Ceduna (Koonibba Reserve) Weather Records (ASN00018042)

Record envelope, standing records and threshold days for Ceduna (Koonibba Reserve) (ASN00018042), Australia, with 80 years of record.

Key Facts for Ceduna (Koonibba Reserve)

Ceduna (Koonibba Reserve) (ASN00018042) is a weather station in Australia at -31.90 latitude and 133.42 longitude, 62 m (203 ft) above sea level.
The station reports from 1910 to 1989, 80 years of record.
0 records set at Ceduna (Koonibba Reserve) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Ceduna (Koonibba Reserve) set a daily record precipitation of 10.6 mm (0.4 in) on 23 July 1989.

About the Station

Location: Australia, -31.90 latitude, 133.42 longitude.
Elevation: 62 m (203 ft).
Period of record: 1910 to 1989, 80 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 Ceduna (Koonibba Reserve). 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 Ceduna (Koonibba Reserve), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Ceduna (Koonibba Reserve) still stand.

Wettest Day of Each Month

Feb: 139.4 mm (5.5 in)

The wettest day on record for each calendar month at Ceduna (Koonibba Reserve). The most was 139.4 mm (5.5 in) on 13 February 1913.

Record daily precipitation for each month at Ceduna (Koonibba Reserve)
Month	Record daily precipitation (mm)	Date
Jan	41.2 mm (1.6 in)	30 January 1974
Feb	139.4 mm (5.5 in)	13 February 1913
Mar	83.8 mm (3.3 in)	31 March 1931
Apr	53.1 mm (2.1 in)	25 April 1956
May	45.6 mm (1.8 in)	25 May 1979
Jun	33.0 mm (1.3 in)	20 June 1916
Jul	78.7 mm (3.1 in)	18 July 1916
Aug	43.4 mm (1.7 in)	22 August 1941
Sep	32.0 mm (1.3 in)	7 September 1960
Oct	47.2 mm (1.9 in)	3 October 1974
Nov	28.2 mm (1.1 in)	21 November 1942
Dec	56.6 mm (2.2 in)	24 December 1946

Latest Records

Latest records at Ceduna (Koonibba Reserve)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 July 1989	Ceduna (Koonibba Reserve), AU	daily rain	10.6 mm (0.4 in)	2.5 mm (0.10 in)	40 years	20 of 100 (Routine)
15 July 1989	Ceduna (Koonibba Reserve), AU	daily rain	22.0 mm (0.9 in)	12.9 mm (0.5 in)	72 years	20 of 100 (Routine)
14 July 1989	Ceduna (Koonibba Reserve), AU	daily rain	22.0 mm (0.9 in)	5.2 mm (0.20 in)	46 years	20 of 100 (Routine)
9 July 1989	Ceduna (Koonibba Reserve), AU	daily rain	13.4 mm (0.5 in)	1.2 mm (0.05 in)	48 years	20 of 100 (Routine)
8 May 1989	Ceduna (Koonibba Reserve), AU	daily rain (Tie)	5.6 mm (0.22 in)	tie	66 years	6 of 100 (Routine)
12 April 1989	Ceduna (Koonibba Reserve), AU	daily rain	15.6 mm (0.6 in)	10.3 mm (0.4 in)	36 years	20 of 100 (Routine)
13 March 1989	Ceduna (Koonibba Reserve), AU	daily rain	12.0 mm (0.5 in)	5.1 mm (0.20 in)	58 years	20 of 100 (Routine)
10 March 1989	Ceduna (Koonibba Reserve), AU	daily rain	0.8 mm (0.03 in)	0.8 mm (0.03 in)	78 years	20 of 100 (Routine)
12 December 1988	Ceduna (Koonibba Reserve), AU	daily rain	19.0 mm (0.7 in)	11.4 mm (0.4 in)	27 years	20 of 100 (Routine)
6 December 1988	Ceduna (Koonibba Reserve), AU	daily rain	12.2 mm (0.5 in)	5.8 mm (0.23 in)	35 years	20 of 100 (Routine)
22 July 1988	Ceduna (Koonibba Reserve), AU	daily rain	15.0 mm (0.6 in)	2.0 mm (0.08 in)	9 years	12 of 100 (Routine)
19 May 1988	Ceduna (Koonibba Reserve), AU	daily rain	18.0 mm (0.7 in)	11.4 mm (0.4 in)	39 years	20 of 100 (Routine)
14 January 1988	Ceduna (Koonibba Reserve), AU	daily rain	19.2 mm (0.8 in)	9.3 mm (0.37 in)	18 years	20 of 100 (Routine)
13 January 1988	Ceduna (Koonibba Reserve), AU	daily rain	5.0 mm (0.20 in)	4.0 mm (0.16 in)	24 years	20 of 100 (Routine)
28 February 1987	Ceduna (Koonibba Reserve), AU	daily rain	31.5 mm (1.2 in)	14.5 mm (0.6 in)	5 years	17 of 100 (Routine)
21 January 1987	Ceduna (Koonibba Reserve), AU	daily rain	4.6 mm (0.18 in)	1.3 mm (0.05 in)	40 years	20 of 100 (Routine)
8 October 1986	Ceduna (Koonibba Reserve), AU	daily rain	25.0 mm (1.0 in)	13.1 mm (0.5 in)	49 years	46 of 100 (Notable)
14 August 1986	Ceduna (Koonibba Reserve), AU	daily rain	15.0 mm (0.6 in)	4.1 mm (0.16 in)	40 years	20 of 100 (Routine)
4 August 1986	Ceduna (Koonibba Reserve), AU	daily rain	18.4 mm (0.7 in)	6.0 mm (0.24 in)	19 years	20 of 100 (Routine)
28 July 1986	Ceduna (Koonibba Reserve), AU	daily rain	33.0 mm (1.3 in)	15.0 mm (0.6 in)	3 years	34 of 100 (Routine)

Extremes by Year

1910 to 1989

Yearly extremes at Ceduna (Koonibba Reserve): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	139.4 mm (5.5 in)	1913	22.8 mm (0.9 in)	79
Wettest five days (Rx5day)	152.6 mm (6.0 in)	1913	37.6 mm (1.5 in)	79
Longest dry spell (CDD)	104 days	1980	45 days	79

Wettest day (Rx1day)

The wettest day of the year at Ceduna (Koonibba Reserve), 1910 to 1989. The record is 139.4 mm (5.5 in) in 1913, marked on the chart; the median year is 22.8 mm (0.9 in).

Wettest day (Rx1day) at Ceduna (Koonibba Reserve) by year
Year	Wettest day (Rx1day)
1910	16.3 mm (0.6 in)
1911	18.5 mm (0.7 in)
1912	44.5 mm (1.8 in)
1913	139.4 mm (5.5 in)
1914	19.1 mm (0.8 in)
1915	13.7 mm (0.5 in)
1916	78.7 mm (3.1 in)
1917	21.1 mm (0.8 in)
1918	15.2 mm (0.6 in)
1919	21.8 mm (0.9 in)
1920	21.1 mm (0.8 in)
1921	17.3 mm (0.7 in)
1922	15.2 mm (0.6 in)
1923	28.2 mm (1.1 in)
1924	20.3 mm (0.8 in)
1925	20.6 mm (0.8 in)
1926	15.2 mm (0.6 in)
1927	17.3 mm (0.7 in)
1928	15.7 mm (0.6 in)
1929	14.0 mm (0.6 in)
1930	22.1 mm (0.9 in)
1931	83.8 mm (3.3 in)
1932	48.5 mm (1.9 in)
1933	17.5 mm (0.7 in)
1934	20.8 mm (0.8 in)
1935	20.8 mm (0.8 in)
1936	22.4 mm (0.9 in)
1937	22.1 mm (0.9 in)
1938	66.5 mm (2.6 in)
1939	47.0 mm (1.9 in)
1940	27.7 mm (1.1 in)
1941	43.4 mm (1.7 in)
1942	30.5 mm (1.2 in)
1943	45.7 mm (1.8 in)
1944	21.6 mm (0.9 in)
1945	35.1 mm (1.4 in)
1946	56.6 mm (2.2 in)
1947	35.1 mm (1.4 in)
1948	17.5 mm (0.7 in)
1949	25.1 mm (1.0 in)
1950	42.4 mm (1.7 in)
1951	32.8 mm (1.3 in)
1952	23.4 mm (0.9 in)
1953	29.2 mm (1.1 in)
1954	22.1 mm (0.9 in)
1955	72.4 mm (2.9 in)
1956	53.1 mm (2.1 in)
1957	0.5 mm (0.02 in)
1958	0.0 mm (0.00 in)
1960	32.0 mm (1.3 in)
1961	19.6 mm (0.8 in)
1962	25.1 mm (1.0 in)
1963	26.7 mm (1.1 in)
1964	31.0 mm (1.2 in)
1965	8.6 mm (0.34 in)
1966	33.0 mm (1.3 in)
1967	15.7 mm (0.6 in)
1968	35.1 mm (1.4 in)
1969	41.4 mm (1.6 in)
1970	11.4 mm (0.4 in)
1971	24.4 mm (1.0 in)
1972	18.5 mm (0.7 in)
1973	37.6 mm (1.5 in)
1974	47.2 mm (1.9 in)
1975	26.2 mm (1.0 in)
1976	59.0 mm (2.3 in)
1977	18.0 mm (0.7 in)
1978	22.8 mm (0.9 in)
1979	45.6 mm (1.8 in)
1980	26.4 mm (1.0 in)
1981	17.6 mm (0.7 in)
1982	16.0 mm (0.6 in)
1983	19.6 mm (0.8 in)
1984	18.1 mm (0.7 in)
1985	23.0 mm (0.9 in)
1986	33.0 mm (1.3 in)
1987	31.5 mm (1.2 in)
1988	19.2 mm (0.8 in)
1989	22.0 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ceduna (Koonibba Reserve), 1910 to 1989. The record is 152.6 mm (6.0 in) in 1913, marked on the chart; the median year is 37.6 mm (1.5 in).

Wettest five days (Rx5day) at Ceduna (Koonibba Reserve) by year
Year	Wettest five days (Rx5day)
1910	19.6 mm (0.8 in)
1911	23.9 mm (0.9 in)
1912	68.1 mm (2.7 in)
1913	152.6 mm (6.0 in)
1914	27.0 mm (1.1 in)
1915	37.6 mm (1.5 in)
1916	92.9 mm (3.7 in)
1917	26.4 mm (1.0 in)
1918	26.1 mm (1.0 in)
1919	29.7 mm (1.2 in)
1920	40.5 mm (1.6 in)
1921	44.5 mm (1.8 in)
1922	28.2 mm (1.1 in)
1923	45.2 mm (1.8 in)
1924	33.0 mm (1.3 in)
1925	33.6 mm (1.3 in)
1926	16.3 mm (0.6 in)
1927	30.0 mm (1.2 in)
1928	18.2 mm (0.7 in)
1929	24.2 mm (1.0 in)
1930	27.2 mm (1.1 in)
1931	115.9 mm (4.6 in)
1932	52.8 mm (2.1 in)
1933	30.2 mm (1.2 in)
1934	29.5 mm (1.2 in)
1935	31.8 mm (1.3 in)
1936	27.9 mm (1.1 in)
1937	58.4 mm (2.3 in)
1938	130.9 mm (5.2 in)
1939	55.1 mm (2.2 in)
1940	29.2 mm (1.1 in)
1941	62.5 mm (2.5 in)
1942	49.1 mm (1.9 in)
1943	52.9 mm (2.1 in)
1944	33.8 mm (1.3 in)
1945	58.3 mm (2.3 in)
1946	65.4 mm (2.6 in)
1947	39.2 mm (1.5 in)
1948	50.6 mm (2.0 in)
1949	38.8 mm (1.5 in)
1950	47.2 mm (1.9 in)
1951	45.8 mm (1.8 in)
1952	32.3 mm (1.3 in)
1953	39.9 mm (1.6 in)
1954	31.7 mm (1.2 in)
1955	78.7 mm (3.1 in)
1956	59.2 mm (2.3 in)
1957	0.5 mm (0.02 in)
1958	0.0 mm (0.00 in)
1960	39.8 mm (1.6 in)
1961	34.8 mm (1.4 in)
1962	33.6 mm (1.3 in)
1963	51.3 mm (2.0 in)
1964	34.8 mm (1.4 in)
1965	21.1 mm (0.8 in)
1966	62.5 mm (2.5 in)
1967	27.9 mm (1.1 in)
1968	58.7 mm (2.3 in)
1969	42.9 mm (1.7 in)
1970	17.6 mm (0.7 in)
1971	50.0 mm (2.0 in)
1972	31.8 mm (1.3 in)
1973	60.2 mm (2.4 in)
1974	74.4 mm (2.9 in)
1975	40.6 mm (1.6 in)
1976	59.0 mm (2.3 in)
1977	18.2 mm (0.7 in)
1978	41.8 mm (1.6 in)
1979	35.4 mm (1.4 in)
1980	30.0 mm (1.2 in)
1981	30.6 mm (1.2 in)
1982	18.8 mm (0.7 in)
1983	42.1 mm (1.7 in)
1984	18.4 mm (0.7 in)
1985	39.1 mm (1.5 in)
1986	43.6 mm (1.7 in)
1987	31.5 mm (1.2 in)
1988	27.8 mm (1.1 in)
1989	53.2 mm (2.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ceduna (Koonibba Reserve), 1910 to 1989. The record is 104 days in 1980, marked on the chart; the median year is 45 days.

Longest dry spell (CDD) at Ceduna (Koonibba Reserve) by year
Year	Longest dry spell (CDD)
1910	42 days
1911	76 days
1912	37 days
1913	43 days
1914	70 days
1915	70 days
1916	90 days
1917	33 days
1918	46 days
1919	61 days
1920	50 days
1921	53 days
1922	41 days
1923	43 days
1924	43 days
1925	33 days
1926	45 days
1927	33 days
1928	67 days
1929	30 days
1930	58 days
1931	39 days
1932	49 days
1933	42 days
1934	37 days
1935	47 days
1936	39 days
1937	51 days
1938	34 days
1939	36 days
1940	29 days
1941	29 days
1942	31 days
1943	41 days
1944	56 days
1945	68 days
1946	34 days
1947	29 days
1948	33 days
1949	50 days
1950	60 days
1951	62 days
1952	34 days
1953	39 days
1954	45 days
1955	35 days
1956	58 days
1957	31 days
1958	28 days
1960	41 days
1961	41 days
1962	43 days
1963	96 days
1964	32 days
1965	70 days
1966	41 days
1967	71 days
1968	32 days
1969	43 days
1970	62 days
1971	32 days
1972	56 days
1973	40 days
1974	64 days
1975	49 days
1976	76 days
1977	43 days
1978	67 days
1979	74 days
1980	104 days
1981	49 days
1982	59 days
1983	59 days
1984	53 days
1985	69 days
1986	56 days
1987	45 days
1988	80 days
1989	71 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.

Rainfall Return Levels

68 years, 1911 to 1989

A day with at least 25.3 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 123.5 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Ceduna (Koonibba Reserve): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	25.3 mm (1.0 in)
5 years	39.8 mm (1.6 in)
10 years	52.9 mm (2.1 in)
25 years	74.9 mm (2.9 in)
50 years	96.5 mm (3.8 in)
100 years	123.5 mm (4.9 in)	Longer than the 68 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 68 years of values from 1911 to 1989.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 139.4 mm (5.5 in) in 1913; 83.8 mm (3.3 in) in 1931; 78.7 mm (3.1 in) in 1916.

Download the Data

Data for Ceduna (Koonibba Reserve) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ceduna (Koonibba Reserve) 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a