Tokyo Threshold Days by Year (JA000047662)

13 fixed thresholds counted per year at Tokyo (JA000047662): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tokyo Thresholds

Tokyo: days with a maximum temperature at or above 30 C (86 F) in 63 years, most in 2004 with 70.
Tokyo: days with a maximum temperature at or above 90 F (32.2 C) in 63 years, most in 1994 with 46.
Tokyo: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 1952 with 62.
Tokyo: days with 25 mm (0.98 in) or more of precipitation in 59 years, most in 1951 with 25.
13 fixed thresholds have at least one qualifying day at Tokyo.

Days at or above 30 C (86 F)

63 years with a qualifying day

Days per year at Tokyo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 70 in 2004.

Days at or above 30 C (86 F) per year at Tokyo
Year	Days	Decade average
1951	42	41.3
1952	41	41.3
1953	29	41.3
1954	41	41.3
1955	57	41.3
1956	40	41.3
1957	32	41.3
1958	42	41.3
1959	48	41.3
1960	46	47.7
1961	66	47.7
1962	58	47.7
1963	51	47.7
1964	52	47.7
1965	29	47.7
1966	39	47.7
1967	52	47.7
1968	32	47.7
1969	52	47.7
1970	51	47.3
1971	41	47.3
1972	40	47.3
1973	52	47.3
1974	39	47.3
1975	62	47.3
1976	31	47.3
1977	41	47.3
1978	63	47.3
1979	53	47.3
1980	21	37.7
1981	41	37.7
1982	24	37.7
1983	35	37.7
1984	51	37.7
1985	54	37.7
1986	33	37.7
1987	50	37.7
1988	21	37.7
1989	47	37.7
1990	59	49.6
1991	45	49.6
1992	46	49.6
1993	20	49.6
1994	66	49.6
1995	50	49.6
1996	46	49.6
1997	58	49.6
1998	46	49.6
1999	60	49.6
2000	66	51.3
2001	50	51.3
2002	57	51.3
2003	36	51.3
2004	70	51.3
2006	38	51.3
2007	54	51.3
2008	53	51.3
2009	38	51.3
2010	70	63.2
2011	61	63.2
2012	66	63.2
2018	67	63.2
2019	52	63.2

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

First to last qualifying date each year at Tokyo
Year	First date	Last date
1951	1951-06-02	1951-09-03
1952	1952-06-24	1952-09-13
1953	1953-06-09	1953-09-26
1954	1954-07-26	1954-09-16
1955	1955-06-22	1955-09-18
1956	1956-05-11	1956-09-11
1957	1957-07-04	1957-09-08
1958	1958-05-31	1958-09-18
1959	1959-05-05	1959-09-27
1960	1960-06-28	1960-09-24
1961	1961-05-29	1961-09-26
1962	1962-07-12	1962-09-24
1963	1963-05-22	1963-09-05
1964	1964-05-24	1964-09-19
1965	1965-06-27	1965-08-25
1966	1966-06-26	1966-09-11
1967	1967-05-31	1967-09-16
1968	1968-06-07	1968-08-29
1969	1969-05-09	1969-09-16
1970	1970-05-18	1970-09-22
1971	1971-06-28	1971-09-24
1972	1972-06-10	1972-09-17
1973	1973-07-05	1973-09-11
1974	1974-07-08	1974-09-08
1975	1975-07-07	1975-09-22
1976	1976-07-08	1976-09-11
1977	1977-05-20	1977-09-21
1978	1978-06-16	1978-09-17
1979	1979-06-18	1979-10-01
1980	1980-06-16	1980-09-13
1981	1981-06-29	1981-09-27
1982	1982-07-12	1982-09-27
1983	1983-07-19	1983-09-13
1984	1984-06-19	1984-10-03
1985	1985-06-06	1985-09-08
1986	1986-06-26	1986-09-22
1987	1987-06-05	1987-09-10
1988	1988-07-09	1988-09-16
1989	1989-06-29	1989-09-28
1990	1990-06-17	1990-09-20
1991	1991-06-11	1991-09-28
1992	1992-07-01	1992-09-11
1993	1993-05-13	1993-09-18
1994	1994-06-27	1994-09-30
1995	1995-07-10	1995-09-25
1996	1996-05-31	1996-09-06
1997	1997-06-21	1997-09-19
1998	1998-06-20	1998-10-02
1999	1999-05-25	1999-09-30
2000	2000-05-30	2000-09-19
2001	2001-06-04	2001-09-18
2002	2002-06-05	2002-09-12
2003	2003-06-14	2003-09-19
2004	2004-05-11	2004-09-30
2006	2006-06-28	2006-09-19
2007	2007-06-15	2007-09-28
2008	2008-07-04	2008-09-13
2009	2009-06-26	2009-09-01
2010	2010-05-21	2010-09-22
2011	2011-06-22	2011-09-19
2012	2012-06-20	2012-10-01
2018	2018-06-09	2018-10-07
2019	2019-05-24	2019-10-05

Every Fixed Threshold

Fixed thresholds at Tokyo
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	63	70	2004	52
35 C (95 F): Days	43	13	1995	10
90 F (32.2 C): Days	63	46	1994	32
100 F (37.8 C): Days	9	2	2004	1
0 C (32 F): Ice days (max	1	2	1967	2
0 C (32 F): Frost days (min	39	60	1956	7
20 C (68 F): Tropical nights (min	40	105	1961	47
25 C (77 F): Days with min	40	39	1978	25
10 mm (0.39 in): Days with 10 mm or more rain	59	62	1952	30
25 mm (0.98 in): Days with 25 mm or more rain	59	25	1951	8
50 mm (1.97 in): Days with 50 mm or more rain	58	10	2004	3
100 mm (3.94 in): Days with 100 mm or more rain	28	3	1963	1
200 mm (7.87 in): Days with 200 mm or more rain	5	1	1958	1

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 Tokyo 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Tokyo Threshold Days by Year (JA000047662)

Key Facts for Tokyo Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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