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Built 2026-10-19 (19 October 2026)

Heat wave in Japan and 2 other countries, 5 to 19 July 2023

Heat wave in Japan and 2 other countries, 5 to 19 July 2023: 195 records at 107 stations, peak on 9 July 2023. Closed.

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

Key Facts

  • Heat wave in Japan and 2 other countries, 5 to 19 July 2023 set or tied 195 station records at 107 stations.
  • It ran from 5 July 2023 to 19 July 2023 (15 days) and its peak day was 9 July 2023.
  • Status: closed.
  • Matsue set a daily record high minimum temperature of 27.9 C (82.2 F) on 15 July 2023.
  • The busiest day was 9 July 2023 with 27 records.
  • The oldest broken record in the ranked list had stood for 78 years.

Footprint

5 to 19 July 2023
Footprint of Heat wave in Japan and 2 other countries, 5 to 19 July 2023 The area covered by Heat wave in Japan and 2 other countries, 5 to 19 July 2023 is outlined, with 16 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Japan and 2 other countries, 5 to 19 July 2023 is outlined, with 16 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Japan and 2 other countries, 5 to 19 July 2023: stations that set records in the event
StationTypeValueDate
MatsueRecord high minimum temperature27.9 C (82.2 F)2023-07-15
TottoriRecord high minimum temperature27.9 C (82.2 F)2023-07-15
MatsuyamaRecord high minimum temperature28.5 C (83.3 F)2023-07-15
MiyazakiRecord high minimum temperature28.0 C (82.4 F)2023-07-09
TanegashimaRecord high maximum temperature33.5 C (92.3 F)2023-07-18
YakushimaRecord high maximum temperature33.8 C (92.8 F)2023-07-08
IlyinskiyRecord high minimum temperature15.7 C (60.3 F)2023-07-08
UshibukaRecord high minimum temperature27.1 C (80.8 F)2023-07-15
KitamiesashiRecord high maximum temperature32.5 C (90.5 F)2023-07-10
Juzhno-KurilskRecord high maximum temperature23.0 C (73.4 F)2023-07-07
HitoyoshiRecord high minimum temperature24.6 C (76.3 F)2023-07-07
AburatsuRecord high minimum temperature26.9 C (80.4 F)2023-07-08
SosunovoRecord high maximum temperature26.3 C (79.3 F)2023-07-09
OwaseRecord high maximum temperature36.2 C (97.2 F)2023-07-10
MakurazakiRecord high minimum temperature27.3 C (81.1 F)2023-07-16
UwajimaRecord high maximum temperature34.9 C (94.8 F)2023-07-18

Records per Day

Peak day 27
Records per day during Heat wave in Japan and 2 other countries, 5 to 19 July 2023 Records set or tied each day from 5 July 2023 to 19 July 2023. The most in one day was 27 on 9 July 2023. 0 8 15 23 30 07-0507-0707-0907-1107-1307-1507-1707-19
Records set or tied each day from 5 July 2023 to 19 July 2023. The most in one day was 27 on 9 July 2023.
Records per day during Heat wave in Japan and 2 other countries, 5 to 19 July 2023
DateRecords
2023-07-051
2023-07-063
2023-07-0713
2023-07-0814
2023-07-0927
2023-07-1027
2023-07-1111
2023-07-126
2023-07-1310
2023-07-148
2023-07-1517
2023-07-1619
2023-07-1722
2023-07-1814
2023-07-193

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Japan and 2 other countries, 5 to 19 July 2023 ranked by margin
Kitamiesashi, 07-103.3 C (5.9 F)
Matsue, 07-152.8 C (5.0 F)
Tottori, 07-152.5 C (4.5 F)
Matsuyama, 07-152.5 C (4.5 F)
Miyazaki, 07-091.5 C (2.7 F)
Sosunovo, 07-091.3 C (2.3 F)
Yakushima, 07-081.0 C (1.8 F)
Tanegashima, 07-181.0 C (1.8 F)
Owase, 07-101.0 C (1.8 F)
Ushibuka, 07-150.9 C (1.6 F)
Tanegashima, 07-170.8 C (1.4 F)
Tanegashima, 07-070.6 C (1.1 F)
Makurazaki, 07-160.6 C (1.1 F)
Makurazaki, 07-170.6 C (1.1 F)
Uwajima, 07-180.6 C (1.1 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

Margin against age of the broken record in Heat wave in Japan and 2 other countries, 5 to 19 July 2023 195 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. 0 20 40 60 80 0.01.02.03.04.0 Margin (C) Years the old record stood
195 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 2 other countries, 5 to 19 July 2023
Margin (C)Years the old record stood
2.866
2.570
2.556
1.562
1.068
1.066
0.968
0.378
3.361
0.666
0.866
0.574
1.062
0.369
0.660
0.660
0.269
0.665
1.361
0.468
0.661
0.661
0.168
1.356
0.760
0.561
0.758
1.844
0.956
1.050
0.362
0.362
0.261
0.164
0.956
1.944
0.856
2.248
0.161
0.744
1.644
1.444
0.356
0.356
1.741
0.356
0.158
0.350
0.556
1.732
0.252
0.452
0.318
0.645
0.340
0.745
0.340
0.844
0.349
0.450
0.844
0.545
1.541
0.644
0.537
1.534
1.529
0.244
0.440
0.941
1.916
0.244
0.636
0.349
2.49
0.241
0.728
0.14
1.718
0.628
0.434
0.234
0.334
0.916
0.628
0.432
0.134
0.926
0.234
0.134
0.916
1.218
2.35
0.628
0.428
0.328
0.238
0.328
0.424
0.134
0.328
1.918
1.512
1.318
1.622
0.620
0.718
0.516
0.132
0.713
0.133
1.69
1.64
0.818
2.05
0.317
0.221
0.120
0.221
0.120
0.121
1.118
1.18
0.620
0.216
0.216
0.610
0.124
0.214
1.19
1.19
1.64
1.98
0.612
0.413
0.318
0.120
0.118
0.412
0.712
0.84
0.712
0.94
0.610
0.59
0.418
0.410
0.410
0.94
0.114
0.65
0.30
0.79
0.95
1.08
0.75
0.59
0.95
0.94
0.112
0.312
0.112
0.38
0.112
0.69
0.112
0.48
0.75
0.39
0.49
0.85
0.84
0.44
0.64
0.79
0.29
0.54
0.19
0.35
0.44
0.19
0.30
0.25
0.312
0.15
0.34
0.40
0.15
0.20
0.15
0.11
0.21
0.10
0.34
0.10

Compared With Other Events

Station records per event
Station records in Heat wave in Japan and 2 other countries, 5 to 19 July 2023 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 20249,869 records
Heat wave in United States, 28 January to 24 February 20266,528 records
Heat wave in United States and Mexico, 24 May to 19 June 20205,047 records
Heat wave in United States and Mexico, 26 March to 17 April 20213,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 20223,626 records
Heat wave in Japan and 2 other countries, 5 to 19 July 2023 (this event)195 records

Every Record Set

20 of 195
Every record set or tied during Heat wave in Japan and 2 other countries, 5 to 19 July 2023, in date order
DateStationRecordValueMarginYears stoodSignificance
2023-07-07TanegashimaRecord high minimum temperature27.1 C (80.8 F)0.6 C (1.1 F)6631 of 100 (Routine)
2023-07-07Juzhno-KurilskRecord high maximum temperature23.0 C (73.4 F)0.5 C (0.9 F)7430 of 100 (Routine)
2023-07-07HitoyoshiRecord high minimum temperature24.6 C (76.3 F)0.3 C (0.5 F)6928 of 100 (Routine)
2023-07-08YakushimaRecord high maximum temperature33.8 C (92.8 F)1.0 C (1.8 F)6832 of 100 (Routine)
2023-07-08IlyinskiyRecord high minimum temperature15.7 C (60.3 F)0.3 C (0.5 F)7832 of 100 (Routine)
2023-07-08AburatsuRecord high minimum temperature26.9 C (80.4 F)0.2 C (0.4 F)6928 of 100 (Routine)
2023-07-09MiyazakiRecord high minimum temperature28.0 C (82.4 F)1.5 C (2.7 F)6233 of 100 (Routine)
2023-07-09SosunovoRecord high maximum temperature26.3 C (79.3 F)1.3 C (2.3 F)6128 of 100 (Routine)
2023-07-10KitamiesashiRecord high maximum temperature32.5 C (90.5 F)3.3 C (5.9 F)6131 of 100 (Routine)
2023-07-10OwaseRecord high maximum temperature36.2 C (97.2 F)1.0 C (1.8 F)6228 of 100 (Routine)
2023-07-12Juzhno-KurilskRecord high minimum temperature14.4 C (57.9 F)0.4 C (0.7 F)6828 of 100 (Routine)
2023-07-15MatsueRecord high minimum temperature27.9 C (82.2 F)2.8 C (5.0 F)6640 of 100 (Notable)
2023-07-15TottoriRecord high minimum temperature27.9 C (82.2 F)2.5 C (4.5 F)7038 of 100 (Notable)
2023-07-15MatsuyamaRecord high minimum temperature28.5 C (83.3 F)2.5 C (4.5 F)5636 of 100 (Notable)
2023-07-15UshibukaRecord high minimum temperature27.1 C (80.8 F)0.9 C (1.6 F)6832 of 100 (Routine)
2023-07-16MakurazakiRecord high minimum temperature27.3 C (81.1 F)0.6 C (1.1 F)6028 of 100 (Routine)
2023-07-17TanegashimaRecord high maximum temperature33.4 C (92.1 F)0.8 C (1.4 F)6631 of 100 (Routine)
2023-07-17MakurazakiRecord high minimum temperature27.2 C (81.0 F)0.6 C (1.1 F)6028 of 100 (Routine)
2023-07-18TanegashimaRecord high maximum temperature33.5 C (92.3 F)1.0 C (1.8 F)6632 of 100 (Routine)
2023-07-18UwajimaRecord high maximum temperature34.9 C (94.8 F)0.6 C (1.1 F)6528 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 195 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.