Sukumo Threshold Days by Year (JA000047897)

13 fixed thresholds counted per year at Sukumo (JA000047897): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sukumo Thresholds

Sukumo: days with a maximum temperature at or above 30 C (86 F) in 66 years, most in 2025 with 84.
Sukumo: days with a maximum temperature at or above 90 F (32.2 C) in 66 years, most in 2013 with 28.
Sukumo: days with 10 mm (0.39 in) or more of precipitation in 53 years, most in 1966 with 72.
Sukumo: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 1966 with 40.
13 fixed thresholds have at least one qualifying day at Sukumo.

Days at or above 30 C (86 F)

66 years with a qualifying day

Days per year at Sukumo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 84 in 2025.

Days at or above 30 C (86 F) per year at Sukumo
Year	Days	Decade average
1951	36	42.6
1952	46	42.6
1953	38	42.6
1954	26	42.6
1955	43	42.6
1956	50	42.6
1957	27	42.6
1958	62	42.6
1959	55	42.6
1960	55	51.8
1961	61	51.8
1962	56	51.8
1963	49	51.8
1964	66	51.8
1965	39	51.8
1966	50	51.8
1967	57	51.8
1968	35	51.8
1969	50	51.8
1970	55	47.4
1971	57	47.4
1972	46	47.4
1973	56	47.4
1974	40	47.4
1975	43	47.4
1976	27	47.4
1977	52	47.4
1978	58	47.4
1979	40	47.4
1980	34	33.4
1981	44	33.4
1982	13	33.4
1983	47	33.4
1984	35	33.4
1985	38	33.4
1986	35	33.4
1987	30	33.4
1988	32	33.4
1989	26	33.4
1995	43	40.8
1996	38	40.8
1997	28	40.8
1998	54	40.8
2000	44	50.8
2002	51	50.8
2003	40	50.8
2004	48	50.8
2005	56	50.8
2006	49	50.8
2007	65	50.8
2008	53	50.8
2009	51	50.8
2010	62	50.7
2011	57	50.7
2012	47	50.7
2013	61	50.7
2014	28	50.7
2015	39	50.7
2016	60	50.7
2017	57	50.7
2018	56	50.7
2019	40	50.7
2021	54	66
2022	73	66
2025	84	66
2026	53	66

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

First to last qualifying date each year at Sukumo
Year	First date	Last date
1951	1951-06-19	1951-09-02
1952	1952-06-30	1952-09-13
1953	1953-07-24	1953-09-16
1954	1954-07-25	1954-09-09
1955	1955-06-29	1955-09-17
1956	1956-06-22	1956-09-08
1957	1957-07-09	1957-08-31
1958	1958-05-31	1958-09-16
1959	1959-06-30	1959-09-18
1960	1960-06-27	1960-09-25
1961	1961-06-13	1961-10-05
1962	1962-06-18	1962-10-03
1963	1963-06-22	1963-09-16
1964	1964-07-01	1964-09-22
1965	1965-07-14	1965-08-30
1966	1966-06-24	1966-09-13
1967	1967-06-13	1967-09-14
1968	1968-07-17	1968-10-06
1969	1969-07-13	1969-09-26
1970	1970-07-14	1970-09-29
1971	1971-06-27	1971-09-25
1972	1972-06-10	1972-09-10
1973	1973-06-15	1973-09-19
1974	1974-07-03	1974-09-05
1975	1975-07-18	1975-10-04
1976	1976-07-16	1976-09-07
1977	1977-06-29	1977-09-15
1978	1978-07-02	1978-09-19
1979	1979-05-29	1979-09-19
1980	1980-07-06	1980-09-19
1981	1981-06-23	1981-09-04
1982	1982-07-10	1982-09-03
1983	1983-07-03	1983-09-11
1984	1984-07-06	1984-09-03
1985	1985-07-08	1985-09-18
1986	1986-06-26	1986-09-05
1987	1987-06-05	1987-09-16
1988	1988-07-01	1988-09-16
1989	1989-07-13	1989-09-17
1995	1995-06-20	1995-09-08
1996	1996-06-29	1996-09-19
1997	1997-07-23	1997-09-17
1998	1998-04-29	1998-09-20
2000	2000-05-23	2000-09-13
2002	2002-06-22	2002-09-21
2003	2003-07-08	2003-09-14
2004	2004-07-03	2004-09-15
2005	2005-05-31	2005-09-25
2006	2006-06-21	2006-09-09
2007	2007-05-27	2007-09-28
2008	2008-05-26	2008-09-19
2009	2009-06-14	2009-09-28
2010	2010-07-05	2010-09-22
2011	2011-06-25	2011-09-15
2012	2012-06-06	2012-09-15
2013	2013-06-13	2013-10-02
2014	2014-06-29	2014-09-08
2015	2015-07-09	2015-09-10
2016	2016-06-23	2016-10-02
2017	2017-07-02	2017-09-18
2018	2018-06-25	2018-10-07
2019	2019-05-24	2019-10-04
2021	2021-07-04	2021-10-12
2022	2022-06-23	2022-10-05
2025	2025-06-16	2025-10-13
2026	2026-07-09	2026-09-21

Every Fixed Threshold

Fixed thresholds at Sukumo
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	66	84	2025	53
35 C (95 F): Days	31	10	2013	2
40 C (104 F): Days	2	1	1996	1
90 F (32.2 C): Days	66	28	2013	24
100 F (37.8 C): Days	3	1	1966	1
0 C (32 F): Frost days (min	41	38	1977	5
20 C (68 F): Tropical nights (min	41	134	2025	107
25 C (77 F): Days with min	36	59	2025	24
10 mm (0.39 in): Days with 10 mm or more rain	53	72	1966	25
25 mm (0.98 in): Days with 25 mm or more rain	53	40	1966	21
50 mm (1.97 in): Days with 50 mm or more rain	53	17	2019	20
100 mm (3.94 in): Days with 100 mm or more rain	46	5	1975	13
200 mm (7.87 in): Days with 200 mm or more rain	9	2	2011	10

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 Sukumo 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).

Sukumo Threshold Days by Year (JA000047897)

Key Facts for Sukumo Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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