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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Heat wave in China and 2 other countries, 5 to 23 June 2021

Heat wave in China and 2 other countries, 5 to 23 June 2021: 192 records at 75 stations, peak on 18 June 2021. Closed.

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

Key Facts

  • Heat wave in China and 2 other countries, 5 to 23 June 2021 set or tied 192 station records at 75 stations.
  • It ran from 5 June 2021 to 23 June 2021 (19 days) and its peak day was 18 June 2021.
  • Status: closed.
  • Longzhou set a monthly record high maximum temperature of 40.1 C (104.2 F) on 20 June 2021.
  • The busiest day was 18 June 2021 with 21 records.
  • The oldest broken record in the ranked list had stood for 70 years.

Footprint

5 to 23 June 2021
Footprint of Heat wave in China and 2 other countries, 5 to 23 June 2021 The area covered by Heat wave in China and 2 other countries, 5 to 23 June 2021 is outlined, with 17 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in China and 2 other countries, 5 to 23 June 2021 is outlined, with 17 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in China and 2 other countries, 5 to 23 June 2021: stations that set records in the event
StationTypeValueDate
LongzhouRecord high maximum temperature40.1 C (104.2 F)2021-06-20
HeyuanRecord high minimum temperature28.2 C (82.8 F)2021-06-19
DarlagRecord high maximum temperature22.0 C (71.6 F)2021-06-16
EnshiRecord high minimum temperature25.3 C (77.5 F)2021-06-16
Thanh HoaRecord high minimum temperature31.1 C (88.0 F)2021-06-21
DongtaiRecord high maximum temperature36.7 C (98.1 F)2021-06-06
GarzeRecord high maximum temperature28.5 C (83.3 F)2021-06-15
ShaoguanRecord high minimum temperature28.5 C (83.3 F)2021-06-19
JiexiuRecord high minimum temperature20.4 C (68.7 F)2021-06-13
WuhanRecord high minimum temperature28.7 C (83.7 F)2021-06-14
ZhengzhouRecord high minimum temperature24.7 C (76.5 F)2021-06-11
LushiRecord high minimum temperature21.5 C (70.7 F)2021-06-12
BaiseRecord high minimum temperature28.2 C (82.8 F)2021-06-17
BarkamRecord high maximum temperature33.5 C (92.3 F)2021-06-16
KunmingRecord high maximum temperature29.2 C (84.6 F)2021-06-17
GuiyangRecord high minimum temperature22.7 C (72.9 F)2021-06-17
LincangRecord high maximum temperature29.9 C (85.8 F)2021-06-22

Records per Day

Peak day 21
Records per day during Heat wave in China and 2 other countries, 5 to 23 June 2021 Records set or tied each day from 5 June 2021 to 23 June 2021. The most in one day was 21 on 18 June 2021. 0 6 13 19 25 06-0506-0706-0906-1106-1306-1506-1706-1906-2106-23
Records set or tied each day from 5 June 2021 to 23 June 2021. The most in one day was 21 on 18 June 2021.
Records per day during Heat wave in China and 2 other countries, 5 to 23 June 2021
DateRecords
2021-06-051
2021-06-067
2021-06-0710
2021-06-087
2021-06-093
2021-06-103
2021-06-114
2021-06-127
2021-06-137
2021-06-148
2021-06-1520
2021-06-1618
2021-06-1717
2021-06-1821
2021-06-1915
2021-06-2020
2021-06-2116
2021-06-227
2021-06-231

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in China and 2 other countries, 5 to 23 June 2021 ranked by margin
Dongtai, 06-063.3 C (5.9 F)
Darlag, 06-162.8 C (5.0 F)
Wuhan, 06-142.6 C (4.7 F)
Jiexiu, 06-131.8 C (3.2 F)
Enshi, 06-161.6 C (2.9 F)
Lushi, 06-121.4 C (2.5 F)
Heyuan, 06-191.2 C (2.2 F)
Garze, 06-151.2 C (2.2 F)
Zhengzhou, 06-111.2 C (2.2 F)
Lincang, 06-221.1 C (2.0 F)
Barkam, 06-160.9 C (1.6 F)
Longzhou, 06-200.8 C (1.4 F)
Heyuan, 06-180.8 C (1.4 F)
Shaoguan, 06-190.8 C (1.4 F)
Baise, 06-170.6 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 China and 2 other countries, 5 to 23 June 2021 192 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 0.01.32.53.85.0 Margin (C) Years the old record stood
192 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 China and 2 other countries, 5 to 23 June 2021
Margin (C)Years the old record stood
0.853
1.268
2.860
1.660
0.868
0.423
1.270
3.354
0.868
1.860
2.648
1.462
1.260
0.666
0.668
0.968
0.368
0.568
1.160
0.467
2.355
0.367
0.467
0.567
1.754
0.267
0.954
0.560
4.214
2.540
0.656
0.860
2.044
0.360
0.816
2.040
0.458
0.454
1.447
0.454
0.354
0.751
0.260
0.256
0.848
0.154
0.648
0.154
0.848
0.519
0.448
0.744
0.844
0.548
0.454
1.044
0.251
0.644
0.444
0.348
1.428
0.640
2.028
1.040
1.139
0.150
0.840
0.244
1.132
1.230
0.144
0.123
1.328
0.540
0.730
1.632
1.032
1.620
0.640
1.911
0.41
0.439
0.528
0.140
1.232
0.732
1.324
0.630
0.240
0.336
0.430
1.126
0.932
1.812
1.120
0.30
0.730
2.116
0.232
0.623
0.238
0.623
0.232
0.922
0.623
0.812
0.326
0.823
1.98
0.322
1.60
1.312
0.819
0.719
1.316
1.310
0.224
0.222
1.012
1.17
0.519
0.511
1.70
0.123
0.715
1.70
0.119
1.38
0.912
0.619
0.119
0.612
1.08
0.86
0.910
1.30
0.416
0.510
0.119
1.20
0.57
0.516
1.20
0.215
0.88
0.78
0.612
1.80
0.110
0.112
0.90
0.115
0.410
0.312
0.27
0.56
0.62
0.210
0.312
0.50
0.46
0.60
0.70
0.26
0.66
0.511
1.13
0.18
0.28
0.42
0.30
0.36
0.30
0.40
0.60
0.40
0.60
0.40
0.16
0.16
0.22
0.211
0.30
0.40
0.12
0.14
0.24
0.30
0.10
0.30
0.30
0.12

Compared With Other Events

Station records per event
Station records in Heat wave in China and 2 other countries, 5 to 23 June 2021 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 China and 2 other countries, 5 to 23 June 2021 (this event)192 records

Every Record Set

20 of 192
Every record set or tied during Heat wave in China and 2 other countries, 5 to 23 June 2021, in date order
DateStationRecordValueMarginYears stoodSignificance
2021-06-06DongtaiRecord high maximum temperature36.7 C (98.1 F)3.3 C (5.9 F)5431 of 100 (Routine)
2021-06-11ZhengzhouRecord high minimum temperature24.7 C (76.5 F)1.2 C (2.2 F)6029 of 100 (Routine)
2021-06-12LushiRecord high minimum temperature21.5 C (70.7 F)1.4 C (2.5 F)6229 of 100 (Routine)
2021-06-13JiexiuRecord high minimum temperature20.4 C (68.7 F)1.8 C (3.2 F)6030 of 100 (Routine)
2021-06-14WuhanRecord high minimum temperature28.7 C (83.7 F)2.6 C (4.7 F)4830 of 100 (Routine)
2021-06-15GarzeRecord high maximum temperature28.5 C (83.3 F)1.2 C (2.2 F)7031 of 100 (Routine)
2021-06-16DarlagRecord high maximum temperature22.0 C (71.6 F)2.8 C (5.0 F)6032 of 100 (Routine)
2021-06-16EnshiRecord high minimum temperature25.3 C (77.5 F)1.6 C (2.9 F)6032 of 100 (Routine)
2021-06-16BarkamRecord high maximum temperature33.5 C (92.3 F)0.9 C (1.6 F)6828 of 100 (Routine)
2021-06-17BaiseRecord high minimum temperature28.2 C (82.8 F)0.6 C (1.1 F)6629 of 100 (Routine)
2021-06-17BarkamRecord high minimum temperature13.6 C (56.5 F)0.6 C (1.1 F)6828 of 100 (Routine)
2021-06-17KunmingRecord high maximum temperature29.2 C (84.6 F)0.5 C (0.9 F)6828 of 100 (Routine)
2021-06-17GuiyangRecord high minimum temperature22.7 C (72.9 F)0.4 C (0.7 F)6728 of 100 (Routine)
2021-06-18HeyuanRecord high minimum temperature28.1 C (82.6 F)0.8 C (1.4 F)6832 of 100 (Routine)
2021-06-18KunmingRecord high maximum temperature29.0 C (84.2 F)0.3 C (0.5 F)6828 of 100 (Routine)
2021-06-19HeyuanRecord high minimum temperature28.2 C (82.8 F)1.2 C (2.2 F)6834 of 100 (Routine)
2021-06-19ShaoguanRecord high minimum temperature28.5 C (83.3 F)0.8 C (1.4 F)6831 of 100 (Routine)
2021-06-20LongzhouRecord high maximum temperature40.1 C (104.2 F)0.8 C (1.4 F)5335 of 100 (Notable)
2021-06-21Thanh HoaRecord high minimum temperature31.1 C (88.0 F)0.4 C (0.7 F)2332 of 100 (Routine)
2021-06-22LincangRecord high maximum temperature29.9 C (85.8 F)1.1 C (2.0 F)6028 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 192 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.