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Built 2026-10-18 (18 October 2026)

Hachijojima Weather Records (JA000047678)

Record envelope, standing records and threshold days for Hachijojima (JA000047678), Japan, with 76 years of record.

Key Facts for Hachijojima

  • Hachijojima (JA000047678) is a weather station in Japan at 33.12 latitude and 139.78 longitude, 80 m (262 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Hachijojima still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Hachijojima set a daily record precipitation of 231.5 mm (9.1 in) on 4 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Japan, 33.12 latitude, 139.78 longitude.
  • Elevation: 80 m (262 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

5 days at or beyond a record
Daily record high and record low at Hachijojima, with 2026 drawn through them The band shows the record high and record low for each calendar day at Hachijojima. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Hachijojima. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Hachijojima, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan21.5 C (70.7 F)-1.8 C (28.8 F)17.5 C (63.5 F)3.7 C (38.7 F)
Feb21.9 C (71.4 F)-2.0 C (28.4 F)20.0 C (68.0 F)1.8 C (35.2 F)
Mar22.7 C (72.9 F)-1.9 C (28.6 F)18.6 C (65.5 F)7.0 C (44.6 F)
Apr26.3 C (79.3 F)4.5 C (40.1 F)23.6 C (74.5 F)9.2 C (48.6 F)
May27.4 C (81.3 F)8.7 C (47.7 F)26.1 C (79.0 F)13.6 C (56.5 F)
Jun30.4 C (86.7 F)13.6 C (56.5 F)26.1 C (79.0 F)16.9 C (62.4 F)
Jul32.9 C (91.2 F)15.6 C (60.1 F)31.6 C (88.9 F)20.9 C (69.6 F)
Aug33.5 C (92.3 F)18.6 C (65.5 F)32.0 C (89.6 F)21.8 C (71.2 F)
Sep33.2 C (91.8 F)15.0 C (59.0 F)30.4 C (86.7 F)19.4 C (66.9 F)
Oct29.9 C (85.8 F)12.0 C (53.6 F)28.9 C (84.0 F)20.1 C (68.2 F)
Nov26.3 C (79.3 F)2.1 C (35.8 F)n/an/a
Dec24.6 C (76.3 F)1.4 C (34.5 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Hachijojima by the year they were set 1,464 records at Hachijojima still stand. 1961 holds the most, with 38. 0102030401951: 231952: 221953: 241954: 281955: 201956: 321957: 221958: 201959: 341960: 171961: 381962: 151963: 321964: 181965: 231966: 201967: 241968: 211969: 291970: 291971: 251972: 211973: 321974: 161975: 141976: 251977: 301978: 171979: 211980: 271981: 291982: 361983: 261984: 271985: 131986: 161987: 301988: 221989: 111990: 111991: 121992: 161993: 161994: 161995: 211996: 181997: 231998: 351999: 182000: 72001: 72002: 162003: 112004: 102006: 112007: 72008: 142009: 162010: 242011: 132012: 82013: 132014: 72015: 232016: 172017: 122018: 262019: 102020: 102021: 72022: 122023: 42024: 72025: 372026: 201951195919671975198319911999200820162024
1,464 records at Hachijojima still stand. 1961 holds the most, with 38.
Standing records at Hachijojima by the year they were set
Year setStanding records
195123
195222
195324
195428
195520
195632
195722
195820
195934
196017
196138
196215
196332
196418
196523
196620
196724
196821
196929
197029
197125
197221
197332
197416
197514
197625
197730
197817
197921
198027
198129
198236
198326
198427
198513
198616
198730
198822
198911
199011
199112
199216
199316
199416
199521
199618
199723
199835
199918
20007
20017
200216
200311
200410
200611
20077
200814
200916
201024
201113
20128
201313
20147
201523
201617
201712
201826
201910
202010
20217
202212
20234
20247
202537
202620

All-Time Record Progression

5 new records
When Hachijojima set new all-time records 5 all-time records were set at Hachijojima between 26 February 1981 and 1 July 2026. Each dot is a new record. Record low minimum temperatureRecord high maximum temperatureRecord daily precipitation26 February 1981: Record low minimum temperature -0.3 C (31.5 F)27 February 1981: Record low minimum temperature -2.0 C (28.4 F)14 August 1984: Record high maximum temperature 33.3 C (91.9 F)31 August 2010: Record high maximum temperature 33.5 C (92.3 F)1 July 2026: Record daily precipitation 496.0 mm (19.5 in)1990200020102020
5 all-time records were set at Hachijojima between 26 February 1981 and 1 July 2026. Each dot is a new record.
When Hachijojima set new all-time records
DateKindDetail
1981-02-26Record low minimum temperatureRecord low minimum temperature -0.3 C (31.5 F)
1981-02-27Record low minimum temperatureRecord low minimum temperature -2.0 C (28.4 F)
1984-08-14Record high maximum temperatureRecord high maximum temperature 33.3 C (91.9 F)
2010-08-31Record high maximum temperatureRecord high maximum temperature 33.5 C (92.3 F)
2026-07-01Record daily precipitationRecord daily precipitation 496.0 mm (19.5 in)

Wettest Day of Each Month

Jul: 496.0 mm (19.5 in)
Record daily precipitation for each month at Hachijojima The wettest day on record for each calendar month at Hachijojima. The most was 496.0 mm (19.5 in) on 1 July 2026. 0200400600 Jan: 145.0 mm (5.7 in), 11 January 1972 Jan Feb: 166.1 mm (6.5 in), 3 February 2002 Feb Mar: 168.9 mm (6.6 in), 7 March 2016 Mar Apr: 310.0 mm (12.2 in), 13 April 1985 Apr May: 193.0 mm (7.6 in), 2 May 2012 May Jun: 242.1 mm (9.5 in), 18 June 1992 Jun Jul: 496.0 mm (19.5 in), 1 July 2026 Jul Aug: 340.2 mm (13.4 in), 29 August 1953 Aug Sep: 425.2 mm (16.7 in), 25 September 1965 Sep Oct: 397.5 mm (15.6 in), 8 October 1988 Oct Nov: 290.1 mm (11.4 in), 20 November 1993 Nov Dec: 173.5 mm (6.8 in), 28 December 1965 Dec
The wettest day on record for each calendar month at Hachijojima. The most was 496.0 mm (19.5 in) on 1 July 2026.
Record daily precipitation for each month at Hachijojima
MonthRecord daily precipitation (mm)Date
Jan145.0 mm (5.7 in)11 January 1972
Feb166.1 mm (6.5 in)3 February 2002
Mar168.9 mm (6.6 in)7 March 2016
Apr310.0 mm (12.2 in)13 April 1985
May193.0 mm (7.6 in)2 May 2012
Jun242.1 mm (9.5 in)18 June 1992
Jul496.0 mm (19.5 in)1 July 2026
Aug340.2 mm (13.4 in)29 August 1953
Sep425.2 mm (16.7 in)25 September 1965
Oct397.5 mm (15.6 in)8 October 1988
Nov290.1 mm (11.4 in)20 November 1993
Dec173.5 mm (6.8 in)28 December 1965

Period of Record Coverage

1951 to 2026
Days with data per year at Hachijojima 75 years of record at Hachijojima, 1951 to 2026. 32 years have data for under 90 percent of days and are left out of rankings: 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999 and others. 1951: 365 of 365 days1952: 366 of 366 days1953: 362 of 365 days1954: 363 of 365 days1955: 357 of 365 days1956: 359 of 366 days1957: 359 of 365 days1958: 360 of 365 days1959: 358 of 365 days1960: 358 of 366 days1961: 362 of 365 days1962: 358 of 365 days1963: 358 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: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 344 of 365 days1991: 336 of 365 days1992: 325 of 366 days1993: 317 of 365 days1994: 318 of 365 days1995: 327 of 365 days1996: 325 of 366 days1997: 326 of 365 days1998: 318 of 365 days1999: 320 of 365 days2000: 328 of 366 days2001: 315 of 365 days2002: 316 of 365 days2003: 323 of 365 days2004: 325 of 366 days2006: 324 of 365 days2007: 327 of 365 days2008: 329 of 366 days2009: 329 of 365 days2010: 316 of 365 days2011: 326 of 365 days2012: 310 of 366 days2013: 103 of 365 days2014: 2 of 365 days2015: 265 of 365 days2016: 308 of 366 days2017: 306 of 365 days2018: 317 of 365 days2019: 316 of 365 days2020: 71 of 366 days2021: 5 of 365 days2022: 140 of 365 days2023: 6 of 365 days2024: 3 of 366 days2025: 358 of 365 days2026: 276 of 365 days1960197019801990200020102020
75 years of record at Hachijojima, 1951 to 2026. 32 years have data for under 90 percent of days and are left out of rankings: 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999 and others.
Days with data per year at Hachijojima
YearDays with dataShare of yearComplete
1951365100%Yes
1952366100%Yes
195336299%Yes
195436399%Yes
195535798%Yes
195635998%Yes
195735998%Yes
195836099%Yes
195935898%Yes
196035898%Yes
196136299%Yes
196235898%Yes
196335898%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
199034494%Yes
199133692%Yes
199232589%No
199331787%No
199431887%No
199532790%No
199632589%No
199732689%No
199831887%No
199932088%No
200032890%No
200131586%No
200231687%No
200332388%No
200432589%No
200632489%No
200732790%No
200832990%No
200932990%Yes
201031687%No
201132689%No
201231085%No
201310328%No
201421%No
201526573%No
201630884%No
201730684%No
201831787%No
201931687%No
20207119%No
202151%No
202214038%No
202362%No
202431%No
202535898%Yes
202627676%No

Latest Records

20
Latest records at Hachijojima
DateStationRecordValueBeat old record byOld record stoodSignificance
4 October 2026Hachijojima, JPdaily rain (Provisional)231.5 mm (9.1 in)124.5 mm (4.9 in)56 years52 of 100 (Notable)
28 September 2026Hachijojima, JPdaily high min (Provisional)25.1 C (77.2 F)0.3 C (0.5 F)36 years19 of 100 (Routine)
28 September 2026Hachijojima, JPdaily rain (Provisional)117.5 mm (4.6 in)12.3 mm (0.5 in)27 years18 of 100 (Routine)
9 September 2026Hachijojima, JPmonthly rain (Provisional)471.5 mm (18.6 in)46.3 mm (1.8 in)60 years47 of 100 (Notable)
8 September 2026Hachijojima, JPdaily rain (Provisional)285.0 mm (11.2 in)211.1 mm (8.3 in)32 years56 of 100 (Notable)
8 September 2026Hachijojima, JPdaily high min (Provisional)26.6 C (79.9 F)0.4 C (0.7 F)69 years28 of 100 (Routine)
3 September 2026Hachijojima, JPdaily rain (Provisional)355.0 mm (14.0 in)316.1 mm (12.4 in)24 years54 of 100 (Notable)
3 September 2026Hachijojima, JPdaily low min (Provisional)19.4 C (66.9 F)1.1 C (2.0 F)39 years23 of 100 (Routine)
16 August 2026Hachijojima, JPdaily rain155.5 mm (6.1 in)104.0 mm (4.1 in)56 years61 of 100 (Major)
14 August 2026Hachijojima, JPdaily rain178.5 mm (7.0 in)96.1 mm (3.8 in)65 years61 of 100 (Major)
1 August 2026Hachijojima, JPdaily high min27.0 C (80.6 F)0.3 C (0.5 F)31 years18 of 100 (Routine)
31 July 2026Hachijojima, JPdaily high min27.4 C (81.3 F)1.0 C (1.8 F)64 years31 of 100 (Routine)
30 July 2026Hachijojima, JPdaily high min27.6 C (81.7 F)0.8 C (1.4 F)1 year11 of 100 (Routine)
26 July 2026Hachijojima, JPall-time high min (Tie)27.9 C (82.2 F)tie69 years11 of 100 (Routine)
24 July 2026Hachijojima, JPmonthly high min27.4 C (81.3 F)0.2 C (0.4 F)34 years28 of 100 (Routine)
23 July 2026Hachijojima, JPdaily high max31.1 C (88.0 F)0.2 C (0.4 F)64 years27 of 100 (Routine)
23 July 2026Hachijojima, JPdaily high min26.6 C (79.9 F)0.2 C (0.4 F)35 years18 of 100 (Routine)
22 July 2026Hachijojima, JPmonthly high min (Tie)27.2 C (81.0 F)tie34 years6 of 100 (Routine)
21 July 2026Hachijojima, JPdaily high min27.1 C (80.8 F)0.5 C (0.9 F)1 year9 of 100 (Routine)
20 July 2026Hachijojima, JPdaily high min25.7 C (78.3 F)0.1 C (0.2 F)60 years25 of 100 (Routine)

Climate Trend

40 complete years, 1951 to 2025
Annual mean temperature at Hachijojima as warming stripes, 1951 to 2025 One stripe for each of 40 complete years at Hachijojima, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 18.3 C (65.0 F); red stripes are warmer. The coolest year was 1984, at 17.6 C (63.6 F), and the warmest was 1959, at 19.3 C (66.7 F). The strongest colour marks a difference of 1.0 C (1.8 F). 1951: 18.4 C, +0.1 C from the station mean1952: 18.7 C, +0.3 C from the station mean1953: 18.5 C, +0.1 C from the station mean1954: 18.9 C, +0.5 C from the station mean1955: 19.0 C, +0.7 C from the station mean1956: 18.6 C, +0.2 C from the station mean1957: 18.4 C, 0.0 C from the station mean1958: 18.8 C, +0.5 C from the station mean1959: 19.3 C, +0.9 C from the station mean1960: 18.8 C, +0.4 C from the station mean1961: 19.2 C, +0.9 C from the station mean1962: 18.4 C, +0.1 C from the station mean1963: 17.9 C, -0.5 C from the station mean1964: 18.6 C, +0.2 C from the station mean1965: 17.8 C, -0.5 C from the station mean1966: 18.4 C, +0.1 C from the station mean1967: 18.3 C, 0.0 C from the station mean1968: 17.9 C, -0.4 C from the station mean1969: 18.3 C, -0.1 C from the station mean1970: 17.7 C, -0.6 C from the station mean1971: 17.8 C, -0.6 C from the station mean1972: 18.2 C, -0.2 C from the station mean1973: 17.7 C, -0.7 C from the station mean1974: 17.8 C, -0.6 C from the station mean1975: 17.8 C, -0.5 C from the station mean1976: 18.1 C, -0.2 C from the station mean1977: 18.4 C, 0.0 C from the station mean1978: 18.5 C, +0.2 C from the station mean1979: 19.1 C, +0.7 C from the station mean1980: 18.1 C, -0.2 C from the station mean1981: 18.0 C, -0.3 C from the station mean1982: 18.0 C, -0.3 C from the station mean1983: 18.3 C, 0.0 C from the station mean1984: 17.6 C, -0.8 C from the station mean1985: 18.3 C, 0.0 C from the station mean1986: 17.9 C, -0.5 C from the station mean1987: 18.7 C, +0.4 C from the station mean1988: 17.9 C, -0.5 C from the station mean1989: 18.6 C, +0.2 C from the station mean2025: 19.1 C, +0.8 C from the station mean19511960197019801990200020102020
One stripe for each of 40 complete years at Hachijojima, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 18.3 C (65.0 F); red stripes are warmer. The coolest year was 1984, at 17.6 C (63.6 F), and the warmest was 1959, at 19.3 C (66.7 F). The strongest colour marks a difference of 1.0 C (1.8 F).
Annual mean temperature at Hachijojima as warming stripes, 1951 to 2025
YearAnnual mean temperatureDifference from the station mean
195118.4 C+0.11 C
195218.7 C+0.33 C
195318.5 C+0.13 C
195418.9 C+0.55 C
195519.0 C+0.66 C
195618.6 C+0.23 C
195718.4 C+0.04 C
195818.8 C+0.50 C
195919.3 C+0.93 C
196018.8 C+0.43 C
196119.2 C+0.89 C
196218.4 C+0.08 C
196317.9 C-0.46 C
196418.6 C+0.22 C
196517.8 C-0.53 C
196618.4 C+0.10 C
196718.3 C-0.03 C
196817.9 C-0.42 C
196918.3 C-0.07 C
197017.7 C-0.63 C
197117.8 C-0.58 C
197218.2 C-0.17 C
197317.7 C-0.65 C
197417.8 C-0.56 C
197517.8 C-0.50 C
197618.1 C-0.24 C
197718.4 C+0.03 C
197818.5 C+0.17 C
197919.1 C+0.74 C
198018.1 C-0.23 C
198118.0 C-0.30 C
198218.0 C-0.30 C
198318.3 C-0.01 C
198417.6 C-0.76 C
198518.3 C-0.03 C
198617.9 C-0.48 C
198718.7 C+0.37 C
198817.9 C-0.45 C
198918.6 C+0.24 C
202519.1 C+0.76 C

The fitted trend in annual mean temperature here over 1951 to 2025 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.3 to 0.1) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Hachijojima
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.1 C (-0.2 to 0.1) per decade-0.1 F (-0.3 to 0.1) per decade1951 to 202540Not clearly different from zero
Mean daily maximum-0.09 C (-0.19 to 0.01) per decade-0.17 F (-0.35 to 0.01) per decade1951 to 202540Not clearly different from zero
Mean daily minimum-0.01 C (-0.12 to 0.10) per decade-0.02 F (-0.22 to 0.19) per decade1951 to 202540Not 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

1951 to 2026
Yearly extremes at Hachijojima: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)33.5 C (92.3 F)201031.6 C (88.9 F)75
Coldest night (TNn)-2.0 C (28.4 F)19812.1 C (35.8 F)75
Wettest day (Rx1day)496.0 mm (19.5 in)2026175.3 mm (6.9 in)74
Wettest five days (Rx5day)1,132.0 mm (44.6 in)2026292.0 mm (11.5 in)71
Longest dry spell (CDD)31 days196511 days71

Hottest day (TXx)

Hottest day (TXx) at Hachijojima by year The hottest day of the year at Hachijojima, 1951 to 2026. The record is 33.5 C (92.3 F) in 2010, marked on the chart; the median year is 31.6 C (88.9 F). 22.52527.53032.5351960198020002020Record: 33.5 C (92.3 F) in 2010
The hottest day of the year at Hachijojima, 1951 to 2026. The record is 33.5 C (92.3 F) in 2010, marked on the chart; the median year is 31.6 C (88.9 F).
Hottest day (TXx) at Hachijojima by year
YearHottest day (TXx)
195132.5 C (90.5 F)
195232.2 C (90.0 F)
195333.2 C (91.8 F)
195431.3 C (88.3 F)
195531.4 C (88.5 F)
195632.1 C (89.8 F)
195731.7 C (89.1 F)
195832.1 C (89.8 F)
195932.1 C (89.8 F)
196031.2 C (88.2 F)
196132.7 C (90.9 F)
196231.4 C (88.5 F)
196330.0 C (86.0 F)
196431.6 C (88.9 F)
196531.5 C (88.7 F)
196631.7 C (89.1 F)
196732.0 C (89.6 F)
196830.0 C (86.0 F)
196932.9 C (91.2 F)
197031.2 C (88.2 F)
197130.9 C (87.6 F)
197230.2 C (86.4 F)
197330.6 C (87.1 F)
197430.3 C (86.5 F)
197530.8 C (87.4 F)
197630.6 C (87.1 F)
197731.3 C (88.3 F)
197833.2 C (91.8 F)
197931.2 C (88.2 F)
198030.9 C (87.6 F)
198131.0 C (87.8 F)
198230.7 C (87.3 F)
198331.8 C (89.2 F)
198433.3 C (91.9 F)
198531.7 C (89.1 F)
198630.9 C (87.6 F)
198730.7 C (87.3 F)
198831.2 C (88.2 F)
198931.3 C (88.3 F)
199032.9 C (91.2 F)
199132.3 C (90.1 F)
199230.7 C (87.3 F)
199330.3 C (86.5 F)
199432.0 C (89.6 F)
199532.5 C (90.5 F)
199631.3 C (88.3 F)
199732.5 C (90.5 F)
199831.3 C (88.3 F)
199931.6 C (88.9 F)
200030.7 C (87.3 F)
200131.6 C (88.9 F)
200231.1 C (88.0 F)
200331.9 C (89.4 F)
200431.5 C (88.7 F)
200631.4 C (88.5 F)
200731.7 C (89.1 F)
200832.4 C (90.3 F)
200932.3 C (90.1 F)
201033.5 C (92.3 F)
201131.6 C (88.9 F)
201231.7 C (89.1 F)
201327.5 C (81.5 F)
201428.3 C (82.9 F)
201532.8 C (91.0 F)
201632.4 C (90.3 F)
201732.6 C (90.7 F)
201832.5 C (90.5 F)
201932.6 C (90.7 F)
202023.9 C (75.0 F)
202129.0 C (84.2 F)
202232.9 C (91.2 F)
202328.3 C (82.9 F)
202425.6 C (78.1 F)
202532.1 C (89.8 F)
202632.0 C (89.6 F)

Coldest night (TNn)

Coldest night (TNn) at Hachijojima by year The coldest night of the year at Hachijojima, 1951 to 2026. The record is -2.0 C (28.4 F) in 1981, marked on the chart; the median year is 2.1 C (35.8 F). -202461960198020002020Record: -2.0 C (28.4 F) in 1981
The coldest night of the year at Hachijojima, 1951 to 2026. The record is -2.0 C (28.4 F) in 1981, marked on the chart; the median year is 2.1 C (35.8 F).
Coldest night (TNn) at Hachijojima by year
YearColdest night (TNn)
19512.1 C (35.8 F)
19522.0 C (35.6 F)
19532.7 C (36.9 F)
19542.8 C (37.0 F)
19552.2 C (36.0 F)
19563.1 C (37.6 F)
19571.4 C (34.5 F)
19582.8 C (37.0 F)
19590.7 C (33.3 F)
19602.8 C (37.0 F)
19612.9 C (37.2 F)
19621.7 C (35.1 F)
19630.3 C (32.5 F)
19642.4 C (36.3 F)
19651.9 C (35.4 F)
19661.3 C (34.3 F)
19670.4 C (32.7 F)
19681.8 C (35.2 F)
19691.6 C (34.9 F)
19700.9 C (33.6 F)
19712.4 C (36.3 F)
19724.5 C (40.1 F)
19731.9 C (35.4 F)
19742.3 C (36.1 F)
19751.7 C (35.1 F)
19762.1 C (35.8 F)
19770.0 C (32.0 F)
19782.5 C (36.5 F)
19794.5 C (40.1 F)
19802.1 C (35.8 F)
1981-2.0 C (28.4 F)
19822.4 C (36.3 F)
19833.1 C (37.6 F)
19840.0 C (32.0 F)
19853.3 C (37.9 F)
19862.5 C (36.5 F)
19872.5 C (36.5 F)
19883.1 C (37.6 F)
19891.3 C (34.3 F)
1990-1.9 C (28.6 F)
19911.5 C (34.7 F)
19924.5 C (40.1 F)
19934.7 C (40.5 F)
19943.9 C (39.0 F)
19951.4 C (34.5 F)
19961.7 C (35.1 F)
1997-1.8 C (28.8 F)
19982.6 C (36.7 F)
19991.0 C (33.8 F)
20001.6 C (34.9 F)
20012.7 C (36.9 F)
20022.0 C (35.6 F)
20031.2 C (34.2 F)
20041.7 C (35.1 F)
20062.6 C (36.7 F)
20074.4 C (39.9 F)
20081.2 C (34.2 F)
20093.6 C (38.5 F)
20104.6 C (40.3 F)
20111.1 C (34.0 F)
20121.0 C (33.8 F)
20133.0 C (37.4 F)
20142.5 C (36.5 F)
20152.3 C (36.1 F)
20161.3 C (34.3 F)
20170.8 C (33.4 F)
20180.9 C (33.6 F)
20191.6 C (34.9 F)
20204.2 C (39.6 F)
20211.8 C (35.2 F)
20222.6 C (36.7 F)
20230.2 C (32.4 F)
20242.5 C (36.5 F)
20252.8 C (37.0 F)
20261.8 C (35.2 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Hachijojima by year The wettest day of the year at Hachijojima, 1951 to 2026. The record is 496.0 mm (19.5 in) in 2026, marked on the chart; the median year is 175.3 mm (6.9 in). 02004006001960198020002020Record: 496.0 mm (19.5 in) in 2026
The wettest day of the year at Hachijojima, 1951 to 2026. The record is 496.0 mm (19.5 in) in 2026, marked on the chart; the median year is 175.3 mm (6.9 in).
Wettest day (Rx1day) at Hachijojima by year
YearWettest day (Rx1day)
1951219.9 mm (8.7 in)
1952133.3 mm (5.2 in)
1953340.2 mm (13.4 in)
1954157.7 mm (6.2 in)
1955315.8 mm (12.4 in)
1956185.3 mm (7.3 in)
1957134.5 mm (5.3 in)
1958128.6 mm (5.1 in)
1959103.1 mm (4.1 in)
1960139.1 mm (5.5 in)
1961144.9 mm (5.7 in)
1962149.9 mm (5.9 in)
1963133.3 mm (5.2 in)
1964250.4 mm (9.9 in)
1965425.2 mm (16.7 in)
1966130.9 mm (5.2 in)
1967221.7 mm (8.7 in)
1968368.0 mm (14.5 in)
1969192.0 mm (7.6 in)
1970190.0 mm (7.5 in)
1971178.0 mm (7.0 in)
1972145.0 mm (5.7 in)
197390.0 mm (3.5 in)
197485.0 mm (3.3 in)
1975180.5 mm (7.1 in)
1976143.5 mm (5.6 in)
1977170.5 mm (6.7 in)
1978131.5 mm (5.2 in)
1979250.5 mm (9.9 in)
1980196.0 mm (7.7 in)
1981193.0 mm (7.6 in)
1982265.5 mm (10.5 in)
1983137.5 mm (5.4 in)
1984103.0 mm (4.1 in)
1985310.0 mm (12.2 in)
1986171.0 mm (6.7 in)
1987356.0 mm (14.0 in)
1988397.5 mm (15.6 in)
1989112.5 mm (4.4 in)
1990165.6 mm (6.5 in)
1991226.1 mm (8.9 in)
1992242.1 mm (9.5 in)
1993290.1 mm (11.4 in)
1994101.1 mm (4.0 in)
1995153.9 mm (6.1 in)
1996163.1 mm (6.4 in)
1997169.9 mm (6.7 in)
1998323.1 mm (12.7 in)
1999217.9 mm (8.6 in)
2000188.0 mm (7.4 in)
2001332.0 mm (13.1 in)
2002189.0 mm (7.4 in)
2003222.0 mm (8.7 in)
2004149.1 mm (5.9 in)
2006194.1 mm (7.6 in)
2007189.5 mm (7.5 in)
2008172.5 mm (6.8 in)
2009165.1 mm (6.5 in)
2010140.0 mm (5.5 in)
2011166.1 mm (6.5 in)
2012278.1 mm (10.9 in)
2013114.0 mm (4.5 in)
2014116.1 mm (4.6 in)
2015235.0 mm (9.3 in)
2016168.9 mm (6.6 in)
2017193.0 mm (7.6 in)
2018165.1 mm (6.5 in)
2019255.0 mm (10.0 in)
2020272.0 mm (10.7 in)
2021193.0 mm (7.6 in)
2022160.0 mm (6.3 in)
20230.0 mm (0.00 in)
2024n/a
202570.0 mm (2.8 in)
2026496.0 mm (19.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Hachijojima by year The wettest five days of the year at Hachijojima, 1951 to 2026. The record is 1,132.0 mm (44.6 in) in 2026, marked on the chart; the median year is 292.0 mm (11.5 in). 05001,0001,5001960198020002020Record: 1,132.0 mm (44.6 in) in 2026
The wettest five days of the year at Hachijojima, 1951 to 2026. The record is 1,132.0 mm (44.6 in) in 2026, marked on the chart; the median year is 292.0 mm (11.5 in).
Wettest five days (Rx5day) at Hachijojima by year
YearWettest five days (Rx5day)
1951320.9 mm (12.6 in)
1952246.3 mm (9.7 in)
1953428.5 mm (16.9 in)
1954308.9 mm (12.2 in)
1955434.7 mm (17.1 in)
1956339.4 mm (13.4 in)
1957224.7 mm (8.8 in)
1958228.6 mm (9.0 in)
1959224.8 mm (8.9 in)
1960218.8 mm (8.6 in)
1961258.4 mm (10.2 in)
1962292.8 mm (11.5 in)
1963222.3 mm (8.8 in)
1964473.4 mm (18.6 in)
1965518.9 mm (20.4 in)
1966302.4 mm (11.9 in)
1967482.4 mm (19.0 in)
1968728.5 mm (28.7 in)
1969292.0 mm (11.5 in)
1970230.5 mm (9.1 in)
1971313.5 mm (12.3 in)
1972257.5 mm (10.1 in)
1973186.0 mm (7.3 in)
1974198.5 mm (7.8 in)
1975269.5 mm (10.6 in)
1976207.0 mm (8.1 in)
1977276.0 mm (10.9 in)
1978193.5 mm (7.6 in)
1979428.5 mm (16.9 in)
1980442.5 mm (17.4 in)
1981273.0 mm (10.7 in)
1982596.0 mm (23.5 in)
1983227.5 mm (9.0 in)
1984224.0 mm (8.8 in)
1985387.5 mm (15.3 in)
1986225.0 mm (8.9 in)
1987411.5 mm (16.2 in)
1988571.0 mm (22.5 in)
1989341.5 mm (13.4 in)
1990147.1 mm (5.8 in)
1991609.1 mm (24.0 in)
1992216.3 mm (8.5 in)
1993322.1 mm (12.7 in)
1994172.7 mm (6.8 in)
1995245.9 mm (9.7 in)
1996255.0 mm (10.0 in)
1997308.9 mm (12.2 in)
1998253.0 mm (10.0 in)
1999249.2 mm (9.8 in)
2000245.9 mm (9.7 in)
2001348.2 mm (13.7 in)
2002172.6 mm (6.8 in)
2003345.9 mm (13.6 in)
2004225.0 mm (8.9 in)
2006424.3 mm (16.7 in)
2007304.1 mm (12.0 in)
2008311.9 mm (12.3 in)
2009300.8 mm (11.8 in)
2010414.8 mm (16.3 in)
2011214.1 mm (8.4 in)
2012288.7 mm (11.4 in)
2013110.2 mm (4.3 in)
2014n/a
2015336.0 mm (13.2 in)
2016292.0 mm (11.5 in)
2017436.8 mm (17.2 in)
2018289.3 mm (11.4 in)
2019449.3 mm (17.7 in)
2020710.7 mm (28.0 in)
2021n/a
2022296.9 mm (11.7 in)
2023n/a
2024n/a
2025156.0 mm (6.1 in)
20261,132.0 mm (44.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Hachijojima by year The longest dry spell of the year at Hachijojima, 1951 to 2026. The record is 31 days in 1965, marked on the chart; the median year is 11 days. 0102030401960198020002020Record: 31 days in 1965
The longest dry spell of the year at Hachijojima, 1951 to 2026. The record is 31 days in 1965, marked on the chart; the median year is 11 days.
Longest dry spell (CDD) at Hachijojima by year
YearLongest dry spell (CDD)
195114 days
195212 days
195313 days
19548 days
195518 days
195620 days
195713 days
19588 days
195917 days
19609 days
196111 days
196216 days
196310 days
196411 days
196531 days
196611 days
196710 days
196813 days
196914 days
197017 days
197114 days
197212 days
197318 days
197415 days
197514 days
197613 days
197713 days
19789 days
197915 days
19809 days
198114 days
19829 days
198320 days
198422 days
198513 days
19869 days
19879 days
198815 days
198911 days
19902 days
19912 days
19923 days
19932 days
19942 days
19952 days
19963 days
19973 days
19983 days
19995 days
2000n/a
2001n/a
20023 days
20034 days
200415 days
200611 days
20079 days
200814 days
20099 days
201018 days
20119 days
201211 days
20138 days
2014n/a
201516 days
20168 days
20179 days
201814 days
201910 days
20204 days
20211 day
20229 days
20231 day
2024n/a
202511 days
202626 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

51 years, 1951 to 2019

A day with at least 173.8 mm (6.8 in) of rain is expected about once in 2 years. A day with at least 513.7 mm (20.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Hachijojima: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years173.8 mm (6.8 in)
5 years241.7 mm (9.5 in)
10 years294.6 mm (11.6 in)
25 years372.4 mm (14.7 in)
50 years439.0 mm (17.3 in)
100 years513.7 mm (20.2 in)Longer than the 51 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, 51 years of values from 1951 to 2019.

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: 425.2 mm (16.7 in) in 1965; 397.5 mm (15.6 in) in 1988; 368.0 mm (14.5 in) in 1968.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

  • Data for Hachijojima standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Hachijojima 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 (2026-10-17).