Owase Threshold Days by Year (JA000047663)

12 fixed thresholds counted per year at Owase (JA000047663): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Owase Thresholds

Owase: days with a maximum temperature at or above 30 C (86 F) in 68 years, most in 2025 with 71.
Owase: days with a maximum temperature at or above 90 F (32.2 C) in 68 years, most in 2018 with 38.
Owase: days with 10 mm (0.39 in) or more of precipitation in 52 years, most in 1954 with 98.
Owase: days with 25 mm (0.98 in) or more of precipitation in 52 years, most in 1954 with 59.
12 fixed thresholds have at least one qualifying day at Owase.

Days at or above 30 C (86 F)

68 years with a qualifying day

Days per year at Owase with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 2025.

Days at or above 30 C (86 F) per year at Owase
Year	Days	Decade average
1951	29	30.4
1952	27	30.4
1953	35	30.4
1954	22	30.4
1955	44	30.4
1956	27	30.4
1957	16	30.4
1958	29	30.4
1959	45	30.4
1960	43	34.5
1961	56	34.5
1962	27	34.5
1963	29	34.5
1964	35	34.5
1965	34	34.5
1966	32	34.5
1967	41	34.5
1968	22	34.5
1969	26	34.5
1970	25	31.5
1971	27	31.5
1972	29	31.5
1973	36	31.5
1974	26	31.5
1975	27	31.5
1976	20	31.5
1977	33	31.5
1978	47	31.5
1979	45	31.5
1980	21	34.4
1981	29	34.4
1982	18	34.4
1983	53	34.4
1984	39	34.4
1985	51	34.4
1986	30	34.4
1987	48	34.4
1988	30	34.4
1989	25	34.4
1990	47	39.8
1991	38	39.8
1992	25	39.8
1993	16	39.8
1994	55	39.8
1995	54	39.8
1996	33	39.8
1997	41	39.8
1998	52	39.8
1999	37	39.8
2000	45	42.9
2001	42	42.9
2002	45	42.9
2004	50	42.9
2006	36	42.9
2007	45	42.9
2008	45	42.9
2009	35	42.9
2010	63	47
2014	34	47
2015	40	47
2016	44	47
2017	49	47
2018	54	47
2019	45	47
2021	48	56.3
2022	67	56.3
2025	71	56.3
2026	39	56.3

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

First to last qualifying date each year at Owase
Year	First date	Last date
1951	1951-07-09	1951-09-06
1952	1952-06-30	1952-09-14
1953	1953-07-04	1953-09-26
1954	1954-07-09	1954-09-26
1955	1955-06-25	1955-09-18
1956	1956-06-27	1956-08-28
1957	1957-07-04	1957-08-28
1958	1958-05-30	1958-09-18
1959	1959-05-05	1959-09-18
1960	1960-06-27	1960-09-19
1961	1961-05-29	1961-10-19
1962	1962-07-22	1962-09-16
1963	1963-05-31	1963-09-02
1964	1964-07-03	1964-09-25
1965	1965-05-27	1965-08-26
1966	1966-07-12	1966-09-12
1967	1967-05-30	1967-09-14
1968	1968-06-11	1968-08-24
1969	1969-06-26	1969-09-20
1970	1970-05-26	1970-09-22
1971	1971-06-11	1971-09-25
1972	1972-06-08	1972-09-17
1973	1973-07-07	1973-09-10
1974	1974-06-18	1974-09-09
1975	1975-06-23	1975-09-22
1976	1976-06-09	1976-08-24
1977	1977-05-20	1977-09-20
1978	1978-06-17	1978-09-17
1979	1979-05-23	1979-10-01
1980	1980-05-15	1980-09-12
1981	1981-05-11	1981-09-04
1982	1982-05-13	1982-09-26
1983	1983-06-22	1983-09-13
1984	1984-06-19	1984-10-03
1985	1985-07-01	1985-10-13
1986	1986-06-26	1986-09-29
1987	1987-07-04	1987-09-18
1988	1988-07-09	1988-09-17
1989	1989-06-25	1989-09-28
1990	1990-06-16	1990-09-15
1991	1991-06-12	1991-09-20
1992	1992-07-18	1992-09-10
1993	1993-06-16	1993-09-18
1994	1994-06-14	1994-09-30
1995	1995-07-03	1995-09-11
1996	1996-06-25	1996-09-10
1997	1997-05-08	1997-09-19
1998	1998-05-08	1998-10-18
1999	1999-06-09	1999-10-02
2000	2000-06-22	2000-09-07
2001	2001-06-19	2001-10-01
2002	2002-06-09	2002-09-08
2004	2004-05-17	2004-09-21
2006	2006-05-01	2006-09-18
2007	2007-05-26	2007-09-18
2008	2008-07-04	2008-09-26
2009	2009-06-22	2009-09-19
2010	2010-06-16	2010-09-22
2014	2014-07-01	2014-10-06
2015	2015-07-13	2015-09-04
2016	2016-06-23	2016-09-29
2017	2017-06-19	2017-09-18
2018	2018-05-18	2018-09-18
2019	2019-06-28	2019-10-06
2021	2021-05-09	2021-10-06
2022	2022-05-29	2022-10-04
2025	2025-06-17	2025-10-13
2026	2026-05-29	2026-09-22

Every Fixed Threshold

Fixed thresholds at Owase
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	68	71	2025	39
35 C (95 F): Days	50	11	1995	5
90 F (32.2 C): Days	68	38	2018	21
100 F (37.8 C): Days	6	2	2016	1
0 C (32 F): Frost days (min	41	64	1984	6
20 C (68 F): Tropical nights (min	41	122	2025	102
25 C (77 F): Days with min	21	38	2025	29
10 mm (0.39 in): Days with 10 mm or more rain	52	98	1954	21
25 mm (0.98 in): Days with 25 mm or more rain	52	59	1954	19
50 mm (1.97 in): Days with 50 mm or more rain	52	37	1954	16
100 mm (3.94 in): Days with 100 mm or more rain	52	19	1954	8
200 mm (7.87 in): Days with 200 mm or more rain	48	6	1954	2

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 Owase 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).

Owase Threshold Days by Year (JA000047663)

Key Facts for Owase Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related