Warm to Cold Record Ratio: Japan

4,958 record highs and 231 record lows were set in Japan in 2026, a ratio of 21 to 1, with the trend by year and decade.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Key Facts

In 2026, 4,958 record highs and 231 record lows were set in Japan, a warm to cold ratio of 21 to 1.
So far this year, 4,958 record highs and 231 record lows have been set in Japan, a ratio of 21 to 1.
The ratio in Japan was 1.0 to 1 in the 1980s and 15 to 1 in the 2020s.
The series starts in 1981.
A ratio of 1 to 1 means as many record highs as record lows; above 1 means more record highs.

Ratio by Year

Record highs divided by record lows

Record highs divided by record lows for each year in Japan, from 1981 to 2026. A value of 1 is an even split.

Ratio of record highs to record lows by year, Japan
Year	Highs to lows
1981	0.4 to 1
1982	0.9 to 1
1983	1.1 to 1
1984	0.6 to 1
1985	1.2 to 1
1986	0.5 to 1
1987	2.2 to 1
1988	1.0 to 1
1989	2.2 to 1
1990	8.4 to 1
1991	3.1 to 1
1992	1.2 to 1
1993	0.7 to 1
1994	9.7 to 1
1995	1.9 to 1
1996	1.0 to 1
1997	2.2 to 1
1998	8.2 to 1
1999	3.7 to 1
2000	3.9 to 1
2001	2.5 to 1
2002	1.7 to 1
2003	1.4 to 1
2004	5.3 to 1
2005	1.9 to 1
2006	2.7 to 1
2007	5.6 to 1
2008	2.6 to 1
2009	2.4 to 1
2010	3.7 to 1
2011	3.3 to 1
2012	2.1 to 1
2013	5.6 to 1
2014	2.3 to 1
2015	4.4 to 1
2016	6.9 to 1
2017	3.1 to 1
2018	5.5 to 1
2019	7.5 to 1
2020	9.0 to 1
2021	4.0 to 1
2022	9.7 to 1
2023	18 to 1
2024	66 to 1
2025	25 to 1
2026	21 to 1

The chart starts in 1981. Earlier years are left out because fewer than 500 records were set in each, from too few stations to give a steady ratio. The data download has every year.

Ratio by Decade

Decade ratios in Japan: 1980s 1.0 to 1, 1990s 2.6 to 1, 2000s 2.7 to 1, 2010s 4.1 to 1, 2020s 15 to 1. Dashed line: an even split of 1 to 1.

Cumulative Highs and Lows in 2026

Running totals of record highs and record lows in Japan through 2026: 4,958 highs against 231 lows so far.

Cumulative record highs and record lows in 2026, Japan
Date	Record highs	Record lows
2026-01-01	1	2
2026-01-02	1	4
2026-01-04	3	4
2026-01-05	4	4
2026-01-10	19	4
2026-01-11	26	5
2026-01-13	28	5
2026-01-14	29	5
2026-01-15	44	5
2026-01-16	87	5
2026-01-17	153	5
2026-01-18	171	5
2026-01-19	200	5
2026-01-22	200	10
2026-01-25	200	11
2026-01-26	200	12
2026-01-30	200	13
2026-02-04	213	13
2026-02-05	237	13
2026-02-06	242	13
2026-02-07	242	14
2026-02-08	242	74
2026-02-09	242	75
2026-02-10	247	75
2026-02-11	248	75
2026-02-12	249	75
2026-02-13	252	75
2026-02-14	261	75
2026-02-15	323	75
2026-02-17	328	75
2026-02-18	331	75
2026-02-20	332	75
2026-02-21	352	75
2026-02-22	454	75
2026-02-23	495	75
2026-02-24	567	75
2026-02-25	615	75
2026-02-26	687	75
2026-02-27	752	75
2026-02-28	772	75
2026-03-01	781	75
2026-03-02	796	75
2026-03-03	803	75
2026-03-04	805	75
2026-03-05	815	75
2026-03-06	834	75
2026-03-07	848	75
2026-03-08	850	75
2026-03-13	854	75
2026-03-14	860	75
2026-03-15	868	75
2026-03-18	876	75
2026-03-19	881	75
2026-03-22	887	75
2026-03-23	892	75
2026-03-24	899	75
2026-03-25	901	75
2026-03-26	919	75
2026-04-02	923	75
2026-04-03	937	75
2026-04-04	1,001	75
2026-04-05	1,016	75
2026-04-06	1,049	75
2026-04-08	1,060	75
2026-04-09	1,113	75
2026-04-10	1,189	75
2026-04-11	1,216	75
2026-04-12	1,222	75
2026-04-13	1,236	75
2026-04-14	1,281	75
2026-04-15	1,285	75
2026-04-16	1,291	75
2026-04-17	1,307	75
2026-04-18	1,324	75
2026-04-20	1,353	75
2026-04-21	1,357	75
2026-04-22	1,358	75
2026-04-23	1,358	76
2026-04-25	1,359	76
2026-04-26	1,366	76
2026-04-28	1,390	76
2026-04-30	1,390	80
2026-05-01	1,393	85
2026-05-02	1,395	85
2026-05-03	1,406	85
2026-05-04	1,406	87
2026-05-05	1,409	88
2026-05-06	1,419	88
2026-05-07	1,452	88
2026-05-08	1,455	88
2026-05-09	1,455	92
2026-05-10	1,458	93
2026-05-11	1,469	93
2026-05-12	1,472	93
2026-05-13	1,473	93
2026-05-14	1,475	93
2026-05-15	1,478	93
2026-05-16	1,483	93
2026-05-17	1,521	93
2026-05-18	1,580	93
2026-05-19	1,671	93
2026-05-20	1,741	93
2026-05-21	1,751	94
2026-05-22	1,753	101
2026-05-23	1,771	101
2026-05-24	1,811	101
2026-05-25	1,849	101
2026-05-26	1,935	101
2026-05-27	2,031	101
2026-05-28	2,120	101
2026-05-29	2,136	101
2026-05-30	2,154	101
2026-05-31	2,199	101
2026-06-01	2,305	101
2026-06-02	2,354	101
2026-06-03	2,390	101
2026-06-04	2,401	101
2026-06-05	2,406	106
2026-06-06	2,437	106
2026-06-07	2,457	106
2026-06-08	2,457	107
2026-06-09	2,457	110
2026-06-10	2,459	111
2026-06-11	2,459	112
2026-06-12	2,460	112
2026-06-13	2,461	113
2026-06-14	2,461	114
2026-06-15	2,463	114
2026-06-16	2,465	114
2026-06-17	2,469	115
2026-06-18	2,483	115
2026-06-19	2,498	115
2026-06-20	2,508	115
2026-06-21	2,513	115
2026-06-23	2,513	122
2026-06-24	2,513	124
2026-06-25	2,516	124
2026-06-26	2,517	126
2026-06-27	2,517	127
2026-06-28	2,518	128
2026-07-02	2,519	128
2026-07-03	2,519	144
2026-07-04	2,520	144
2026-07-05	2,523	145
2026-07-06	2,525	148
2026-07-07	2,529	148
2026-07-08	2,539	148
2026-07-09	2,561	148
2026-07-10	2,600	148
2026-07-11	2,647	148
2026-07-12	2,711	148
2026-07-13	2,755	148
2026-07-14	2,823	148
2026-07-15	2,922	148
2026-07-16	2,971	148
2026-07-17	3,041	148
2026-07-18	3,106	148
2026-07-19	3,173	148
2026-07-20	3,199	149
2026-07-21	3,231	149
2026-07-22	3,326	149
2026-07-23	3,400	149
2026-07-24	3,472	149
2026-07-25	3,536	150
2026-07-26	3,592	150
2026-07-27	3,640	150
2026-07-28	3,681	151
2026-07-29	3,726	153
2026-07-30	3,762	154
2026-07-31	3,804	154
2026-08-01	3,874	155
2026-08-02	3,945	155
2026-08-03	3,980	163
2026-08-04	3,999	163
2026-08-05	4,014	163
2026-08-06	4,074	163
2026-08-07	4,152	164
2026-08-08	4,179	164
2026-08-09	4,193	164
2026-08-10	4,195	164
2026-08-11	4,201	165
2026-08-12	4,209	171
2026-08-13	4,218	173
2026-08-14	4,227	173
2026-08-15	4,234	173
2026-08-16	4,237	174
2026-08-17	4,245	174
2026-08-18	4,266	174
2026-08-19	4,308	174
2026-08-20	4,325	175
2026-08-21	4,333	176
2026-08-22	4,341	176
2026-08-23	4,356	176
2026-08-24	4,389	176
2026-08-25	4,455	176
2026-08-26	4,530	176
2026-08-27	4,564	176
2026-08-28	4,600	176
2026-08-29	4,634	180
2026-08-30	4,662	181
2026-08-31	4,693	181
2026-09-01	4,718	181
2026-09-02	4,758	181
2026-09-03	4,762	183
2026-09-04	4,762	196
2026-09-05	4,763	196
2026-09-06	4,763	200
2026-09-07	4,765	200
2026-09-08	4,771	200
2026-09-10	4,772	209
2026-09-11	4,774	214
2026-09-12	4,780	214
2026-09-13	4,792	214
2026-09-14	4,793	216
2026-09-17	4,795	216
2026-09-18	4,796	216
2026-09-19	4,808	216
2026-09-20	4,831	216
2026-09-21	4,845	216
2026-09-22	4,854	216
2026-09-23	4,858	216
2026-09-24	4,862	219
2026-09-25	4,865	219
2026-09-26	4,872	219
2026-09-27	4,901	219
2026-09-28	4,923	219
2026-09-29	4,924	219
2026-09-30	4,925	219
2026-10-01	4,936	219
2026-10-02	4,936	220
2026-10-03	4,937	223
2026-10-04	4,937	231
2026-10-05	4,945	231
2026-10-06	4,955	231
2026-10-07	4,958	231

Year to Date Against Previous Years

The ratio of record highs to record lows over the same part of the year, for each of the previous ten years and this year (highlighted). Dashed line: an even split of 1 to 1.

Year to date ratio against the previous ten years, Japan
Year	Ratio
2016	12 to 1
2017	5.1 to 1
2018	5.3 to 1
2019	6.8 to 1
2020	11 to 1
2021	4.8 to 1
2022	14 to 1
2023	30 to 1
2024	60 to 1
2025	35 to 1
2026 (this year)	21 to 1

Download the Data

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 2026-10-12. Records are computed by this site. The ratio uses record highs and record lows of daily maximum and minimum temperature.

Decade	Ratio
1980s	1.0 to 1
1990s	2.6 to 1
2000s	2.7 to 1
2010s	4.1 to 1
2020s	15 to 1