Built 2026-10-16 (16 October 2026)

Williamstown (South Para Reser Weather Records (ASN00023820)

Record envelope, standing records and threshold days for Williamstown (South Para Reser (ASN00023820), Australia, with 59 years of record.

Key Facts for Williamstown (South Para Reser

  • Williamstown (South Para Reser (ASN00023820) is a weather station in Australia at -34.68 latitude and 138.86 longitude, 280 m (919 ft) above sea level.
  • The station reports from 1968 to 2026, 59 years of record.
  • 0 records set at Williamstown (South Para Reser still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Williamstown (South Para Reser set a daily record precipitation of 44.2 mm (1.7 in) on 10 August 2026.

About the Station

  • Location: Australia, -34.68 latitude, 138.86 longitude.
  • Elevation: 280 m (919 ft).
  • Period of record: 1968 to 2026, 59 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Williamstown (South Para Reser, with 2026 drawn through them The band shows the record high and record low for each calendar day at Williamstown (South Para Reser. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Williamstown (South Para Reser. 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 Williamstown (South Para Reser, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Williamstown (South Para Reser by the year they were set 0 records at Williamstown (South Para Reser still stand. 00000000000
0 records at Williamstown (South Para Reser still stand.
Standing records at Williamstown (South Para Reser by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When Williamstown (South Para Reser set new all-time records 1 all-time records were set at Williamstown (South Para Reser between 8 December 2010 and 8 December 2010. Each dot is a new record. Record daily precipitation8 December 2010: Record daily precipitation 106.6 mm (4.2 in)2010
1 all-time records were set at Williamstown (South Para Reser between 8 December 2010 and 8 December 2010. Each dot is a new record.
When Williamstown (South Para Reser set new all-time records
DateKindDetail
2010-12-08Record daily precipitationRecord daily precipitation 106.6 mm (4.2 in)

Wettest Day of Each Month

Dec: 106.6 mm (4.2 in)
Record daily precipitation for each month at Williamstown (South Para Reser The wettest day on record for each calendar month at Williamstown (South Para Reser. The most was 106.6 mm (4.2 in) on 8 December 2010. 050100150 Jan: 49.2 mm (1.9 in), 31 January 1974 Jan Feb: 83.3 mm (3.3 in), 9 February 1969 Feb Mar: 61.4 mm (2.4 in), 16 March 1985 Mar Apr: 52.8 mm (2.1 in), 27 April 2007 Apr May: 56.2 mm (2.2 in), 30 May 2022 May Jun: 50.0 mm (2.0 in), 1 June 2013 Jun Jul: 48.0 mm (1.9 in), 28 July 1998 Jul Aug: 53.0 mm (2.1 in), 30 August 1992 Aug Sep: 57.2 mm (2.3 in), 30 September 2016 Sep Oct: 54.0 mm (2.1 in), 6 October 1980 Oct Nov: 65.2 mm (2.6 in), 8 November 2005 Nov Dec: 106.6 mm (4.2 in), 8 December 2010 Dec
The wettest day on record for each calendar month at Williamstown (South Para Reser. The most was 106.6 mm (4.2 in) on 8 December 2010.
Record daily precipitation for each month at Williamstown (South Para Reser
MonthRecord daily precipitation (mm)Date
Jan49.2 mm (1.9 in)31 January 1974
Feb83.3 mm (3.3 in)9 February 1969
Mar61.4 mm (2.4 in)16 March 1985
Apr52.8 mm (2.1 in)27 April 2007
May56.2 mm (2.2 in)30 May 2022
Jun50.0 mm (2.0 in)1 June 2013
Jul48.0 mm (1.9 in)28 July 1998
Aug53.0 mm (2.1 in)30 August 1992
Sep57.2 mm (2.3 in)30 September 2016
Oct54.0 mm (2.1 in)6 October 1980
Nov65.2 mm (2.6 in)8 November 2005
Dec106.6 mm (4.2 in)8 December 2010

Latest Records

20
Latest records at Williamstown (South Para Reser
DateStationRecordValueBeat old record byOld record stoodSignificance
10 August 2026Williamstown (South Para Reser, AUdaily rain44.2 mm (1.7 in)15.0 mm (0.6 in)53 years44 of 100 (Notable)
9 August 2026Williamstown (South Para Reser, AUdaily rain29.4 mm (1.2 in)3.8 mm (0.15 in)7 years13 of 100 (Routine)
2 June 2026Williamstown (South Para Reser, AUdaily rain41.0 mm (1.6 in)21.0 mm (0.8 in)49 years48 of 100 (Notable)
17 November 2025Williamstown (South Para Reser, AUdaily rain6.8 mm (0.27 in)1.2 mm (0.05 in)54 years20 of 100 (Routine)
22 October 2025Williamstown (South Para Reser, AUdaily rain39.4 mm (1.6 in)26.8 mm (1.1 in)51 years57 of 100 (Notable)
28 August 2025Williamstown (South Para Reser, AUdaily rain16.2 mm (0.6 in)2.4 mm (0.09 in)24 years15 of 100 (Routine)
27 July 2025Williamstown (South Para Reser, AUdaily rain19.2 mm (0.8 in)0.8 mm (0.03 in)12 years9 of 100 (Routine)
26 July 2025Williamstown (South Para Reser, AUdaily rain44.4 mm (1.7 in)18.2 mm (0.7 in)52 years49 of 100 (Notable)
8 June 2025Williamstown (South Para Reser, AUdaily rain19.4 mm (0.8 in)1.2 mm (0.05 in)24 years13 of 100 (Routine)
27 November 2024Williamstown (South Para Reser, AUdaily rain15.0 mm (0.6 in)11.0 mm (0.4 in)26 years20 of 100 (Routine)
16 August 2024Williamstown (South Para Reser, AUdaily rain21.2 mm (0.8 in)1.2 mm (0.05 in)7 years8 of 100 (Routine)
29 June 2024Williamstown (South Para Reser, AUdaily rain19.6 mm (0.8 in)1.1 mm (0.04 in)52 years20 of 100 (Routine)
28 November 2023Williamstown (South Para Reser, AUdaily rain24.2 mm (1.0 in)18.2 mm (0.7 in)4 years20 of 100 (Routine)
24 November 2023Williamstown (South Para Reser, AUdaily rain10.8 mm (0.4 in)2.4 mm (0.09 in)1 year8 of 100 (Routine)
23 June 2023Williamstown (South Para Reser, AUdaily rain43.0 mm (1.7 in)4.0 mm (0.16 in)41 years22 of 100 (Routine)
6 March 2023Williamstown (South Para Reser, AUdaily rain3.4 mm (0.13 in)2.6 mm (0.10 in)12 years11 of 100 (Routine)
26 February 2023Williamstown (South Para Reser, AUdaily rain12.4 mm (0.5 in)3.4 mm (0.13 in)47 years20 of 100 (Routine)
3 February 2023Williamstown (South Para Reser, AUdaily rain4.4 mm (0.17 in)2.0 mm (0.08 in)24 years13 of 100 (Routine)
29 January 2023Williamstown (South Para Reser, AUdaily rain (Tie)12.0 mm (0.5 in)tie11 years2 of 100 (Routine)
19 November 2022Williamstown (South Para Reser, AUdaily rain17.6 mm (0.7 in)1.4 mm (0.06 in)44 years20 of 100 (Routine)

Extremes by Year

1968 to 2026
Yearly extremes at Williamstown (South Para Reser: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)106.6 mm (4.2 in)201039.6 mm (1.6 in)59
Wettest five days (Rx5day)147.2 mm (5.8 in)200772.8 mm (2.9 in)59
Longest dry spell (CDD)73 days202531 days59

Wettest day (Rx1day)

Wettest day (Rx1day) at Williamstown (South Para Reser by year The wettest day of the year at Williamstown (South Para Reser, 1968 to 2026. The record is 106.6 mm (4.2 in) in 2010, marked on the chart; the median year is 39.6 mm (1.6 in). 0255075100125197019801990200020102020Record: 106.6 mm (4.2 in) in 2010
The wettest day of the year at Williamstown (South Para Reser, 1968 to 2026. The record is 106.6 mm (4.2 in) in 2010, marked on the chart; the median year is 39.6 mm (1.6 in).
Wettest day (Rx1day) at Williamstown (South Para Reser by year
YearWettest day (Rx1day)
196841.1 mm (1.6 in)
196983.3 mm (3.3 in)
197040.6 mm (1.6 in)
197140.6 mm (1.6 in)
197235.1 mm (1.4 in)
197358.2 mm (2.3 in)
197449.2 mm (1.9 in)
197532.0 mm (1.3 in)
197624.0 mm (0.9 in)
197727.0 mm (1.1 in)
197833.2 mm (1.3 in)
197940.0 mm (1.6 in)
198054.0 mm (2.1 in)
198148.2 mm (1.9 in)
198221.0 mm (0.8 in)
198332.4 mm (1.3 in)
198433.4 mm (1.3 in)
198561.4 mm (2.4 in)
198635.4 mm (1.4 in)
198735.4 mm (1.4 in)
198837.2 mm (1.5 in)
198934.4 mm (1.4 in)
199049.6 mm (2.0 in)
199147.6 mm (1.9 in)
199253.0 mm (2.1 in)
199335.0 mm (1.4 in)
199428.6 mm (1.1 in)
199530.0 mm (1.2 in)
199633.2 mm (1.3 in)
199744.6 mm (1.8 in)
199848.0 mm (1.9 in)
199931.0 mm (1.2 in)
200034.4 mm (1.4 in)
200133.0 mm (1.3 in)
200237.8 mm (1.5 in)
200340.8 mm (1.6 in)
200436.2 mm (1.4 in)
200565.2 mm (2.6 in)
200632.0 mm (1.3 in)
200752.8 mm (2.1 in)
200852.4 mm (2.1 in)
200934.6 mm (1.4 in)
2010106.6 mm (4.2 in)
201153.0 mm (2.1 in)
201234.0 mm (1.3 in)
201350.0 mm (2.0 in)
201466.0 mm (2.6 in)
201517.4 mm (0.7 in)
201657.2 mm (2.3 in)
201738.2 mm (1.5 in)
201831.0 mm (1.2 in)
201940.0 mm (1.6 in)
202039.6 mm (1.6 in)
202127.6 mm (1.1 in)
202256.2 mm (2.2 in)
202343.0 mm (1.7 in)
202421.2 mm (0.8 in)
202544.4 mm (1.7 in)
202644.2 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Williamstown (South Para Reser by year The wettest five days of the year at Williamstown (South Para Reser, 1968 to 2026. The record is 147.2 mm (5.8 in) in 2007, marked on the chart; the median year is 72.8 mm (2.9 in). 050100150197019801990200020102020Record: 147.2 mm (5.8 in) in 2007
The wettest five days of the year at Williamstown (South Para Reser, 1968 to 2026. The record is 147.2 mm (5.8 in) in 2007, marked on the chart; the median year is 72.8 mm (2.9 in).
Wettest five days (Rx5day) at Williamstown (South Para Reser by year
YearWettest five days (Rx5day)
196876.6 mm (3.0 in)
196989.7 mm (3.5 in)
197073.0 mm (2.9 in)
197178.0 mm (3.1 in)
197263.0 mm (2.5 in)
197385.9 mm (3.4 in)
1974117.6 mm (4.6 in)
197572.8 mm (2.9 in)
197636.4 mm (1.4 in)
197749.6 mm (2.0 in)
197862.0 mm (2.4 in)
197969.2 mm (2.7 in)
198065.4 mm (2.6 in)
1981117.2 mm (4.6 in)
198264.8 mm (2.6 in)
198376.2 mm (3.0 in)
198463.4 mm (2.5 in)
198562.6 mm (2.5 in)
198679.8 mm (3.1 in)
198782.4 mm (3.2 in)
198889.4 mm (3.5 in)
198952.0 mm (2.0 in)
199082.4 mm (3.2 in)
199188.8 mm (3.5 in)
1992116.8 mm (4.6 in)
199354.4 mm (2.1 in)
199450.6 mm (2.0 in)
199569.4 mm (2.7 in)
199674.0 mm (2.9 in)
199768.4 mm (2.7 in)
199871.4 mm (2.8 in)
199963.4 mm (2.5 in)
200063.0 mm (2.5 in)
200174.6 mm (2.9 in)
200278.0 mm (3.1 in)
200372.8 mm (2.9 in)
2004117.0 mm (4.6 in)
2005101.6 mm (4.0 in)
200654.0 mm (2.1 in)
2007147.2 mm (5.8 in)
200883.6 mm (3.3 in)
2009131.0 mm (5.2 in)
2010118.2 mm (4.7 in)
201198.6 mm (3.9 in)
201244.0 mm (1.7 in)
201368.6 mm (2.7 in)
2014126.0 mm (5.0 in)
201545.0 mm (1.8 in)
201688.8 mm (3.5 in)
201758.0 mm (2.3 in)
201848.2 mm (1.9 in)
201962.6 mm (2.5 in)
202061.4 mm (2.4 in)
202165.8 mm (2.6 in)
202287.4 mm (3.4 in)
202359.0 mm (2.3 in)
202457.8 mm (2.3 in)
202574.0 mm (2.9 in)
202684.0 mm (3.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Williamstown (South Para Reser by year The longest dry spell of the year at Williamstown (South Para Reser, 1968 to 2026. The record is 73 days in 2025, marked on the chart; the median year is 31 days. 020406080197019801990200020102020Record: 73 days in 2025
The longest dry spell of the year at Williamstown (South Para Reser, 1968 to 2026. The record is 73 days in 2025, marked on the chart; the median year is 31 days.
Longest dry spell (CDD) at Williamstown (South Para Reser by year
YearLongest dry spell (CDD)
196819 days
196934 days
197053 days
197123 days
197249 days
197322 days
197437 days
197523 days
197627 days
197729 days
197821 days
197932 days
198038 days
198121 days
198226 days
198323 days
198432 days
198571 days
198656 days
198725 days
198832 days
198935 days
199043 days
199159 days
199220 days
199336 days
199432 days
199527 days
199635 days
199730 days
199825 days
199931 days
200031 days
200124 days
200261 days
200328 days
200444 days
200529 days
200637 days
200756 days
200860 days
200961 days
201028 days
201121 days
201227 days
201326 days
201426 days
201538 days
201632 days
201747 days
201820 days
201944 days
202028 days
202131 days
202218 days
202323 days
202450 days
202573 days
202632 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

57 years, 1969 to 2025

A day with at least 39.0 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 94.2 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Williamstown (South Para Reser: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years39.0 mm (1.5 in)
5 years51.7 mm (2.0 in)
10 years60.9 mm (2.4 in)
25 years73.5 mm (2.9 in)
50 years83.5 mm (3.3 in)
100 years94.2 mm (3.7 in)Longer than the 57 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, 57 years of values from 1969 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: 106.6 mm (4.2 in) in 2010; 83.3 mm (3.3 in) in 1969; 66.0 mm (2.6 in) in 2014.

Download the Data

  • Data for Williamstown (South Para Reser standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Williamstown (South Para Reser 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 (2026-10-12).