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Helensburgh (Sawan St) Weather Records (ASN00068028)

Record envelope, standing records and threshold days for Helensburgh (Sawan St) (ASN00068028), Australia, with 117 years of record.

Key Facts for Helensburgh (Sawan St)

  • Helensburgh (Sawan St) (ASN00068028) is a weather station in Australia at -34.19 latitude and 150.97 longitude, 238 m (781 ft) above sea level.
  • The station reports from 1889 to 2005, 117 years of record.
  • 0 records set at Helensburgh (Sawan St) still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Helensburgh (Sawan St) set a daily record precipitation of 9.4 mm (0.37 in) on 8 October 2005.

About the Station

  • Location: Australia, -34.19 latitude, 150.97 longitude.
  • Elevation: 238 m (781 ft).
  • Period of record: 1889 to 2005, 117 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Helensburgh (Sawan St), with 2026 drawn through them The band shows the record high and record low for each calendar day at Helensburgh (Sawan St). 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 Helensburgh (Sawan St). 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 Helensburgh (Sawan St), with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
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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
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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 Helensburgh (Sawan St) by the year they were set 0 records at Helensburgh (Sawan St) still stand. 00000000000
0 records at Helensburgh (Sawan St) still stand.
Standing records at Helensburgh (Sawan St) by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When Helensburgh (Sawan St) set new all-time records 1 all-time records were set at Helensburgh (Sawan St) between 23 January 1933 and 23 January 1933. Each dot is a new record. Record daily precipitation23 January 1933: Record daily precipitation 402.1 mm (15.8 in)
1 all-time records were set at Helensburgh (Sawan St) between 23 January 1933 and 23 January 1933. Each dot is a new record.
When Helensburgh (Sawan St) set new all-time records
DateKindDetail
1933-01-23Record daily precipitationRecord daily precipitation 402.1 mm (15.8 in)

Wettest Day of Each Month

Jan: 402.1 mm (15.8 in)
Record daily precipitation for each month at Helensburgh (Sawan St) The wettest day on record for each calendar month at Helensburgh (Sawan St). The most was 402.1 mm (15.8 in) on 23 January 1933. 0200400600 Jan: 402.1 mm (15.8 in), 23 January 1933 Jan Feb: 258.6 mm (10.2 in), 19 February 1959 Feb Mar: 211.5 mm (8.3 in), 16 March 1990 Mar Apr: 210.0 mm (8.3 in), 30 April 1988 Apr May: 309.4 mm (12.2 in), 16 May 1943 May Jun: 238.0 mm (9.4 in), 11 June 1991 Jun Jul: 211.0 mm (8.3 in), 4 July 1975 Jul Aug: 189.0 mm (7.4 in), 1 August 1990 Aug Sep: 155.4 mm (6.1 in), 4 September 1931 Sep Oct: 186.7 mm (7.4 in), 14 October 1942 Oct Nov: 292.1 mm (11.5 in), 14 November 1969 Nov Dec: 211.8 mm (8.3 in), 9 December 1970 Dec
The wettest day on record for each calendar month at Helensburgh (Sawan St). The most was 402.1 mm (15.8 in) on 23 January 1933.
Record daily precipitation for each month at Helensburgh (Sawan St)
MonthRecord daily precipitation (mm)Date
Jan402.1 mm (15.8 in)23 January 1933
Feb258.6 mm (10.2 in)19 February 1959
Mar211.5 mm (8.3 in)16 March 1990
Apr210.0 mm (8.3 in)30 April 1988
May309.4 mm (12.2 in)16 May 1943
Jun238.0 mm (9.4 in)11 June 1991
Jul211.0 mm (8.3 in)4 July 1975
Aug189.0 mm (7.4 in)1 August 1990
Sep155.4 mm (6.1 in)4 September 1931
Oct186.7 mm (7.4 in)14 October 1942
Nov292.1 mm (11.5 in)14 November 1969
Dec211.8 mm (8.3 in)9 December 1970

Latest Records

20
Latest records at Helensburgh (Sawan St)
DateStationRecordValueBeat old record byOld record stoodSignificance
8 October 2005Helensburgh (Sawan St), AUdaily rain9.4 mm (0.37 in)1.0 mm (0.04 in)82 years20 of 100 (Routine)
1 July 2005Helensburgh (Sawan St), AUdaily rain97.6 mm (3.8 in)9.2 mm (0.36 in)92 years40 of 100 (Notable)
5 April 2004Helensburgh (Sawan St), AUdaily rain139.4 mm (5.5 in)47.5 mm (1.9 in)104 years59 of 100 (Notable)
26 February 2004Helensburgh (Sawan St), AUdaily rain63.0 mm (2.5 in)0.8 mm (0.03 in)111 years40 of 100 (Notable)
3 July 2003Helensburgh (Sawan St), AUdaily rain36.6 mm (1.4 in)3.1 mm (0.12 in)28 years19 of 100 (Routine)
14 May 2003Helensburgh (Sawan St), AUdaily rain119.0 mm (4.7 in)78.4 mm (3.1 in)89 years63 of 100 (Major)
11 December 2002Helensburgh (Sawan St), AUdaily rain60.8 mm (2.4 in)9.0 mm (0.35 in)81 years38 of 100 (Notable)
30 March 2002Helensburgh (Sawan St), AUdaily rain65.0 mm (2.6 in)2.3 mm (0.09 in)52 years25 of 100 (Routine)
5 February 2002Helensburgh (Sawan St), AUdaily rain165.0 mm (6.5 in)114.2 mm (4.5 in)52 years65 of 100 (Major)
9 May 2001Helensburgh (Sawan St), AUdaily rain23.4 mm (0.9 in)1.6 mm (0.06 in)67 years20 of 100 (Routine)
15 November 2000Helensburgh (Sawan St), AUdaily rain45.8 mm (1.8 in)14.3 mm (0.6 in)71 years37 of 100 (Notable)
27 September 2000Helensburgh (Sawan St), AUdaily rain35.6 mm (1.4 in)7.2 mm (0.28 in)69 years33 of 100 (Routine)
21 March 2000Helensburgh (Sawan St), AUdaily rain58.0 mm (2.3 in)2.0 mm (0.08 in)22 years16 of 100 (Routine)
9 March 2000Helensburgh (Sawan St), AUdaily rain79.2 mm (3.1 in)15.7 mm (0.6 in)63 years33 of 100 (Routine)
24 October 1999Helensburgh (Sawan St), AUdaily rain174.0 mm (6.9 in)146.1 mm (5.8 in)60 years68 of 100 (Major)
14 July 1999Helensburgh (Sawan St), AUdaily rain110.0 mm (4.3 in)59.7 mm (2.4 in)38 years43 of 100 (Notable)
13 July 1999Helensburgh (Sawan St), AUdaily rain88.0 mm (3.5 in)28.3 mm (1.1 in)38 years31 of 100 (Routine)
18 August 1998Helensburgh (Sawan St), AUdaily rain145.0 mm (5.7 in)56.4 mm (2.2 in)11 years35 of 100 (Notable)
17 August 1998Helensburgh (Sawan St), AUdaily rain99.0 mm (3.9 in)72.3 mm (2.8 in)25 years45 of 100 (Notable)
16 August 1998Helensburgh (Sawan St), AUdaily rain102.0 mm (4.0 in)74.1 mm (2.9 in)56 years56 of 100 (Notable)

Extremes by Year

1889 to 2005
Yearly extremes at Helensburgh (Sawan St): the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)402.1 mm (15.8 in)1933144.0 mm (5.7 in)117
Wettest five days (Rx5day)640.5 mm (25.2 in)1961239.4 mm (9.4 in)117
Longest dry spell (CDD)78 days194628 days117

Wettest day (Rx1day)

Wettest day (Rx1day) at Helensburgh (Sawan St) by year The wettest day of the year at Helensburgh (Sawan St), 1889 to 2005. The record is 402.1 mm (15.8 in) in 1933, marked on the chart; the median year is 144.0 mm (5.7 in). 0100200300400500190019201940196019802000Record: 402.1 mm (15.8 in) in 1933
The wettest day of the year at Helensburgh (Sawan St), 1889 to 2005. The record is 402.1 mm (15.8 in) in 1933, marked on the chart; the median year is 144.0 mm (5.7 in).
Wettest day (Rx1day) at Helensburgh (Sawan St) by year
YearWettest day (Rx1day)
1889203.7 mm (8.0 in)
1890204.5 mm (8.1 in)
189164.8 mm (2.6 in)
1892115.1 mm (4.5 in)
189388.9 mm (3.5 in)
1894161.8 mm (6.4 in)
1895163.6 mm (6.4 in)
1896161.3 mm (6.4 in)
189780.8 mm (3.2 in)
1898239.5 mm (9.4 in)
189991.9 mm (3.6 in)
1900168.9 mm (6.6 in)
1901173.2 mm (6.8 in)
190280.0 mm (3.1 in)
190366.0 mm (2.6 in)
1904154.9 mm (6.1 in)
190590.4 mm (3.6 in)
1906176.5 mm (6.9 in)
190778.7 mm (3.1 in)
1908203.7 mm (8.0 in)
190971.1 mm (2.8 in)
1910196.1 mm (7.7 in)
1911309.9 mm (12.2 in)
191271.1 mm (2.8 in)
1913149.9 mm (5.9 in)
1914113.0 mm (4.4 in)
191585.6 mm (3.4 in)
1916120.4 mm (4.7 in)
1917124.5 mm (4.9 in)
191883.6 mm (3.3 in)
1919140.2 mm (5.5 in)
1920123.2 mm (4.9 in)
1921153.2 mm (6.0 in)
1922151.4 mm (6.0 in)
1923105.4 mm (4.1 in)
1924108.7 mm (4.3 in)
1925192.8 mm (7.6 in)
1926160.3 mm (6.3 in)
1927184.7 mm (7.3 in)
192882.0 mm (3.2 in)
1929140.7 mm (5.5 in)
1930144.3 mm (5.7 in)
1931205.2 mm (8.1 in)
1932170.7 mm (6.7 in)
1933402.1 mm (15.8 in)
1934154.9 mm (6.1 in)
193579.8 mm (3.1 in)
193659.7 mm (2.4 in)
1937128.8 mm (5.1 in)
1938149.9 mm (5.9 in)
193995.3 mm (3.8 in)
194091.4 mm (3.6 in)
194174.9 mm (2.9 in)
1942186.7 mm (7.4 in)
1943309.4 mm (12.2 in)
194455.1 mm (2.2 in)
1945148.6 mm (5.9 in)
194696.5 mm (3.8 in)
194787.6 mm (3.4 in)
1948108.5 mm (4.3 in)
1949203.2 mm (8.0 in)
1950172.7 mm (6.8 in)
1951158.8 mm (6.3 in)
1952129.5 mm (5.1 in)
1953162.6 mm (6.4 in)
1954154.9 mm (6.1 in)
1955177.8 mm (7.0 in)
1956217.4 mm (8.6 in)
1957104.1 mm (4.1 in)
1958181.6 mm (7.1 in)
1959258.6 mm (10.2 in)
196085.6 mm (3.4 in)
1961270.0 mm (10.6 in)
196255.9 mm (2.2 in)
1963156.5 mm (6.2 in)
1964106.7 mm (4.2 in)
196551.6 mm (2.0 in)
1966181.6 mm (7.1 in)
1967154.9 mm (6.1 in)
196885.9 mm (3.4 in)
1969292.1 mm (11.5 in)
1970211.8 mm (8.3 in)
197194.7 mm (3.7 in)
1972192.0 mm (7.6 in)
1973147.8 mm (5.8 in)
1974181.2 mm (7.1 in)
1975211.0 mm (8.3 in)
1976144.0 mm (5.7 in)
1977164.8 mm (6.5 in)
197884.0 mm (3.3 in)
197967.2 mm (2.6 in)
198056.2 mm (2.2 in)
198186.5 mm (3.4 in)
198256.2 mm (2.2 in)
1983110.0 mm (4.3 in)
1984159.2 mm (6.3 in)
198576.5 mm (3.0 in)
1986159.0 mm (6.3 in)
1987138.6 mm (5.5 in)
1988210.0 mm (8.3 in)
1989203.0 mm (8.0 in)
1990211.5 mm (8.3 in)
1991238.0 mm (9.4 in)
1992256.0 mm (10.1 in)
199358.8 mm (2.3 in)
199467.6 mm (2.7 in)
1995136.0 mm (5.4 in)
1996132.0 mm (5.2 in)
199772.0 mm (2.8 in)
1998145.0 mm (5.7 in)
1999174.0 mm (6.9 in)
200079.2 mm (3.1 in)
2001118.8 mm (4.7 in)
2002165.0 mm (6.5 in)
2003119.0 mm (4.7 in)
2004139.4 mm (5.5 in)
200597.6 mm (3.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Helensburgh (Sawan St) by year The wettest five days of the year at Helensburgh (Sawan St), 1889 to 2005. The record is 640.5 mm (25.2 in) in 1961, marked on the chart; the median year is 239.4 mm (9.4 in). 0200400600800190019201940196019802000Record: 640.5 mm (25.2 in) in 1961
The wettest five days of the year at Helensburgh (Sawan St), 1889 to 2005. The record is 640.5 mm (25.2 in) in 1961, marked on the chart; the median year is 239.4 mm (9.4 in).
Wettest five days (Rx5day) at Helensburgh (Sawan St) by year
YearWettest five days (Rx5day)
1889518.5 mm (20.4 in)
1890339.9 mm (13.4 in)
189196.6 mm (3.8 in)
1892321.4 mm (12.7 in)
1893197.9 mm (7.8 in)
1894249.8 mm (9.8 in)
1895249.9 mm (9.8 in)
1896315.2 mm (12.4 in)
1897224.9 mm (8.9 in)
1898319.0 mm (12.6 in)
1899209.8 mm (8.3 in)
1900364.7 mm (14.4 in)
1901173.2 mm (6.8 in)
190289.0 mm (3.5 in)
1903146.8 mm (5.8 in)
1904406.7 mm (16.0 in)
1905152.9 mm (6.0 in)
1906205.7 mm (8.1 in)
1907148.9 mm (5.9 in)
1908342.9 mm (13.5 in)
1909115.5 mm (4.5 in)
1910265.9 mm (10.5 in)
1911406.5 mm (16.0 in)
1912166.6 mm (6.6 in)
1913222.3 mm (8.8 in)
1914294.4 mm (11.6 in)
1915141.5 mm (5.6 in)
1916246.7 mm (9.7 in)
1917161.6 mm (6.4 in)
1918201.5 mm (7.9 in)
1919245.6 mm (9.7 in)
1920355.1 mm (14.0 in)
1921380.8 mm (15.0 in)
1922304.3 mm (12.0 in)
1923146.6 mm (5.8 in)
1924146.3 mm (5.8 in)
1925455.3 mm (17.9 in)
1926263.4 mm (10.4 in)
1927527.1 mm (20.8 in)
1928180.9 mm (7.1 in)
1929309.5 mm (12.2 in)
1930213.4 mm (8.4 in)
1931292.1 mm (11.5 in)
1932278.7 mm (11.0 in)
1933444.8 mm (17.5 in)
1934254.2 mm (10.0 in)
1935121.4 mm (4.8 in)
1936109.0 mm (4.3 in)
1937330.5 mm (13.0 in)
1938381.3 mm (15.0 in)
1939148.7 mm (5.9 in)
1940211.0 mm (8.3 in)
194180.0 mm (3.1 in)
1942381.0 mm (15.0 in)
1943584.5 mm (23.0 in)
194481.8 mm (3.2 in)
1945363.8 mm (14.3 in)
1946189.0 mm (7.4 in)
1947165.9 mm (6.5 in)
1948234.9 mm (9.2 in)
1949450.7 mm (17.7 in)
1950428.5 mm (16.9 in)
1951412.8 mm (16.3 in)
1952284.0 mm (11.2 in)
1953401.1 mm (15.8 in)
1954259.1 mm (10.2 in)
1955288.2 mm (11.3 in)
1956447.5 mm (17.6 in)
1957142.2 mm (5.6 in)
1958236.6 mm (9.3 in)
1959281.8 mm (11.1 in)
1960217.9 mm (8.6 in)
1961640.5 mm (25.2 in)
1962138.7 mm (5.5 in)
1963289.4 mm (11.4 in)
1964402.4 mm (15.8 in)
196579.4 mm (3.1 in)
1966240.8 mm (9.5 in)
1967268.5 mm (10.6 in)
1968109.8 mm (4.3 in)
1969379.2 mm (14.9 in)
1970265.1 mm (10.4 in)
1971172.1 mm (6.8 in)
1972322.6 mm (12.7 in)
1973182.4 mm (7.2 in)
1974306.2 mm (12.1 in)
1975244.5 mm (9.6 in)
1976266.0 mm (10.5 in)
1977237.4 mm (9.3 in)
1978164.0 mm (6.5 in)
1979143.1 mm (5.6 in)
198063.4 mm (2.5 in)
1981132.5 mm (5.2 in)
198253.0 mm (2.1 in)
1983131.6 mm (5.2 in)
1984168.8 mm (6.6 in)
198578.4 mm (3.1 in)
198678.0 mm (3.1 in)
1987239.4 mm (9.4 in)
1988389.2 mm (15.3 in)
1989113.8 mm (4.5 in)
1990330.0 mm (13.0 in)
1991586.4 mm (23.1 in)
1992281.8 mm (11.1 in)
199366.8 mm (2.6 in)
199476.6 mm (3.0 in)
1995165.2 mm (6.5 in)
1996182.0 mm (7.2 in)
1997172.0 mm (6.8 in)
1998376.0 mm (14.8 in)
1999224.7 mm (8.8 in)
2000177.3 mm (7.0 in)
2001215.4 mm (8.5 in)
2002301.8 mm (11.9 in)
2003317.0 mm (12.5 in)
2004178.4 mm (7.0 in)
2005142.8 mm (5.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Helensburgh (Sawan St) by year The longest dry spell of the year at Helensburgh (Sawan St), 1889 to 2005. The record is 78 days in 1946, marked on the chart; the median year is 28 days. 020406080190019201940196019802000Record: 78 days in 1946
The longest dry spell of the year at Helensburgh (Sawan St), 1889 to 2005. The record is 78 days in 1946, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Helensburgh (Sawan St) by year
YearLongest dry spell (CDD)
188913 days
189030 days
18918 days
189214 days
189321 days
189423 days
189526 days
189618 days
189732 days
189857 days
189921 days
190032 days
190144 days
190223 days
190326 days
190421 days
190527 days
190623 days
190726 days
190825 days
190922 days
191029 days
191126 days
191221 days
191344 days
191430 days
191538 days
191644 days
191737 days
191846 days
191931 days
192026 days
192124 days
192228 days
192325 days
192417 days
192541 days
192626 days
192734 days
192832 days
192928 days
193028 days
193120 days
193228 days
193317 days
193420 days
193537 days
193623 days
193727 days
193838 days
193952 days
194048 days
194134 days
194228 days
194358 days
194448 days
194538 days
194678 days
194726 days
194834 days
194921 days
195021 days
195140 days
195240 days
195345 days
195434 days
195537 days
195637 days
195728 days
195832 days
195922 days
196029 days
196121 days
196234 days
196321 days
196471 days
196525 days
196625 days
196725 days
196833 days
196921 days
197039 days
197143 days
197237 days
197340 days
197448 days
197541 days
197636 days
197724 days
197847 days
197929 days
198043 days
198139 days
198233 days
198324 days
198422 days
198518 days
198628 days
198723 days
198837 days
198954 days
199020 days
199122 days
199218 days
199323 days
199438 days
199532 days
199633 days
199742 days
199812 days
199914 days
200018 days
200124 days
200234 days
200318 days
200428 days
200537 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

90 years, 1890 to 2005

A day with at least 133.1 mm (5.2 in) of rain is expected about once in 2 years. A day with at least 333.1 mm (13.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Helensburgh (Sawan St): the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years133.1 mm (5.2 in)
5 years187.5 mm (7.4 in)
10 years223.2 mm (8.8 in)
25 years267.8 mm (10.5 in)
50 years300.7 mm (11.8 in)
100 years333.1 mm (13.1 in)Longer than the 90 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, 90 years of values from 1890 to 2005.

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: 402.1 mm (15.8 in) in 1933; 309.9 mm (12.2 in) in 1911; 309.4 mm (12.2 in) in 1943.

Download the Data

  • Data for Helensburgh (Sawan St) standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Helensburgh (Sawan St) 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 (2025-12-31).