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Built 2026-10-19 (19 October 2026)

Heat wave in Japan and 4 other countries, 23 to 30 April 2024

Heat wave in Japan and 4 other countries, 23 to 30 April 2024: 114 records at 73 stations, peak on 26 April 2024. Closed.

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

Key Facts

  • Heat wave in Japan and 4 other countries, 23 to 30 April 2024 set or tied 114 station records at 73 stations.
  • It ran from 23 April 2024 to 30 April 2024 (8 days) and its peak day was 26 April 2024.
  • Status: closed.
  • Pogranichnyj set a daily record high minimum temperature of 9.3 C (48.7 F) on 26 April 2024.
  • The busiest day was 26 April 2024 with 33 records.
  • The oldest broken record in the ranked list had stood for 121 years.

Footprint

23 to 30 April 2024
Footprint of Heat wave in Japan and 4 other countries, 23 to 30 April 2024 The area covered by Heat wave in Japan and 4 other countries, 23 to 30 April 2024 is outlined, with 19 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Japan and 4 other countries, 23 to 30 April 2024 is outlined, with 19 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, 23 to 30 April 2024: stations that set records in the event
StationTypeValueDate
PogranichnyjRecord high minimum temperature9.3 C (48.7 F)2024-04-26
OnahamaRecord high minimum temperature17.6 C (63.7 F)2024-04-30
ChoshiRecord high minimum temperature18.6 C (65.5 F)2024-04-29
SendaiRecord high minimum temperature13.4 C (56.1 F)2024-04-25
HikoneRecord high maximum temperature27.2 C (81.0 F)2024-04-28
OshimaRecord high minimum temperature17.6 C (63.7 F)2024-04-30
NikkoRecord high minimum temperature8.3 C (46.9 F)2024-04-30
PreobrazhenieRecord high minimum temperature7.8 C (46.0 F)2024-04-27
YokohamaRecord high maximum temperature27.7 C (81.9 F)2024-04-28
HakodateRecord high minimum temperature9.6 C (49.3 F)2024-04-27
Rudnaja PristanRecord high minimum temperature9.6 C (49.3 F)2024-04-27
SumotoRecord high maximum temperature26.5 C (79.7 F)2024-04-28
Mys TerpenijRecord high maximum temperature7.8 C (46.0 F)2024-04-27
Juzhno-KurilskRecord high maximum temperature16.6 C (61.9 F)2024-04-28
YanjiRecord high minimum temperature10.8 C (51.4 F)2024-04-26
HachinoheRecord high maximum temperature25.4 C (77.7 F)2024-04-26
KutchanRecord high maximum temperature24.5 C (76.1 F)2024-04-27
HyesanRecord high minimum temperature8.3 C (46.9 F)2024-04-27
IrozakiRecord high maximum temperature24.2 C (75.6 F)2024-04-30

Records per Day

Peak day 33
Records per day during Heat wave in Japan and 4 other countries, 23 to 30 April 2024 Records set or tied each day from 23 April 2024 to 30 April 2024. The most in one day was 33 on 26 April 2024. 0 10 20 30 40 04-2304-2404-2504-2604-2704-2804-2904-30
Records set or tied each day from 23 April 2024 to 30 April 2024. The most in one day was 33 on 26 April 2024.
Records per day during Heat wave in Japan and 4 other countries, 23 to 30 April 2024
DateRecords
2024-04-231
2024-04-244
2024-04-253
2024-04-2633
2024-04-2717
2024-04-2824
2024-04-2917
2024-04-3015

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Japan and 4 other countries, 23 to 30 April 2024 ranked by margin
Hyesan, 04-273.0 C (5.4 F)
Rudnaja Pristan, 04-272.8 C (5.0 F)
Yanji, 04-261.7 C (3.1 F)
Onahama, 04-301.5 C (2.7 F)
Sendai, 04-251.5 C (2.7 F)
Hachinohe, 04-261.4 C (2.5 F)
Sumoto, 04-281.3 C (2.3 F)
Oshima, 04-301.2 C (2.2 F)
Hikone, 04-281.2 C (2.2 F)
Hakodate, 04-271.0 C (1.8 F)
Sendai, 04-271.0 C (1.8 F)
Yokohama, 04-280.9 C (1.6 F)
Nikko, 04-300.8 C (1.4 F)
Preobrazhenie, 04-270.8 C (1.4 F)
Juzhno-Kurilsk, 04-280.8 C (1.4 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 4 other countries, 23 to 30 April 2024 114 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 38 75 113 150 0.01.32.53.85.0 Margin (C) Years the old record stood
114 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, 23 to 30 April 2024
Margin (C)Years the old record stood
0.5121
1.558
0.558
1.569
1.271
1.271
0.871
0.965
0.862
1.058
1.058
1.358
2.827
0.557
0.857
1.749
0.726
1.456
0.326
3.042
0.262
1.057
0.952
0.226
0.258
0.358
0.456
1.245
1.049
1.049
0.516
1.241
0.152
1.049
0.852
0.149
0.148
1.042
0.149
0.842
1.827
1.03
5.010
0.739
0.839
1.39
1.041
0.341
0.112
2.628
3.110
0.141
0.238
0.441
0.927
0.527
1.410
0.827
0.626
0.428
1.218
1.512
1.110
0.721
1.122
0.526
0.726
0.326
0.426
0.324
0.126
0.332
0.326
1.121
0.710
1.212
0.221
1.98
0.210
0.910
1.010
0.321
1.72
1.212
1.112
0.812
1.012
2.36
1.512
1.211
0.510
0.99
0.712
0.612
0.512
1.512
0.812
0.612
1.99
0.96
0.410
0.310
0.412
1.42
0.212
0.412
0.58
0.812
0.212
0.19
0.19
1.02
0.52
0.25

Compared With Other Events

Station records per event
Station records in Heat wave in Japan and 4 other countries, 23 to 30 April 2024 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 4 other countries, 23 to 30 April 2024 (this event)114 records

Every Record Set

20 of 114
Every record set or tied during Heat wave in Japan and 4 other countries, 23 to 30 April 2024, in date order
DateStationRecordValueMarginYears stoodSignificance
2024-04-25SendaiRecord high minimum temperature13.4 C (56.1 F)1.5 C (2.7 F)6931 of 100 (Routine)
2024-04-26PogranichnyjRecord high minimum temperature9.3 C (48.7 F)0.5 C (0.9 F)12141 of 100 (Notable)
2024-04-26YanjiRecord high minimum temperature10.8 C (51.4 F)1.7 C (3.1 F)4925 of 100 (Routine)
2024-04-26HachinoheRecord high maximum temperature25.4 C (77.7 F)1.4 C (2.5 F)5625 of 100 (Routine)
2024-04-27PreobrazhenieRecord high minimum temperature7.8 C (46.0 F)0.8 C (1.4 F)6228 of 100 (Routine)
2024-04-27HakodateRecord high minimum temperature9.6 C (49.3 F)1.0 C (1.8 F)5827 of 100 (Routine)
2024-04-27SendaiRecord high minimum temperature14.6 C (58.3 F)1.0 C (1.8 F)5827 of 100 (Routine)
2024-04-27Rudnaja PristanRecord high minimum temperature9.6 C (49.3 F)2.8 C (5.0 F)2727 of 100 (Routine)
2024-04-27Mys TerpenijRecord high maximum temperature7.8 C (46.0 F)0.5 C (0.9 F)5726 of 100 (Routine)
2024-04-27KutchanRecord high maximum temperature24.5 C (76.1 F)0.7 C (1.3 F)2625 of 100 (Routine)
2024-04-27HyesanRecord high minimum temperature8.3 C (46.9 F)3.0 C (5.4 F)4225 of 100 (Routine)
2024-04-28HikoneRecord high maximum temperature27.2 C (81.0 F)1.2 C (2.2 F)7131 of 100 (Routine)
2024-04-28YokohamaRecord high maximum temperature27.7 C (81.9 F)0.9 C (1.6 F)6528 of 100 (Routine)
2024-04-28SumotoRecord high maximum temperature26.5 C (79.7 F)1.3 C (2.3 F)5827 of 100 (Routine)
2024-04-28Juzhno-KurilskRecord high maximum temperature16.6 C (61.9 F)0.8 C (1.4 F)5726 of 100 (Routine)
2024-04-29ChoshiRecord high minimum temperature18.6 C (65.5 F)0.5 C (0.9 F)5837 of 100 (Notable)
2024-04-30OnahamaRecord high minimum temperature17.6 C (63.7 F)1.5 C (2.7 F)5838 of 100 (Notable)
2024-04-30OshimaRecord high minimum temperature17.6 C (63.7 F)1.2 C (2.2 F)7131 of 100 (Routine)
2024-04-30NikkoRecord high minimum temperature8.3 C (46.9 F)0.8 C (1.4 F)7130 of 100 (Routine)
2024-04-30IrozakiRecord high maximum temperature24.2 C (75.6 F)0.3 C (0.5 F)2625 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 114 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.