Heat wave in Japan and 4 other countries, 11 to 28 May 2019

Name: Heat wave in Japan and 4 other countries, 11 to 28 May 2019
Start: 2019-05-11
End: 2019-05-28
Location: Japan, Russia, China, Korea, South, Korea, North

Heat wave in Japan and 4 other countries, 11 to 28 May 2019: 572 records at 213 stations, peak on 26 May 2019. Closed.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Key Facts

Heat wave in Japan and 4 other countries, 11 to 28 May 2019 set or tied 572 station records at 213 stations.
It ran from 11 May 2019 to 28 May 2019 (18 days) and its peak day was 26 May 2019.
Status: closed.
Juzhno-Kurilsk set a monthly record high minimum temperature of 12.6 C (54.7 F) on 27 May 2019.
The busiest day was 26 May 2019 with 123 records.
The oldest broken record in the ranked list had stood for 74 years.

Footprint

11 to 28 May 2019

The area covered by Heat wave in Japan and 4 other countries, 11 to 28 May 2019 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Heat wave in Japan and 4 other countries, 11 to 28 May 2019: stations that set records in the event
Station	Type	Value	Date
Juzhno-Kurilsk	Record high minimum temperature	12.6 C (54.7 F)	2019-05-27
Obihiro	Record high maximum temperature	38.8 C (101.8 F)	2019-05-26
Izuhara	Record high minimum temperature	23.1 C (73.6 F)	2019-05-24
Mombetsu	Record high maximum temperature	37.0 C (98.6 F)	2019-05-26
Bratoljubovka	Record high minimum temperature	11.2 C (52.2 F)	2019-05-12
Otaru	Record high maximum temperature	30.2 C (86.4 F)	2019-05-25
Sumoto	Record high maximum temperature	32.2 C (90.0 F)	2019-05-25
Muroran	Record high minimum temperature	15.3 C (59.5 F)	2019-05-26
Hiroo	Record high maximum temperature	35.8 C (96.4 F)	2019-05-26
Mokpo	Record high minimum temperature	17.0 C (62.6 F)	2019-05-16
Iwamizawa	Record high maximum temperature	31.8 C (89.2 F)	2019-05-26
Urakawa	Record high maximum temperature	23.1 C (73.6 F)	2019-05-26
Choshi	Record high maximum temperature	28.2 C (82.8 F)	2019-05-26
Rumoi	Record high minimum temperature	15.9 C (60.6 F)	2019-05-27
Kumagaya	Record high maximum temperature	36.2 C (97.2 F)	2019-05-27
Saigo	Record high maximum temperature	31.0 C (87.8 F)	2019-05-26
Takamatsu	Record high maximum temperature	32.6 C (90.7 F)	2019-05-24
Matsue	Record high maximum temperature	32.4 C (90.3 F)	2019-05-26
Anucino	Record high maximum temperature	35.4 C (95.7 F)	2019-05-26
Shirakawa	Record high maximum temperature	32.9 C (91.2 F)	2019-05-26

Records per Day

Peak day 123

Records set or tied each day from 11 May 2019 to 28 May 2019. The most in one day was 123 on 26 May 2019.

Records per day during Heat wave in Japan and 4 other countries, 11 to 28 May 2019
Date	Records
2019-05-11	2
2019-05-12	10
2019-05-13	10
2019-05-14	5
2019-05-15	4
2019-05-16	14
2019-05-17	19
2019-05-18	33
2019-05-19	37
2019-05-20	24
2019-05-21	4
2019-05-22	8
2019-05-23	20
2019-05-24	53
2019-05-25	107
2019-05-26	123
2019-05-27	84
2019-05-28	15

Top Records by Margin

Margin over the record replaced

Top records of Heat wave in Japan and 4 other countries, 11 to 28 May 2019 ranked by margin
Bratoljubovka, 05-12	6.2 C (11.2 F)
Izuhara, 05-24	4.5 C (8.1 F)
Urakawa, 05-26	3.2 C (5.8 F)
Juzhno-Kurilsk, 05-27	2.9 C (5.2 F)
Choshi, 05-26	2.8 C (5.0 F)
Iwamizawa, 05-26	2.6 C (4.7 F)
Obihiro, 05-26	1.4 C (2.5 F)
Mokpo, 05-16	1.4 C (2.5 F)
Sumoto, 05-25	1.1 C (2.0 F)
Kumagaya, 05-27	1.0 C (1.8 F)
Shirakawa, 05-26	0.9 C (1.6 F)
Hiroo, 05-26	0.8 C (1.4 F)
Mombetsu, 05-26	0.7 C (1.3 F)
Otaru, 05-25	0.7 C (1.3 F)
Muroran, 05-26	0.7 C (1.3 F)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

500 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.

Margin against age of the broken record in Heat wave in Japan and 4 other countries, 11 to 28 May 2019
Margin (C)	Years the old record stood
2.9	38
1.4	42
0.7	40
4.5	53
0.7	67
0.7	60
0.8	33
1.1	60
6.2	48
0.3	67
2.6	52
3.2	68
1.0	60
2.8	61
1.4	74
0.7	57
0.5	57
0.3	60
0.4	60
0.9	50
0.7	51
2.7	68
0.4	51
2.1	68
0.9	45
3.6	25
1.8	66
3.3	57
1.9	68
3.1	50
1.9	65
0.9	68
3.7	25
4.1	52
5.0	46
0.7	45
3.1	57
1.6	57
1.5	66
3.0	50
2.3	56
1.3	61
2.4	50
2.6	50
1.7	62
1.2	39
4.2	24
0.4	3
0.1	45
0.4	45
2.0	31
0.8	68
0.7	38
0.7	66
2.3	57
0.7	66
1.6	57
1.2	57
3.2	40
2.5	48
1.2	64
2.1	58
0.9	57
0.1	69
0.2	70
3.1	48
1.1	62
2.7	52
1.1	56
3.0	18
1.6	28
1.6	56
1.9	57
0.3	66
2.7	44
1.4	22
4.3	28
2.1	37
3.8	46
1.6	62
2.7	48
1.6	52
0.4	32
1.4	53
1.8	53
0.2	66
1.2	26
1.3	26
1.4	57
1.8	21
1.9	48
1.8	44
4.5	25
3.5	45
1.6	52
0.4	52
0.9	50
0.2	60
1.3	57
3.9	45
0.7	56
4.5	28
2.2	45
1.3	56
0.7	58
1.4	52
1.0	56
1.4	54
0.1	54
0.3	60
1.7	45
0.7	48
2.6	44
2.8	42
1.1	53
2.1	44
0.2	60
1.6	52
0.4	60
2.8	48
2.0	48
0.4	57
1.8	48
0.9	56
0.7	56
0.7	54
0.6	22
1.4	33
2.0	18
1.2	49
3.0	9
2.0	40
0.4	57
1.2	18
0.7	53
2.4	46
0.3	57
0.8	52
2.3	9
2.9	0
1.8	48
0.8	56
1.2	52
1.9	48
1.2	48
0.7	52
1.0	21
0.4	53
0.3	54
0.9	52
0.9	14
0.5	56
3.1	22
0.1	57
0.9	48
1.5	44
0.4	57
0.1	58
0.3	21
0.3	54
0.4	54
1.2	36
0.8	46
1.0	48
1.1	48
0.5	52
1.8	42
1.8	3
0.1	22
0.7	45
1.0	45
1.8	30
1.3	40
1.3	42
3.3	28
0.7	14
0.5	18
0.9	14
0.3	54
0.3	56
1.8	34
2.1	34
1.2	48
1.6	38
0.5	46
0.3	14
2.5	4
1.3	38
0.5	48
4.5	18
2.5	0
1.5	36
1.8	36
3.0	28
0.1	52
1.2	40
0.1	19
0.3	14
2.5	30
0.4	40

Compared With Other Events

Station records per event

Station records in Heat wave in Japan and 4 other countries, 11 to 28 May 2019 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 2024	9,869 records
Heat wave in United States, 28 January to 24 February 2026	6,528 records
Heat wave in United States and Mexico, 24 May to 19 June 2020	5,047 records
Heat wave in United States and Mexico, 26 March to 17 April 2021	3,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 2022	3,626 records
Heat wave in Japan and 4 other countries, 11 to 28 May 2019 (this event)	572 records

Every Record Set

20 of 572

Every record set or tied during Heat wave in Japan and 4 other countries, 11 to 28 May 2019, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2019-05-12	Bratoljubovka	Record high minimum temperature	11.2 C (52.2 F)	6.2 C (11.2 F)	48	37 of 100 (Notable)
2019-05-16	Mokpo	Record high minimum temperature	17.0 C (62.6 F)	1.4 C (2.5 F)	74	36 of 100 (Notable)
2019-05-24	Izuhara	Record high minimum temperature	23.1 C (73.6 F)	4.5 C (8.1 F)	53	39 of 100 (Notable)
2019-05-24	Takamatsu	Record high maximum temperature	32.6 C (90.7 F)	0.3 C (0.5 F)	60	34 of 100 (Routine)
2019-05-25	Otaru	Record high maximum temperature	30.2 C (86.4 F)	0.7 C (1.3 F)	67	37 of 100 (Notable)
2019-05-25	Sumoto	Record high maximum temperature	32.2 C (90.0 F)	1.1 C (2.0 F)	60	37 of 100 (Notable)
2019-05-26	Obihiro	Record high maximum temperature	38.8 C (101.8 F)	1.4 C (2.5 F)	42	40 of 100 (Notable)
2019-05-26	Mombetsu	Record high maximum temperature	37.0 C (98.6 F)	0.7 C (1.3 F)	40	39 of 100 (Notable)
2019-05-26	Muroran	Record high minimum temperature	15.3 C (59.5 F)	0.7 C (1.3 F)	60	37 of 100 (Notable)
2019-05-26	Hiroo	Record high maximum temperature	35.8 C (96.4 F)	0.8 C (1.4 F)	33	37 of 100 (Notable)
2019-05-26	Iwamizawa	Record high maximum temperature	31.8 C (89.2 F)	2.6 C (4.7 F)	52	36 of 100 (Notable)
2019-05-26	Urakawa	Record high maximum temperature	23.1 C (73.6 F)	3.2 C (5.8 F)	68	36 of 100 (Notable)
2019-05-26	Choshi	Record high maximum temperature	28.2 C (82.8 F)	2.8 C (5.0 F)	61	36 of 100 (Notable)
2019-05-26	Saigo	Record high maximum temperature	31.0 C (87.8 F)	0.7 C (1.3 F)	57	35 of 100 (Notable)
2019-05-26	Matsue	Record high maximum temperature	32.4 C (90.3 F)	0.5 C (0.9 F)	57	34 of 100 (Routine)
2019-05-26	Anucino	Record high maximum temperature	35.4 C (95.7 F)	0.4 C (0.7 F)	60	34 of 100 (Routine)
2019-05-26	Shirakawa	Record high maximum temperature	32.9 C (91.2 F)	0.9 C (1.6 F)	50	33 of 100 (Routine)
2019-05-27	Juzhno-Kurilsk	Record high minimum temperature	12.6 C (54.7 F)	2.9 C (5.2 F)	38	42 of 100 (Notable)
2019-05-27	Rumoi	Record high minimum temperature	15.9 C (60.6 F)	0.3 C (0.5 F)	67	36 of 100 (Notable)
2019-05-27	Kumagaya	Record high maximum temperature	36.2 C (97.2 F)	1.0 C (1.8 F)	60	36 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 572 records the event counts. The counts above use the full total.

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 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.

Margin (C)	Years the old record stood
2.9	38
1.4	42
0.7	40
4.5	53
0.7	67
0.7	60
0.8	33
1.1	60
6.2	48
0.3	67
2.6	52
3.2	68
1.0	60
2.8	61
1.4	74
0.7	57
0.5	57
0.3	60
0.4	60
0.9	50
0.7	51
2.7	68
0.4	51
2.1	68
0.9	45
3.6	25
1.8	66
3.3	57
1.9	68
3.1	50
1.9	65
0.9	68
3.7	25
4.1	52
5.0	46
0.7	45
3.1	57
1.6	57
1.5	66
3.0	50
2.3	56
1.3	61
2.4	50
2.6	50
1.7	62
1.2	39
4.2	24
0.4	3
0.1	45
0.4	45
2.0	31
0.8	68
0.7	38
0.7	66
2.3	57
0.7	66
1.6	57
1.2	57
3.2	40
2.5	48
1.2	64
2.1	58
0.9	57
0.1	69
0.2	70
3.1	48
1.1	62
2.7	52
1.1	56
3.0	18
1.6	28
1.6	56
1.9	57
0.3	66
2.7	44
1.4	22
4.3	28
2.1	37
3.8	46
1.6	62
2.7	48
1.6	52
0.4	32
1.4	53
1.8	53
0.2	66
1.2	26
1.3	26
1.4	57
1.8	21
1.9	48
1.8	44
4.5	25
3.5	45
1.6	52
0.4	52
0.9	50
0.2	60
1.3	57
3.9	45
0.7	56
4.5	28
2.2	45
1.3	56
0.7	58
1.4	52
1.0	56
1.4	54
0.1	54
0.3	60
1.7	45
0.7	48
2.6	44
2.8	42
1.1	53
2.1	44
0.2	60
1.6	52
0.4	60
2.8	48
2.0	48
0.4	57
1.8	48
0.9	56
0.7	56
0.7	54
0.6	22
1.4	33
2.0	18
1.2	49
3.0	9
2.0	40
0.4	57
1.2	18
0.7	53
2.4	46
0.3	57
0.8	52
2.3	9
2.9	0
1.8	48
0.8	56
1.2	52
1.9	48
1.2	48
0.7	52
1.0	21
0.4	53
0.3	54
0.9	52
0.9	14
0.5	56
3.1	22
0.1	57
0.9	48
1.5	44
0.4	57
0.1	58
0.3	21
0.3	54
0.4	54
1.2	36
0.8	46
1.0	48
1.1	48
0.5	52
1.8	42
1.8	3
0.1	22
0.7	45
1.0	45
1.8	30
1.3	40
1.3	42
3.3	28
0.7	14
0.5	18
0.9	14
0.3	54
0.3	56
1.8	34
2.1	34
1.2	48
1.6	38
0.5	46
0.3	14
2.5	4
1.3	38
0.5	48
4.5	18
2.5	0
1.5	36
1.8	36
3.0	28
0.1	52
1.2	40
0.1	19
0.3	14
2.5	30
0.4	40

Margin (C)	Years the old record stood
2.9	38
1.4	42
0.7	40
4.5	53
0.7	67
0.7	60
0.8	33
1.1	60
6.2	48
0.3	67
2.6	52
3.2	68
1.0	60
2.8	61
1.4	74
0.7	57
0.5	57
0.3	60
0.4	60
0.9	50
0.7	51
2.7	68
0.4	51
2.1	68
0.9	45
3.6	25
1.8	66
3.3	57
1.9	68
3.1	50
1.9	65
0.9	68
3.7	25
4.1	52
5.0	46
0.7	45
3.1	57
1.6	57
1.5	66
3.0	50
2.3	56
1.3	61
2.4	50
2.6	50
1.7	62
1.2	39
4.2	24
0.4	3
0.1	45
0.4	45
2.0	31
0.8	68
0.7	38
0.7	66
2.3	57
0.7	66
1.6	57
1.2	57
3.2	40
2.5	48
1.2	64
2.1	58
0.9	57
0.1	69
0.2	70
3.1	48
1.1	62
2.7	52
1.1	56
3.0	18
1.6	28
1.6	56
1.9	57
0.3	66
2.7	44
1.4	22
4.3	28
2.1	37
3.8	46
1.6	62
2.7	48
1.6	52
0.4	32
1.4	53
1.8	53
0.2	66
1.2	26
1.3	26
1.4	57
1.8	21
1.9	48
1.8	44
4.5	25
3.5	45
1.6	52
0.4	52
0.9	50
0.2	60
1.3	57
3.9	45
0.7	56
4.5	28
2.2	45
1.3	56
0.7	58
1.4	52
1.0	56
1.4	54
0.1	54
0.3	60
1.7	45
0.7	48
2.6	44
2.8	42
1.1	53
2.1	44
0.2	60
1.6	52
0.4	60
2.8	48
2.0	48
0.4	57
1.8	48
0.9	56
0.7	56
0.7	54
0.6	22
1.4	33
2.0	18
1.2	49
3.0	9
2.0	40
0.4	57
1.2	18
0.7	53
2.4	46
0.3	57
0.8	52
2.3	9
2.9	0
1.8	48
0.8	56
1.2	52
1.9	48
1.2	48
0.7	52
1.0	21
0.4	53
0.3	54
0.9	52
0.9	14
0.5	56
3.1	22
0.1	57
0.9	48
1.5	44
0.4	57
0.1	58
0.3	21
0.3	54
0.4	54
1.2	36
0.8	46
1.0	48
1.1	48
0.5	52
1.8	42
1.8	3
0.1	22
0.7	45
1.0	45
1.8	30
1.3	40
1.3	42
3.3	28
0.7	14
0.5	18
0.9	14
0.3	54
0.3	56
1.8	34
2.1	34
1.2	48
1.6	38
0.5	46
0.3	14
2.5	4
1.3	38
0.5	48
4.5	18
2.5	0
1.5	36
1.8	36
3.0	28
0.1	52
1.2	40
0.1	19
0.3	14
2.5	30
0.4	40