Chichijima Threshold Days by Year (JA000047971)
9 fixed thresholds counted per year at Chichijima (JA000047971): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Chichijima Thresholds
- Chichijima: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 1980 with 76.
- Chichijima: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1983 with 48.
- Chichijima: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1989 with 23.
- Chichijima: days with 50 mm (1.97 in) or more of precipitation in 33 years, most in 1989 with 8.
- 9 fixed thresholds have at least one qualifying day at Chichijima.
Days at or above 30 C (86 F)
34 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1969 | 75 | 75 |
| 1970 | 53 | 51.3 |
| 1971 | 75 | 51.3 |
| 1972 | 62 | 51.3 |
| 1973 | 58 | 51.3 |
| 1974 | 45 | 51.3 |
| 1975 | 47 | 51.3 |
| 1976 | 35 | 51.3 |
| 1977 | 40 | 51.3 |
| 1978 | 45 | 51.3 |
| 1979 | 53 | 51.3 |
| 1980 | 76 | 41.8 |
| 1981 | 47 | 41.8 |
| 1982 | 28 | 41.8 |
| 1983 | 63 | 41.8 |
| 1984 | 60 | 41.8 |
| 1985 | 39 | 41.8 |
| 1986 | 52 | 41.8 |
| 1987 | 29 | 41.8 |
| 1988 | 8 | 41.8 |
| 1989 | 16 | 41.8 |
| 1990 | 23 | 53.1 |
| 1991 | 70 | 53.1 |
| 1992 | 14 | 53.1 |
| 1993 | 54 | 53.1 |
| 1994 | 49 | 53.1 |
| 1995 | 76 | 53.1 |
| 1996 | 51 | 53.1 |
| 1997 | 71 | 53.1 |
| 1998 | 61 | 53.1 |
| 1999 | 62 | 53.1 |
| 2000 | 38 | 43 |
| 2001 | 55 | 43 |
| 2002 | 36 | 43 |
| Year | First date | Last date |
|---|---|---|
| 1969 | 1969-06-27 | 1969-10-09 |
| 1970 | 1970-06-24 | 1970-09-27 |
| 1971 | 1971-06-08 | 1971-10-20 |
| 1972 | 1972-06-15 | 1972-09-30 |
| 1973 | 1973-06-28 | 1973-10-14 |
| 1974 | 1974-06-26 | 1974-10-20 |
| 1975 | 1975-06-16 | 1975-10-14 |
| 1976 | 1976-08-09 | 1976-09-23 |
| 1977 | 1977-06-13 | 1977-10-15 |
| 1978 | 1978-06-23 | 1978-10-14 |
| 1979 | 1979-06-30 | 1979-10-07 |
| 1980 | 1980-06-15 | 1980-09-27 |
| 1981 | 1981-06-26 | 1981-09-27 |
| 1982 | 1982-06-11 | 1982-10-03 |
| 1983 | 1983-07-17 | 1983-10-22 |
| 1984 | 1984-06-24 | 1984-10-20 |
| 1985 | 1985-06-29 | 1985-10-14 |
| 1986 | 1986-07-06 | 1986-10-02 |
| 1987 | 1987-07-18 | 1987-09-05 |
| 1988 | 1988-07-07 | 1988-09-17 |
| 1989 | 1989-07-02 | 1989-09-25 |
| 1990 | 1990-07-06 | 1990-10-08 |
| 1991 | 1991-06-13 | 1991-10-02 |
| 1992 | 1992-07-28 | 1992-09-20 |
| 1993 | 1993-06-27 | 1993-10-11 |
| 1994 | 1994-06-20 | 1994-10-17 |
| 1995 | 1995-06-30 | 1995-10-17 |
| 1996 | 1996-06-25 | 1996-09-24 |
| 1997 | 1997-06-30 | 1997-09-28 |
| 1998 | 1998-06-11 | 1998-11-03 |
| 1999 | 1999-06-19 | 1999-10-14 |
| 2000 | 2000-06-08 | 2000-10-09 |
| 2001 | 2001-06-11 | 2001-10-15 |
| 2002 | 2002-06-16 | 2002-10-09 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 34 | 76 | 1980 | 36 |
| 90 F (32.2 C): Days | 11 | 16 | 1991 | 13 |
| 20 C (68 F): Tropical nights (min | 32 | 246 | 1998 | 214 |
| 25 C (77 F): Days with min | 32 | 114 | 1991 | 86 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 33 | 48 | 1983 | 30 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 33 | 23 | 1989 | 8 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 33 | 8 | 1989 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 18 | 3 | 1972 | 2 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 3 | 2 | 1997 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.
Download the Data
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 (2025-12-31).