Sumoto Threshold Days by Year (JA000047776)

13 fixed thresholds counted per year at Sumoto (JA000047776): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sumoto Thresholds

Sumoto: days with a maximum temperature at or above 30 C (86 F) in 65 years, most in 2025 with 77.
Sumoto: days with a maximum temperature at or above 90 F (32.2 C) in 61 years, most in 2025 with 57.
Sumoto: days with 10 mm (0.39 in) or more of precipitation in 53 years, most in 1980 with 57.
Sumoto: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 1974 with 26.
13 fixed thresholds have at least one qualifying day at Sumoto.

Days at or above 30 C (86 F)

65 years with a qualifying day

Days per year at Sumoto with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 2025.

Days at or above 30 C (86 F) per year at Sumoto
Year	Days	Decade average
1951	40	42.7
1952	42	42.7
1953	33	42.7
1954	32	42.7
1955	51	42.7
1956	48	42.7
1957	29	42.7
1958	55	42.7
1959	54	42.7
1960	50	50.2
1961	62	50.2
1962	52	50.2
1963	47	50.2
1964	69	50.2
1965	43	50.2
1966	50	50.2
1967	58	50.2
1968	27	50.2
1969	44	50.2
1970	48	38.7
1971	36	38.7
1972	38	38.7
1973	54	38.7
1974	31	38.7
1975	42	38.7
1976	17	38.7
1977	37	38.7
1978	54	38.7
1979	30	38.7
1980	9	29.9
1981	31	29.9
1982	8	29.9
1983	45	29.9
1984	47	29.9
1985	52	29.9
1986	36	29.9
1987	34	29.9
1988	14	29.9
1989	23	29.9
1995	46	42
1996	38	42
1998	42	42
2000	53	39.7
2002	45	39.7
2003	27	39.7
2004	34	39.7
2005	45	39.7
2006	42	39.7
2007	43	39.7
2008	43	39.7
2009	25	39.7
2010	60	46.1
2011	49	46.1
2012	46	46.1
2013	49	46.1
2014	30	46.1
2015	23	46.1
2016	48	46.1
2017	48	46.1
2018	53	46.1
2019	55	46.1
2021	49	63
2022	72	63
2025	77	63
2026	54	63

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

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

Every Fixed Threshold

Fixed thresholds at Sumoto
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	65	77	2025	54
35 C (95 F): Days	19	13	2018	17
90 F (32.2 C): Days	61	57	2025	41
100 F (37.8 C): Days	1	0	n/a	1
0 C (32 F): Ice days (max	2	1	1981	1
0 C (32 F): Frost days (min	41	49	1984	7
20 C (68 F): Tropical nights (min	41	116	2025	103
25 C (77 F): Days with min	38	62	2025	47
10 mm (0.39 in): Days with 10 mm or more rain	53	57	1980	28
25 mm (0.98 in): Days with 25 mm or more rain	53	26	1974	22
50 mm (1.97 in): Days with 50 mm or more rain	53	11	1952	19
100 mm (3.94 in): Days with 100 mm or more rain	37	7	2018	10
200 mm (7.87 in): Days with 200 mm or more rain	12	3	2011	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 Sumoto 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).

Sumoto Threshold Days by Year (JA000047776)

Key Facts for Sumoto Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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