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Built 2026-10-19 (19 October 2026)

Heat wave in Thailand and Vietnam, 9 to 18 August 2026

Heat wave in Thailand and Vietnam, 9 to 18 August 2026: 20 records at 8 stations, peak on 17 August 2026. Closed.

Data as of . Last revised (2026-10-18).

Key Facts

  • Heat wave in Thailand and Vietnam, 9 to 18 August 2026 set or tied 20 station records at 8 stations.
  • It ran from 9 August 2026 to 18 August 2026 (10 days) and its peak day was 17 August 2026.
  • Status: closed.
  • Kanchanaburi set a daily record high minimum temperature of 27.2 C (81.0 F) on 18 August 2026.
  • The busiest day was 16 August 2026 with 4 records.
  • The oldest broken record in the ranked list had stood for 67 years.

Footprint

9 to 18 August 2026
Footprint of Heat wave in Thailand and Vietnam, 9 to 18 August 2026 The area covered by Heat wave in Thailand and Vietnam, 9 to 18 August 2026 is outlined, with 8 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Thailand and Vietnam, 9 to 18 August 2026 is outlined, with 8 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Thailand and Vietnam, 9 to 18 August 2026: stations that set records in the event
StationTypeValueDate
KanchanaburiRecord high minimum temperature27.2 C (81.0 F)2026-08-18
UttaraditRecord high maximum temperature37.2 C (99.0 F)2026-08-14
Bangkok MetropolisRecord high minimum temperature28.6 C (83.5 F)2026-08-14
MukdahanRecord high minimum temperature27.0 C (80.6 F)2026-08-16
Suphan BuriRecord high minimum temperature27.0 C (80.6 F)2026-08-15
SurinRecord high minimum temperature27.0 C (80.6 F)2026-08-16
Dong HoiRecord high minimum temperature30.6 C (87.1 F)2026-08-11
Thanh HoaRecord high minimum temperature28.1 C (82.6 F)2026-08-16

Records per Day

Peak day 4
Records per day during Heat wave in Thailand and Vietnam, 9 to 18 August 2026 Records set or tied each day from 9 August 2026 to 18 August 2026. The most in one day was 4 on 16 August 2026. 0 1 2 3 4 08-0908-1108-1208-1308-1408-1508-1608-1708-18
Records set or tied each day from 9 August 2026 to 18 August 2026. The most in one day was 4 on 16 August 2026.
Records per day during Heat wave in Thailand and Vietnam, 9 to 18 August 2026
DateRecords
2026-08-091
2026-08-112
2026-08-121
2026-08-133
2026-08-142
2026-08-151
2026-08-164
2026-08-174
2026-08-182

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Thailand and Vietnam, 9 to 18 August 2026 ranked by margin
Kanchanaburi, 08-181.0 C (1.8 F)
Bangkok Metropolis, 08-140.8 C (1.4 F)
Bangkok Metropolis, 08-170.7 C (1.3 F)
Mukdahan, 08-160.7 C (1.3 F)
Surin, 08-170.6 C (1.1 F)
Suphan Buri, 08-180.6 C (1.1 F)
Bangkok Metropolis, 08-130.6 C (1.1 F)
Mukdahan, 08-170.5 C (0.9 F)
Suphan Buri, 08-160.5 C (0.9 F)
Uttaradit, 08-140.4 C (0.7 F)
Suphan Buri, 08-170.4 C (0.7 F)
Dong Hoi, 08-110.3 C (0.5 F)
Surin, 08-130.3 C (0.5 F)
Bangkok Metropolis, 08-090.3 C (0.5 F)
Suphan Buri, 08-150.2 C (0.4 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 Thailand and Vietnam, 9 to 18 August 2026 20 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 0.00.30.50.81.0 Margin (C) Years the old record stood
20 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 Vietnam, 9 to 18 August 2026
Margin (C)Years the old record stood
1.057
0.467
0.839
0.739
0.725
0.239
0.428
0.21
0.332
0.511
0.57
0.69
0.61
0.68
0.38
0.28
0.19
0.30
0.23
0.112

Compared With Other Events

Station records per event
Station records in Heat wave in Thailand and Vietnam, 9 to 18 August 2026 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 Vietnam, 9 to 18 August 2026 (this event)20 records

Every Record Set

24 of 20
Every record set or tied during Heat wave in Thailand and Vietnam, 9 to 18 August 2026, in date order
DateStationRecordValueMarginYears stoodSignificance
2026-08-09Bangkok MetropolisRecord high minimum temperature28.3 C (82.9 F)0.3 C (0.5 F)09 of 100 (Routine)
2026-08-11Dong HoiRecord high minimum temperature30.6 C (87.1 F)0.3 C (0.5 F)3215 of 100 (Routine)
2026-08-11SurinRecord high minimum temperature25.8 C (78.4 F)0.2 C (0.4 F)38 of 100 (Routine)
2026-08-11Bangkok MetropolisRecord high minimum temperature (tie)27.8 C (82.0 F)tie01 of 100 (Routine)
2026-08-12UttaraditRecord high minimum temperature26.0 C (78.8 F)0.1 C (0.2 F)89 of 100 (Routine)
2026-08-12SurinRecord high minimum temperature25.9 C (78.6 F)0.1 C (0.2 F)99 of 100 (Routine)
2026-08-13Bangkok MetropolisRecord high minimum temperature28.1 C (82.6 F)0.6 C (1.1 F)813 of 100 (Routine)
2026-08-13SurinRecord high minimum temperature26.7 C (80.1 F)0.3 C (0.5 F)811 of 100 (Routine)
2026-08-13MukdahanRecord high minimum temperature27.5 C (81.5 F)0.2 C (0.4 F)810 of 100 (Routine)
2026-08-14UttaraditRecord high maximum temperature37.2 C (99.0 F)0.4 C (0.7 F)6728 of 100 (Routine)
2026-08-14Bangkok MetropolisRecord high minimum temperature28.6 C (83.5 F)0.8 C (1.4 F)3924 of 100 (Routine)
2026-08-15Suphan BuriRecord high minimum temperature27.0 C (80.6 F)0.2 C (0.4 F)3920 of 100 (Routine)
2026-08-16MukdahanRecord high minimum temperature27.0 C (80.6 F)0.7 C (1.3 F)2520 of 100 (Routine)
2026-08-16SurinRecord high minimum temperature27.0 C (80.6 F)0.2 C (0.4 F)118 of 100 (Routine)
2026-08-16Suphan BuriRecord high minimum temperature27.0 C (80.6 F)0.5 C (0.9 F)714 of 100 (Routine)
2026-08-16Thanh HoaRecord high minimum temperature28.1 C (82.6 F)0.1 C (0.2 F)128 of 100 (Routine)
2026-08-16Bangkok MetropolisRecord high minimum temperature (tie)28.8 C (83.8 F)tie04 of 100 (Routine)
2026-08-17Bangkok MetropolisRecord high minimum temperature28.1 C (82.6 F)0.7 C (1.3 F)3923 of 100 (Routine)
2026-08-17Suphan BuriRecord high minimum temperature26.5 C (79.7 F)0.4 C (0.7 F)2819 of 100 (Routine)
2026-08-17MukdahanRecord high minimum temperature27.5 C (81.5 F)0.5 C (0.9 F)1114 of 100 (Routine)
2026-08-17SurinRecord high minimum temperature26.6 C (79.9 F)0.6 C (1.1 F)914 of 100 (Routine)
2026-08-18KanchanaburiRecord high minimum temperature27.2 C (81.0 F)1.0 C (1.8 F)5733 of 100 (Routine)
2026-08-18Suphan BuriRecord high minimum temperature27.0 C (80.6 F)0.6 C (1.1 F)113 of 100 (Routine)
2026-08-18UttaraditRecord high minimum temperature (tie)26.2 C (79.2 F)tie31 of 100 (Routine)

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 2026-10-18. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.