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Built 2026-10-19 (19 October 2026)

Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019

Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019: 132 records at 47 stations, peak on 3 May 2019. Closed.

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

Key Facts

  • Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019 set or tied 132 station records at 47 stations.
  • It ran from 26 April 2019 to 14 May 2019 (19 days) and its peak day was 3 May 2019.
  • Status: closed.
  • Chiang Rai set a daily record high minimum temperature of 26.2 C (79.2 F) on 9 May 2019.
  • The busiest day was 3 May 2019 with 21 records.
  • The oldest broken record in the ranked list had stood for 70 years.

Footprint

26 April to 14 May 2019
Footprint of Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019 The area covered by Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019 is outlined, with 15 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019 is outlined, with 15 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019: stations that set records in the event
StationTypeValueDate
Chiang RaiRecord high minimum temperature26.2 C (79.2 F)2019-05-09
Chiang MaiRecord high minimum temperature27.8 C (82.0 F)2019-05-04
SongkhlaRecord high maximum temperature36.1 C (97.0 F)2019-05-05
Mae SariangRecord high minimum temperature27.3 C (81.1 F)2019-05-11
ChumphonRecord high maximum temperature38.3 C (100.9 F)2019-05-03
Mae SotRecord high minimum temperature27.0 C (80.6 F)2019-05-08
Lop BuriRecord high minimum temperature29.3 C (84.7 F)2019-05-03
UttaraditRecord high maximum temperature43.0 C (109.4 F)2019-05-04
Bangkok MetropolisRecord high maximum temperature39.3 C (102.7 F)2019-05-04
SitiawanRecord high maximum temperature35.4 C (95.7 F)2019-05-03
Sultan Ismail PetraRecord high maximum temperature35.5 C (95.9 F)2019-05-06
Mae Hong SonRecord high minimum temperature27.5 C (81.5 F)2019-05-09
SattahipRecord high minimum temperature29.8 C (85.6 F)2019-05-10
Sultan Abdul Aziz Shah IntlRecord high maximum temperature35.3 C (95.5 F)2019-04-29
Sultan Mahmud Badaruddin IIRecord high minimum temperature26.6 C (79.9 F)2019-04-30

Records per Day

Peak day 21
Records per day during Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019 Records set or tied each day from 26 April 2019 to 14 May 2019. The most in one day was 21 on 3 May 2019. 0 6 13 19 25 04-2604-2905-0105-0305-0505-0705-0905-1105-13
Records set or tied each day from 26 April 2019 to 14 May 2019. The most in one day was 21 on 3 May 2019.
Records per day during Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019
DateRecords
2019-04-261
2019-04-283
2019-04-295
2019-04-306
2019-05-018
2019-05-0215
2019-05-0321
2019-05-0413
2019-05-0512
2019-05-069
2019-05-077
2019-05-088
2019-05-098
2019-05-105
2019-05-114
2019-05-124
2019-05-132
2019-05-141

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019 ranked by margin
Chiang Mai, 05-042.4 C (4.3 F)
Chiang Rai, 05-091.9 C (3.4 F)
Chiang Rai, 05-031.8 C (3.2 F)
Chiang Rai, 05-021.3 C (2.3 F)
Mae Sariang, 05-111.3 C (2.3 F)
Songkhla, 05-051.1 C (2.0 F)
Bangkok Metropolis, 05-041.0 C (1.8 F)
Sitiawan, 05-031.0 C (1.8 F)
Chiang Rai, 05-071.0 C (1.8 F)
Lop Buri, 05-030.8 C (1.4 F)
Sultan Mahmud Badaruddin II, 04-300.8 C (1.4 F)
Mae Sot, 05-080.7 C (1.3 F)
Uttaradit, 05-040.6 C (1.1 F)
Sattahip, 05-100.6 C (1.1 F)
Sultan Ismail Petra, 05-060.5 C (0.9 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 Thailand and 4 other countries, 26 April to 14 May 2019 132 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 0.00.61.31.92.5 Margin (C) Years the old record stood
132 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 Thailand and 4 other countries, 26 April to 14 May 2019
Margin (C)Years the old record stood
1.958
2.440
1.170
1.366
1.364
0.126
0.160
0.758
0.666
0.858
1.058
1.045
0.556
0.368
0.660
1.824
0.812
0.356
1.040
0.358
0.264
1.430
1.449
1.629
0.446
0.446
0.949
0.158
0.158
0.444
0.540
1.129
0.540
1.124
0.445
0.638
0.840
0.340
1.020
1.18
0.540
0.938
1.336
0.149
1.226
0.116
0.716
0.340
0.140
0.240
0.240
0.38
0.336
0.140
1.620
0.438
0.824
0.529
0.720
0.424
0.529
0.138
0.138
0.720
1.225
1.024
1.04
0.620
0.425
0.529
0.612
0.420
0.68
0.326
0.328
0.326
0.828
0.521
0.320
0.813
0.82
0.226
0.98
0.820
1.02
0.621
0.124
0.420
0.72
0.78
0.326
0.614
0.84
0.513
0.120
0.221
0.324
1.76
0.220
0.85
0.64
0.66
0.81
1.02
0.216
0.413
0.68
0.113
0.74
0.64
1.19
1.19
1.06
0.45
0.52
0.34
0.81
0.28
0.61
0.62
0.28
0.18
0.24
0.65
0.12
0.22
0.14
0.65
0.22
0.12
0.38
0.14

Compared With Other Events

Station records per event
Station records in Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019 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 Thailand and 4 other countries, 26 April to 14 May 2019 (this event)132 records

Every Record Set

20 of 132
Every record set or tied during Heat wave in Thailand and 4 other countries, 26 April to 14 May 2019, in date order
DateStationRecordValueMarginYears stoodSignificance
2019-04-29Sultan Abdul Aziz Shah IntlRecord high maximum temperature35.3 C (95.5 F)0.3 C (0.5 F)5625 of 100 (Routine)
2019-04-30Sultan Mahmud Badaruddin IIRecord high minimum temperature26.6 C (79.9 F)0.8 C (1.4 F)1225 of 100 (Routine)
2019-04-30Chiang MaiRecord high minimum temperature26.7 C (80.1 F)0.3 C (0.5 F)5825 of 100 (Routine)
2019-05-02Chiang RaiRecord high minimum temperature25.6 C (78.1 F)1.3 C (2.3 F)6635 of 100 (Notable)
2019-05-03ChumphonRecord high maximum temperature38.3 C (100.9 F)0.1 C (0.2 F)6034 of 100 (Routine)
2019-05-03Lop BuriRecord high minimum temperature29.3 C (84.7 F)0.8 C (1.4 F)5828 of 100 (Routine)
2019-05-03SitiawanRecord high maximum temperature35.4 C (95.7 F)1.0 C (1.8 F)4527 of 100 (Routine)
2019-05-03Chiang RaiRecord high minimum temperature26.0 C (78.8 F)1.8 C (3.2 F)2426 of 100 (Routine)
2019-05-04Chiang MaiRecord high minimum temperature27.8 C (82.0 F)2.4 C (4.3 F)4036 of 100 (Notable)
2019-05-04UttaraditRecord high maximum temperature43.0 C (109.4 F)0.6 C (1.1 F)6628 of 100 (Routine)
2019-05-04Bangkok MetropolisRecord high maximum temperature39.3 C (102.7 F)1.0 C (1.8 F)5828 of 100 (Routine)
2019-05-05SongkhlaRecord high maximum temperature36.1 C (97.0 F)1.1 C (2.0 F)7036 of 100 (Notable)
2019-05-06Sultan Ismail PetraRecord high maximum temperature35.5 C (95.9 F)0.5 C (0.9 F)5627 of 100 (Routine)
2019-05-07Chiang RaiRecord high minimum temperature26.0 C (78.8 F)1.0 C (1.8 F)4025 of 100 (Routine)
2019-05-08Mae SotRecord high minimum temperature27.0 C (80.6 F)0.7 C (1.3 F)5829 of 100 (Routine)
2019-05-09Chiang RaiRecord high minimum temperature26.2 C (79.2 F)1.9 C (3.4 F)5837 of 100 (Notable)
2019-05-09Mae Hong SonRecord high minimum temperature27.5 C (81.5 F)0.3 C (0.5 F)6827 of 100 (Routine)
2019-05-10Chiang RaiRecord high minimum temperature27.0 C (80.6 F)0.1 C (0.2 F)2634 of 100 (Routine)
2019-05-10SattahipRecord high minimum temperature29.8 C (85.6 F)0.6 C (1.1 F)6027 of 100 (Routine)
2019-05-11Mae SariangRecord high minimum temperature27.3 C (81.1 F)1.3 C (2.3 F)6435 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 132 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.