Extreme rain in Australia, 27 to 30 October 2021

Name: Extreme rain in Australia, 27 to 30 October 2021
Start: 2021-10-27
End: 2021-10-30
Location: Australia

Extreme rain in Australia, 27 to 30 October 2021: 267 records at 243 stations, peak on 29 October 2021. Closed.

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

Key Facts

Extreme rain in Australia, 27 to 30 October 2021 set or tied 267 station records at 243 stations.
It ran from 27 October 2021 to 30 October 2021 (4 days) and its peak day was 29 October 2021.
Status: closed.
Penola Post Office set a daily record precipitation of 36.2 mm (1.4 in) on 29 October 2021.
The busiest day was 29 October 2021 with 194 records.
The oldest broken record in the ranked list had stood for 129 years.

Footprint

27 to 30 October 2021

The area covered by Extreme rain in Australia, 27 to 30 October 2021 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Extreme rain in Australia, 27 to 30 October 2021: stations that set records in the event
Station	Type	Value	Date
Penola Post Office	Record daily precipitation	36.2 mm (1.4 in)	2021-10-29
Portland	Record daily precipitation	57.4 mm (2.3 in)	2021-10-29
Tintinara	Record daily precipitation	36.0 mm (1.4 in)	2021-10-29
Dergholm (Hillgrove)	Record daily precipitation	45.0 mm (1.8 in)	2021-10-29
Ouse (Millbrook)	Record daily precipitation	42.4 mm (1.7 in)	2021-10-29
Bronte Heights	Record daily precipitation	51.0 mm (2.0 in)	2021-10-29
Osterley	Record daily precipitation	43.4 mm (1.7 in)	2021-10-29
Apsley (Parki)	Record daily precipitation	34.4 mm (1.4 in)	2021-10-29
Bothwell (Franklin Street)	Record daily precipitation	39.0 mm (1.5 in)	2021-10-29
Hobart (Ellerslie Road)	Record daily precipitation	41.8 mm (1.6 in)	2021-10-29
Miena Dam	Record daily precipitation	40.8 mm (1.6 in)	2021-10-29
Casterton (Roseneath)	Record daily precipitation	44.0 mm (1.7 in)	2021-10-29
Penshurst (the Gums)	Record daily precipitation	42.0 mm (1.7 in)	2021-10-29
City of Melbourne Bay	Record daily precipitation	47.0 mm (1.9 in)	2021-10-29
Jericho (Bowsden)	Record daily precipitation	37.8 mm (1.5 in)	2021-10-29
Hawkesdale (Post Office)	Record daily precipitation	51.6 mm (2.0 in)	2021-10-28
Mount Gambier Aero	Record daily precipitation	34.8 mm (1.4 in)	2021-10-29
Lunawanna	Record daily precipitation	32.8 mm (1.3 in)	2021-10-29
Woodbury (Warringa)	Record daily precipitation	36.2 mm (1.4 in)	2021-10-29
Bushy Park (Bushy Park Estates	Record daily precipitation	28.0 mm (1.1 in)	2021-10-29

Records per Day

Peak day 194

Records set or tied each day from 27 October 2021 to 30 October 2021. The most in one day was 194 on 29 October 2021.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in Australia, 27 to 30 October 2021 ranked by margin
Dergholm (Hillgrove), 10-29	32.3 mm (1.3 in)
City of Melbourne Bay, 10-29	31.0 mm (1.2 in)
Portland, 10-29	30.2 mm (1.2 in)
Bronte Heights, 10-29	29.4 mm (1.2 in)
Ouse (Millbrook), 10-29	28.7 mm (1.1 in)
Osterley, 10-29	27.7 mm (1.1 in)
Jericho (Bowsden), 10-29	26.4 mm (1.0 in)
Penshurst (the Gums), 10-29	26.3 mm (1.0 in)
Hobart (Ellerslie Road), 10-29	25.5 mm (1.0 in)
Hawkesdale (Post Office), 10-28	24.4 mm (1.0 in)
Penola Post Office, 10-29	24.0 mm (0.9 in)
Tintinara, 10-29	22.3 mm (0.9 in)
Apsley (Parki), 10-29	19.9 mm (0.8 in)
Woodbury (Warringa), 10-29	19.7 mm (0.8 in)
Mount Gambier Aero, 10-29	18.3 mm (0.7 in)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

267 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 Extreme rain in Australia, 27 to 30 October 2021
Margin (mm)	Years the old record stood
24	115
30	115
22	99
32	99
29	91
29	92
28	86
20	92
18	92
26	68
18	92
18	119
26	68
31	72
26	68
18	79
24	58
16	104
20	68
12	91
13	100
11	111
23	68
10	99
27	28
28	54
26	44
21	46
9	119
15	36
32	35
18	68
13	79
21	10
14	104
9	99
15	83
19	48
12	91
18	83
12	84
21	28
18	58
25	32
13	92
8	92
17	68
27	28
17	52
20	28
16	54
22	54
31	20
5	111
11	76
25	14
5	129
40	18
22	10
12	36
20	20
22	52
10	48
3	129
24	16
11	74
29	10
14	66
19	14
18	20
3	120
3	111
4	91
6	91
10	68
18	20
11	68
9	68
2	99
10	66
10	66
11	55
15	51
12	48
15	40
8	68
7	83
14	44
15	20
1	107
2	92
12	68
6	83
3	92
14	32
7	68
4	83
20	43
5	66
7	66
0	98
6	66
5	79
3	84
7	72
9	52
21	10
11	52
22	27
9	44
1	91
2	48
16	16
17	16
11	51
17	22
9	28
16	10
1	84
12	54
1	79
14	28
3	79
6	52
9	56
3	66
13	28
4	66
13	28
1	79
10	28
8	28
14	11
2	68
8	46
9	51
22	28
13	51
5	52
9	52
1	79
4	52
4	52
7	52
9	52
9	52
7	52
1	74
7	28
6	60
13	16
8	8
4	66
9	28
0	76
4	60
12	18
18	4
2	62
10	36
2	58
4	58
15	10
10	32
10	48
9	11
9	11
9	35
2	68
1	29
4	52
9	32
13	10
10	28
12	16
2	52
0	58
6	12
8	28
4	52
3	52
7	28
9	28
2	58
9	28
10	10
9	10
4	52
4	52
12	18
0	52
4	48
15	14
13	10
3	28
1	23
1	40
9	10
11	18
7	28

Compared With Other Events

Station records per event

Station records in Extreme rain in Australia, 27 to 30 October 2021 compared with similar events
Extreme rain in United States and Mexico, 23 February to 15 March 2019	2,223 records
Extreme rain in United States, 3 to 19 January 2024	2,133 records
Extreme rain in Australia, 7 to 26 March 2021	2,099 records
Extreme rain in United States and Mexico, 29 September to 19 October 2018	1,970 records
Extreme rain in United States, 19 December 2022 to 13 January 2023	1,941 records
Extreme rain in Australia, 27 to 30 October 2021 (this event)	267 records

Every Record Set

20 of 267

Every record set or tied during Extreme rain in Australia, 27 to 30 October 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-10-28	Hawkesdale (Post Office)	Record daily precipitation	51.6 mm (2.0 in)	24.4 mm (1.0 in)	58	67 of 100 (Major)
2021-10-29	Penola Post Office	Record daily precipitation	36.2 mm (1.4 in)	24.0 mm (0.9 in)	115	80 of 100 (Exceptional)
2021-10-29	Portland	Record daily precipitation	57.4 mm (2.3 in)	30.2 mm (1.2 in)	115	80 of 100 (Exceptional)
2021-10-29	Tintinara	Record daily precipitation	36.0 mm (1.4 in)	22.3 mm (0.9 in)	99	79 of 100 (Major)
2021-10-29	Dergholm (Hillgrove)	Record daily precipitation	45.0 mm (1.8 in)	32.3 mm (1.3 in)	99	79 of 100 (Major)
2021-10-29	Ouse (Millbrook)	Record daily precipitation	42.4 mm (1.7 in)	28.7 mm (1.1 in)	91	77 of 100 (Major)
2021-10-29	Bronte Heights	Record daily precipitation	51.0 mm (2.0 in)	29.4 mm (1.2 in)	92	77 of 100 (Major)
2021-10-29	Osterley	Record daily precipitation	43.4 mm (1.7 in)	27.7 mm (1.1 in)	86	75 of 100 (Major)
2021-10-29	Apsley (Parki)	Record daily precipitation	34.4 mm (1.4 in)	19.9 mm (0.8 in)	92	72 of 100 (Major)
2021-10-29	Bothwell (Franklin Street)	Record daily precipitation	39.0 mm (1.5 in)	17.9 mm (0.7 in)	92	72 of 100 (Major)
2021-10-29	Hobart (Ellerslie Road)	Record daily precipitation	41.8 mm (1.6 in)	25.5 mm (1.0 in)	68	70 of 100 (Major)
2021-10-29	Miena Dam	Record daily precipitation	40.8 mm (1.6 in)	17.7 mm (0.7 in)	92	70 of 100 (Major)
2021-10-29	Casterton (Roseneath)	Record daily precipitation	44.0 mm (1.7 in)	17.6 mm (0.7 in)	119	69 of 100 (Major)
2021-10-29	Penshurst (the Gums)	Record daily precipitation	42.0 mm (1.7 in)	26.3 mm (1.0 in)	68	69 of 100 (Major)
2021-10-29	City of Melbourne Bay	Record daily precipitation	47.0 mm (1.9 in)	31.0 mm (1.2 in)	72	69 of 100 (Major)
2021-10-29	Jericho (Bowsden)	Record daily precipitation	37.8 mm (1.5 in)	26.4 mm (1.0 in)	68	68 of 100 (Major)
2021-10-29	Mount Gambier Aero	Record daily precipitation	34.8 mm (1.4 in)	18.3 mm (0.7 in)	79	67 of 100 (Major)
2021-10-29	Lunawanna	Record daily precipitation	32.8 mm (1.3 in)	16.3 mm (0.6 in)	104	65 of 100 (Major)
2021-10-29	Woodbury (Warringa)	Record daily precipitation	36.2 mm (1.4 in)	19.7 mm (0.8 in)	68	64 of 100 (Major)
2021-10-29	Bushy Park (Bushy Park Estates	Record daily precipitation	28.0 mm (1.1 in)	12.3 mm (0.5 in)	91	63 of 100 (Major)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 267 records the event counts. The counts above use the full total.

Related Headlines

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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.

Margin (mm)	Years the old record stood
24	115
30	115
22	99
32	99
29	91
29	92
28	86
20	92
18	92
26	68
18	92
18	119
26	68
31	72
26	68
18	79
24	58
16	104
20	68
12	91
13	100
11	111
23	68
10	99
27	28
28	54
26	44
21	46
9	119
15	36
32	35
18	68
13	79
21	10
14	104
9	99
15	83
19	48
12	91
18	83
12	84
21	28
18	58
25	32
13	92
8	92
17	68
27	28
17	52
20	28
16	54
22	54
31	20
5	111
11	76
25	14
5	129
40	18
22	10
12	36
20	20
22	52
10	48
3	129
24	16
11	74
29	10
14	66
19	14
18	20
3	120
3	111
4	91
6	91
10	68
18	20
11	68
9	68
2	99
10	66
10	66
11	55
15	51
12	48
15	40
8	68
7	83
14	44
15	20
1	107
2	92
12	68
6	83
3	92
14	32
7	68
4	83
20	43
5	66
7	66
0	98
6	66
5	79
3	84
7	72
9	52
21	10
11	52
22	27
9	44
1	91
2	48
16	16
17	16
11	51
17	22
9	28
16	10
1	84
12	54
1	79
14	28
3	79
6	52
9	56
3	66
13	28
4	66
13	28
1	79
10	28
8	28
14	11
2	68
8	46
9	51
22	28
13	51
5	52
9	52
1	79
4	52
4	52
7	52
9	52
9	52
7	52
1	74
7	28
6	60
13	16
8	8
4	66
9	28
0	76
4	60
12	18
18	4
2	62
10	36
2	58
4	58
15	10
10	32
10	48
9	11
9	11
9	35
2	68
1	29
4	52
9	32
13	10
10	28
12	16
2	52
0	58
6	12
8	28
4	52
3	52
7	28
9	28
2	58
9	28
10	10
9	10
4	52
4	52
12	18
0	52
4	48
15	14
13	10
3	28
1	23
1	40
9	10
11	18
7	28

Margin (mm)	Years the old record stood
24	115
30	115
22	99
32	99
29	91
29	92
28	86
20	92
18	92
26	68
18	92
18	119
26	68
31	72
26	68
18	79
24	58
16	104
20	68
12	91
13	100
11	111
23	68
10	99
27	28
28	54
26	44
21	46
9	119
15	36
32	35
18	68
13	79
21	10
14	104
9	99
15	83
19	48
12	91
18	83
12	84
21	28
18	58
25	32
13	92
8	92
17	68
27	28
17	52
20	28
16	54
22	54
31	20
5	111
11	76
25	14
5	129
40	18
22	10
12	36
20	20
22	52
10	48
3	129
24	16
11	74
29	10
14	66
19	14
18	20
3	120
3	111
4	91
6	91
10	68
18	20
11	68
9	68
2	99
10	66
10	66
11	55
15	51
12	48
15	40
8	68
7	83
14	44
15	20
1	107
2	92
12	68
6	83
3	92
14	32
7	68
4	83
20	43
5	66
7	66
0	98
6	66
5	79
3	84
7	72
9	52
21	10
11	52
22	27
9	44
1	91
2	48
16	16
17	16
11	51
17	22
9	28
16	10
1	84
12	54
1	79
14	28
3	79
6	52
9	56
3	66
13	28
4	66
13	28
1	79
10	28
8	28
14	11
2	68
8	46
9	51
22	28
13	51
5	52
9	52
1	79
4	52
4	52
7	52
9	52
9	52
7	52
1	74
7	28
6	60
13	16
8	8
4	66
9	28
0	76
4	60
12	18
18	4
2	62
10	36
2	58
4	58
15	10
10	32
10	48
9	11
9	11
9	35
2	68
1	29
4	52
9	32
13	10
10	28
12	16
2	52
0	58
6	12
8	28
4	52
3	52
7	28
9	28
2	58
9	28
10	10
9	10
4	52
4	52
12	18
0	52
4	48
15	14
13	10
3	28
1	23
1	40
9	10
11	18
7	28

Margin (mm)	Years the old record stood
24	115
30	115
22	99
32	99
29	91
29	92
28	86
20	92
18	92
26	68
18	92
18	119
26	68
31	72
26	68
18	79
24	58
16	104
20	68
12	91
13	100
11	111
23	68
10	99
27	28
28	54
26	44
21	46
9	119
15	36
32	35
18	68
13	79
21	10
14	104
9	99
15	83
19	48
12	91
18	83
12	84
21	28
18	58
25	32
13	92
8	92
17	68
27	28
17	52
20	28
16	54
22	54
31	20
5	111
11	76
25	14
5	129
40	18
22	10
12	36
20	20
22	52
10	48
3	129
24	16
11	74
29	10
14	66
19	14
18	20
3	120
3	111
4	91
6	91
10	68
18	20
11	68
9	68
2	99
10	66
10	66
11	55
15	51
12	48
15	40
8	68
7	83
14	44
15	20
1	107
2	92
12	68
6	83
3	92
14	32
7	68
4	83
20	43
5	66
7	66
0	98
6	66
5	79
3	84
7	72
9	52
21	10
11	52
22	27
9	44
1	91
2	48
16	16
17	16
11	51
17	22
9	28
16	10
1	84
12	54
1	79
14	28
3	79
6	52
9	56
3	66
13	28
4	66
13	28
1	79
10	28
8	28
14	11
2	68
8	46
9	51
22	28
13	51
5	52
9	52
1	79
4	52
4	52
7	52
9	52
9	52
7	52
1	74
7	28
6	60
13	16
8	8
4	66
9	28
0	76
4	60
12	18
18	4
2	62
10	36
2	58
4	58
15	10
10	32
10	48
9	11
9	11
9	35
2	68
1	29
4	52
9	32
13	10
10	28
12	16
2	52
0	58
6	12
8	28
4	52
3	52
7	28
9	28
2	58
9	28
10	10
9	10
4	52
4	52
12	18
0	52
4	48
15	14
13	10
3	28
1	23
1	40
9	10
11	18
7	28