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Built 2026-10-19 (19 October 2026)

Neptune Island Threshold Days by Year (ASN00018115)

7 fixed thresholds counted per year at Neptune Island (ASN00018115): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Neptune Island Thresholds

  • Neptune Island: days with 10 mm (0.39 in) or more of precipitation in 52 years, most in 1978 with 20.
  • Neptune Island: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 2009 with 7.
  • Neptune Island: nights with a minimum temperature at or above 20 C (68 F) in 42 years, most in 2013 with 16.
  • Neptune Island: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 2011 with 5.
  • 7 fixed thresholds have at least one qualifying day at Neptune Island.
43 years with a qualifying day
Days at or above 30 C (86 F) per year at Neptune Island Days per year at Neptune Island with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 2009. 024681962: 21963: 21965: 21966: 11968: 51969: 11973: 31974: 21975: 31977: 11978: 11979: 21980: 41981: 11982: 31983: 51985: 11986: 21988: 11989: 11991: 11993: 41994: 21997: 51998: 12004: 12005: 22006: 12007: 32008: 22009: 72010: 62011: 22012: 42013: 62014: 32015: 42016: 12017: 22021: 12023: 12024: 12025: 2196219691978198319912004200920142023
Days per year at Neptune Island with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 2009.
Days at or above 30 C (86 F) per year at Neptune Island
YearDaysDecade average
196222.2
196322.2
196522.2
196612.2
196852.2
196912.2
197332
197422
197532
197712
197812
197922
198042.3
198112.3
198232.3
198352.3
198512.3
198622.3
198812.3
198912.3
199112.6
199342.6
199422.6
199752.6
199812.6
200412.7
200522.7
200612.7
200732.7
200822.7
200972.7
201063.5
201123.5
201243.5
201363.5
201433.5
201543.5
201613.5
201723.5
202111.3
202311.3
202411.3
202521.3
First to last qualifying date each year at Neptune Island For each year, a bar from the first to the last day at Neptune Island meeting 30 C (86 F). 1962: 16 January 1962 to 30 November 19621963: 11 January 1963 to 4 December 19631965: 15 February 1965 to 2 March 19651966: 7 March 1966 to 7 March 19661968: 23 January 1968 to 20 February 19681969: 7 January 1969 to 7 January 19691973: 2 January 1973 to 12 December 19731974: 25 January 1974 to 2 March 19741975: 6 February 1975 to 18 February 19751977: 9 January 1977 to 9 January 19771978: 25 November 1978 to 25 November 19781979: 4 January 1979 to 2 February 19791980: 12 February 1980 to 9 December 19801981: 2 February 1981 to 2 February 19811982: 23 January 1982 to 24 November 19821983: 31 January 1983 to 16 February 19831985: 13 January 1985 to 13 January 19851986: 7 February 1986 to 25 November 19861988: 28 January 1988 to 28 January 19881989: 15 January 1989 to 15 January 19891991: 2 January 1991 to 2 January 19911993: 1 February 1993 to 26 November 19931994: 25 January 1994 to 5 December 19941997: 5 January 1997 to 21 February 19971998: 11 March 1998 to 11 March 19982004: 14 February 2004 to 14 February 20042005: 11 January 2005 to 25 January 20052006: 21 January 2006 to 21 January 20062007: 16 January 2007 to 31 December 20072008: 9 March 2008 to 17 March 20082009: 13 January 2009 to 30 December 20092010: 8 January 2010 to 4 December 20102011: 30 January 2011 to 31 January 20112012: 23 January 2012 to 25 February 20122013: 4 January 2013 to 19 December 20132014: 14 January 2014 to 16 January 20142015: 2 January 2015 to 30 December 20152016: 12 December 2016 to 12 December 20162017: 6 January 2017 to 8 February 20172021: 24 January 2021 to 24 January 20212023: 16 February 2023 to 16 February 20232024: 11 March 2024 to 11 March 20242025: 3 February 2025 to 15 March 202519621973198019881998200920152025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Neptune Island meeting 30 C (86 F).
First to last qualifying date each year at Neptune Island
YearFirst dateLast date
19621962-01-161962-11-30
19631963-01-111963-12-04
19651965-02-151965-03-02
19661966-03-071966-03-07
19681968-01-231968-02-20
19691969-01-071969-01-07
19731973-01-021973-12-12
19741974-01-251974-03-02
19751975-02-061975-02-18
19771977-01-091977-01-09
19781978-11-251978-11-25
19791979-01-041979-02-02
19801980-02-121980-12-09
19811981-02-021981-02-02
19821982-01-231982-11-24
19831983-01-311983-02-16
19851985-01-131985-01-13
19861986-02-071986-11-25
19881988-01-281988-01-28
19891989-01-151989-01-15
19911991-01-021991-01-02
19931993-02-011993-11-26
19941994-01-251994-12-05
19971997-01-051997-02-21
19981998-03-111998-03-11
20042004-02-142004-02-14
20052005-01-112005-01-25
20062006-01-212006-01-21
20072007-01-162007-12-31
20082008-03-092008-03-17
20092009-01-132009-12-30
20102010-01-082010-12-04
20112011-01-302011-01-31
20122012-01-232012-02-25
20132013-01-042013-12-19
20142014-01-142014-01-16
20152015-01-022015-12-30
20162016-12-122016-12-12
20172017-01-062017-02-08
20212021-01-242021-01-24
20232023-02-162023-02-16
20242024-03-112024-03-11
20252025-02-032025-03-15

Every Fixed Threshold

Fixed thresholds at Neptune Island
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days43720092
35 C (95 F): Days3119821
90 F (32.2 C): Days22219651
20 C (68 F): Tropical nights (min421620131
10 mm (0.39 in): Days with 10 mm or more rain5220197812
25 mm (0.98 in): Days with 25 mm or more rain35520111
50 mm (1.97 in): Days with 50 mm or more rain3119921

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

  • Data for Neptune 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).