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Built 2026-10-19 (19 October 2026)

Omanama Threshold Days by Year (ASN00041078)

3 fixed thresholds counted per year at Omanama (ASN00041078): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Omanama Thresholds

  • Omanama: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1924 with 35.
  • Omanama: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1916 with 10.
  • Omanama: days with 50 mm (1.97 in) or more of precipitation in 23 years, most in 1917 with 5.
  • 3 fixed thresholds have at least one qualifying day at Omanama.
33 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Omanama Days per year at Omanama with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1924. 0102030401912: 211913: 91914: 231915: 91916: 341917: 291918: 111919: 71920: 191921: 231922: 121923: 101924: 351925: 181926: 191927: 171928: 221929: 181930: 201931: 271932: 161933: 281934: 241935: 111936: 151937: 191938: 121939: 161940: 171941: 141943: 181944: 121948: 24191219161920192419281932193619401948
Days per year at Omanama with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1924.
Days with 10 mm (0.39 in) or more of precipitation per year at Omanama
YearDaysDecade average
19122117.9
1913917.9
19142317.9
1915917.9
19163417.9
19172917.9
19181117.9
1919717.9
19201919.3
19212319.3
19221219.3
19231019.3
19243519.3
19251819.3
19261919.3
19271719.3
19282219.3
19291819.3
19302018.8
19312718.8
19321618.8
19332818.8
19342418.8
19351118.8
19361518.8
19371918.8
19381218.8
19391618.8
19401717
19411417
19431817
19441217
19482417
First to last qualifying date each year at Omanama For each year, a bar from the first to the last day at Omanama meeting 10 mm (0.39 in). 1912: 5 January 1912 to 30 December 19121913: 5 January 1913 to 27 September 19131914: 13 January 1914 to 31 December 19141915: 1 January 1915 to 21 December 19151916: 10 January 1916 to 16 December 19161917: 20 January 1917 to 25 December 19171918: 2 January 1918 to 27 November 19181919: 30 January 1919 to 18 December 19191920: 16 January 1920 to 8 December 19201921: 18 February 1921 to 28 December 19211922: 1 January 1922 to 18 December 19221923: 6 January 1923 to 27 December 19231924: 5 January 1924 to 10 December 19241925: 2 January 1925 to 31 December 19251926: 26 January 1926 to 29 December 19261927: 3 January 1927 to 21 December 19271928: 8 January 1928 to 18 December 19281929: 5 February 1929 to 29 December 19291930: 25 January 1930 to 18 December 19301931: 10 January 1931 to 8 December 19311932: 3 April 1932 to 25 December 19321933: 6 January 1933 to 22 December 19331934: 4 January 1934 to 30 December 19341935: 6 January 1935 to 4 December 19351936: 10 January 1936 to 22 December 19361937: 11 January 1937 to 22 November 19371938: 4 January 1938 to 28 November 19381939: 24 January 1939 to 28 December 19391940: 8 January 1940 to 29 December 19401941: 8 January 1941 to 10 November 19411943: 4 January 1943 to 29 December 19431944: 25 January 1944 to 28 December 19441948: 2 January 1948 to 1 November 19481912191719221927193219371943JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Omanama meeting 10 mm (0.39 in).
First to last qualifying date each year at Omanama
YearFirst dateLast date
19121912-01-051912-12-30
19131913-01-051913-09-27
19141914-01-131914-12-31
19151915-01-011915-12-21
19161916-01-101916-12-16
19171917-01-201917-12-25
19181918-01-021918-11-27
19191919-01-301919-12-18
19201920-01-161920-12-08
19211921-02-181921-12-28
19221922-01-011922-12-18
19231923-01-061923-12-27
19241924-01-051924-12-10
19251925-01-021925-12-31
19261926-01-261926-12-29
19271927-01-031927-12-21
19281928-01-081928-12-18
19291929-02-051929-12-29
19301930-01-251930-12-18
19311931-01-101931-12-08
19321932-04-031932-12-25
19331933-01-061933-12-22
19341934-01-041934-12-30
19351935-01-061935-12-04
19361936-01-101936-12-22
19371937-01-111937-11-22
19381938-01-041938-11-28
19391939-01-241939-12-28
19401940-01-081940-12-29
19411941-01-081941-11-10
19431943-01-041943-12-29
19441944-01-251944-12-28
19481948-01-021948-11-01

Every Fixed Threshold

Fixed thresholds at Omanama
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3335192424
25 mm (0.98 in): Days with 25 mm or more rain331019165
50 mm (1.97 in): Days with 50 mm or more rain23519171

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1912.

Download the Data

  • Data for Omanama 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 (2025-12-31).