Okayama Threshold Days by Year (JA000047768)

13 fixed thresholds counted per year at Okayama (JA000047768): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Okayama Thresholds

Okayama: days with a maximum temperature at or above 30 C (86 F) in 66 years, most in 2022 with 88.
Okayama: days with a maximum temperature at or above 90 F (32.2 C) in 66 years, most in 2025 with 75.
Okayama: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1980 with 53.
Okayama: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 2016 with 23.
13 fixed thresholds have at least one qualifying day at Okayama.

Days at or above 30 C (86 F)

66 years with a qualifying day

Days per year at Okayama with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 88 in 2022.

Days at or above 30 C (86 F) per year at Okayama
Year	Days	Decade average
1951	42	49.2
1952	48	49.2
1953	43	49.2
1954	37	49.2
1955	60	49.2
1956	51	49.2
1957	43	49.2
1958	61	49.2
1959	58	49.2
1960	65	62.2
1961	83	62.2
1962	67	62.2
1963	57	62.2
1964	67	62.2
1965	47	62.2
1966	60	62.2
1967	71	62.2
1968	45	62.2
1969	60	62.2
1970	61	57.2
1971	50	57.2
1972	51	57.2
1973	63	57.2
1974	51	57.2
1975	72	57.2
1976	43	57.2
1977	56	57.2
1978	72	57.2
1979	53	57.2
1980	26	56.9
1981	56	56.9
1982	43	56.9
1983	63	56.9
1984	62	56.9
1985	72	56.9
1986	62	56.9
1987	67	56.9
1988	55	56.9
1989	63	56.9
1994	79	66.8
1996	58	66.8
1997	63	66.8
1998	70	66.8
1999	64	66.8
2000	78	70.1
2002	75	70.1
2003	54	70.1
2004	73	70.1
2006	67	70.1
2007	75	70.1
2008	71	70.1
2009	68	70.1
2010	86	69.7
2011	69	69.7
2013	72	69.7
2014	58	69.7
2015	52	69.7
2016	77	69.7
2017	72	69.7
2018	72	69.7
2019	69	69.7
2020	69	74.8
2021	64	74.8
2022	88	74.8
2025	87	74.8
2026	66	74.8

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

First to last qualifying date each year at Okayama
Year	First date	Last date
1951	1951-06-02	1951-09-06
1952	1952-06-30	1952-09-12
1953	1953-06-16	1953-09-15
1954	1954-07-25	1954-09-23
1955	1955-06-22	1955-09-13
1956	1956-06-05	1956-09-10
1957	1957-06-14	1957-09-01
1958	1958-05-30	1958-09-16
1959	1959-06-16	1959-09-16
1960	1960-06-09	1960-09-24
1961	1961-05-26	1961-10-06
1962	1962-05-22	1962-09-22
1963	1963-06-20	1963-09-05
1964	1964-06-07	1964-09-20
1965	1965-06-24	1965-08-31
1966	1966-06-23	1966-09-12
1967	1967-06-05	1967-09-12
1968	1968-06-06	1968-09-20
1969	1969-05-09	1969-09-21
1970	1970-06-28	1970-09-17
1971	1971-06-26	1971-09-24
1972	1972-06-10	1972-09-06
1973	1973-06-15	1973-09-02
1974	1974-06-02	1974-09-07
1975	1975-06-03	1975-10-04
1976	1976-06-08	1976-09-07
1977	1977-05-20	1977-09-18
1978	1978-05-27	1978-09-19
1979	1979-05-23	1979-09-23
1980	1980-06-13	1980-09-11
1981	1981-06-07	1981-09-03
1982	1982-05-11	1982-09-02
1983	1983-05-12	1983-09-09
1984	1984-06-18	1984-09-10
1985	1985-05-12	1985-09-21
1986	1986-06-01	1986-09-21
1987	1987-06-03	1987-09-15
1988	1988-06-07	1988-09-15
1989	1989-05-31	1989-09-17
1994	1994-06-03	1994-09-11
1996	1996-05-25	1996-09-06
1997	1997-05-06	1997-09-17
1998	1998-05-22	1998-10-01
1999	1999-06-09	1999-09-30
2000	2000-05-24	2000-09-21
2002	2002-06-01	2002-09-13
2003	2003-06-06	2003-09-19
2004	2004-05-30	2004-09-21
2006	2006-05-31	2006-09-09
2007	2007-05-09	2007-09-28
2008	2008-05-03	2008-09-20
2009	2009-05-10	2009-09-24
2010	2010-05-21	2010-09-22
2011	2011-06-21	2011-09-18
2013	2013-05-21	2013-10-09
2014	2014-05-30	2014-09-16
2015	2015-05-02	2015-08-27
2016	2016-05-21	2016-10-08
2017	2017-05-19	2017-09-13
2018	2018-05-17	2018-10-06
2019	2019-05-24	2019-10-11
2020	2020-06-02	2020-09-23
2021	2021-06-07	2021-10-10
2022	2022-05-29	2022-10-04
2025	2025-05-20	2025-09-26
2026	2026-05-16	2026-09-20

Every Fixed Threshold

Fixed thresholds at Okayama
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	66	88	2022	66
35 C (95 F): Days	55	31	1994	28
90 F (32.2 C): Days	66	75	2025	46
100 F (37.8 C): Days	8	4	1994	2
0 C (32 F): Ice days (max	1	1	1981	1
0 C (32 F): Frost days (min	41	93	1965	28
20 C (68 F): Tropical nights (min	41	113	2025	100
25 C (77 F): Days with min	38	61	2025	45
10 mm (0.39 in): Days with 10 mm or more rain	57	53	1980	23
25 mm (0.98 in): Days with 25 mm or more rain	57	23	2016	22
50 mm (1.97 in): Days with 50 mm or more rain	53	10	1965	19
100 mm (3.94 in): Days with 100 mm or more rain	13	3	1976	12
200 mm (7.87 in): Days with 200 mm or more rain	1	0	n/a	6

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 Okayama 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).

Okayama Threshold Days by Year (JA000047768)

Key Facts for Okayama Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related