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

Heat wave in Australia, 30 June to 19 July 2023

Heat wave in Australia, 30 June to 19 July 2023: 386 records at 157 stations, peak on 10 July 2023. Closed.

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

Key Facts

  • Heat wave in Australia, 30 June to 19 July 2023 set or tied 386 station records at 157 stations.
  • It ran from 30 June 2023 to 19 July 2023 (20 days) and its peak day was 10 July 2023.
  • Status: closed.
  • Cairns Post Office set a daily record high minimum temperature of 22.9 C (73.2 F) on 4 July 2023.
  • The busiest day was 10 July 2023 with 53 records.
  • The oldest broken record in the ranked list had stood for 129 years.

Footprint

30 June to 19 July 2023
Footprint of Heat wave in Australia, 30 June to 19 July 2023 The area covered by Heat wave in Australia, 30 June to 19 July 2023 is outlined, with 15 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Australia, 30 June to 19 July 2023 is outlined, with 15 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Australia, 30 June to 19 July 2023: stations that set records in the event
StationTypeValueDate
Cairns Post OfficeRecord high minimum temperature22.9 C (73.2 F)2023-07-04
Robe ComparisonRecord high minimum temperature13.0 C (55.4 F)2023-07-11
Bombala (Therry Street)Record high maximum temperature18.6 C (65.5 F)2023-07-13
Essendon AirportRecord high minimum temperature10.0 C (50.0 F)2023-07-09
Hobart (Ellerslie Road)Record high minimum temperature12.8 C (55.0 F)2023-07-14
Gunnedah Resource CentreRecord high maximum temperature22.3 C (72.1 F)2023-07-15
Butlers GorgeRecord high minimum temperature8.4 C (47.1 F)2023-07-13
Mackay AeroRecord high maximum temperature28.2 C (82.8 F)2023-07-06
Rockhampton AeroRecord high maximum temperature30.0 C (86.0 F)2023-07-06
Mount Gambier AeroRecord high maximum temperature17.2 C (63.0 F)2023-07-11
Launceston AirportRecord high maximum temperature15.5 C (59.9 F)2023-07-12
Camden Airport AWSRecord high maximum temperature23.4 C (74.1 F)2023-07-14
Ballarat AerodromeRecord high maximum temperature14.6 C (58.3 F)2023-07-11
Canberra ForestryRecord high maximum temperature16.3 C (61.3 F)2023-07-16
Walkamin Research StationRecord high minimum temperature19.8 C (67.6 F)2023-07-05

Records per Day

Peak day 53
Records per day during Heat wave in Australia, 30 June to 19 July 2023 Records set or tied each day from 30 June 2023 to 19 July 2023. The most in one day was 53 on 10 July 2023. 0 15 30 45 60 06-3007-0207-0407-0607-0807-1007-1207-1407-1607-18
Records set or tied each day from 30 June 2023 to 19 July 2023. The most in one day was 53 on 10 July 2023.
Records per day during Heat wave in Australia, 30 June to 19 July 2023
DateRecords
2023-06-301
2023-07-012
2023-07-025
2023-07-034
2023-07-0417
2023-07-0533
2023-07-0620
2023-07-076
2023-07-085
2023-07-0914
2023-07-1053
2023-07-1136
2023-07-1228
2023-07-1330
2023-07-1439
2023-07-1549
2023-07-1626
2023-07-1711
2023-07-185
2023-07-192

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Australia, 30 June to 19 July 2023 ranked by margin
Bombala (Therry Street), 07-134.4 C (7.9 F)
Hobart (Ellerslie Road), 07-132.8 C (5.0 F)
Camden Airport AWS, 07-142.7 C (4.9 F)
Cairns Post Office, 07-041.8 C (3.2 F)
Hobart (Ellerslie Road), 07-141.7 C (3.1 F)
Gunnedah Resource Centre, 07-151.6 C (2.9 F)
Butlers Gorge, 07-141.6 C (2.9 F)
Rockhampton Aero, 07-061.3 C (2.3 F)
Ballarat Aerodrome, 07-111.3 C (2.3 F)
Essendon Airport, 07-091.1 C (2.0 F)
Launceston Airport, 07-121.1 C (2.0 F)
Mackay Aero, 07-061.0 C (1.8 F)
Butlers Gorge, 07-130.9 C (1.6 F)
Mount Gambier Aero, 07-110.9 C (1.6 F)
Robe Comparison, 07-110.4 C (0.7 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, 30 June to 19 July 2023 386 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
386 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, 30 June to 19 July 2023
Margin (C)Years the old record stood
1.8122
0.4116
0.1129
4.453
1.176
1.762
1.672
2.834
0.943
0.960
1.064
1.360
2.750
0.376
1.165
0.138
1.360
0.273
1.662
0.245
2.049
0.468
0.661
2.136
0.366
0.362
0.865
0.860
3.930
1.642
2.836
3.020
2.342
0.365
1.253
0.154
1.346
0.950
1.150
1.034
1.449
2.320
4.014
0.852
0.753
2.332
2.429
0.529
0.748
1.549
1.342
0.550
2.032
0.945
0.924
0.544
0.510
3.725
0.748
1.720
2.620
1.540
0.546
0.229
0.317
1.520
0.16
0.336
0.214
1.334
1.536
2.614
2.432
1.720
1.236
0.150
0.544
0.48
1.432
0.422
1.924
0.511
0.545
0.434
0.436
0.146
1.036
1.634
0.442
2.020
0.936
1.721
1.232
1.334
1.138
1.532
1.432
2.84
1.236
1.332
1.632
0.734
1.032
0.144
0.336
0.434
2.25
1.414
1.721
0.934
1.320
2.020
0.938
1.821
1.620
1.832
0.440
1.032
0.336
0.533
3.36
0.634
0.836
0.234
1.030
0.829
1.229
1.629
2.220
2.018
1.428
1.632
1.121
0.932
0.832
0.20
0.832
0.932
0.510
0.734
0.836
1.512
0.912
1.817
1.226
0.54
0.136
0.534
2.420
0.534
0.136
1.230
0.330
1.114
1.714
0.234
0.234
0.821
0.430
1.520
1.724
1.132
3.58
0.724
0.829
0.432
0.334
0.134
2.89
1.924
0.29
0.712
0.912
2.26
1.530
0.430
1.324
0.516
1.614
1.120
0.530
0.432
0.329
0.520
1.58
0.334
1.017
0.520
0.720
0.824
0.929
2.26
1.314
0.232
1.618
0.416
1.714
0.929
1.232
1.320

Compared With Other Events

Station records per event
Station records in Heat wave in Australia, 30 June to 19 July 2023 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, 30 June to 19 July 2023 (this event)386 records

Every Record Set

20 of 386
Every record set or tied during Heat wave in Australia, 30 June to 19 July 2023, in date order
DateStationRecordValueMarginYears stoodSignificance
2023-07-04Cairns Post OfficeRecord high minimum temperature22.9 C (73.2 F)1.8 C (3.2 F)12245 of 100 (Notable)
2023-07-05Walkamin Research StationRecord high minimum temperature19.8 C (67.6 F)0.2 C (0.4 F)4528 of 100 (Routine)
2023-07-06Mackay AeroRecord high maximum temperature28.2 C (82.8 F)1.0 C (1.8 F)6431 of 100 (Routine)
2023-07-06Rockhampton AeroRecord high maximum temperature30.0 C (86.0 F)1.3 C (2.3 F)6031 of 100 (Routine)
2023-07-09Essendon AirportRecord high minimum temperature10.0 C (50.0 F)1.1 C (2.0 F)7634 of 100 (Routine)
2023-07-09Essendon AirportRecord high maximum temperature16.5 C (61.7 F)0.3 C (0.5 F)7631 of 100 (Routine)
2023-07-11Robe ComparisonRecord high minimum temperature13.0 C (55.4 F)0.4 C (0.7 F)11641 of 100 (Notable)
2023-07-11Mount Gambier AeroRecord high maximum temperature17.2 C (63.0 F)0.9 C (1.6 F)6031 of 100 (Routine)
2023-07-11Ballarat AerodromeRecord high maximum temperature14.6 C (58.3 F)1.3 C (2.3 F)6030 of 100 (Routine)
2023-07-12Robe ComparisonRecord high minimum temperature12.2 C (54.0 F)0.1 C (0.2 F)12940 of 100 (Notable)
2023-07-12Launceston AirportRecord high maximum temperature15.5 C (59.9 F)1.1 C (2.0 F)6531 of 100 (Routine)
2023-07-13Bombala (Therry Street)Record high maximum temperature18.6 C (65.5 F)4.4 C (7.9 F)5336 of 100 (Notable)
2023-07-13Hobart (Ellerslie Road)Record high maximum temperature19.3 C (66.7 F)2.8 C (5.0 F)3432 of 100 (Routine)
2023-07-13Butlers GorgeRecord high minimum temperature8.4 C (47.1 F)0.9 C (1.6 F)4332 of 100 (Routine)
2023-07-13Hobart (Ellerslie Road)Record high minimum temperature13.0 C (55.4 F)0.1 C (0.2 F)3831 of 100 (Routine)
2023-07-14Hobart (Ellerslie Road)Record high minimum temperature12.8 C (55.0 F)1.7 C (3.1 F)6234 of 100 (Routine)
2023-07-14Camden Airport AWSRecord high maximum temperature23.4 C (74.1 F)2.7 C (4.9 F)5031 of 100 (Routine)
2023-07-14Butlers GorgeRecord high minimum temperature7.7 C (45.9 F)1.6 C (2.9 F)6229 of 100 (Routine)
2023-07-15Gunnedah Resource CentreRecord high maximum temperature22.3 C (72.1 F)1.6 C (2.9 F)7233 of 100 (Routine)
2023-07-16Canberra ForestryRecord high maximum temperature16.3 C (61.3 F)0.2 C (0.4 F)7329 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 386 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.