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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

Flat Top Island Weather Records (ASN00033107)

Record envelope, standing records and threshold days for Flat Top Island (ASN00033107), Australia, with 47 years of record.

Key Facts for Flat Top Island

  • Flat Top Island (ASN00033107) is a weather station in Australia at -21.20 latitude and 149.25 longitude, n/a above sea level.
  • The station reports from 1899 to 1945, 47 years of record.
  • 0 records set at Flat Top Island still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Flat Top Island set a daily record precipitation of 24.4 mm (1.0 in) on 1 April 1945.

About the Station

  • Location: Australia, -21.20 latitude, 149.25 longitude.
  • Elevation: n/a.
  • Period of record: 1899 to 1945, 47 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Flat Top Island, with 2026 drawn through them The band shows the record high and record low for each calendar day at Flat Top Island. 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 Flat Top Island. 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 Flat Top Island, 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 Flat Top Island by the year they were set 0 records at Flat Top Island still stand. 00000000000
0 records at Flat Top Island still stand.
Standing records at Flat Top Island by the year they were set
Year setStanding records

Wettest Day of Each Month

Dec: 329.2 mm (13.0 in)
Record daily precipitation for each month at Flat Top Island The wettest day on record for each calendar month at Flat Top Island. The most was 329.2 mm (13.0 in) on 22 December 1909. 0100200300400 Jan: 216.7 mm (8.5 in), 5 January 1904 Jan Feb: 212.1 mm (8.4 in), 12 February 1937 Feb Mar: 193.0 mm (7.6 in), 27 March 1928 Mar Apr: 197.4 mm (7.8 in), 5 April 1941 Apr May: 156.2 mm (6.1 in), 22 May 1906 May Jun: 98.3 mm (3.9 in), 4 June 1923 Jun Jul: 121.4 mm (4.8 in), 10 July 1933 Jul Aug: 87.4 mm (3.4 in), 22 August 1940 Aug Sep: 91.9 mm (3.6 in), 5 September 1921 Sep Oct: 59.9 mm (2.4 in), 1 October 1904 Oct Nov: 133.1 mm (5.2 in), 20 November 1907 Nov Dec: 329.2 mm (13.0 in), 22 December 1909 Dec
The wettest day on record for each calendar month at Flat Top Island. The most was 329.2 mm (13.0 in) on 22 December 1909.
Record daily precipitation for each month at Flat Top Island
MonthRecord daily precipitation (mm)Date
Jan216.7 mm (8.5 in)5 January 1904
Feb212.1 mm (8.4 in)12 February 1937
Mar193.0 mm (7.6 in)27 March 1928
Apr197.4 mm (7.8 in)5 April 1941
May156.2 mm (6.1 in)22 May 1906
Jun98.3 mm (3.9 in)4 June 1923
Jul121.4 mm (4.8 in)10 July 1933
Aug87.4 mm (3.4 in)22 August 1940
Sep91.9 mm (3.6 in)5 September 1921
Oct59.9 mm (2.4 in)1 October 1904
Nov133.1 mm (5.2 in)20 November 1907
Dec329.2 mm (13.0 in)22 December 1909

Latest Records

20
Latest records at Flat Top Island
DateStationRecordValueBeat old record byOld record stoodSignificance
1 April 1945Flat Top Island, AUdaily rain24.4 mm (1.0 in)10.7 mm (0.4 in)18 years15 of 100 (Routine)
6 March 1945Flat Top Island, AUdaily rain43.7 mm (1.7 in)1.3 mm (0.05 in)32 years13 of 100 (Routine)
24 September 1944Flat Top Island, AUdaily rain5.3 mm (0.21 in)1.2 mm (0.05 in)22 years10 of 100 (Routine)
20 September 1944Flat Top Island, AUdaily rain3.3 mm (0.13 in)2.3 mm (0.09 in)37 years16 of 100 (Routine)
26 June 1944Flat Top Island, AUdaily rain28.2 mm (1.1 in)11.4 mm (0.4 in)10 years14 of 100 (Routine)
29 March 1944Flat Top Island, AUdaily rain58.7 mm (2.3 in)37.4 mm (1.5 in)6 years18 of 100 (Routine)
19 March 1944Flat Top Island, AUdaily rain49.8 mm (2.0 in)1.5 mm (0.06 in)19 years9 of 100 (Routine)
13 February 1944Flat Top Island, AUdaily rain125.2 mm (4.9 in)35.3 mm (1.4 in)0 years15 of 100 (Routine)
10 February 1944Flat Top Island, AUdaily rain43.2 mm (1.7 in)13.2 mm (0.5 in)10 years11 of 100 (Routine)
4 February 1944Flat Top Island, AUdaily rain71.4 mm (2.8 in)17.3 mm (0.7 in)18 years14 of 100 (Routine)
22 January 1944Flat Top Island, AUdaily rain75.4 mm (3.0 in)38.6 mm (1.5 in)13 years20 of 100 (Routine)
20 December 1943Flat Top Island, AUdaily rain36.6 mm (1.4 in)14.0 mm (0.6 in)36 years18 of 100 (Routine)
30 October 1943Flat Top Island, AUdaily rain9.9 mm (0.39 in)0.5 mm (0.02 in)6 years6 of 100 (Routine)
20 October 1943Flat Top Island, AUdaily rain19.8 mm (0.8 in)18.5 mm (0.7 in)28 years20 of 100 (Routine)
6 September 1943Flat Top Island, AUdaily rain28.7 mm (1.1 in)9.4 mm (0.37 in)9 years13 of 100 (Routine)
1 June 1943Flat Top Island, AUdaily rain47.8 mm (1.9 in)9.7 mm (0.38 in)32 years19 of 100 (Routine)
14 February 1943Flat Top Island, AUdaily rain51.3 mm (2.0 in)1.5 mm (0.06 in)0 years4 of 100 (Routine)
13 February 1943Flat Top Island, AUdaily rain89.9 mm (3.5 in)15.2 mm (0.6 in)0 years9 of 100 (Routine)
3 December 1942Flat Top Island, AUdaily rain30.2 mm (1.2 in)9.6 mm (0.38 in)25 years14 of 100 (Routine)
3 November 1942Flat Top Island, AUdaily rain22.4 mm (0.9 in)8.7 mm (0.34 in)4 years9 of 100 (Routine)

Extremes by Year

1899 to 1945
Yearly extremes at Flat Top Island: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)329.2 mm (13.0 in)1909121.9 mm (4.8 in)47
Wettest five days (Rx5day)481.4 mm (19.0 in)1913242.3 mm (9.5 in)47
Longest dry spell (CDD)103 days192833 days47

Wettest day (Rx1day)

Wettest day (Rx1day) at Flat Top Island by year The wettest day of the year at Flat Top Island, 1899 to 1945. The record is 329.2 mm (13.0 in) in 1909, marked on the chart; the median year is 121.9 mm (4.8 in). 010020030040019001910192019301940Record: 329.2 mm (13.0 in) in 1909
The wettest day of the year at Flat Top Island, 1899 to 1945. The record is 329.2 mm (13.0 in) in 1909, marked on the chart; the median year is 121.9 mm (4.8 in).
Wettest day (Rx1day) at Flat Top Island by year
YearWettest day (Rx1day)
189935.6 mm (1.4 in)
190053.3 mm (2.1 in)
1901117.9 mm (4.6 in)
190254.4 mm (2.1 in)
190369.6 mm (2.7 in)
1904216.7 mm (8.5 in)
1905162.6 mm (6.4 in)
1906156.2 mm (6.1 in)
1907133.1 mm (5.2 in)
1908160.0 mm (6.3 in)
1909329.2 mm (13.0 in)
1910183.9 mm (7.2 in)
1911171.7 mm (6.8 in)
191257.2 mm (2.3 in)
1913190.5 mm (7.5 in)
1914171.5 mm (6.8 in)
191569.9 mm (2.8 in)
191695.8 mm (3.8 in)
1917119.9 mm (4.7 in)
1918170.2 mm (6.7 in)
19198.1 mm (0.32 in)
1920131.6 mm (5.2 in)
1921121.9 mm (4.8 in)
192288.9 mm (3.5 in)
192398.3 mm (3.9 in)
1924114.3 mm (4.5 in)
192587.6 mm (3.4 in)
192669.9 mm (2.8 in)
1927259.8 mm (10.2 in)
1928193.0 mm (7.6 in)
1929129.5 mm (5.1 in)
1930147.8 mm (5.8 in)
1931119.4 mm (4.7 in)
1932120.7 mm (4.8 in)
1933138.7 mm (5.5 in)
193479.0 mm (3.1 in)
1935131.8 mm (5.2 in)
1936182.9 mm (7.2 in)
1937212.1 mm (8.4 in)
1938116.8 mm (4.6 in)
193953.1 mm (2.1 in)
1940190.5 mm (7.5 in)
1941197.4 mm (7.8 in)
194275.7 mm (3.0 in)
194395.8 mm (3.8 in)
1944125.2 mm (4.9 in)
194573.9 mm (2.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Flat Top Island by year The wettest five days of the year at Flat Top Island, 1899 to 1945. The record is 481.4 mm (19.0 in) in 1913, marked on the chart; the median year is 242.3 mm (9.5 in). 020040060019001910192019301940Record: 481.4 mm (19.0 in) in 1913
The wettest five days of the year at Flat Top Island, 1899 to 1945. The record is 481.4 mm (19.0 in) in 1913, marked on the chart; the median year is 242.3 mm (9.5 in).
Wettest five days (Rx5day) at Flat Top Island by year
YearWettest five days (Rx5day)
189967.3 mm (2.6 in)
1900196.1 mm (7.7 in)
1901313.7 mm (12.4 in)
190284.1 mm (3.3 in)
1903142.7 mm (5.6 in)
1904279.1 mm (11.0 in)
1905327.9 mm (12.9 in)
1906236.9 mm (9.3 in)
1907164.6 mm (6.5 in)
1908380.5 mm (15.0 in)
1909351.3 mm (13.8 in)
1910301.2 mm (11.9 in)
1911306.6 mm (12.1 in)
1912108.7 mm (4.3 in)
1913481.4 mm (19.0 in)
1914342.1 mm (13.5 in)
1915173.3 mm (6.8 in)
1916161.8 mm (6.4 in)
1917305.6 mm (12.0 in)
1918308.9 mm (12.2 in)
19198.1 mm (0.32 in)
1920244.1 mm (9.6 in)
1921256.6 mm (10.1 in)
1922153.7 mm (6.1 in)
1923150.9 mm (5.9 in)
1924190.5 mm (7.5 in)
1925142.3 mm (5.6 in)
192697.2 mm (3.8 in)
1927376.8 mm (14.8 in)
1928385.1 mm (15.2 in)
1929228.0 mm (9.0 in)
1930242.3 mm (9.5 in)
1931162.8 mm (6.4 in)
1932262.2 mm (10.3 in)
1933342.9 mm (13.5 in)
1934140.5 mm (5.5 in)
1935204.5 mm (8.1 in)
1936332.9 mm (13.1 in)
1937397.2 mm (15.6 in)
1938415.3 mm (16.4 in)
1939139.4 mm (5.5 in)
1940437.7 mm (17.2 in)
1941253.6 mm (10.0 in)
1942211.4 mm (8.3 in)
1943238.5 mm (9.4 in)
1944244.4 mm (9.6 in)
1945185.7 mm (7.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Flat Top Island by year The longest dry spell of the year at Flat Top Island, 1899 to 1945. The record is 103 days in 1928, marked on the chart; the median year is 33 days. 025507510012519001910192019301940Record: 103 days in 1928
The longest dry spell of the year at Flat Top Island, 1899 to 1945. The record is 103 days in 1928, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Flat Top Island by year
YearLongest dry spell (CDD)
189932 days
190025 days
190140 days
190261 days
190331 days
190470 days
190527 days
190621 days
190738 days
190836 days
190924 days
191032 days
191137 days
191232 days
191370 days
191452 days
191539 days
191645 days
191749 days
191842 days
191953 days
192025 days
192125 days
192241 days
192378 days
192449 days
192536 days
192662 days
192724 days
1928103 days
192976 days
193031 days
193126 days
193232 days
193322 days
193425 days
193531 days
193633 days
193718 days
193822 days
193942 days
194030 days
194173 days
194222 days
194345 days
194429 days
194516 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

43 years, 1900 to 1944

A day with at least 126.3 mm (5.0 in) of rain is expected about once in 2 years. A day with at least 312.3 mm (12.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Flat Top Island: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years126.3 mm (5.0 in)
5 years179.3 mm (7.1 in)
10 years213.1 mm (8.4 in)
25 years254.3 mm (10.0 in)
50 years283.8 mm (11.2 in)Longer than the 43 years of record
100 years312.3 mm (12.3 in)Longer than the 43 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, 43 years of values from 1900 to 1944.

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: 329.2 mm (13.0 in) in 1909; 259.8 mm (10.2 in) in 1927; 216.7 mm (8.5 in) in 1904.

Download the Data

  • Data for Flat Top Island standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Flat Top Island 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).