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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Umikoa 118 Threshold Days by Year

5 fixed thresholds counted per year at Umikoa 118 (USC00518780): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Umikoa 118 Thresholds

  • Umikoa 118: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1930 with 60.
  • Umikoa 118: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1934 with 31.
  • Umikoa 118: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 1929 with 18.
  • Umikoa 118: days with 100 mm (3.94 in) or more of precipitation in 23 years, most in 1923 with 8.
  • 5 fixed thresholds have at least one qualifying day at Umikoa 118.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Umikoa 118 Days per year at Umikoa 118 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 60 in 1930. 02040601921: 301922: 411923: 491925: 381926: 251927: 401928: 331929: 531930: 601931: 331932: 221933: 291934: 441935: 421950: 591951: 331952: 501953: 211954: 491955: 261956: 431957: 431964: 481965: 441966: 411971: 20192119251928193119341951195419571966
Days per year at Umikoa 118 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 60 in 1930.
Days with 10 mm (0.39 in) or more of precipitation per year at Umikoa 118
YearDaysDecade average
19213038.6
19224138.6
19234938.6
19253838.6
19262538.6
19274038.6
19283338.6
19295338.6
19306038.3
19313338.3
19322238.3
19332938.3
19344438.3
19354238.3
19505940.5
19513340.5
19525040.5
19532140.5
19544940.5
19552640.5
19564340.5
19574340.5
19644844.3
19654444.3
19664144.3
19712020
First to last qualifying date each year at Umikoa 118 For each year, a bar from the first to the last day at Umikoa 118 meeting 10 mm (0.39 in). 1921: 3 March 1921 to 26 December 19211922: 5 January 1922 to 26 November 19221923: 3 January 1923 to 19 December 19231925: 8 January 1925 to 26 December 19251926: 30 January 1926 to 17 November 19261927: 3 January 1927 to 28 December 19271928: 14 January 1928 to 26 December 19281929: 3 January 1929 to 31 December 19291930: 3 January 1930 to 28 December 19301931: 25 February 1931 to 21 December 19311932: 8 February 1932 to 3 December 19321933: 14 January 1933 to 27 December 19331934: 8 January 1934 to 27 December 19341935: 3 January 1935 to 21 December 19351950: 2 January 1950 to 30 December 19501951: 1 January 1951 to 31 December 19511952: 2 January 1952 to 19 December 19521953: 9 February 1953 to 28 December 19531954: 5 January 1954 to 31 December 19541955: 2 January 1955 to 20 December 19551956: 9 January 1956 to 1 December 19561957: 7 January 1957 to 31 December 19571964: 7 January 1964 to 20 December 19641965: 11 January 1965 to 18 December 19651966: 7 January 1966 to 31 December 19661971: 4 January 1971 to 30 December 19711921192619301934195219561966JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Umikoa 118 meeting 10 mm (0.39 in).
First to last qualifying date each year at Umikoa 118
YearFirst dateLast date
19211921-03-031921-12-26
19221922-01-051922-11-26
19231923-01-031923-12-19
19251925-01-081925-12-26
19261926-01-301926-11-17
19271927-01-031927-12-28
19281928-01-141928-12-26
19291929-01-031929-12-31
19301930-01-031930-12-28
19311931-02-251931-12-21
19321932-02-081932-12-03
19331933-01-141933-12-27
19341934-01-081934-12-27
19351935-01-031935-12-21
19501950-01-021950-12-30
19511951-01-011951-12-31
19521952-01-021952-12-19
19531953-02-091953-12-28
19541954-01-051954-12-31
19551955-01-021955-12-20
19561956-01-091956-12-01
19571957-01-071957-12-31
19641964-01-071964-12-20
19651965-01-111965-12-18
19661966-01-071966-12-31
19711971-01-041971-12-30

Every Fixed Threshold

Fixed thresholds at Umikoa 118
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2660193020
25 mm (0.98 in): Days with 25 mm or more rain263119345
50 mm (1.97 in): Days with 50 mm or more rain261819291
100 mm (3.94 in): Days with 100 mm or more rain23819234
200 mm (7.87 in): Days with 200 mm or more rain17419231

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

Download the Data

  • Data for Umikoa 118 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).