Izuhara Threshold Days by Year (JA000047800)

12 fixed thresholds counted per year at Izuhara (JA000047800): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Izuhara Thresholds

Izuhara: days with a maximum temperature at or above 30 C (86 F) in 63 years, most in 2025 with 60.
Izuhara: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1972 with 73.
Izuhara: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 1972 with 40.
Izuhara: days with 50 mm (1.97 in) or more of precipitation in 57 years, most in 2018 with 25.
12 fixed thresholds have at least one qualifying day at Izuhara.

Days at or above 30 C (86 F)

63 years with a qualifying day

Days per year at Izuhara with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 60 in 2025.

Days at or above 30 C (86 F) per year at Izuhara
Year	Days	Decade average
1951	29	21.7
1952	17	21.7
1953	29	21.7
1954	22	21.7
1955	23	21.7
1956	31	21.7
1957	6	21.7
1958	20	21.7
1959	18	21.7
1960	38	25.8
1961	34	25.8
1962	13	25.8
1963	11	25.8
1964	35	25.8
1965	16	25.8
1966	30	25.8
1967	39	25.8
1968	9	25.8
1969	33	25.8
1970	23	23.4
1971	24	23.4
1972	10	23.4
1973	33	23.4
1974	11	23.4
1975	30	23.4
1976	12	23.4
1977	21	23.4
1978	49	23.4
1979	21	23.4
1980	2	20
1981	33	20
1982	18	20
1983	21	20
1984	28	20
1985	39	20
1986	24	20
1987	7	20
1988	15	20
1989	13	20
1990	49	27.9
1991	9	27.9
1992	16	27.9
1994	51	27.9
1995	33	27.9
1996	29	27.9
1997	21	27.9
1999	15	27.9
2000	38	30.2
2001	37	30.2
2002	19	30.2
2003	21	30.2
2004	41	30.2
2006	34	30.2
2007	36	30.2
2008	35	30.2
2009	11	30.2
2010	49	39.6
2011	30	39.6
2012	37	39.6
2018	53	39.6
2019	29	39.6
2025	60	54.5
2026	49	54.5

For each year, a bar from the first to the last day at Izuhara meeting 30 C (86 F).

First to last qualifying date each year at Izuhara
Year	First date	Last date
1951	1951-07-23	1951-09-01
1952	1952-07-24	1952-08-30
1953	1953-07-17	1953-09-03
1954	1954-08-06	1954-09-17
1955	1955-07-14	1955-08-26
1956	1956-07-12	1956-09-04
1957	1957-07-18	1957-08-30
1958	1958-05-29	1958-09-15
1959	1959-06-16	1959-09-16
1960	1960-07-11	1960-09-02
1961	1961-07-10	1961-09-13
1962	1962-06-18	1962-09-07
1963	1963-07-16	1963-09-01
1964	1964-07-06	1964-09-06
1965	1965-07-27	1965-08-28
1966	1966-07-25	1966-09-08
1967	1967-07-16	1967-09-08
1968	1968-07-20	1968-08-21
1969	1969-07-19	1969-09-06
1970	1970-07-23	1970-09-08
1971	1971-07-05	1971-08-16
1972	1972-07-22	1972-08-18
1973	1973-07-07	1973-08-28
1974	1974-07-20	1974-08-30
1975	1975-07-17	1975-09-03
1976	1976-07-17	1976-08-22
1977	1977-07-10	1977-09-07
1978	1978-07-04	1978-09-09
1979	1979-05-28	1979-09-22
1980	1980-07-20	1980-09-03
1981	1981-05-26	1981-08-31
1982	1982-06-11	1982-08-21
1983	1983-07-25	1983-09-02
1984	1984-06-27	1984-08-30
1985	1985-07-19	1985-09-12
1986	1986-07-18	1986-08-27
1987	1987-07-09	1987-08-30
1988	1988-06-14	1988-08-22
1989	1989-06-06	1989-09-11
1990	1990-06-23	1990-09-12
1991	1991-07-20	1991-09-05
1992	1992-07-22	1992-09-07
1994	1994-07-04	1994-09-10
1995	1995-07-21	1995-09-07
1996	1996-07-17	1996-08-23
1997	1997-07-20	1997-09-09
1999	1999-06-14	1999-09-20
2000	2000-06-16	2000-09-02
2001	2001-06-26	2001-08-26
2002	2002-07-13	2002-09-02
2003	2003-08-02	2003-09-18
2004	2004-06-20	2004-09-13
2006	2006-07-13	2006-08-29
2007	2007-06-27	2007-09-21
2008	2008-07-07	2008-08-18
2009	2009-06-25	2009-08-27
2010	2010-07-06	2010-09-21
2011	2011-06-29	2011-09-15
2012	2012-07-12	2012-09-04
2018	2018-06-24	2018-09-04
2019	2019-06-20	2019-09-11
2025	2025-06-27	2025-09-25
2026	2026-07-08	2026-09-03

Every Fixed Threshold

Fixed thresholds at Izuhara
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	63	60	2025	49
35 C (95 F): Days	5	5	2018	2
90 F (32.2 C): Days	51	33	2018	21
0 C (32 F): Ice days (max	10	2	1963	1
0 C (32 F): Frost days (min	41	51	1977	12
20 C (68 F): Tropical nights (min	41	122	2025	109
25 C (77 F): Days with min	41	54	2025	46
10 mm (0.39 in): Days with 10 mm or more rain	57	73	1972	24
25 mm (0.98 in): Days with 25 mm or more rain	57	40	1972	18
50 mm (1.97 in): Days with 50 mm or more rain	57	25	2018	13
100 mm (3.94 in): Days with 100 mm or more rain	54	9	1985	10
200 mm (7.87 in): Days with 200 mm or more rain	15	3	1972	4

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

Data for Izuhara 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Izuhara Threshold Days by Year (JA000047800)

Key Facts for Izuhara Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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