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Built 2026-10-19 (19 October 2026)

Heat wave in Australia, 23 to 31 July 2018

Heat wave in Australia, 23 to 31 July 2018: 121 records at 77 stations, peak on 27 July 2018. Closed.

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

Key Facts

  • Heat wave in Australia, 23 to 31 July 2018 set or tied 121 station records at 77 stations.
  • It ran from 23 July 2018 to 31 July 2018 (9 days) and its peak day was 27 July 2018.
  • Status: closed.
  • Adelaide West Terrace set a daily record high minimum temperature of 12.5 C (54.5 F) on 23 July 2018.
  • The busiest day was 27 July 2018 with 36 records.
  • The oldest broken record in the ranked list had stood for 88 years.

Footprint

23 to 31 July 2018
Footprint of Heat wave in Australia, 23 to 31 July 2018 The area covered by Heat wave in Australia, 23 to 31 July 2018 is outlined, with 18 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Australia, 23 to 31 July 2018 is outlined, with 18 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Australia, 23 to 31 July 2018: stations that set records in the event
StationTypeValueDate
Adelaide West TerraceRecord high minimum temperature12.5 C (54.5 F)2018-07-23
Ceduna Post OfficeRecord high maximum temperature25.3 C (77.5 F)2018-07-26
Barraba Post OfficeRecord high maximum temperature25.1 C (77.2 F)2018-07-25
Essendon AirportRecord high maximum temperature18.5 C (65.3 F)2018-07-27
Charleville AeroRecord high minimum temperature14.0 C (57.2 F)2018-07-29
Sydney Airport AMORecord high maximum temperature26.3 C (79.3 F)2018-07-29
Amberley AMORecord high maximum temperature27.8 C (82.0 F)2018-07-28
Gabo Island LighthouseRecord high maximum temperature17.4 C (63.3 F)2018-07-27
Mildura AirportRecord high minimum temperature10.9 C (51.6 F)2018-07-28
Wellington (Agrowplow)Record high maximum temperature22.5 C (72.5 F)2018-07-25
Katoomba (Murri St)Record high maximum temperature16.2 C (61.2 F)2018-07-28
Archerfield AirportRecord high maximum temperature26.9 C (80.4 F)2018-07-29
Gunnedah Resource CentreRecord high maximum temperature23.1 C (73.6 F)2018-07-27
Inverell Research CentreRecord high maximum temperature21.1 C (70.0 F)2018-07-26
University of Queensland GattoRecord high maximum temperature28.4 C (83.1 F)2018-07-29
Mount BarkerRecord high minimum temperature10.7 C (51.3 F)2018-07-23
Mount Gambier Post OfficeRecord high maximum temperature19.0 C (66.2 F)2018-07-27
Cobar MoRecord high minimum temperature13.5 C (56.3 F)2018-07-28

Records per Day

Peak day 36
Records per day during Heat wave in Australia, 23 to 31 July 2018 Records set or tied each day from 23 July 2018 to 31 July 2018. The most in one day was 36 on 27 July 2018. 0 10 20 30 40 07-2307-2407-2507-2607-2707-2807-2907-3007-31
Records set or tied each day from 23 July 2018 to 31 July 2018. The most in one day was 36 on 27 July 2018.
Records per day during Heat wave in Australia, 23 to 31 July 2018
DateRecords
2018-07-2310
2018-07-247
2018-07-2514
2018-07-2612
2018-07-2736
2018-07-2823
2018-07-2917
2018-07-301
2018-07-311

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Australia, 23 to 31 July 2018 ranked by margin
Cobar Mo, 07-283.0 C (5.4 F)
University of Queensland Gatto, 07-292.1 C (3.8 F)
Ceduna Post Office, 07-262.0 C (3.6 F)
Barraba Post Office, 07-282.0 C (3.6 F)
Barraba Post Office, 07-251.7 C (3.1 F)
Essendon Airport, 07-271.7 C (3.1 F)
Wellington (Agrowplow), 07-251.7 C (3.1 F)
Archerfield Airport, 07-291.6 C (2.9 F)
Charleville Aero, 07-291.3 C (2.3 F)
Adelaide West Terrace, 07-231.2 C (2.2 F)
Gunnedah Resource Centre, 07-271.2 C (2.2 F)
Mount Gambier Post Office, 07-271.2 C (2.2 F)
Inverell Research Centre, 07-260.9 C (1.6 F)
Gabo Island Lighthouse, 07-270.7 C (1.3 F)
Barraba Post Office, 07-260.6 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 Australia, 23 to 31 July 2018 121 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 25 50 75 100 0.00.81.52.33.0 Margin (C) Years the old record stood
121 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 Australia, 23 to 31 July 2018
Margin (C)Years the old record stood
1.288
2.076
1.744
1.757
1.372
0.557
0.460
0.160
0.755
1.632
0.160
1.745
2.043
1.243
2.132
0.948
0.152
1.216
3.021
0.644
1.043
0.343
2.023
1.136
0.743
1.437
0.643
0.843
0.732
0.343
0.243
0.343
0.248
0.343
0.741
1.732
2.220
0.143
0.136
1.425
0.243
0.543
0.336
0.143
1.324
0.528
0.424
0.42
1.332
0.528
0.40
0.523
1.223
1.720
1.620
0.528
0.224
0.328
0.132
0.135
1.516
1.023
1.411
0.320
1.48
1.30
0.220
2.50
0.132
0.721
0.716
0.121
1.116
1.211
1.212
0.520
0.228
0.611
1.24
0.516
0.916
0.321
0.117
1.312
0.516
0.816
1.04
0.128
0.712
1.74
0.317
1.54
0.816
0.124
0.512
0.316
0.116
0.813
1.68
1.34
0.712
0.512
0.417
0.912
0.94
1.08
0.47
0.216
0.411
0.33
0.60
0.44
0.10
0.44
0.10
0.30
0.38
0.60
0.24
0.40
0.33

Compared With Other Events

Station records per event
Station records in Heat wave in Australia, 23 to 31 July 2018 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 Australia, 23 to 31 July 2018 (this event)121 records

Every Record Set

20 of 121
Every record set or tied during Heat wave in Australia, 23 to 31 July 2018, in date order
DateStationRecordValueMarginYears stoodSignificance
2018-07-23Adelaide West TerraceRecord high minimum temperature12.5 C (54.5 F)1.2 C (2.2 F)8841 of 100 (Notable)
2018-07-23Mount BarkerRecord high minimum temperature10.7 C (51.3 F)0.1 C (0.2 F)5221 of 100 (Routine)
2018-07-25Barraba Post OfficeRecord high maximum temperature25.1 C (77.2 F)1.7 C (3.1 F)4433 of 100 (Routine)
2018-07-25Wellington (Agrowplow)Record high maximum temperature22.5 C (72.5 F)1.7 C (3.1 F)4524 of 100 (Routine)
2018-07-26Ceduna Post OfficeRecord high maximum temperature25.3 C (77.5 F)2.0 C (3.6 F)7638 of 100 (Notable)
2018-07-26Inverell Research CentreRecord high maximum temperature21.1 C (70.0 F)0.9 C (1.6 F)4822 of 100 (Routine)
2018-07-26Barraba Post OfficeRecord high maximum temperature23.1 C (73.6 F)0.6 C (1.1 F)4420 of 100 (Routine)
2018-07-27Essendon AirportRecord high maximum temperature18.5 C (65.3 F)1.7 C (3.1 F)5733 of 100 (Routine)
2018-07-27Gabo Island LighthouseRecord high maximum temperature17.4 C (63.3 F)0.7 C (1.3 F)5525 of 100 (Routine)
2018-07-27Gunnedah Resource CentreRecord high maximum temperature23.1 C (73.6 F)1.2 C (2.2 F)4323 of 100 (Routine)
2018-07-27Mount Gambier Post OfficeRecord high maximum temperature19.0 C (66.2 F)1.2 C (2.2 F)1621 of 100 (Routine)
2018-07-28Amberley AMORecord high maximum temperature27.8 C (82.0 F)0.4 C (0.7 F)6026 of 100 (Routine)
2018-07-28Mildura AirportRecord high minimum temperature10.9 C (51.6 F)0.1 C (0.2 F)6025 of 100 (Routine)
2018-07-28Katoomba (Murri St)Record high maximum temperature16.2 C (61.2 F)0.1 C (0.2 F)6024 of 100 (Routine)
2018-07-28Barraba Post OfficeRecord high maximum temperature25.0 C (77.0 F)2.0 C (3.6 F)4323 of 100 (Routine)
2018-07-28Cobar MoRecord high minimum temperature13.5 C (56.3 F)3.0 C (5.4 F)2120 of 100 (Routine)
2018-07-29Charleville AeroRecord high minimum temperature14.0 C (57.2 F)1.3 C (2.3 F)7230 of 100 (Routine)
2018-07-29Sydney Airport AMORecord high maximum temperature26.3 C (79.3 F)0.5 C (0.9 F)5727 of 100 (Routine)
2018-07-29Archerfield AirportRecord high maximum temperature26.9 C (80.4 F)1.6 C (2.9 F)3224 of 100 (Routine)
2018-07-29University of Queensland GattoRecord high maximum temperature28.4 C (83.1 F)2.1 C (3.8 F)3222 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 121 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.