Cockatoo Island Weather Records (ASN00003025)

Record envelope, standing records and threshold days for Cockatoo Island (ASN00003025), Australia, with 67 years of record.

Key Facts for Cockatoo Island

Cockatoo Island (ASN00003025) is a weather station in Australia at -16.09 latitude and 123.59 longitude, 13 m (43 ft) above sea level.
The station reports from 1948 to 2014, 67 years of record.
1,464 records set at Cockatoo Island still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Cockatoo Island set a daily record precipitation of 50.4 mm (2.0 in) on 13 July 2014.

About the Station

Location: Australia, -16.09 latitude, 123.59 longitude.
Elevation: 13 m (43 ft).
Period of record: 1948 to 2014, 67 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Cockatoo Island. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Cockatoo Island, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	39.0 C (102.2 F)	16.8 C (62.2 F)	n/a	n/a
Feb	37.8 C (100.0 F)	19.6 C (67.3 F)	n/a	n/a
Mar	37.0 C (98.6 F)	21.5 C (70.7 F)	n/a	n/a
Apr	38.5 C (101.3 F)	20.7 C (69.3 F)	n/a	n/a
May	36.8 C (98.2 F)	18.3 C (64.9 F)	n/a	n/a
Jun	34.3 C (93.7 F)	17.2 C (63.0 F)	n/a	n/a
Jul	33.8 C (92.8 F)	17.1 C (62.8 F)	n/a	n/a
Aug	34.9 C (94.8 F)	17.9 C (64.2 F)	n/a	n/a
Sep	37.2 C (99.0 F)	18.2 C (64.8 F)	n/a	n/a
Oct	39.6 C (103.3 F)	22.3 C (72.1 F)	n/a	n/a
Nov	37.6 C (99.7 F)	23.4 C (74.1 F)	n/a	n/a
Dec	38.5 C (101.3 F)	22.7 C (72.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cockatoo Island still stand. 1973 holds the most, with 132.

Standing records at Cockatoo Island by the year they were set
Year set	Standing records
1965	78
1966	70
1967	97
1968	95
1969	83
1970	120
1971	103
1972	52
1973	132
1974	66
1975	113
1976	72
1977	54
1978	76
1979	62
1980	82
1981	73
1982	36

Wettest Day of Each Month

May: 284.5 mm (11.2 in)

The wettest day on record for each calendar month at Cockatoo Island. The most was 284.5 mm (11.2 in) on 30 May 1964.

Record daily precipitation for each month at Cockatoo Island
Month	Record daily precipitation (mm)	Date
Jan	193.6 mm (7.6 in)	17 January 1982
Feb	180.6 mm (7.1 in)	19 February 1948
Mar	265.7 mm (10.5 in)	4 March 1972
Apr	108.2 mm (4.3 in)	26 April 1960
May	284.5 mm (11.2 in)	30 May 1964
Jun	56.6 mm (2.2 in)	10 June 1978
Jul	61.4 mm (2.4 in)	7 July 1978
Aug	22.1 mm (0.9 in)	25 August 1973
Sep	22.8 mm (0.9 in)	8 September 1974
Oct	27.7 mm (1.1 in)	29 October 1971
Nov	37.8 mm (1.5 in)	22 November 1973
Dec	171.5 mm (6.8 in)	23 December 1960

Period of Record Coverage

1965 to 1982

18 years of record at Cockatoo Island, 1965 to 1982. 7 years have data for under 90 percent of days and are left out of rankings: 1976, 1977, 1978, 1979, 1980, 1981, 1982.

Days with data per year at Cockatoo Island
Year	Days with data	Share of year	Complete
1965	364	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	364	99%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	363	99%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	349	96%	Yes
1976	275	75%	No
1977	257	70%	No
1978	243	67%	No
1979	249	68%	No
1980	254	69%	No
1981	258	71%	No
1982	121	33%	No

Latest Records

Latest records at Cockatoo Island
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 July 2014	Cockatoo Island, AU	daily rain	50.4 mm (2.0 in)	33.9 mm (1.3 in)	56 years	55 of 100 (Notable)
28 April 1984	Cockatoo Island, AU	daily rain	0.8 mm (0.03 in)	0.8 mm (0.03 in)	36 years	13 of 100 (Routine)
20 March 1984	Cockatoo Island, AU	daily rain	28.8 mm (1.1 in)	17.6 mm (0.7 in)	14 years	12 of 100 (Routine)
18 March 1984	Cockatoo Island, AU	daily rain	64.6 mm (2.5 in)	41.8 mm (1.6 in)	10 years	18 of 100 (Routine)
27 February 1984	Cockatoo Island, AU	daily rain	100.8 mm (4.0 in)	56.0 mm (2.2 in)	9 years	25 of 100 (Routine)
25 February 1984	Cockatoo Island, AU	daily rain	41.6 mm (1.6 in)	7.3 mm (0.29 in)	10 years	8 of 100 (Routine)
22 January 1984	Cockatoo Island, AU	daily rain	143.5 mm (5.6 in)	94.0 mm (3.7 in)	20 years	38 of 100 (Notable)
21 January 1984	Cockatoo Island, AU	daily rain	95.6 mm (3.8 in)	47.8 mm (1.9 in)	14 years	21 of 100 (Routine)
6 January 1984	Cockatoo Island, AU	daily rain	20.8 mm (0.8 in)	9.1 mm (0.36 in)	26 years	13 of 100 (Routine)
13 April 1983	Cockatoo Island, AU	daily rain	5.1 mm (0.20 in)	3.1 mm (0.12 in)	22 years	10 of 100 (Routine)
30 March 1983	Cockatoo Island, AU	daily rain	47.0 mm (1.9 in)	19.0 mm (0.7 in)	4 years	9 of 100 (Routine)
27 March 1983	Cockatoo Island, AU	daily rain	11.4 mm (0.4 in)	5.0 mm (0.20 in)	18 years	9 of 100 (Routine)
20 February 1983	Cockatoo Island, AU	daily rain	88.6 mm (3.5 in)	52.3 mm (2.1 in)	20 years	27 of 100 (Routine)
2 January 1983	Cockatoo Island, AU	daily rain	40.2 mm (1.6 in)	12.3 mm (0.5 in)	21 years	12 of 100 (Routine)
16 December 1982	Cockatoo Island, AU	daily rain	14.2 mm (0.6 in)	12.7 mm (0.5 in)	12 years	10 of 100 (Routine)
26 November 1982	Cockatoo Island, AU	daily rain	28.0 mm (1.1 in)	28.0 mm (1.1 in)	33 years	53 of 100 (Notable)
20 January 1982	Cockatoo Island, AU	daily rain	78.8 mm (3.1 in)	21.6 mm (0.9 in)	0 years	9 of 100 (Routine)
17 January 1982	Cockatoo Island, AU	monthly rain	193.6 mm (7.6 in)	17.2 mm (0.7 in)	8 years	20 of 100 (Routine)

Climate Trend

10 complete years, 1965 to 1974

One stripe for each of 10 complete years at Cockatoo Island, 1965 to 1974. Blue stripes are years cooler than the station's own mean of 28.1 C (82.5 F); red stripes are warmer. The coolest year was 1967, at 27.6 C (81.6 F), and the warmest was 1973, at 28.8 C (83.8 F). The strongest colour marks a difference of 0.8 C (1.4 F).

Annual mean temperature at Cockatoo Island as warming stripes, 1965 to 1974
Year	Annual mean temperature	Difference from the station mean
1965	27.8 C	-0.29 C
1966	27.9 C	-0.14 C
1967	27.6 C	-0.52 C
1968	27.8 C	-0.26 C
1969	27.8 C	-0.27 C
1970	28.6 C	+0.50 C
1971	28.3 C	+0.22 C
1972	28.3 C	+0.21 C
1973	28.8 C	+0.72 C
1974	27.9 C	-0.20 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1948 to 2014

Yearly extremes at Cockatoo Island: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.6 C (103.3 F)	1979	37.2 C (99.0 F)	18
Coldest night (TNn)	16.8 C (62.2 F)	1967	18.3 C (64.9 F)	18
Wettest day (Rx1day)	284.5 mm (11.2 in)	1964	112.0 mm (4.4 in)	37
Wettest five days (Rx5day)	512.4 mm (20.2 in)	1961	218.2 mm (8.6 in)	37
Longest dry spell (CDD)	254 days	1976	140 days	37

Hottest day (TXx)

The hottest day of the year at Cockatoo Island, 1948 to 2014. The record is 39.6 C (103.3 F) in 1979, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Cockatoo Island by year
Year	Hottest day (TXx)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	36.1 C (97.0 F)
1966	36.3 C (97.3 F)
1967	36.2 C (97.2 F)
1968	38.0 C (100.4 F)
1969	38.1 C (100.6 F)
1970	36.8 C (98.2 F)
1971	37.2 C (99.0 F)
1972	37.7 C (99.9 F)
1973	37.2 C (99.0 F)
1974	36.5 C (97.7 F)
1975	37.8 C (100.0 F)
1976	39.0 C (102.2 F)
1977	36.2 C (97.2 F)
1978	36.5 C (97.7 F)
1979	39.6 C (103.3 F)
1980	38.5 C (101.3 F)
1981	38.5 C (101.3 F)
1982	37.2 C (99.0 F)
1983	n/a
1984	n/a
2014	n/a

Coldest night (TNn)

The coldest night of the year at Cockatoo Island, 1948 to 2014. The record is 16.8 C (62.2 F) in 1967, marked on the chart; the median year is 18.3 C (64.9 F).

Coldest night (TNn) at Cockatoo Island by year
Year	Coldest night (TNn)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	17.6 C (63.7 F)
1966	18.2 C (64.8 F)
1967	16.8 C (62.2 F)
1968	17.1 C (62.8 F)
1969	17.6 C (63.7 F)
1970	19.0 C (66.2 F)
1971	17.3 C (63.1 F)
1972	19.7 C (67.5 F)
1973	17.2 C (63.0 F)
1974	18.4 C (65.1 F)
1975	20.6 C (69.1 F)
1976	19.0 C (66.2 F)
1977	18.2 C (64.8 F)
1978	17.6 C (63.7 F)
1979	18.8 C (65.8 F)
1980	20.4 C (68.7 F)
1981	19.0 C (66.2 F)
1982	19.5 C (67.1 F)
1983	n/a
1984	n/a
2014	n/a

Wettest day (Rx1day)

The wettest day of the year at Cockatoo Island, 1948 to 2014. The record is 284.5 mm (11.2 in) in 1964, marked on the chart; the median year is 112.0 mm (4.4 in).

Wettest day (Rx1day) at Cockatoo Island by year
Year	Wettest day (Rx1day)
1948	180.6 mm (7.1 in)
1949	134.6 mm (5.3 in)
1950	67.8 mm (2.7 in)
1951	55.6 mm (2.2 in)
1952	67.1 mm (2.6 in)
1953	61.0 mm (2.4 in)
1954	56.6 mm (2.2 in)
1955	112.0 mm (4.4 in)
1956	99.6 mm (3.9 in)
1957	44.2 mm (1.7 in)
1958	139.2 mm (5.5 in)
1960	171.5 mm (6.8 in)
1961	214.9 mm (8.5 in)
1962	169.7 mm (6.7 in)
1963	154.7 mm (6.1 in)
1964	284.5 mm (11.2 in)
1965	0.0 mm (0.00 in)
1966	0.0 mm (0.00 in)
1967	168.1 mm (6.6 in)
1968	0.0 mm (0.00 in)
1969	136.9 mm (5.4 in)
1970	84.1 mm (3.3 in)
1971	106.2 mm (4.2 in)
1972	265.7 mm (10.5 in)
1973	206.8 mm (8.1 in)
1974	176.4 mm (6.9 in)
1975	169.0 mm (6.7 in)
1976	82.2 mm (3.2 in)
1977	122.2 mm (4.8 in)
1978	192.4 mm (7.6 in)
1979	49.2 mm (1.9 in)
1980	100.4 mm (4.0 in)
1981	82.0 mm (3.2 in)
1982	193.6 mm (7.6 in)
1983	88.6 mm (3.5 in)
1984	143.5 mm (5.6 in)
2014	50.4 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cockatoo Island, 1948 to 2014. The record is 512.4 mm (20.2 in) in 1961, marked on the chart; the median year is 218.2 mm (8.6 in).

Wettest five days (Rx5day) at Cockatoo Island by year
Year	Wettest five days (Rx5day)
1948	213.3 mm (8.4 in)
1949	254.6 mm (10.0 in)
1950	125.0 mm (4.9 in)
1951	100.0 mm (3.9 in)
1952	71.2 mm (2.8 in)
1953	91.2 mm (3.6 in)
1954	147.5 mm (5.8 in)
1955	176.4 mm (6.9 in)
1956	221.5 mm (8.7 in)
1957	75.7 mm (3.0 in)
1958	240.3 mm (9.5 in)
1960	336.1 mm (13.2 in)
1961	512.4 mm (20.2 in)
1962	407.7 mm (16.1 in)
1963	372.1 mm (14.6 in)
1964	395.9 mm (15.6 in)
1965	0.0 mm (0.00 in)
1966	0.0 mm (0.00 in)
1967	318.8 mm (12.6 in)
1968	0.0 mm (0.00 in)
1969	312.2 mm (12.3 in)
1970	177.9 mm (7.0 in)
1971	218.2 mm (8.6 in)
1972	449.4 mm (17.7 in)
1973	376.2 mm (14.8 in)
1974	477.6 mm (18.8 in)
1975	287.2 mm (11.3 in)
1976	212.6 mm (8.4 in)
1977	324.6 mm (12.8 in)
1978	244.8 mm (9.6 in)
1979	91.0 mm (3.6 in)
1980	201.2 mm (7.9 in)
1981	127.5 mm (5.0 in)
1982	400.1 mm (15.8 in)
1983	118.2 mm (4.7 in)
1984	300.7 mm (11.8 in)
2014	50.4 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cockatoo Island, 1948 to 2014. The record is 254 days in 1976, marked on the chart; the median year is 140 days.

Longest dry spell (CDD) at Cockatoo Island by year
Year	Longest dry spell (CDD)
1948	203 days
1949	187 days
1950	19 days
1951	159 days
1952	182 days
1953	214 days
1954	160 days
1955	111 days
1956	108 days
1957	102 days
1958	140 days
1960	160 days
1961	231 days
1962	110 days
1963	187 days
1964	182 days
1965	123 days
1966	61 days
1967	224 days
1968	92 days
1969	92 days
1970	119 days
1971	155 days
1972	130 days
1973	49 days
1974	125 days
1975	58 days
1976	254 days
1977	173 days
1978	102 days
1979	156 days
1980	176 days
1981	233 days
1982	163 days
1983	17 days
1984	31 days
2014	17 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

Data for Cockatoo Island standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cockatoo Island threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).