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Perth Metro Weather Records (ASN00009225)

Record envelope, standing records and threshold days for Perth Metro (ASN00009225), Australia, with 34 years of record.

Key Facts for Perth Metro

  • Perth Metro (ASN00009225) is a weather station in Australia at -31.92 latitude and 115.87 longitude, 25 m (82 ft) above sea level.
  • The station reports from 1993 to 2026, 34 years of record.
  • 1,464 records set at Perth Metro still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Perth Metro set a daily record high maximum temperature of 28.9 C (84.0 F) on 18 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Australia, -31.92 latitude, 115.87 longitude.
  • Elevation: 25 m (82 ft).
  • Period of record: 1993 to 2026, 34 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

19 days at or beyond a record
Daily record high and record low at Perth Metro, with 2026 drawn through them The band shows the record high and record low for each calendar day at Perth Metro. The lines show the 2026 daily maximum and minimum. 19 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Perth Metro. The lines show the 2026 daily maximum and minimum. 19 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Perth Metro, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan44.4 C (111.9 F)8.9 C (48.0 F)40.7 C (105.3 F)13.6 C (56.5 F)
Feb44.5 C (112.1 F)9.9 C (49.8 F)41.9 C (107.4 F)14.7 C (58.5 F)
Mar42.4 C (108.3 F)6.3 C (43.3 F)40.3 C (104.5 F)11.8 C (53.2 F)
Apr39.5 C (103.1 F)4.7 C (40.5 F)31.3 C (88.3 F)7.2 C (45.0 F)
May34.3 C (93.7 F)1.3 C (34.3 F)28.3 C (82.9 F)2.5 C (36.5 F)
Jun26.2 C (79.2 F)-0.7 C (30.7 F)23.0 C (73.4 F)2.9 C (37.2 F)
Jul25.8 C (78.4 F)0.0 C (32.0 F)25.7 C (78.3 F)3.6 C (38.5 F)
Aug30.0 C (86.0 F)1.3 C (34.3 F)25.8 C (78.4 F)2.5 C (36.5 F)
Sep34.3 C (93.7 F)1.0 C (33.8 F)30.3 C (86.5 F)8.3 C (46.9 F)
Oct37.2 C (99.0 F)2.2 C (36.0 F)20.9 C (69.6 F)7.8 C (46.0 F)
Nov40.4 C (104.7 F)5.0 C (41.0 F)n/an/a
Dec44.2 C (111.6 F)6.6 C (43.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Perth Metro by the year they were set 1,464 records at Perth Metro still stand. 2005 holds the most, with 65. 0204060801993: 111994: 511995: 361996: 401997: 431998: 521999: 492000: 392001: 512002: 402003: 492004: 552005: 652006: 402007: 512008: 382009: 352010: 542011: 312012: 502013: 452014: 322015: 412016: 392017: 492018: 302019: 552020: 522021: 412022: 332023: 452024: 542025: 422026: 26199319972001200520092013201720212025
1,464 records at Perth Metro still stand. 2005 holds the most, with 65.
Standing records at Perth Metro by the year they were set
Year setStanding records
199311
199451
199536
199640
199743
199852
199949
200039
200151
200240
200349
200455
200565
200640
200751
200838
200935
201054
201131
201250
201345
201432
201541
201639
201749
201830
201955
202052
202141
202233
202345
202454
202542
202626

All-Time Record Progression

1 new records
When Perth Metro set new all-time records 1 all-time records were set at Perth Metro between 25 August 2025 and 25 August 2025. Each dot is a new record. Record low maximum temperature25 August 2025: Record low maximum temperature 11.4 C (52.5 F)2025
1 all-time records were set at Perth Metro between 25 August 2025 and 25 August 2025. Each dot is a new record.
When Perth Metro set new all-time records
DateKindDetail
2025-08-25Record low maximum temperatureRecord low maximum temperature 11.4 C (52.5 F)

Wettest Day of Each Month

Feb: 114.4 mm (4.5 in)
Record daily precipitation for each month at Perth Metro The wettest day on record for each calendar month at Perth Metro. The most was 114.4 mm (4.5 in) on 10 February 2017. 050100150 Jan: 104.0 mm (4.1 in), 22 January 2000 Jan Feb: 114.4 mm (4.5 in), 10 February 2017 Feb Mar: 62.8 mm (2.5 in), 28 March 2026 Mar Apr: 69.6 mm (2.7 in), 17 April 2002 Apr May: 50.4 mm (2.0 in), 2 May 2005 May Jun: 71.2 mm (2.8 in), 5 June 2023 Jun Jul: 88.8 mm (3.5 in), 30 July 2001 Jul Aug: 63.8 mm (2.5 in), 4 August 1994 Aug Sep: 35.8 mm (1.4 in), 22 September 2014 Sep Oct: 68.2 mm (2.7 in), 18 October 1995 Oct Nov: 40.4 mm (1.6 in), 9 November 2021 Nov Dec: 43.6 mm (1.7 in), 13 December 2011 Dec
The wettest day on record for each calendar month at Perth Metro. The most was 114.4 mm (4.5 in) on 10 February 2017.
Record daily precipitation for each month at Perth Metro
MonthRecord daily precipitation (mm)Date
Jan104.0 mm (4.1 in)22 January 2000
Feb114.4 mm (4.5 in)10 February 2017
Mar62.8 mm (2.5 in)28 March 2026
Apr69.6 mm (2.7 in)17 April 2002
May50.4 mm (2.0 in)2 May 2005
Jun71.2 mm (2.8 in)5 June 2023
Jul88.8 mm (3.5 in)30 July 2001
Aug63.8 mm (2.5 in)4 August 1994
Sep35.8 mm (1.4 in)22 September 2014
Oct68.2 mm (2.7 in)18 October 1995
Nov40.4 mm (1.6 in)9 November 2021
Dec43.6 mm (1.7 in)13 December 2011

Period of Record Coverage

1993 to 2026
Days with data per year at Perth Metro 34 years of record at Perth Metro, 1993 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1993, 2026. 1993: 61 of 365 days1994: 365 of 365 days1995: 363 of 365 days1996: 365 of 366 days1997: 364 of 365 days1998: 363 of 365 days1999: 362 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 363 of 365 days2020: 365 of 366 days2021: 362 of 365 days2022: 364 of 365 days2023: 364 of 365 days2024: 365 of 366 days2025: 363 of 365 days2026: 274 of 365 days1995200020052010201520202025
34 years of record at Perth Metro, 1993 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1993, 2026.
Days with data per year at Perth Metro
YearDays with dataShare of yearComplete
19936117%No
1994365100%Yes
199536399%Yes
1996365100%Yes
1997364100%Yes
199836399%Yes
199936299%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
201936399%Yes
2020365100%Yes
202136299%Yes
2022364100%Yes
2023364100%Yes
2024365100%Yes
202536399%Yes
202627475%No

Latest Records

20
Latest records at Perth Metro
DateStationRecordValueBeat old record byOld record stoodSignificance
18 September 2026Perth Metro, AUdaily high max (Provisional)28.9 C (84.0 F)2.9 C (5.2 F)8 years14 of 100 (Routine)
17 September 2026Perth Metro, AUdaily high max (Provisional)29.5 C (85.1 F)1.2 C (2.2 F)1 year6 of 100 (Routine)
17 September 2026Perth Metro, AUmonthly high min (Tie, Provisional)18.2 C (64.8 F)tie15 years4 of 100 (Routine)
16 September 2026Perth Metro, AUdaily high max (Provisional)30.3 C (86.5 F)1.7 C (3.1 F)13 years12 of 100 (Routine)
16 September 2026Perth Metro, AUdaily high min (Provisional)15.4 C (59.7 F)0.6 C (1.1 F)3 years4 of 100 (Routine)
12 September 2026Perth Metro, AUdaily high min (Provisional)15.6 C (60.1 F)0.4 C (0.7 F)17 years9 of 100 (Routine)
30 August 2026Perth Metro, AUdaily high max (Provisional)25.8 C (78.4 F)2.2 C (4.0 F)20 years18 of 100 (Routine)
27 August 2026Perth Metro, AUdaily low max (Provisional)16.0 C (60.8 F)0.1 C (0.2 F)21 years9 of 100 (Routine)
8 August 2026Perth Metro, AUdaily low max12.0 C (53.6 F)3.1 C (5.6 F)9 years17 of 100 (Routine)
3 August 2026Perth Metro, AUdaily high max25.3 C (77.5 F)1.4 C (2.5 F)16 years12 of 100 (Routine)
17 July 2026Perth Metro, AUdaily high min15.1 C (59.2 F)0.5 C (0.9 F)25 years11 of 100 (Routine)
16 July 2026Perth Metro, AUdaily high max23.5 C (74.3 F)0.7 C (1.3 F)1 year6 of 100 (Routine)
15 July 2026Perth Metro, AUdaily high max25.7 C (78.3 F)3.5 C (6.3 F)1 year19 of 100 (Routine)
9 July 2026Perth Metro, AUdaily high max22.8 C (73.0 F)0.5 C (0.9 F)4 years6 of 100 (Routine)
15 June 2026Perth Metro, AUdaily low max (Tie)15.4 C (59.7 F)tie12 years1 of 100 (Routine)
24 May 2026Perth Metro, AUdaily low min2.5 C (36.5 F)2.2 C (4.0 F)0 years9 of 100 (Routine)
23 May 2026Perth Metro, AUdaily low min4.0 C (39.2 F)0.6 C (1.1 F)25 years11 of 100 (Routine)
19 May 2026Perth Metro, AUdaily high max27.3 C (81.1 F)0.6 C (1.1 F)1 year4 of 100 (Routine)
3 May 2026Perth Metro, AUdaily low min5.9 C (42.6 F)0.7 C (1.3 F)7 years7 of 100 (Routine)
2 May 2026Perth Metro, AUdaily low max18.1 C (64.6 F)1.1 C (2.0 F)8 years8 of 100 (Routine)

Climate Trend

32 complete years, 1994 to 2025
Annual mean temperature at Perth Metro as warming stripes, 1994 to 2025 One stripe for each of 32 complete years at Perth Metro, 1994 to 2025. Blue stripes are years cooler than the station's own mean of 18.9 C (66.1 F); red stripes are warmer. The coolest year was 2005, at 17.9 C (64.2 F), and the warmest was 2024, at 20.2 C (68.3 F). The strongest colour marks a difference of 1.3 C (2.3 F). 1994: 18.8 C, -0.2 C from the station mean1995: 18.5 C, -0.4 C from the station mean1996: 18.7 C, -0.2 C from the station mean1997: 18.5 C, -0.4 C from the station mean1998: 18.5 C, -0.4 C from the station mean1999: 19.0 C, 0.0 C from the station mean2000: 18.7 C, -0.2 C from the station mean2001: 18.1 C, -0.9 C from the station mean2002: 18.6 C, -0.3 C from the station mean2003: 18.7 C, -0.3 C from the station mean2004: 18.6 C, -0.4 C from the station mean2005: 17.9 C, -1.0 C from the station mean2006: 18.6 C, -0.4 C from the station mean2007: 18.5 C, -0.4 C from the station mean2008: 18.5 C, -0.5 C from the station mean2009: 18.9 C, -0.1 C from the station mean2010: 18.8 C, -0.1 C from the station mean2011: 19.9 C, +0.9 C from the station mean2012: 19.4 C, +0.5 C from the station mean2013: 19.6 C, +0.7 C from the station mean2014: 19.5 C, +0.5 C from the station mean2015: 19.5 C, +0.6 C from the station mean2016: 18.4 C, -0.5 C from the station mean2017: 19.1 C, +0.1 C from the station mean2018: 18.8 C, -0.1 C from the station mean2019: 19.2 C, +0.3 C from the station mean2020: 19.4 C, +0.5 C from the station mean2021: 19.1 C, +0.1 C from the station mean2022: 19.2 C, +0.2 C from the station mean2023: 19.5 C, +0.6 C from the station mean2024: 20.2 C, +1.2 C from the station mean2025: 19.5 C, +0.5 C from the station mean1994200020052010201520202025
One stripe for each of 32 complete years at Perth Metro, 1994 to 2025. Blue stripes are years cooler than the station's own mean of 18.9 C (66.1 F); red stripes are warmer. The coolest year was 2005, at 17.9 C (64.2 F), and the warmest was 2024, at 20.2 C (68.3 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Perth Metro as warming stripes, 1994 to 2025
YearAnnual mean temperatureDifference from the station mean
199418.8 C-0.17 C
199518.5 C-0.41 C
199618.7 C-0.19 C
199718.5 C-0.42 C
199818.5 C-0.39 C
199919.0 C+0.04 C
200018.7 C-0.20 C
200118.1 C-0.86 C
200218.6 C-0.34 C
200318.7 C-0.28 C
200418.6 C-0.37 C
200517.9 C-1.04 C
200618.6 C-0.36 C
200718.5 C-0.44 C
200818.5 C-0.48 C
200918.9 C-0.07 C
201018.8 C-0.11 C
201119.9 C+0.92 C
201219.4 C+0.50 C
201319.6 C+0.68 C
201419.5 C+0.53 C
201519.5 C+0.56 C
201618.4 C-0.51 C
201719.1 C+0.12 C
201818.8 C-0.10 C
201919.2 C+0.31 C
202019.4 C+0.48 C
202119.1 C+0.14 C
202219.2 C+0.23 C
202319.5 C+0.57 C
202420.2 C+1.22 C
202519.5 C+0.53 C

The annual mean temperature here has risen by 0.4 C (0.2 to 0.5) per decade over 1994 to 2025. In Fahrenheit: 0.6 F (0.4 to 0.9) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Perth Metro
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.4 C (0.2 to 0.5) per decade0.6 F (0.4 to 0.9) per decade1994 to 202532Rise
Mean daily maximum0.4 C (0.2 to 0.6) per decade0.7 F (0.4 to 1.1) per decade1994 to 202532Rise
Mean daily minimum0.3 C (0.1 to 0.5) per decade0.5 F (0.2 to 0.8) per decade1994 to 202532Rise

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

1993 to 2026
Yearly extremes at Perth Metro: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)44.5 C (112.1 F)199742.0 C (107.6 F)34
Coldest night (TNn)-0.7 C (30.7 F)20061.3 C (34.3 F)34
Wettest day (Rx1day)114.4 mm (4.5 in)201744.7 mm (1.8 in)34
Wettest five days (Rx5day)132.0 mm (5.2 in)201783.6 mm (3.3 in)34
Longest dry spell (CDD)81 days201044 days34

Hottest day (TXx)

Hottest day (TXx) at Perth Metro by year The hottest day of the year at Perth Metro, 1993 to 2026. The record is 44.5 C (112.1 F) in 1997, marked on the chart; the median year is 42.0 C (107.6 F). 3840424446200020102020Record: 44.5 C (112.1 F) in 1997
The hottest day of the year at Perth Metro, 1993 to 2026. The record is 44.5 C (112.1 F) in 1997, marked on the chart; the median year is 42.0 C (107.6 F).
Hottest day (TXx) at Perth Metro by year
YearHottest day (TXx)
199341.0 C (105.8 F)
199441.1 C (106.0 F)
199540.2 C (104.4 F)
199642.4 C (108.3 F)
199744.5 C (112.1 F)
199842.6 C (108.7 F)
199939.6 C (103.3 F)
200040.3 C (104.5 F)
200139.7 C (103.5 F)
200240.7 C (105.3 F)
200342.0 C (107.6 F)
200441.5 C (106.7 F)
200542.0 C (107.6 F)
200640.1 C (104.2 F)
200744.2 C (111.6 F)
200841.9 C (107.4 F)
200941.8 C (107.2 F)
201042.9 C (109.2 F)
201140.4 C (104.7 F)
201242.1 C (107.8 F)
201340.5 C (104.9 F)
201443.3 C (109.9 F)
201544.4 C (111.9 F)
201642.5 C (108.5 F)
201742.0 C (107.6 F)
201841.2 C (106.2 F)
201942.1 C (107.8 F)
202042.7 C (108.9 F)
202143.5 C (110.3 F)
202242.5 C (108.5 F)
202339.5 C (103.1 F)
202443.4 C (110.1 F)
202543.6 C (110.5 F)
202641.9 C (107.4 F)

Coldest night (TNn)

Coldest night (TNn) at Perth Metro by year The coldest night of the year at Perth Metro, 1993 to 2026. The record is -0.7 C (30.7 F) in 2006, marked on the chart; the median year is 1.3 C (34.3 F). -2.502.557.510200020102020Record: -0.7 C (30.7 F) in 2006
The coldest night of the year at Perth Metro, 1993 to 2026. The record is -0.7 C (30.7 F) in 2006, marked on the chart; the median year is 1.3 C (34.3 F).
Coldest night (TNn) at Perth Metro by year
YearColdest night (TNn)
19939.2 C (48.6 F)
19942.2 C (36.0 F)
19951.0 C (33.8 F)
19962.0 C (35.6 F)
19970.0 C (32.0 F)
19980.0 C (32.0 F)
19991.8 C (35.2 F)
20001.3 C (34.3 F)
20010.7 C (33.3 F)
20020.9 C (33.6 F)
20031.2 C (34.2 F)
20040.4 C (32.7 F)
20050.2 C (32.4 F)
2006-0.7 C (30.7 F)
20073.1 C (37.6 F)
20080.7 C (33.3 F)
20091.5 C (34.7 F)
2010-0.6 C (30.9 F)
20111.3 C (34.3 F)
20120.4 C (32.7 F)
20131.4 C (34.5 F)
20141.9 C (35.4 F)
20150.8 C (33.4 F)
20160.6 C (33.1 F)
20171.7 C (35.1 F)
20182.8 C (37.0 F)
20191.6 C (34.9 F)
20203.4 C (38.1 F)
20211.1 C (34.0 F)
20222.5 C (36.5 F)
20230.7 C (33.3 F)
20243.3 C (37.9 F)
20250.3 C (32.5 F)
20262.5 C (36.5 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Perth Metro by year The wettest day of the year at Perth Metro, 1993 to 2026. The record is 114.4 mm (4.5 in) in 2017, marked on the chart; the median year is 44.7 mm (1.8 in). 255075100125200020102020Record: 114.4 mm (4.5 in) in 2017
The wettest day of the year at Perth Metro, 1993 to 2026. The record is 114.4 mm (4.5 in) in 2017, marked on the chart; the median year is 44.7 mm (1.8 in).
Wettest day (Rx1day) at Perth Metro by year
YearWettest day (Rx1day)
199341.8 mm (1.6 in)
199463.8 mm (2.5 in)
199568.2 mm (2.7 in)
199639.8 mm (1.6 in)
199736.6 mm (1.4 in)
199839.6 mm (1.6 in)
199941.8 mm (1.6 in)
2000104.0 mm (4.1 in)
200188.8 mm (3.5 in)
200269.6 mm (2.7 in)
200345.8 mm (1.8 in)
200433.4 mm (1.3 in)
200552.2 mm (2.1 in)
200627.0 mm (1.1 in)
200740.4 mm (1.6 in)
200858.6 mm (2.3 in)
200930.6 mm (1.2 in)
201040.6 mm (1.6 in)
201157.0 mm (2.2 in)
201240.8 mm (1.6 in)
201345.4 mm (1.8 in)
201451.2 mm (2.0 in)
201542.8 mm (1.7 in)
201636.4 mm (1.4 in)
2017114.4 mm (4.5 in)
201896.2 mm (3.8 in)
201958.0 mm (2.3 in)
202038.2 mm (1.5 in)
202146.2 mm (1.8 in)
202238.0 mm (1.5 in)
202371.2 mm (2.8 in)
202444.0 mm (1.7 in)
202541.0 mm (1.6 in)
202662.8 mm (2.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Perth Metro by year The wettest five days of the year at Perth Metro, 1993 to 2026. The record is 132.0 mm (5.2 in) in 2017, marked on the chart; the median year is 83.6 mm (3.3 in). 255075100125150200020102020Record: 132.0 mm (5.2 in) in 2017
The wettest five days of the year at Perth Metro, 1993 to 2026. The record is 132.0 mm (5.2 in) in 2017, marked on the chart; the median year is 83.6 mm (3.3 in).
Wettest five days (Rx5day) at Perth Metro by year
YearWettest five days (Rx5day)
199374.0 mm (2.9 in)
199492.2 mm (3.6 in)
1995109.6 mm (4.3 in)
1996120.6 mm (4.7 in)
199773.8 mm (2.9 in)
199882.8 mm (3.3 in)
199967.4 mm (2.7 in)
2000115.8 mm (4.6 in)
2001108.4 mm (4.3 in)
2002102.8 mm (4.0 in)
200386.2 mm (3.4 in)
200462.0 mm (2.4 in)
2005130.0 mm (5.1 in)
200647.2 mm (1.9 in)
200760.6 mm (2.4 in)
200879.4 mm (3.1 in)
200979.2 mm (3.1 in)
201099.0 mm (3.9 in)
201198.2 mm (3.9 in)
201253.4 mm (2.1 in)
201379.0 mm (3.1 in)
201478.0 mm (3.1 in)
201588.8 mm (3.5 in)
201674.2 mm (2.9 in)
2017132.0 mm (5.2 in)
2018106.0 mm (4.2 in)
201989.2 mm (3.5 in)
202062.4 mm (2.5 in)
202184.4 mm (3.3 in)
202266.6 mm (2.6 in)
2023130.6 mm (5.1 in)
202489.8 mm (3.5 in)
202577.4 mm (3.0 in)
202672.6 mm (2.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Perth Metro by year The longest dry spell of the year at Perth Metro, 1993 to 2026. The record is 81 days in 2010, marked on the chart; the median year is 44 days. 20406080100200020102020Record: 81 days in 2010
The longest dry spell of the year at Perth Metro, 1993 to 2026. The record is 81 days in 2010, marked on the chart; the median year is 44 days.
Longest dry spell (CDD) at Perth Metro by year
YearLongest dry spell (CDD)
199343 days
199468 days
199534 days
199643 days
199750 days
199852 days
199943 days
200038 days
200141 days
200260 days
200334 days
200450 days
200545 days
200629 days
200737 days
200837 days
200956 days
201081 days
201165 days
201259 days
201355 days
201479 days
201537 days
201648 days
201739 days
201855 days
201946 days
202026 days
202124 days
202260 days
202361 days
202441 days
202537 days
202627 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

32 years, 1994 to 2025

A day with at least 46.6 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 150.3 mm (5.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Perth Metro: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years46.6 mm (1.8 in)
5 years63.9 mm (2.5 in)
10 years78.6 mm (3.1 in)
25 years102.1 mm (4.0 in)
50 years124.0 mm (4.9 in)Longer than the 32 years of record
100 years150.3 mm (5.9 in)Longer than the 32 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, 32 years of values from 1994 to 2025.

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: 114.4 mm (4.5 in) in 2017; 104.0 mm (4.1 in) in 2000; 96.2 mm (3.8 in) in 2018.

Download the Data

  • Data for Perth Metro standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Perth Metro 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).