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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Ipiau Threshold Days by Year (BR001439014)

4 fixed thresholds counted per year at Ipiau (BR001439014): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ipiau Thresholds

  • Ipiau: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1989 with 49.
  • Ipiau: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1985 with 19.
  • Ipiau: days with 50 mm (1.97 in) or more of precipitation in 40 years, most in 1964 with 6.
  • Ipiau: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1980 with 3.
  • 4 fixed thresholds have at least one qualifying day at Ipiau.
50 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Ipiau Days per year at Ipiau with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1989. 02040601944: 271945: 381946: 201947: 371948: 441949: 291950: 431951: 261952: 391953: 421954: 321955: 251956: 431957: 301958: 421959: 281960: 361961: 171962: 171963: 191964: 371965: 301966: 231967: 221968: 321969: 331970: 401973: 301976: 311977: 431978: 371979: 131980: 441981: 391982: 241983: 331984: 231985: 471986: 181987: 221988: 341989: 491990: 241991: 241992: 391994: 281995: 241996: 141997: 321998: 251944194919541959196419691978198319881994
Days per year at Ipiau with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1989.
Days with 10 mm (0.39 in) or more of precipitation per year at Ipiau
YearDaysDecade average
19442732.5
19453832.5
19462032.5
19473732.5
19484432.5
19492932.5
19504335
19512635
19523935
19534235
19543235
19552535
19564335
19573035
19584235
19592835
19603626.6
19611726.6
19621726.6
19631926.6
19643726.6
19653026.6
19662326.6
19672226.6
19683226.6
19693326.6
19704032.3
19733032.3
19763132.3
19774332.3
19783732.3
19791332.3
19804433.3
19813933.3
19822433.3
19833333.3
19842333.3
19854733.3
19861833.3
19872233.3
19883433.3
19894933.3
19902426.3
19912426.3
19923926.3
19942826.3
19952426.3
19961426.3
19973226.3
19982526.3
First to last qualifying date each year at Ipiau For each year, a bar from the first to the last day at Ipiau meeting 10 mm (0.39 in). 1944: 29 February 1944 to 31 December 19441945: 9 January 1945 to 25 December 19451946: 4 January 1946 to 23 December 19461947: 6 January 1947 to 6 December 19471948: 8 January 1948 to 29 December 19481949: 7 February 1949 to 21 December 19491950: 25 February 1950 to 31 December 19501951: 1 January 1951 to 20 December 19511952: 29 February 1952 to 30 December 19521953: 19 January 1953 to 18 December 19531954: 26 January 1954 to 11 December 19541955: 5 January 1955 to 29 December 19551956: 13 January 1956 to 31 December 19561957: 6 January 1957 to 24 December 19571958: 12 January 1958 to 28 December 19581959: 1 January 1959 to 27 December 19591960: 2 January 1960 to 18 December 19601961: 13 January 1961 to 16 July 19611962: 17 January 1962 to 13 December 19621963: 4 January 1963 to 23 December 19631964: 1 January 1964 to 5 December 19641965: 8 February 1965 to 24 November 19651966: 15 January 1966 to 20 December 19661967: 2 January 1967 to 29 December 19671968: 8 January 1968 to 20 December 19681969: 19 January 1969 to 29 December 19691970: 18 January 1970 to 11 December 19701973: 15 February 1973 to 20 December 19731976: 2 January 1976 to 30 November 19761977: 7 January 1977 to 30 December 19771978: 1 January 1978 to 19 December 19781979: 9 January 1979 to 2 August 19791980: 4 January 1980 to 23 December 19801981: 7 January 1981 to 31 December 19811982: 1 January 1982 to 3 November 19821983: 1 January 1983 to 31 December 19831984: 2 January 1984 to 3 November 19841985: 1 January 1985 to 31 December 19851986: 8 January 1986 to 28 December 19861987: 8 January 1987 to 29 December 19871988: 2 January 1988 to 12 December 19881989: 11 January 1989 to 31 December 19891990: 3 January 1990 to 7 December 19901991: 7 January 1991 to 23 November 19911992: 11 January 1992 to 15 December 19921994: 6 January 1994 to 29 November 19941995: 6 February 1995 to 15 December 19951996: 14 February 1996 to 26 December 19961997: 25 January 1997 to 14 December 19971998: 21 January 1998 to 23 December 199819441951195819651976198319901998JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ipiau meeting 10 mm (0.39 in).
First to last qualifying date each year at Ipiau
YearFirst dateLast date
19441944-02-291944-12-31
19451945-01-091945-12-25
19461946-01-041946-12-23
19471947-01-061947-12-06
19481948-01-081948-12-29
19491949-02-071949-12-21
19501950-02-251950-12-31
19511951-01-011951-12-20
19521952-02-291952-12-30
19531953-01-191953-12-18
19541954-01-261954-12-11
19551955-01-051955-12-29
19561956-01-131956-12-31
19571957-01-061957-12-24
19581958-01-121958-12-28
19591959-01-011959-12-27
19601960-01-021960-12-18
19611961-01-131961-07-16
19621962-01-171962-12-13
19631963-01-041963-12-23
19641964-01-011964-12-05
19651965-02-081965-11-24
19661966-01-151966-12-20
19671967-01-021967-12-29
19681968-01-081968-12-20
19691969-01-191969-12-29
19701970-01-181970-12-11
19731973-02-151973-12-20
19761976-01-021976-11-30
19771977-01-071977-12-30
19781978-01-011978-12-19
19791979-01-091979-08-02
19801980-01-041980-12-23
19811981-01-071981-12-31
19821982-01-011982-11-03
19831983-01-011983-12-31
19841984-01-021984-11-03
19851985-01-011985-12-31
19861986-01-081986-12-28
19871987-01-081987-12-29
19881988-01-021988-12-12
19891989-01-111989-12-31
19901990-01-031990-12-07
19911991-01-071991-11-23
19921992-01-111992-12-15
19941994-01-061994-11-29
19951995-02-061995-12-15
19961996-02-141996-12-26
19971997-01-251997-12-14
19981998-01-211998-12-23

Every Fixed Threshold

Fixed thresholds at Ipiau
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5049198925
25 mm (0.98 in): Days with 25 mm or more rain501919858
50 mm (1.97 in): Days with 50 mm or more rain40619641
100 mm (3.94 in): Days with 100 mm or more rain5319801

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1944.

Download the Data

  • Data for Ipiau 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).