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Built 2026-10-19 (19 October 2026)

Chichi Jima Bonin Is Threshold Days by Year (JAW00042402)

9 fixed thresholds counted per year at Chichi Jima Bonin Is (JAW00042402): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chichi Jima Bonin Is Thresholds

  • Chichi Jima Bonin Is: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 2005 with 44.
  • Chichi Jima Bonin Is: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 2005 with 20.
  • Chichi Jima Bonin Is: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 2005 with 7.
  • Chichi Jima Bonin Is: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 1980 with 92.
  • 9 fixed thresholds have at least one qualifying day at Chichi Jima Bonin Is.
25 years with a qualifying day
Days at or above 30 C (86 F) per year at Chichi Jima Bonin Is Days per year at Chichi Jima Bonin Is with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 1980. 02550751001967: 401976: 411979: 751980: 921981: 721983: 631984: 601985: 391986: 521987: 291988: 61989: 161990: 231991: 701996: 511997: 711998: 592005: 742007: 492008: 762009: 782010: 842011: 642012: 522025: 77196719801984198719901997200720102025
Days per year at Chichi Jima Bonin Is with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 1980.
Days at or above 30 C (86 F) per year at Chichi Jima Bonin Is
YearDaysDecade average
19674040
19764158
19797558
19809247.7
19817247.7
19836347.7
19846047.7
19853947.7
19865247.7
19872947.7
1988647.7
19891647.7
19902354.8
19917054.8
19965154.8
19977154.8
19985954.8
20057469.3
20074969.3
20087669.3
20097869.3
20108466.7
20116466.7
20125266.7
20257777
First to last qualifying date each year at Chichi Jima Bonin Is For each year, a bar from the first to the last day at Chichi Jima Bonin Is meeting 30 C (86 F). 1967: 8 June 1967 to 3 October 19671976: 24 June 1976 to 3 October 19761979: 28 June 1979 to 15 October 19791980: 15 June 1980 to 28 September 19801981: 13 June 1981 to 10 October 19811983: 17 July 1983 to 22 October 19831984: 24 June 1984 to 20 October 19841985: 29 June 1985 to 14 October 19851986: 6 July 1986 to 2 October 19861987: 18 July 1987 to 5 September 19871988: 7 July 1988 to 17 September 19881989: 2 July 1989 to 25 September 19891990: 6 July 1990 to 8 October 19901991: 13 June 1991 to 2 October 19911996: 25 June 1996 to 24 September 19961997: 30 June 1997 to 28 September 19971998: 11 June 1998 to 3 November 19982005: 18 June 2005 to 19 October 20052007: 8 July 2007 to 20 October 20072008: 23 May 2008 to 15 October 20082009: 26 June 2009 to 21 October 20092010: 22 June 2010 to 29 October 20102011: 27 May 2011 to 19 October 20112012: 16 June 2012 to 5 October 20122025: 27 May 2025 to 23 October 20251967198119861990199820092025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Chichi Jima Bonin Is meeting 30 C (86 F).
First to last qualifying date each year at Chichi Jima Bonin Is
YearFirst dateLast date
19671967-06-081967-10-03
19761976-06-241976-10-03
19791979-06-281979-10-15
19801980-06-151980-09-28
19811981-06-131981-10-10
19831983-07-171983-10-22
19841984-06-241984-10-20
19851985-06-291985-10-14
19861986-07-061986-10-02
19871987-07-181987-09-05
19881988-07-071988-09-17
19891989-07-021989-09-25
19901990-07-061990-10-08
19911991-06-131991-10-02
19961996-06-251996-09-24
19971997-06-301997-09-28
19981998-06-111998-11-03
20052005-06-182005-10-19
20072007-07-082007-10-20
20082008-05-232008-10-15
20092009-06-262009-10-21
20102010-06-222010-10-29
20112011-05-272011-10-19
20122012-06-162012-10-05
20252025-05-272025-10-23

Every Fixed Threshold

Fixed thresholds at Chichi Jima Bonin Is
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2592198077
90 F (32.2 C): Days111619916
20 C (68 F): Tropical nights (min22322025232
25 C (77 F): Days with min21372025137
10 mm (0.39 in): Days with 10 mm or more rain2744200529
25 mm (0.98 in): Days with 25 mm or more rain2720200510
50 mm (1.97 in): Days with 50 mm or more rain26720052
100 mm (3.94 in): Days with 100 mm or more rain21119671
200 mm (7.87 in): Days with 200 mm or more rain30n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1967.

Download the Data

  • Data for Chichi Jima Bonin Is 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). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-12).