84.9 F)11.7 C (53.1 F)n/an/a
Jun29.4 C (84.9 F)10.6 C (51.1 F)n/an/a
Jul30.6 C (87.1 F)11.1 C (52.0 F)n/an/a
Aug31.1 C (88.0 F)13.3 C (55.9 F)n/an/a
Sep32.8 C (91.0 F)11.7 C (53.1 F)n/an/a
Oct29.4 C (84.9 F)11.7 C (53.1 F)n/an/a
Nov30.6 C (87.1 F)12.2 C (54.0 F)n/an/a
Dec29.4 C (84.9 F)8.9 C (48.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Honomanu 450 by the year they were set 1,464 records at Honomanu 450 still stand. 1905 holds the most, with 374. 01002003004001905: 3741906: 821907: 761908: 221909: 181910: 361911: 161912: 241913: 181914: 211915: 401916: 271917: 161918: 181919: 121920: 121921: 111922: 41923: 171924: 141925: 101926: 251927: 161928: 201929: 301930: 301931: 271932: 311933: 91934: 71935: 51936: 81937: 151938: 131939: 121940: 1051941: 371942: 671943: 241944: 271945: 88190519101915192019251930193519401945
1,464 records at Honomanu 450 still stand. 1905 holds the most, with 374.
Standing records at Honomanu 450 by the year they were set
Year setStanding records
1905374
190682
190776
190822
190918
191036
191116
191224
191318
191421
191540
191627
191716
191818
191912
192012
192111
19224
192317
192414
192510
192625
192716
192820
192930
193030
193127
193231
19339
19347
19355
19368
193715
193813
193912
1940105
194137
194267
194324
194427
194588

All-Time Record Progression

1 new records
When Honomanu 450 set new all-time records 1 all-time records were set at Honomanu 450 between 30 January 1948 and 30 January 1948. Each dot is a new record. Record daily precipitation30 January 1948: Record daily precipitation 546.1 mm (21.5 in)
1 all-time records were set at Honomanu 450 between 30 January 1948 and 30 January 1948. Each dot is a new record.
When Honomanu 450 set new all-time records
DateKindDetail
1948-01-30Record daily precipitationRecord daily precipitation 546.1 mm (21.5 in)

Wettest Day of Each Month

Jan: 546.1 mm (21.5 in)
Record daily precipitation for each month at Honomanu 450 The wettest day on record for each calendar month at Honomanu 450. The most was 546.1 mm (21.5 in) on 30 January 1948. 0200400600 Jan: 546.1 mm (21.5 in), 30 January 1948 Jan Feb: 355.3 mm (14.0 in), 9 February 1918 Feb Mar: 533.9 mm (21.0 in), 11 March 1909 Mar Apr: 446.0 mm (17.6 in), 3 April 1918 Apr May: 272.0 mm (10.7 in), 14 May 1924 May Jun: 131.3 mm (5.2 in), 6 June 1935 Jun Jul: 196.1 mm (7.7 in), 10 July 1918 Jul Aug: 284.2 mm (11.2 in), 15 August 1907 Aug Sep: 227.1 mm (8.9 in), 26 September 1924 Sep Oct: 228.6 mm (9.0 in), 27 October 1941 Oct Nov: 517.7 mm (20.4 in), 21 November 1924 Nov Dec: 464.8 mm (18.3 in), 6 December 1910 Dec
The wettest day on record for each calendar month at Honomanu 450. The most was 546.1 mm (21.5 in) on 30 January 1948.
Record daily precipitation for each month at Honomanu 450
MonthRecord daily precipitation (mm)Date
Jan546.1 mm (21.5 in)30 January 1948
Feb355.3 mm (14.0 in)9 February 1918
Mar533.9 mm (21.0 in)11 March 1909
Apr446.0 mm (17.6 in)3 April 1918
May272.0 mm (10.7 in)14 May 1924
Jun131.3 mm (5.2 in)6 June 1935
Jul196.1 mm (7.7 in)10 July 1918
Aug284.2 mm (11.2 in)15 August 1907
Sep227.1 mm (8.9 in)26 September 1924
Oct228.6 mm (9.0 in)27 October 1941
Nov517.7 mm (20.4 in)21 November 1924
Dec464.8 mm (18.3 in)6 December 1910

Period of Record Coverage

1905 to 1945
Days with data per year at Honomanu 450 41 years of record at Honomanu 450, 1905 to 1945. 1 years have data for under 90 percent of days and are left out of rankings: 1943. 1905: 350 of 365 days1906: 364 of 365 days1907: 364 of 365 days1908: 366 of 366 days1909: 365 of 365 days1910: 363 of 365 days1911: 362 of 365 days1912: 362 of 366 days1913: 362 of 365 days1914: 365 of 365 days1915: 363 of 365 days1916: 363 of 366 days1917: 333 of 365 days1918: 352 of 365 days1919: 363 of 365 days1920: 365 of 366 days1921: 365 of 365 days1922: 365 of 365 days1923: 365 of 365 days1924: 366 of 366 days1925: 365 of 365 days1926: 364 of 365 days1927: 355 of 365 days1928: 354 of 366 days1929: 360 of 365 days1930: 362 of 365 days1931: 362 of 365 days1932: 362 of 366 days1933: 329 of 365 days1934: 363 of 365 days1935: 364 of 365 days1936: 364 of 366 days1937: 364 of 365 days1938: 364 of 365 days1939: 365 of 365 days1940: 363 of 366 days1941: 351 of 365 days1942: 355 of 365 days1943: 314 of 365 days1944: 359 of 366 days1945: 345 of 365 days1910192019301940
41 years of record at Honomanu 450, 1905 to 1945. 1 years have data for under 90 percent of days and are left out of rankings: 1943.
Days with data per year at Honomanu 450
YearDays with dataShare of yearComplete
190535096%Yes
1906364100%Yes
1907364100%Yes
1908366100%Yes
1909365100%Yes
191036399%Yes
191136299%Yes
191236299%Yes
191336299%Yes
1914365100%Yes
191536399%Yes
191636399%Yes
191733391%Yes
191835296%Yes
191936399%Yes
1920365100%Yes
1921365100%Yes
1922365100%Yes
1923365100%Yes
1924366100%Yes
1925365100%Yes
1926364100%Yes
192735597%Yes
192835497%Yes
192936099%Yes
193036299%Yes
193136299%Yes
193236299%Yes
193332990%Yes
193436399%Yes
1935364100%Yes
193636499%Yes
1937364100%Yes
1938364100%Yes
1939365100%Yes
194036399%Yes
194135196%Yes
194235597%Yes
194331486%No
194435998%Yes
194534595%Yes

Latest Records

20
Latest records at Honomanu 450
DateStationRecordValueBeat old record byOld record stoodSignificance
12 August 1949Honomanu 450, USdaily rain99.1 mm (3.9 in)16.0 mm (0.6 in)36 years20 of 100 (Routine)
29 July 1949Honomanu 450, USdaily rain104.6 mm (4.1 in)11.1 mm (0.4 in)35 years19 of 100 (Routine)
8 July 1949Honomanu 450, USdaily rain75.7 mm (3.0 in)24.9 mm (1.0 in)6 years17 of 100 (Routine)
17 June 1949Honomanu 450, USdaily rain65.5 mm (2.6 in)2.5 mm (0.10 in)7 years7 of 100 (Routine)
29 April 1949Honomanu 450, USdaily rain188.7 mm (7.4 in)9.1 mm (0.36 in)32 years15 of 100 (Routine)
18 March 1949Honomanu 450, USdaily rain139.4 mm (5.5 in)55.3 mm (2.2 in)12 years20 of 100 (Routine)
31 December 1948Honomanu 450, USdaily rain251.7 mm (9.9 in)112.8 mm (4.4 in)12 years33 of 100 (Routine)
24 December 1948Honomanu 450, USdaily rain205.7 mm (8.1 in)23.6 mm (0.9 in)27 years17 of 100 (Routine)
30 November 1948Honomanu 450, USdaily rain167.6 mm (6.6 in)48.5 mm (1.9 in)28 years26 of 100 (Routine)
11 November 1948Honomanu 450, USdaily rain69.9 mm (2.8 in)2.6 mm (0.10 in)4 years5 of 100 (Routine)
29 October 1948Honomanu 450, USdaily rain130.6 mm (5.1 in)60.2 mm (2.4 in)18 years35 of 100 (Notable)
8 October 1948Honomanu 450, USdaily rain84.1 mm (3.3 in)29.5 mm (1.2 in)11 years20 of 100 (Routine)
19 August 1948Honomanu 450, USdaily rain124.7 mm (4.9 in)34.8 mm (1.4 in)17 years22 of 100 (Routine)
23 July 1948Honomanu 450, USdaily rain109.2 mm (4.3 in)28.2 mm (1.1 in)30 years27 of 100 (Routine)
9 July 1948Honomanu 450, USdaily rain121.7 mm (4.8 in)76.7 mm (3.0 in)36 years53 of 100 (Notable)
4 June 1948Honomanu 450, USdaily rain70.4 mm (2.8 in)13.8 mm (0.5 in)23 years17 of 100 (Routine)
16 April 1948Honomanu 450, USdaily rain236.2 mm (9.3 in)131.6 mm (5.2 in)33 years48 of 100 (Notable)
9 April 1948Honomanu 450, USdaily rain381.0 mm (15.0 in)224.3 mm (8.8 in)30 years53 of 100 (Notable)
30 March 1948Honomanu 450, USdaily rain224.8 mm (8.9 in)100.8 mm (4.0 in)27 years36 of 100 (Notable)
26 March 1948Honomanu 450, USdaily rain275.6 mm (10.9 in)116.1 mm (4.6 in)42 years44 of 100 (Notable)

Climate Trend

32 complete years, 1906 to 1944
Annual mean temperature at Honomanu 450 as warming stripes, 1906 to 1944 One stripe for each of 32 complete years at Honomanu 450, 1906 to 1944. Blue stripes are years cooler than the station's own mean of 19.4 C (66.9 F); red stripes are warmer. The coolest year was 1906, at 18.1 C (64.6 F), and the warmest was 1940, at 21.2 C (70.1 F). The strongest colour marks a difference of 1.8 C (3.2 F). 1906: 18.1 C, -1.3 C from the station mean1907: 20.2 C, +0.8 C from the station mean1908: 18.7 C, -0.8 C from the station mean1909: 18.6 C, -0.8 C from the station mean1910: 18.7 C, -0.7 C from the station mean1911: 18.6 C, -0.8 C from the station mean1912: 18.9 C, -0.6 C from the station mean1913: 19.2 C, -0.2 C from the station mean1914: 18.7 C, -0.8 C from the station mean1915: 19.1 C, -0.3 C from the station mean1916: 18.9 C, -0.5 C from the station mean1918: 19.2 C, -0.2 C from the station mean1919: 19.4 C, 0.0 C from the station mean1920: 19.6 C, +0.1 C from the station mean1921: 19.4 C, 0.0 C from the station mean1922: 19.3 C, -0.1 C from the station mean1923: 19.6 C, +0.2 C from the station mean1924: 19.6 C, +0.2 C from the station mean1925: 19.4 C, 0.0 C from the station mean1926: 19.7 C, +0.3 C from the station mean1927: 19.9 C, +0.5 C from the station mean1928: 19.9 C, +0.5 C from the station mean1929: 19.9 C, +0.5 C from the station mean1932: 19.6 C, +0.2 C from the station mean1934: 19.7 C, +0.3 C from the station mean1935: 19.5 C, +0.1 C from the station mean1936: 19.1 C, -0.3 C from the station mean1937: 18.8 C, -0.6 C from the station mean1939: 19.9 C, +0.5 C from the station mean1940: 21.2 C, +1.7 C from the station mean1942: 20.7 C, +1.3 C from the station mean1944: 20.2 C, +0.8 C from the station mean19061910191519201925193019351940
One stripe for each of 32 complete years at Honomanu 450, 1906 to 1944. Blue stripes are years cooler than the station's own mean of 19.4 C (66.9 F); red stripes are warmer. The coolest year was 1906, at 18.1 C (64.6 F), and the warmest was 1940, at 21.2 C (70.1 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Honomanu 450 as warming stripes, 1906 to 1944
YearAnnual mean temperatureDifference from the station mean
190618.1 C-1.28 C
190720.2 C+0.76 C
190818.7 C-0.75 C
190918.6 C-0.84 C
191018.7 C-0.68 C
191118.6 C-0.80 C
191218.9 C-0.55 C
191319.2 C-0.22 C
191418.7 C-0.76 C
191519.1 C-0.32 C
191618.9 C-0.53 C
191819.2 C-0.17 C
191919.4 C-0.04 C
192019.6 C+0.14 C
192119.4 C-0.03 C
192219.3 C-0.11 C
192319.6 C+0.21 C
192419.6 C+0.18 C
192519.4 C+0.02 C
192619.7 C+0.29 C
192719.9 C+0.49 C
192819.9 C+0.47 C
192919.9 C+0.53 C
193219.6 C+0.21 C
193419.7 C+0.31 C
193519.5 C+0.10 C
193619.1 C-0.29 C
193718.8 C-0.62 C
193919.9 C+0.48 C
194021.2 C+1.75 C
194220.7 C+1.28 C
194420.2 C+0.80 C

The annual mean temperature here has risen by 0.4 C (0.2 to 0.6) per decade over 1906 to 1944. In Fahrenheit: 0.7 F (0.4 to 1.0) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Honomanu 450
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.4 C (0.2 to 0.6) per decade0.7 F (0.4 to 1.0) per decade1906 to 194432Rise
Mean daily maximum0.4 C (0.1 to 0.6) per decade0.6 F (0.3 to 1.0) per decade1906 to 194432Rise
Mean daily minimum0.4 C (0.3 to 0.6) per decade0.8 F (0.5 to 1.0) per decade1906 to 194432Rise

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 1961
Yearly extremes at Honomanu 450: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)32.8 C (91.0 F)191028.3 C (82.9 F)41
Coldest night (TNn)6.1 C (43.0 F)190610.6 C (51.1 F)41
Wettest day (Rx1day)546.1 mm (21.5 in)1948223.5 mm (8.8 in)53
Wettest five days (Rx5day)981.8 mm (38.7 in)1910470.8 mm (18.5 in)47
Longest dry spell (CDD)17 days19459 days50

Hottest day (TXx)

Hottest day (TXx) at Honomanu 450 by year The hottest day of the year at Honomanu 450, 1905 to 1961. The record is 32.8 C (91.0 F) in 1910, marked on the chart; the median year is 28.3 C (82.9 F). 242628303234191019201930194019501960Record: 32.8 C (91.0 F) in 1910
The hottest day of the year at Honomanu 450, 1905 to 1961. The record is 32.8 C (91.0 F) in 1910, marked on the chart; the median year is 28.3 C (82.9 F).
Hottest day (TXx) at Honomanu 450 by year
YearHottest day (TXx)
190530.6 C (87.1 F)
190630.0 C (86.0 F)
190730.6 C (87.1 F)
190826.1 C (79.0 F)
190927.2 C (81.0 F)
191032.8 C (91.0 F)
191127.8 C (82.0 F)
191230.0 C (86.0 F)
191331.1 C (88.0 F)
191429.4 C (84.9 F)
191527.8 C (82.0 F)
191626.1 C (79.0 F)
191725.6 C (78.1 F)
191826.1 C (79.0 F)
191928.3 C (82.9 F)
192026.1 C (79.0 F)
192128.3 C (82.9 F)
192225.6 C (78.1 F)
192328.9 C (84.0 F)
192427.2 C (81.0 F)
192528.3 C (82.9 F)
192627.8 C (82.0 F)
192729.4 C (84.9 F)
192828.3 C (82.9 F)
192928.9 C (84.0 F)
193026.7 C (80.1 F)
193127.2 C (81.0 F)
193226.7 C (80.1 F)
193330.6 C (87.1 F)
193426.1 C (79.0 F)
193526.7 C (80.1 F)
193626.7 C (80.1 F)
193726.1 C (79.0 F)
193828.3 C (82.9 F)
193928.9 C (84.0 F)
194029.4 C (84.9 F)
194128.3 C (82.9 F)
194228.9 C (84.0 F)
194328.9 C (84.0 F)
194427.8 C (82.0 F)
194527.2 C (81.0 F)
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a

Coldest night (TNn)

Coldest night (TNn) at Honomanu 450 by year The coldest night of the year at Honomanu 450, 1905 to 1961. The record is 6.1 C (43.0 F) in 1906, marked on the chart; the median year is 10.6 C (51.1 F). 68101214191019201930194019501960Record: 6.1 C (43.0 F) in 1906
The coldest night of the year at Honomanu 450, 1905 to 1961. The record is 6.1 C (43.0 F) in 1906, marked on the chart; the median year is 10.6 C (51.1 F).
Coldest night (TNn) at Honomanu 450 by year
YearColdest night (TNn)
19058.9 C (48.0 F)
19066.1 C (43.0 F)
190712.2 C (54.0 F)
190812.2 C (54.0 F)
190910.6 C (51.1 F)
191011.1 C (52.0 F)
191110.6 C (51.1 F)
191210.6 C (51.1 F)
19138.3 C (46.9 F)
191410.6 C (51.1 F)
19159.4 C (48.9 F)
19167.2 C (45.0 F)
19178.9 C (48.0 F)
191810.6 C (51.1 F)
191910.6 C (51.1 F)
192011.1 C (52.0 F)
192111.7 C (53.1 F)
192210.0 C (50.0 F)
192310.0 C (50.0 F)
192411.1 C (52.0 F)
192512.2 C (54.0 F)
192610.6 C (51.1 F)
192711.1 C (52.0 F)
192812.2 C (54.0 F)
192910.0 C (50.0 F)
193011.1 C (52.0 F)
193111.1 C (52.0 F)
193210.6 C (51.1 F)
193310.6 C (51.1 F)
193411.7 C (53.1 F)
193510.0 C (50.0 F)
193610.0 C (50.0 F)
19378.9 C (48.0 F)
193812.8 C (55.0 F)
193913.9 C (57.0 F)
194012.2 C (54.0 F)
194111.7 C (53.1 F)
194211.7 C (53.1 F)
194310.0 C (50.0 F)
194410.6 C (51.1 F)
194513.9 C (57.0 F)
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Honomanu 450 by year The wettest day of the year at Honomanu 450, 1905 to 1961. The record is 546.1 mm (21.5 in) in 1948, marked on the chart; the median year is 223.5 mm (8.8 in). 0200400600191019201930194019501960Record: 546.1 mm (21.5 in) in 1948
The wettest day of the year at Honomanu 450, 1905 to 1961. The record is 546.1 mm (21.5 in) in 1948, marked on the chart; the median year is 223.5 mm (8.8 in).
Wettest day (Rx1day) at Honomanu 450 by year
YearWettest day (Rx1day)
1905197.1 mm (7.8 in)
1906348.0 mm (13.7 in)
1907284.2 mm (11.2 in)
1908169.2 mm (6.7 in)
1909533.9 mm (21.0 in)
1910464.8 mm (18.3 in)
1911241.6 mm (9.5 in)
1912206.2 mm (8.1 in)
1913113.3 mm (4.5 in)
1914234.2 mm (9.2 in)
1915245.4 mm (9.7 in)
1916257.0 mm (10.1 in)
1917179.6 mm (7.1 in)
1918446.0 mm (17.6 in)
1919182.4 mm (7.2 in)
1920352.6 mm (13.9 in)
1921380.0 mm (15.0 in)
1922453.6 mm (17.9 in)
1923251.5 mm (9.9 in)
1924517.7 mm (20.4 in)
1925124.5 mm (4.9 in)
1926289.6 mm (11.4 in)
1927471.9 mm (18.6 in)
1928232.7 mm (9.2 in)
1929250.7 mm (9.9 in)
1930223.5 mm (8.8 in)
1931162.6 mm (6.4 in)
1932290.1 mm (11.4 in)
1933195.6 mm (7.7 in)
1934173.7 mm (6.8 in)
1935235.7 mm (9.3 in)
1936206.2 mm (8.1 in)
1937156.0 mm (6.1 in)
1938274.8 mm (10.8 in)
1939196.6 mm (7.7 in)
1940174.0 mm (6.9 in)
1941228.6 mm (9.0 in)
1942320.0 mm (12.6 in)
1943141.2 mm (5.6 in)
1944111.8 mm (4.4 in)
1945115.6 mm (4.6 in)
1946440.9 mm (17.4 in)
1947292.1 mm (11.5 in)
1948546.1 mm (21.5 in)
1949188.7 mm (7.4 in)
195055.1 mm (2.2 in)
195122.1 mm (0.9 in)
195250.0 mm (2.0 in)
19530.0 mm (0.00 in)
195415.0 mm (0.6 in)
19551.3 mm (0.05 in)
19566.4 mm (0.25 in)
19572.5 mm (0.10 in)
1958n/a
1959n/a
1960n/a
1961n/a

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Honomanu 450 by year The wettest five days of the year at Honomanu 450, 1905 to 1961. The record is 981.8 mm (38.7 in) in 1910, marked on the chart; the median year is 470.8 mm (18.5 in). 02505007501,000191019201930194019501960Record: 981.8 mm (38.7 in) in 1910
The wettest five days of the year at Honomanu 450, 1905 to 1961. The record is 981.8 mm (38.7 in) in 1910, marked on the chart; the median year is 470.8 mm (18.5 in).
Wettest five days (Rx5day) at Honomanu 450 by year
YearWettest five days (Rx5day)
1905280.3 mm (11.0 in)
1906472.0 mm (18.6 in)
1907563.8 mm (22.2 in)
1908489.5 mm (19.3 in)
1909907.5 mm (35.7 in)
1910981.8 mm (38.7 in)
1911517.7 mm (20.4 in)
1912420.0 mm (16.5 in)
1913373.6 mm (14.7 in)
1914572.9 mm (22.6 in)
1915398.0 mm (15.7 in)
1916595.6 mm (23.4 in)
1917282.5 mm (11.1 in)
1918969.5 mm (38.2 in)
1919325.2 mm (12.8 in)
1920885.7 mm (34.9 in)
1921768.4 mm (30.3 in)
1922854.4 mm (33.6 in)
1923619.4 mm (24.4 in)
1924632.4 mm (24.9 in)
1925339.1 mm (13.4 in)
1926326.2 mm (12.8 in)
1927652.0 mm (25.7 in)
1928439.3 mm (17.3 in)
1929528.4 mm (20.8 in)
1930517.5 mm (20.4 in)
1931385.6 mm (15.2 in)
1932635.5 mm (25.0 in)
1933272.0 mm (10.7 in)
1934360.4 mm (14.2 in)
1935556.0 mm (21.9 in)
1936470.8 mm (18.5 in)
1937532.8 mm (21.0 in)
1938666.2 mm (26.2 in)
1939318.7 mm (12.5 in)
1940273.7 mm (10.8 in)
1941344.5 mm (13.6 in)
1942932.2 mm (36.7 in)
1943347.2 mm (13.7 in)
1944308.6 mm (12.1 in)
1945259.1 mm (10.2 in)
1946454.1 mm (17.9 in)
1947292.1 mm (11.5 in)
1948570.2 mm (22.4 in)
1949251.7 mm (9.9 in)
195055.1 mm (2.2 in)
19510.0 mm (0.00 in)
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Honomanu 450 by year The longest dry spell of the year at Honomanu 450, 1905 to 1961. The record is 17 days in 1945, marked on the chart; the median year is 9 days. 05101520191019201930194019501960Record: 17 days in 1945
The longest dry spell of the year at Honomanu 450, 1905 to 1961. The record is 17 days in 1945, marked on the chart; the median year is 9 days.
Longest dry spell (CDD) at Honomanu 450 by year
YearLongest dry spell (CDD)
190510 days
190610 days
19079 days
190810 days
190912 days
19109 days
19114 days
191214 days
19137 days
191411 days
19156 days
19165 days
191714 days
19188 days
191912 days
192016 days
192113 days
19228 days
19237 days
192416 days
192514 days
19267 days
19274 days
19285 days
19297 days
193013 days
19318 days
19326 days
193310 days
193410 days
19359 days
19367 days
19378 days
19388 days
19394 days
194010 days
19418 days
194210 days
194312 days
194410 days
194517 days
19467 days
194713 days
19487 days
194910 days
19506 days
19517 days
1952n/a
19532 days
19543 days
1955n/a
1956n/a
19573 days
1958n/a
1959n/a
1960n/a
1961n/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

44 years, 1905 to 1948

A day with at least 244.9 mm (9.6 in) of rain is expected about once in 2 years. A day with at least 706.1 mm (27.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Honomanu 450: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years244.9 mm (9.6 in)
5 years353.5 mm (13.9 in)
10 years431.0 mm (17.0 in)
25 years535.8 mm (21.1 in)
50 years618.9 mm (24.4 in)Longer than the 44 years of record
100 years706.1 mm (27.8 in)Longer than the 44 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, 44 years of values from 1905 to 1948.

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: 546.1 mm (21.5 in) in 1948; 533.9 mm (21.0 in) in 1909; 517.7 mm (20.4 in) in 1924.

Download the Data

  • Data for Honomanu 450 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Honomanu 450 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

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