Kwinana Bp Refinery Weather Records (ASN00009064)

Record envelope, standing records and threshold days for Kwinana Bp Refinery (ASN00009064), Australia, with 58 years of record.

Key Facts for Kwinana Bp Refinery

Kwinana Bp Refinery (ASN00009064) is a weather station in Australia at -32.23 latitude and 115.76 longitude, 4 m (13 ft) above sea level.
The station reports from 1955 to 2012, 58 years of record.
1,464 records set at Kwinana Bp Refinery still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Kwinana Bp Refinery set a daily record high maximum temperature of 31.0 C (87.8 F) on 27 October 2012.

About the Station

Location: Australia, -32.23 latitude, 115.76 longitude.
Elevation: 4 m (13 ft).
Period of record: 1955 to 2012, 58 years.
Eligible elements: tmax, tmin, 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 Kwinana Bp Refinery. 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 Kwinana Bp Refinery, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	42.6 C (108.7 F)	8.0 C (46.4 F)	n/a	n/a
Feb	43.2 C (109.8 F)	10.5 C (50.9 F)	n/a	n/a
Mar	41.4 C (106.5 F)	7.4 C (45.3 F)	n/a	n/a
Apr	36.5 C (97.7 F)	5.6 C (42.1 F)	n/a	n/a
May	30.8 C (87.4 F)	3.9 C (39.0 F)	n/a	n/a
Jun	26.1 C (79.0 F)	3.4 C (38.1 F)	n/a	n/a
Jul	25.9 C (78.6 F)	2.5 C (36.5 F)	n/a	n/a
Aug	27.2 C (81.0 F)	0.8 C (33.4 F)	n/a	n/a
Sep	31.0 C (87.8 F)	3.6 C (38.5 F)	n/a	n/a
Oct	38.0 C (100.4 F)	4.5 C (40.1 F)	n/a	n/a
Nov	40.0 C (104.0 F)	5.0 C (41.0 F)	n/a	n/a
Dec	41.7 C (107.1 F)	6.7 C (44.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Kwinana Bp Refinery still stand. 1968 holds the most, with 61.

Standing records at Kwinana Bp Refinery by the year they were set
Year set	Standing records
1955	4
1956	36
1957	30
1958	28
1959	39
1960	41
1961	28
1962	22
1963	25
1964	56
1965	17
1966	20
1967	21
1968	61
1969	26
1970	29
1971	32
1972	42
1973	39
1974	20
1975	26
1976	23
1977	26
1978	24
1979	9
1980	21
1981	21
1982	31
1983	24
1984	27
1985	42
1986	19
1987	25
1988	25
1989	22
1990	35
1991	29
1992	20
1993	14
1994	23
1995	15
1996	16
1997	19
1998	25
1999	25
2000	19
2001	20
2002	21
2003	24
2004	26
2005	41
2006	23
2007	39
2010	12
2011	15
2012	22

All-Time Record Progression

2 new records

2 all-time records were set at Kwinana Bp Refinery between 29 July 1987 and 25 August 1997. Each dot is a new record.

When Kwinana Bp Refinery set new all-time records
Date	Kind	Detail
1987-07-29	Record daily precipitation	Record daily precipitation 100.0 mm (3.9 in)
1997-08-25	Record low minimum temperature	Record low minimum temperature 0.8 C (33.4 F)

Wettest Day of Each Month

Jul: 100.0 mm (3.9 in)

The wettest day on record for each calendar month at Kwinana Bp Refinery. The most was 100.0 mm (3.9 in) on 29 July 1987.

Record daily precipitation for each month at Kwinana Bp Refinery
Month	Record daily precipitation (mm)	Date
Jan	81.2 mm (3.2 in)	21 January 1982
Feb	80.6 mm (3.2 in)	22 February 1986
Mar	51.6 mm (2.0 in)	30 March 1997
Apr	68.4 mm (2.7 in)	8 April 1987
May	66.4 mm (2.6 in)	28 May 1980
Jun	91.4 mm (3.6 in)	26 June 1967
Jul	100.0 mm (3.9 in)	29 July 1987
Aug	70.0 mm (2.8 in)	4 August 1994
Sep	60.0 mm (2.4 in)	26 September 1987
Oct	42.6 mm (1.7 in)	18 October 1995
Nov	36.2 mm (1.4 in)	8 November 1984
Dec	26.4 mm (1.0 in)	7 December 2011

Period of Record Coverage

1955 to 2012

56 years of record at Kwinana Bp Refinery, 1955 to 2012. 22 years have data for under 90 percent of days and are left out of rankings: 1955, 1956, 1971, 1972, 1977, 1978, 1979, 1980 and others.

Days with data per year at Kwinana Bp Refinery
Year	Days with data	Share of year	Complete
1955	49	13%	No
1956	213	58%	No
1957	356	98%	Yes
1958	334	92%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	349	96%	Yes
1964	348	95%	Yes
1965	354	97%	Yes
1966	362	99%	Yes
1967	360	99%	Yes
1968	363	99%	Yes
1969	351	96%	Yes
1970	350	96%	Yes
1971	324	89%	No
1972	313	86%	No
1973	329	90%	Yes
1974	347	95%	Yes
1975	345	95%	Yes
1976	332	91%	Yes
1977	318	87%	No
1978	268	73%	No
1979	195	53%	No
1980	277	76%	No
1981	285	78%	No
1982	350	96%	Yes
1983	344	94%	Yes
1984	354	97%	Yes
1985	353	97%	Yes
1986	351	96%	Yes
1987	354	97%	Yes
1988	347	95%	Yes
1989	347	95%	Yes
1990	346	95%	Yes
1991	353	97%	Yes
1992	323	88%	No
1993	351	96%	Yes
1994	326	89%	No
1995	327	90%	No
1996	329	90%	No
1997	327	90%	No
1998	328	90%	No
1999	354	97%	Yes
2000	341	93%	Yes
2001	283	78%	No
2002	296	81%	No
2003	255	70%	No
2004	301	82%	No
2005	335	92%	Yes
2006	343	94%	Yes
2007	356	98%	Yes
2010	82	22%	No
2011	150	41%	No
2012	202	55%	No

Latest Records

Latest records at Kwinana Bp Refinery
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 October 2012	Kwinana Bp Refinery, AU	daily high max	31.0 C (87.8 F)	1.5 C (2.7 F)	8 years	11 of 100 (Routine)
13 October 2012	Kwinana Bp Refinery, AU	daily high min	18.8 C (65.8 F)	2.3 C (4.1 F)	24 years	20 of 100 (Routine)
12 October 2012	Kwinana Bp Refinery, AU	daily high min (Tie)	17.6 C (63.7 F)	tie	24 years	3 of 100 (Routine)
1 October 2012	Kwinana Bp Refinery, AU	daily high min	17.0 C (62.6 F)	0.9 C (1.6 F)	55 years	24 of 100 (Routine)
27 September 2012	Kwinana Bp Refinery, AU	daily low max	15.0 C (59.0 F)	0.7 C (1.3 F)	25 years	14 of 100 (Routine)
18 September 2012	Kwinana Bp Refinery, AU	daily high min	17.0 C (62.6 F)	0.8 C (1.4 F)	38 years	19 of 100 (Routine)
17 September 2012	Kwinana Bp Refinery, AU	daily high min	18.3 C (64.9 F)	0.8 C (1.4 F)	16 years	12 of 100 (Routine)
16 September 2012	Kwinana Bp Refinery, AU	daily high max	29.8 C (85.6 F)	3.0 C (5.4 F)	18 years	21 of 100 (Routine)
10 September 2012	Kwinana Bp Refinery, AU	daily high min	17.2 C (63.0 F)	1.0 C (1.8 F)	6 years	9 of 100 (Routine)
9 September 2012	Kwinana Bp Refinery, AU	daily high min	16.3 C (61.3 F)	0.7 C (1.3 F)	55 years	23 of 100 (Routine)
9 September 2012	Kwinana Bp Refinery, AU	daily high max	26.5 C (79.7 F)	0.8 C (1.4 F)	44 years	21 of 100 (Routine)
21 August 2012	Kwinana Bp Refinery, AU	daily high min	16.3 C (61.3 F)	0.8 C (1.4 F)	21 years	14 of 100 (Routine)
20 August 2012	Kwinana Bp Refinery, AU	monthly high min	17.3 C (63.1 F)	0.3 C (0.5 F)	14 years	20 of 100 (Routine)
10 August 2012	Kwinana Bp Refinery, AU	daily high max	24.2 C (75.6 F)	2.4 C (4.3 F)	49 years	30 of 100 (Routine)
8 August 2012	Kwinana Bp Refinery, AU	daily low max	11.2 C (52.2 F)	2.4 C (4.3 F)	56 years	32 of 100 (Routine)
30 July 2012	Kwinana Bp Refinery, AU	daily high max	23.8 C (74.8 F)	0.7 C (1.3 F)	15 years	12 of 100 (Routine)
24 July 2012	Kwinana Bp Refinery, AU	daily low max	13.1 C (55.6 F)	0.4 C (0.7 F)	39 years	18 of 100 (Routine)
3 May 2012	Kwinana Bp Refinery, AU	daily high min	19.2 C (66.6 F)	0.3 C (0.5 F)	7 years	8 of 100 (Routine)
29 April 2012	Kwinana Bp Refinery, AU	daily rain	18.6 mm (0.7 in)	9.5 mm (0.37 in)	57 years	20 of 100 (Routine)
30 March 2012	Kwinana Bp Refinery, AU	daily low max	20.4 C (68.7 F)	1.1 C (2.0 F)	18 years	12 of 100 (Routine)

Climate Trend

37 complete years, 1957 to 2007

One stripe for each of 37 complete years at Kwinana Bp Refinery, 1957 to 2007. Blue stripes are years cooler than the station's own mean of 18.8 C (65.8 F); red stripes are warmer. The coolest year was 1960, at 17.3 C (63.1 F), and the warmest was 1999, at 19.9 C (67.8 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Kwinana Bp Refinery as warming stripes, 1957 to 2007
Year	Annual mean temperature	Difference from the station mean
1957	17.9 C	-0.92 C
1959	18.7 C	-0.10 C
1960	17.3 C	-1.52 C
1961	18.8 C	+0.03 C
1962	18.9 C	+0.13 C
1963	19.1 C	+0.29 C
1964	17.8 C	-0.99 C
1965	19.0 C	+0.18 C
1966	18.2 C	-0.61 C
1967	19.0 C	+0.18 C
1968	17.4 C	-1.44 C
1969	18.4 C	-0.38 C
1970	18.7 C	-0.11 C
1974	18.6 C	-0.17 C
1975	18.6 C	-0.23 C
1976	19.1 C	+0.32 C
1982	19.0 C	+0.18 C
1983	19.5 C	+0.75 C
1984	18.7 C	-0.11 C
1985	19.3 C	+0.47 C
1986	18.1 C	-0.66 C
1987	18.9 C	+0.07 C
1988	19.4 C	+0.65 C
1989	18.8 C	-0.03 C
1990	18.4 C	-0.42 C
1991	19.0 C	+0.19 C
1993	18.4 C	-0.40 C
1994	19.4 C	+0.59 C
1995	19.2 C	+0.42 C
1996	19.6 C	+0.83 C
1997	19.5 C	+0.68 C
1998	19.3 C	+0.46 C
1999	19.9 C	+1.10 C
2000	19.4 C	+0.65 C
2005	18.0 C	-0.75 C
2006	19.1 C	+0.34 C
2007	19.0 C	+0.24 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1957 to 2007. In Fahrenheit: 0.4 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kwinana Bp Refinery
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.1 to 0.3) per decade	0.4 F (0.1 to 0.6) per decade	1957 to 2007	37	Rise
Mean daily maximum	0.2 C (0.1 to 0.4) per decade	0.4 F (0.2 to 0.7) per decade	1957 to 2007	37	Rise
Mean daily minimum	0.15 C (0.04 to 0.27) per decade	0.3 F (0.1 to 0.5) per decade	1957 to 2007	37	Rise

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

1955 to 2012

Yearly extremes at Kwinana Bp Refinery: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.2 C (109.8 F)	1977	39.7 C (103.5 F)	56
Coldest night (TNn)	0.8 C (33.4 F)	1997	5.0 C (41.0 F)	56
Wettest day (Rx1day)	100.0 mm (3.9 in)	1987	44.9 mm (1.8 in)	58
Wettest five days (Rx5day)	140.6 mm (5.5 in)	1982	83.2 mm (3.3 in)	58
Longest dry spell (CDD)	103 days	2004	43 days	58

Hottest day (TXx)

The hottest day of the year at Kwinana Bp Refinery, 1955 to 2012. The record is 43.2 C (109.8 F) in 1977, marked on the chart; the median year is 39.7 C (103.5 F).

Hottest day (TXx) at Kwinana Bp Refinery by year
Year	Hottest day (TXx)
1955	30.0 C (86.0 F)
1956	42.2 C (108.0 F)
1957	37.8 C (100.0 F)
1958	35.6 C (96.1 F)
1959	38.3 C (100.9 F)
1960	37.5 C (99.5 F)
1961	40.8 C (105.4 F)
1962	39.3 C (102.7 F)
1963	35.7 C (96.3 F)
1964	35.6 C (96.1 F)
1965	40.0 C (104.0 F)
1966	40.6 C (105.1 F)
1967	37.7 C (99.9 F)
1968	42.6 C (108.7 F)
1969	41.4 C (106.5 F)
1970	41.1 C (106.0 F)
1971	37.8 C (100.0 F)
1972	40.8 C (105.4 F)
1973	41.0 C (105.8 F)
1974	39.4 C (102.9 F)
1975	42.0 C (107.6 F)
1976	38.5 C (101.3 F)
1977	43.2 C (109.8 F)
1978	42.4 C (108.3 F)
1979	38.9 C (102.0 F)
1980	39.4 C (102.9 F)
1981	41.3 C (106.3 F)
1982	40.5 C (104.9 F)
1983	38.0 C (100.4 F)
1984	41.5 C (106.7 F)
1985	42.5 C (108.5 F)
1986	41.2 C (106.2 F)
1987	38.9 C (102.0 F)
1988	41.4 C (106.5 F)
1989	40.4 C (104.7 F)
1990	38.7 C (101.7 F)
1991	42.3 C (108.1 F)
1992	38.9 C (102.0 F)
1993	38.5 C (101.3 F)
1994	39.3 C (102.7 F)
1995	39.2 C (102.6 F)
1996	39.4 C (102.9 F)
1997	40.0 C (104.0 F)
1998	40.5 C (104.9 F)
1999	38.8 C (101.8 F)
2000	38.2 C (100.8 F)
2001	38.0 C (100.4 F)
2002	40.1 C (104.2 F)
2003	40.5 C (104.9 F)
2004	41.3 C (106.3 F)
2005	39.0 C (102.2 F)
2006	39.2 C (102.6 F)
2007	42.4 C (108.3 F)
2008	n/a
2009	n/a
2010	37.3 C (99.1 F)
2011	40.5 C (104.9 F)
2012	41.7 C (107.1 F)

Coldest night (TNn)

The coldest night of the year at Kwinana Bp Refinery, 1955 to 2012. The record is 0.8 C (33.4 F) in 1997, marked on the chart; the median year is 5.0 C (41.0 F).

Coldest night (TNn) at Kwinana Bp Refinery by year
Year	Coldest night (TNn)
1955	9.7 C (49.5 F)
1956	5.0 C (41.0 F)
1957	2.5 C (36.5 F)
1958	5.2 C (41.4 F)
1959	5.0 C (41.0 F)
1960	4.3 C (39.7 F)
1961	6.0 C (42.8 F)
1962	5.0 C (41.0 F)
1963	6.9 C (44.4 F)
1964	3.9 C (39.0 F)
1965	6.1 C (43.0 F)
1966	4.7 C (40.5 F)
1967	5.1 C (41.2 F)
1968	2.8 C (37.0 F)
1969	4.4 C (39.9 F)
1970	5.6 C (42.1 F)
1971	3.9 C (39.0 F)
1972	5.0 C (41.0 F)
1973	3.6 C (38.5 F)
1974	5.7 C (42.3 F)
1975	4.6 C (40.3 F)
1976	4.6 C (40.3 F)
1977	4.5 C (40.1 F)
1978	5.0 C (41.0 F)
1979	4.5 C (40.1 F)
1980	5.4 C (41.7 F)
1981	6.0 C (42.8 F)
1982	4.6 C (40.3 F)
1983	5.3 C (41.5 F)
1984	5.2 C (41.4 F)
1985	5.1 C (41.2 F)
1986	4.3 C (39.7 F)
1987	4.5 C (40.1 F)
1988	4.9 C (40.8 F)
1989	5.1 C (41.2 F)
1990	3.4 C (38.1 F)
1991	4.4 C (39.9 F)
1992	4.0 C (39.2 F)
1993	5.0 C (41.0 F)
1994	6.6 C (43.9 F)
1995	7.0 C (44.6 F)
1996	6.1 C (43.0 F)
1997	0.8 C (33.4 F)
1998	4.8 C (40.6 F)
1999	6.0 C (42.8 F)
2000	6.9 C (44.4 F)
2001	4.0 C (39.2 F)
2002	3.6 C (38.5 F)
2003	4.0 C (39.2 F)
2004	4.8 C (40.6 F)
2005	5.0 C (41.0 F)
2006	4.5 C (40.1 F)
2007	7.0 C (44.6 F)
2008	n/a
2009	n/a
2010	7.0 C (44.6 F)
2011	8.6 C (47.5 F)
2012	6.0 C (42.8 F)

Wettest day (Rx1day)

The wettest day of the year at Kwinana Bp Refinery, 1955 to 2012. The record is 100.0 mm (3.9 in) in 1987, marked on the chart; the median year is 44.9 mm (1.8 in).

Wettest day (Rx1day) at Kwinana Bp Refinery by year
Year	Wettest day (Rx1day)
1955	33.8 mm (1.3 in)
1956	41.9 mm (1.6 in)
1957	42.2 mm (1.7 in)
1958	47.0 mm (1.9 in)
1959	63.5 mm (2.5 in)
1960	34.0 mm (1.3 in)
1961	37.8 mm (1.5 in)
1962	51.1 mm (2.0 in)
1963	48.8 mm (1.9 in)
1964	49.5 mm (1.9 in)
1965	40.6 mm (1.6 in)
1966	41.9 mm (1.6 in)
1967	91.4 mm (3.6 in)
1968	58.9 mm (2.3 in)
1969	43.7 mm (1.7 in)
1970	75.2 mm (3.0 in)
1971	43.7 mm (1.7 in)
1972	40.6 mm (1.6 in)
1973	33.0 mm (1.3 in)
1974	38.0 mm (1.5 in)
1975	32.8 mm (1.3 in)
1976	40.0 mm (1.6 in)
1977	29.4 mm (1.2 in)
1978	71.6 mm (2.8 in)
1979	34.8 mm (1.4 in)
1980	66.4 mm (2.6 in)
1981	47.4 mm (1.9 in)
1982	81.2 mm (3.2 in)
1983	49.4 mm (1.9 in)
1984	51.6 mm (2.0 in)
1985	74.4 mm (2.9 in)
1986	80.6 mm (3.2 in)
1987	100.0 mm (3.9 in)
1988	62.6 mm (2.5 in)
1989	65.0 mm (2.6 in)
1990	33.6 mm (1.3 in)
1991	45.4 mm (1.8 in)
1992	28.8 mm (1.1 in)
1993	44.4 mm (1.7 in)
1994	70.0 mm (2.8 in)
1995	42.6 mm (1.7 in)
1996	43.8 mm (1.7 in)
1997	51.6 mm (2.0 in)
1998	31.2 mm (1.2 in)
1999	54.6 mm (2.1 in)
2000	48.2 mm (1.9 in)
2001	33.0 mm (1.3 in)
2002	50.0 mm (2.0 in)
2003	32.8 mm (1.3 in)
2004	22.0 mm (0.9 in)
2005	55.2 mm (2.2 in)
2006	30.2 mm (1.2 in)
2007	66.0 mm (2.6 in)
2008	52.0 mm (2.0 in)
2009	24.0 mm (0.9 in)
2010	24.2 mm (1.0 in)
2011	49.6 mm (2.0 in)
2012	18.6 mm (0.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Kwinana Bp Refinery, 1955 to 2012. The record is 140.6 mm (5.5 in) in 1982, marked on the chart; the median year is 83.2 mm (3.3 in).

Wettest five days (Rx5day) at Kwinana Bp Refinery by year
Year	Wettest five days (Rx5day)
1955	89.7 mm (3.5 in)
1956	93.5 mm (3.7 in)
1957	99.5 mm (3.9 in)
1958	99.9 mm (3.9 in)
1959	103.7 mm (4.1 in)
1960	63.7 mm (2.5 in)
1961	76.4 mm (3.0 in)
1962	73.9 mm (2.9 in)
1963	98.1 mm (3.9 in)
1964	104.3 mm (4.1 in)
1965	101.3 mm (4.0 in)
1966	93.0 mm (3.7 in)
1967	113.4 mm (4.5 in)
1968	99.1 mm (3.9 in)
1969	64.7 mm (2.5 in)
1970	127.8 mm (5.0 in)
1971	75.4 mm (3.0 in)
1972	85.6 mm (3.4 in)
1973	72.7 mm (2.9 in)
1974	104.2 mm (4.1 in)
1975	73.4 mm (2.9 in)
1976	79.2 mm (3.1 in)
1977	47.0 mm (1.9 in)
1978	92.2 mm (3.6 in)
1979	35.2 mm (1.4 in)
1980	101.0 mm (4.0 in)
1981	90.6 mm (3.6 in)
1982	140.6 mm (5.5 in)
1983	78.6 mm (3.1 in)
1984	89.2 mm (3.5 in)
1985	93.2 mm (3.7 in)
1986	104.6 mm (4.1 in)
1987	127.2 mm (5.0 in)
1988	91.8 mm (3.6 in)
1989	69.8 mm (2.7 in)
1990	71.8 mm (2.8 in)
1991	91.4 mm (3.6 in)
1992	56.8 mm (2.2 in)
1993	59.6 mm (2.3 in)
1994	82.5 mm (3.2 in)
1995	67.8 mm (2.7 in)
1996	71.0 mm (2.8 in)
1997	62.0 mm (2.4 in)
1998	64.4 mm (2.5 in)
1999	83.8 mm (3.3 in)
2000	102.4 mm (4.0 in)
2001	63.6 mm (2.5 in)
2002	94.4 mm (3.7 in)
2003	86.0 mm (3.4 in)
2004	45.8 mm (1.8 in)
2005	97.8 mm (3.9 in)
2006	59.6 mm (2.3 in)
2007	67.2 mm (2.6 in)
2008	73.4 mm (2.9 in)
2009	61.6 mm (2.4 in)
2010	72.4 mm (2.9 in)
2011	72.0 mm (2.8 in)
2012	44.6 mm (1.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Kwinana Bp Refinery, 1955 to 2012. The record is 103 days in 2004, marked on the chart; the median year is 43 days.

Longest dry spell (CDD) at Kwinana Bp Refinery by year
Year	Longest dry spell (CDD)
1955	32 days
1956	59 days
1957	62 days
1958	66 days
1959	33 days
1960	42 days
1961	24 days
1962	66 days
1963	34 days
1964	54 days
1965	25 days
1966	63 days
1967	28 days
1968	43 days
1969	54 days
1970	30 days
1971	29 days
1972	45 days
1973	55 days
1974	41 days
1975	70 days
1976	32 days
1977	64 days
1978	31 days
1979	27 days
1980	45 days
1981	48 days
1982	40 days
1983	39 days
1984	51 days
1985	44 days
1986	42 days
1987	60 days
1988	83 days
1989	39 days
1990	27 days
1991	53 days
1992	37 days
1993	39 days
1994	58 days
1995	47 days
1996	43 days
1997	54 days
1998	68 days
1999	43 days
2000	38 days
2001	73 days
2002	57 days
2003	36 days
2004	103 days
2005	62 days
2006	27 days
2007	35 days
2008	37 days
2009	37 days
2010	43 days
2011	64 days
2012	35 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

51 years, 1956 to 2010

A day with at least 46.0 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 106.3 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Kwinana Bp Refinery: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	46.0 mm (1.8 in)
5 years	61.8 mm (2.4 in)
10 years	72.5 mm (2.9 in)
25 years	86.0 mm (3.4 in)
50 years	96.2 mm (3.8 in)
100 years	106.3 mm (4.2 in)	Longer than the 51 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, 51 years of values from 1956 to 2010.

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: 100.0 mm (3.9 in) in 1987; 91.4 mm (3.6 in) in 1967; 81.2 mm (3.2 in) in 1982.

Download the Data

Data for Kwinana Bp Refinery standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kwinana Bp Refinery 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).