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Built 2026-10-19 (19 October 2026)

Cold outbreak in Australia, 17 August to 4 September 2018

Cold outbreak in Australia, 17 August to 4 September 2018: 264 records at 135 stations, peak on 30 August 2018. Closed.

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

Key Facts

  • Cold outbreak in Australia, 17 August to 4 September 2018 set or tied 264 station records at 135 stations.
  • It ran from 17 August 2018 to 4 September 2018 (19 days) and its peak day was 30 August 2018.
  • Status: closed.
  • Sydney (Observatory Hill) set a daily record low minimum temperature of 5.2 C (41.4 F) on 29 August 2018.
  • The busiest day was 30 August 2018 with 54 records.
  • The oldest broken record in the ranked list had stood for 146 years.

Footprint

17 August to 4 September 2018
Footprint of Cold outbreak in Australia, 17 August to 4 September 2018 The area covered by Cold outbreak in Australia, 17 August to 4 September 2018 is outlined, with 19 of the stations that set records marked, coloured by record type.
The area covered by Cold outbreak in Australia, 17 August to 4 September 2018 is outlined, with 19 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Cold outbreak in Australia, 17 August to 4 September 2018: stations that set records in the event
StationTypeValueDate
Sydney (Observatory Hill)Record low minimum temperature5.2 C (41.4 F)2018-08-29
Hobart (Ellerslie Road)Record low minimum temperature1.0 C (33.8 F)2018-08-30
Amberley AMORecord low minimum temperature-1.5 C (29.3 F)2018-08-30
East Sale AirportRecord low minimum temperature-4.2 C (24.4 F)2018-08-30
Laverton RaafRecord low minimum temperature-2.1 C (28.2 F)2018-08-29
Ballarat AerodromeRecord low minimum temperature-3.8 C (25.2 F)2018-08-29
Monto TownshipRecord low minimum temperature-2.7 C (27.1 F)2018-08-21
Archerfield AirportRecord low minimum temperature1.5 C (34.7 F)2018-08-21
Corowa AirportRecord low minimum temperature-4.9 C (23.2 F)2018-08-29
Canberra ForestryRecord low minimum temperature-5.5 C (22.1 F)2018-08-17
Mount Gambier Post OfficeRecord low minimum temperature-0.6 C (30.9 F)2018-08-28
Williamtown RaafRecord low minimum temperature0.4 C (32.7 F)2018-08-18
Gladstone RadarRecord low minimum temperature8.0 C (46.4 F)2018-08-22
Richmond RaafRecord low minimum temperature-1.7 C (28.9 F)2018-08-30
Sydney Airport AMORecord low maximum temperature13.8 C (56.8 F)2018-08-27
Bairnsdale AirportRecord low minimum temperature-2.5 C (27.5 F)2018-08-30
Lady Elliot IslandRecord low minimum temperature9.5 C (49.1 F)2018-08-21
MarrawahRecord low minimum temperature0.5 C (32.9 F)2018-08-28
Parramatta North (Masons DriveRecord low minimum temperature1.0 C (33.8 F)2018-08-30

Records per Day

Peak day 54
Records per day during Cold outbreak in Australia, 17 August to 4 September 2018 Records set or tied each day from 17 August 2018 to 4 September 2018. The most in one day was 54 on 30 August 2018. 0 15 30 45 60 08-1708-1908-2108-2308-2508-2708-2909-0109-03
Records set or tied each day from 17 August 2018 to 4 September 2018. The most in one day was 54 on 30 August 2018.
Records per day during Cold outbreak in Australia, 17 August to 4 September 2018
DateRecords
2018-08-171
2018-08-184
2018-08-197
2018-08-2013
2018-08-2132
2018-08-2227
2018-08-2312
2018-08-241
2018-08-251
2018-08-262
2018-08-2710
2018-08-2825
2018-08-2946
2018-08-3054
2018-09-011
2018-09-025
2018-09-0315
2018-09-048

Top Records by Margin

Margin over the record replaced
Top records of Cold outbreak in Australia, 17 August to 4 September 2018 ranked by margin
Corowa Airport, 08-295.1 C (9.2 F)
Corowa Airport, 08-304.7 C (8.5 F)
East Sale Airport, 08-303.9 C (7.0 F)
Lady Elliot Island, 08-213.7 C (6.7 F)
Bairnsdale Airport, 08-303.5 C (6.3 F)
Amberley AMO, 08-302.7 C (4.9 F)
Marrawah, 08-282.5 C (4.5 F)
Ballarat Aerodrome, 08-292.4 C (4.3 F)
Parramatta North (Masons Drive, 08-302.3 C (4.1 F)
Laverton Raaf, 08-292.0 C (3.6 F)
Gladstone Radar, 08-221.6 C (2.9 F)
Richmond Raaf, 08-301.3 C (2.3 F)
Canberra Forestry, 08-171.1 C (2.0 F)
Sydney (Observatory Hill), 08-290.9 C (1.6 F)
Williamtown Raaf, 08-180.8 C (1.4 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 Cold outbreak in Australia, 17 August to 4 September 2018 264 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 0.01.53.04.56.0 Margin (C) Years the old record stood
264 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 Cold outbreak in Australia, 17 August to 4 September 2018
Margin (C)Years the old record stood
0.9146
0.1129
2.772
3.948
2.068
2.460
0.154
0.772
5.140
4.744
0.660
1.167
1.656
0.867
1.360
0.564
3.532
3.713
2.348
2.540
1.549
0.360
1.449
2.640
1.948
0.660
1.751
3.725
2.443
1.848
0.260
0.757
1.548
1.412
0.655
0.852
2.143
0.948
0.855
2.241
1.348
4.021
1.247
0.215
3.324
0.255
0.440
0.352
0.356
1.540
2.039
2.035
2.332
3.99
2.332
1.641
2.825
0.523
0.748
1.141
1.340
1.247
1.339
0.155
0.251
0.549
1.436
0.549
1.239
1.532
0.844
0.735
0.836
0.148
1.633
0.149
1.633
0.544
2.133
2.033
0.149
0.249
0.440
1.137
1.532
0.345
1.633
0.336
2.315
1.533
3.612
0.140
0.640
1.627
0.536
0.736
1.325
1.728
0.136
0.540
0.633
0.140
0.436
1.832
1.528
3.44
0.110
0.239
0.933
1.035
0.928
0.233
4.50
0.61
1.120
1.423
0.14
0.14
0.728
0.235
3.213
1.424
1.020
0.927
1.221
1.717
0.620
1.432
0.824
1.031
1.621
1.021
0.525
0.228
0.823
0.825
1.423
2.19
0.232
0.49
0.421
0.621
0.128
1.321
1.813
0.724
0.328
1.021
0.915
0.128
0.521
0.221
2.60
0.820
0.623
0.524
0.823
0.628
2.04
0.917
0.621
2.64
2.28
0.421
0.721
2.90
3.31
0.713
1.213
0.321
0.517
0.921
0.316
0.516
1.08
0.315
0.911
1.27
0.128
0.820
0.228
0.711
1.64
0.224
1.24
2.24
0.416
0.816
0.415
1.90
1.10
1.40
2.00
0.321
1.216
0.212
0.615
1.15
1.34
1.64

Compared With Other Events

Station records per event
Station records in Cold outbreak in Australia, 17 August to 4 September 2018 compared with similar events
Cold outbreak in United States and Mexico, 6 February to 5 March 202112,118 records
Cold outbreak in United States and Mexico, 13 October to 5 November 20209,841 records
Cold outbreak in United States and Mexico, 23 December 2017 to 8 January 20188,263 records
Cold outbreak in United States and Mexico, 3 to 23 January 20247,675 records
Cold outbreak in United States, 15 January to 10 February 20265,568 records
Cold outbreak in Australia, 17 August to 4 September 2018 (this event)264 records

Every Record Set

20 of 264
Every record set or tied during Cold outbreak in Australia, 17 August to 4 September 2018, in date order
DateStationRecordValueMarginYears stoodSignificance
2018-08-17Canberra ForestryRecord low minimum temperature-5.5 C (22.1 F)1.1 C (2.0 F)6730 of 100 (Routine)
2018-08-18Williamtown RaafRecord low minimum temperature0.4 C (32.7 F)0.8 C (1.4 F)6729 of 100 (Routine)
2018-08-21Monto TownshipRecord low minimum temperature-2.7 C (27.1 F)0.1 C (0.2 F)5431 of 100 (Routine)
2018-08-21Archerfield AirportRecord low minimum temperature1.5 C (34.7 F)0.7 C (1.3 F)7231 of 100 (Routine)
2018-08-21Lady Elliot IslandRecord low minimum temperature9.5 C (49.1 F)3.7 C (6.7 F)1327 of 100 (Routine)
2018-08-22Gladstone RadarRecord low minimum temperature8.0 C (46.4 F)1.6 C (2.9 F)5629 of 100 (Routine)
2018-08-27Sydney Airport AMORecord low maximum temperature13.8 C (56.8 F)0.5 C (0.9 F)6428 of 100 (Routine)
2018-08-28Mount Gambier Post OfficeRecord low minimum temperature-0.6 C (30.9 F)0.6 C (1.1 F)6030 of 100 (Routine)
2018-08-28MarrawahRecord low minimum temperature0.5 C (32.9 F)2.5 C (4.5 F)4027 of 100 (Routine)
2018-08-29Sydney (Observatory Hill)Record low minimum temperature5.2 C (41.4 F)0.9 C (1.6 F)14643 of 100 (Notable)
2018-08-29Laverton RaafRecord low minimum temperature-2.1 C (28.2 F)2.0 C (3.6 F)6833 of 100 (Routine)
2018-08-29Ballarat AerodromeRecord low minimum temperature-3.8 C (25.2 F)2.4 C (4.3 F)6033 of 100 (Routine)
2018-08-29Corowa AirportRecord low minimum temperature-4.9 C (23.2 F)5.1 C (9.2 F)4031 of 100 (Routine)
2018-08-30Hobart (Ellerslie Road)Record low minimum temperature1.0 C (33.8 F)0.1 C (0.2 F)12940 of 100 (Notable)
2018-08-30Amberley AMORecord low minimum temperature-1.5 C (29.3 F)2.7 C (4.9 F)7234 of 100 (Routine)
2018-08-30East Sale AirportRecord low minimum temperature-4.2 C (24.4 F)3.9 C (7.0 F)4834 of 100 (Routine)
2018-08-30Corowa AirportRecord low minimum temperature-4.7 C (23.5 F)4.7 C (8.5 F)4431 of 100 (Routine)
2018-08-30Richmond RaafRecord low minimum temperature-1.7 C (28.9 F)1.3 C (2.3 F)6029 of 100 (Routine)
2018-08-30Bairnsdale AirportRecord low minimum temperature-2.5 C (27.5 F)3.5 C (6.3 F)3228 of 100 (Routine)
2018-08-30Parramatta North (Masons DriveRecord low minimum temperature1.0 C (33.8 F)2.3 C (4.1 F)4827 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 264 records the event counts. The counts above use the full total.

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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.