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Built 2026-10-19 (19 October 2026)

Heat wave in Australia, 3 to 18 April 2023

Heat wave in Australia, 3 to 18 April 2023: 138 records at 43 stations, peak on 13 April 2023. Closed.

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

Key Facts

  • Heat wave in Australia, 3 to 18 April 2023 set or tied 138 station records at 43 stations.
  • It ran from 3 April 2023 to 18 April 2023 (16 days) and its peak day was 13 April 2023.
  • Status: closed.
  • Rockhampton Aero set a monthly record high maximum temperature of 36.6 C (97.9 F) on 13 April 2023.
  • The busiest day was 13 April 2023 with 25 records.
  • The oldest broken record in the ranked list had stood for 81 years.

Footprint

3 to 18 April 2023
Footprint of Heat wave in Australia, 3 to 18 April 2023 The area covered by Heat wave in Australia, 3 to 18 April 2023 is outlined, with 12 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Australia, 3 to 18 April 2023 is outlined, with 12 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Australia, 3 to 18 April 2023: stations that set records in the event
StationTypeValueDate
Rockhampton AeroRecord high maximum temperature36.6 C (97.9 F)2023-04-13
Mackay AeroRecord high maximum temperature33.6 C (92.5 F)2023-04-08
Ayr Dpi Research STNRecord high minimum temperature25.4 C (77.7 F)2023-04-08
Cairns AeroRecord high maximum temperature32.2 C (90.0 F)2023-04-11
South Johnstone Exp STNRecord high maximum temperature34.6 C (94.3 F)2023-04-08
Bundaberg AeroRecord high maximum temperature31.2 C (88.2 F)2023-04-13
Gladstone RadarRecord high maximum temperature33.0 C (91.4 F)2023-04-08
Low Isles LighthouseRecord high maximum temperature35.8 C (96.4 F)2023-04-15
Walkamin Research StationRecord high maximum temperature32.0 C (89.6 F)2023-04-16
Cape Moreton LighthouseRecord high minimum temperature23.3 C (73.9 F)2023-04-17
Double Island Point LighthouseRecord high minimum temperature22.9 C (73.2 F)2023-04-17
Collinsville Post OfficeRecord high minimum temperature23.9 C (75.0 F)2023-04-08

Records per Day

Peak day 25
Records per day during Heat wave in Australia, 3 to 18 April 2023 Records set or tied each day from 3 April 2023 to 18 April 2023. The most in one day was 25 on 13 April 2023. 0 6 13 19 25 04-0304-0504-0704-0904-1104-1304-1504-17
Records set or tied each day from 3 April 2023 to 18 April 2023. The most in one day was 25 on 13 April 2023.
Records per day during Heat wave in Australia, 3 to 18 April 2023
DateRecords
2023-04-031
2023-04-041
2023-04-055
2023-04-064
2023-04-078
2023-04-0820
2023-04-097
2023-04-105
2023-04-114
2023-04-1212
2023-04-1325
2023-04-146
2023-04-157
2023-04-1617
2023-04-1714
2023-04-182

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Australia, 3 to 18 April 2023 ranked by margin
South Johnstone Exp STN, 04-152.7 C (4.9 F)
Ayr Dpi Research STN, 04-082.6 C (4.7 F)
South Johnstone Exp STN, 04-082.6 C (4.7 F)
Walkamin Research Station, 04-162.5 C (4.5 F)
Mackay Aero, 04-132.4 C (4.3 F)
Cairns Aero, 04-152.4 C (4.3 F)
Low Isles Lighthouse, 04-142.4 C (4.3 F)
Low Isles Lighthouse, 04-162.4 C (4.3 F)
Ayr Dpi Research STN, 04-142.3 C (4.1 F)
Collinsville Post Office, 04-082.2 C (4.0 F)
Bundaberg Aero, 04-131.6 C (2.9 F)
Walkamin Research Station, 04-151.5 C (2.7 F)
Rockhampton Aero, 04-131.2 C (2.2 F)
Gladstone Radar, 04-081.2 C (2.2 F)
Cape Moreton Lighthouse, 04-171.1 C (2.0 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, 3 to 18 April 2023 138 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 0.01.32.53.85.0 Margin (C) Years the old record stood
138 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, 3 to 18 April 2023
Margin (C)Years the old record stood
1.281
0.771
2.670
2.361
0.570
2.426
2.634
1.653
2.420
0.735
2.537
1.056
1.256
2.426
2.426
1.553
2.726
1.154
0.761
2.248
0.561
1.253
1.724
0.335
1.144
0.261
1.144
2.524
2.326
1.454
0.744
0.456
0.516
0.725
0.944
0.840
2.38
1.528
0.354
0.945
1.024
1.426
1.526
1.426
2.32
2.06
0.254
1.134
0.240
1.034
1.026
1.728
0.637
1.334
0.632
1.226
0.834
3.222
0.27
0.829
0.240
4.418
0.922
0.328
0.826
0.140
0.732
2.21
1.130
0.420
0.20
1.30
0.726
1.312
0.620
0.924
0.826
0.336
0.428
1.117
1.126
0.732
0.228
0.513
0.129
0.826
0.129
0.129
0.716
1.824
1.31
0.512
0.920
0.224
0.424
0.66
1.42
0.132
1.010
1.018
0.116
1.12
0.82
0.524
0.213
0.124
0.224
0.222
0.30
0.48
0.71
0.31
0.28
0.112
0.84
0.216
0.10
0.116
0.34
0.18
0.24
0.310
0.79
0.50
0.90
0.94
0.14
0.71
0.21
0.61
0.112
0.82
0.54
0.70
0.51
0.42
0.10
0.10

Compared With Other Events

Station records per event
Station records in Heat wave in Australia, 3 to 18 April 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, 3 to 18 April 2023 (this event)138 records

Every Record Set

20 of 138
Every record set or tied during Heat wave in Australia, 3 to 18 April 2023, in date order
DateStationRecordValueMarginYears stoodSignificance
2023-04-08Mackay AeroRecord high maximum temperature33.6 C (92.5 F)0.7 C (1.3 F)7142 of 100 (Notable)
2023-04-08Ayr Dpi Research STNRecord high minimum temperature25.4 C (77.7 F)2.6 C (4.7 F)7039 of 100 (Notable)
2023-04-08South Johnstone Exp STNRecord high maximum temperature34.6 C (94.3 F)2.6 C (4.7 F)3430 of 100 (Routine)
2023-04-08Rockhampton AeroRecord high maximum temperature34.7 C (94.5 F)1.0 C (1.8 F)5629 of 100 (Routine)
2023-04-08Gladstone RadarRecord high maximum temperature33.0 C (91.4 F)1.2 C (2.2 F)5629 of 100 (Routine)
2023-04-08Collinsville Post OfficeRecord high minimum temperature23.9 C (75.0 F)2.2 C (4.0 F)4827 of 100 (Routine)
2023-04-11Cairns AeroRecord high maximum temperature32.2 C (90.0 F)0.5 C (0.9 F)7032 of 100 (Routine)
2023-04-13Rockhampton AeroRecord high maximum temperature36.6 C (97.9 F)1.2 C (2.2 F)8147 of 100 (Notable)
2023-04-13Mackay AeroRecord high maximum temperature33.3 C (91.9 F)2.4 C (4.3 F)2631 of 100 (Routine)
2023-04-13Bundaberg AeroRecord high maximum temperature31.2 C (88.2 F)1.6 C (2.9 F)5330 of 100 (Routine)
2023-04-14Ayr Dpi Research STNRecord high maximum temperature34.5 C (94.1 F)2.3 C (4.1 F)6139 of 100 (Notable)
2023-04-14Low Isles LighthouseRecord high maximum temperature34.9 C (94.8 F)2.4 C (4.3 F)2628 of 100 (Routine)
2023-04-15Cairns AeroRecord high maximum temperature34.5 C (94.1 F)2.4 C (4.3 F)2029 of 100 (Routine)
2023-04-15Low Isles LighthouseRecord high maximum temperature35.8 C (96.4 F)0.7 C (1.3 F)3529 of 100 (Routine)
2023-04-15Walkamin Research StationRecord high maximum temperature32.1 C (89.8 F)1.5 C (2.7 F)5328 of 100 (Routine)
2023-04-15South Johnstone Exp STNRecord high maximum temperature34.8 C (94.6 F)2.7 C (4.9 F)2628 of 100 (Routine)
2023-04-16Walkamin Research StationRecord high maximum temperature32.0 C (89.6 F)2.5 C (4.5 F)3729 of 100 (Routine)
2023-04-16Low Isles LighthouseRecord high maximum temperature35.6 C (96.1 F)2.4 C (4.3 F)2628 of 100 (Routine)
2023-04-17Cape Moreton LighthouseRecord high minimum temperature23.3 C (73.9 F)1.1 C (2.0 F)5428 of 100 (Routine)
2023-04-17Double Island Point LighthouseRecord high minimum temperature22.9 C (73.2 F)0.7 C (1.3 F)6128 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 138 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.