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Built 2026-10-19 (19 October 2026)

Porto Novo Threshold Days by Year (BR001343008)

4 fixed thresholds counted per year at Porto Novo (BR001343008): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Porto Novo Thresholds

  • Porto Novo: days with 10 mm (0.39 in) or more of precipitation in 58 years, most in 1945 with 50.
  • Porto Novo: days with 25 mm (0.98 in) or more of precipitation in 58 years, most in 1957 with 23.
  • Porto Novo: days with 50 mm (1.97 in) or more of precipitation in 56 years, most in 1941 with 8.
  • Porto Novo: days with 100 mm (3.94 in) or more of precipitation in 9 years, most in 1941 with 2.
  • 4 fixed thresholds have at least one qualifying day at Porto Novo.
58 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Porto Novo Days per year at Porto Novo with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 50 in 1945. 02040601937: 291938: 181939: 161940: 371941: 321942: 391943: 361944: 331945: 501946: 241947: 471948: 401949: 301950: 331951: 261952: 391953: 271954: 201955: 241956: 411957: 381958: 281959: 181960: 351961: 271962: 361963: 241964: 361965: 241966: 201967: 161968: 181969: 391970: 321971: 211972: 271973: 171978: 331979: 411980: 391981: 241982: 241983: 241984: 51986: 121987: 261988: 281989: 371990: 171991: 251992: 411993: 121994: 181995: 301996: 201997: 291998: 271999: 331937194319491955196119671973198319901996
Days per year at Porto Novo with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 50 in 1945.
Days with 10 mm (0.39 in) or more of precipitation per year at Porto Novo
YearDaysDecade average
19372921
19381821
19391621
19403736.8
19413236.8
19423936.8
19433636.8
19443336.8
19455036.8
19462436.8
19474736.8
19484036.8
19493036.8
19503329.4
19512629.4
19523929.4
19532729.4
19542029.4
19552429.4
19564129.4
19573829.4
19582829.4
19591829.4
19603527.5
19612727.5
19623627.5
19632427.5
19643627.5
19652427.5
19662027.5
19671627.5
19681827.5
19693927.5
19703228.5
19712128.5
19722728.5
19731728.5
19783328.5
19794128.5
19803924.3
19812424.3
19822424.3
19832424.3
1984524.3
19861224.3
19872624.3
19882824.3
19893724.3
19901725.2
19912525.2
19924125.2
19931225.2
19941825.2
19953025.2
19962025.2
19972925.2
19982725.2
19993325.2
First to last qualifying date each year at Porto Novo For each year, a bar from the first to the last day at Porto Novo meeting 10 mm (0.39 in). 1937: 6 January 1937 to 27 December 19371938: 8 January 1938 to 19 December 19381939: 24 January 1939 to 30 December 19391940: 4 January 1940 to 25 December 19401941: 3 January 1941 to 30 December 19411942: 3 January 1942 to 30 December 19421943: 1 January 1943 to 25 December 19431944: 20 January 1944 to 27 December 19441945: 1 January 1945 to 29 December 19451946: 23 January 1946 to 31 December 19461947: 3 January 1947 to 28 December 19471948: 12 February 1948 to 31 December 19481949: 16 January 1949 to 18 December 19491950: 4 January 1950 to 30 December 19501951: 9 January 1951 to 22 December 19511952: 1 January 1952 to 24 December 19521953: 27 January 1953 to 23 December 19531954: 2 January 1954 to 28 November 19541955: 6 February 1955 to 31 December 19551956: 6 January 1956 to 31 December 19561957: 2 January 1957 to 25 December 19571958: 11 January 1958 to 31 December 19581959: 1 January 1959 to 30 December 19591960: 2 January 1960 to 22 December 19601961: 2 January 1961 to 31 December 19611962: 12 January 1962 to 26 December 19621963: 5 January 1963 to 28 December 19631964: 1 January 1964 to 19 December 19641965: 5 January 1965 to 17 December 19651966: 2 January 1966 to 29 December 19661967: 17 January 1967 to 29 December 19671968: 8 February 1968 to 11 December 19681969: 22 January 1969 to 28 December 19691970: 2 January 1970 to 20 December 19701971: 17 January 1971 to 23 December 19711972: 18 January 1972 to 27 December 19721973: 17 January 1973 to 28 December 19731978: 6 January 1978 to 21 December 19781979: 8 January 1979 to 30 December 19791980: 2 January 1980 to 18 December 19801981: 1 January 1981 to 31 December 19811982: 9 January 1982 to 31 December 19821983: 1 January 1983 to 6 December 19831984: 8 January 1984 to 29 February 19841986: 25 August 1986 to 28 December 19861987: 1 January 1987 to 23 December 19871988: 2 January 1988 to 19 December 19881989: 8 January 1989 to 28 December 19891990: 16 February 1990 to 29 December 19901991: 8 January 1991 to 21 December 19911992: 10 January 1992 to 29 December 19921993: 21 January 1993 to 20 December 19931994: 5 January 1994 to 26 December 19941995: 5 January 1995 to 31 December 19951996: 1 January 1996 to 26 December 19961997: 1 January 1997 to 15 December 19971998: 7 January 1998 to 19 December 19981999: 4 January 1999 to 31 December 199919371945195319611969198119901998JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Porto Novo meeting 10 mm (0.39 in).
First to last qualifying date each year at Porto Novo
YearFirst dateLast date
19371937-01-061937-12-27
19381938-01-081938-12-19
19391939-01-241939-12-30
19401940-01-041940-12-25
19411941-01-031941-12-30
19421942-01-031942-12-30
19431943-01-011943-12-25
19441944-01-201944-12-27
19451945-01-011945-12-29
19461946-01-231946-12-31
19471947-01-031947-12-28
19481948-02-121948-12-31
19491949-01-161949-12-18
19501950-01-041950-12-30
19511951-01-091951-12-22
19521952-01-011952-12-24
19531953-01-271953-12-23
19541954-01-021954-11-28
19551955-02-061955-12-31
19561956-01-061956-12-31
19571957-01-021957-12-25
19581958-01-111958-12-31
19591959-01-011959-12-30
19601960-01-021960-12-22
19611961-01-021961-12-31
19621962-01-121962-12-26
19631963-01-051963-12-28
19641964-01-011964-12-19
19651965-01-051965-12-17
19661966-01-021966-12-29
19671967-01-171967-12-29
19681968-02-081968-12-11
19691969-01-221969-12-28
19701970-01-021970-12-20
19711971-01-171971-12-23
19721972-01-181972-12-27
19731973-01-171973-12-28
19781978-01-061978-12-21
19791979-01-081979-12-30
19801980-01-021980-12-18
19811981-01-011981-12-31
19821982-01-091982-12-31
19831983-01-011983-12-06
19841984-01-081984-02-29
19861986-08-251986-12-28
19871987-01-011987-12-23
19881988-01-021988-12-19
19891989-01-081989-12-28
19901990-02-161990-12-29
19911991-01-081991-12-21
19921992-01-101992-12-29
19931993-01-211993-12-20
19941994-01-051994-12-26
19951995-01-051995-12-31
19961996-01-011996-12-26
19971997-01-011997-12-15
19981998-01-071998-12-19
19991999-01-041999-12-31

Every Fixed Threshold

Fixed thresholds at Porto Novo
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5850194533
25 mm (0.98 in): Days with 25 mm or more rain5823195716
50 mm (1.97 in): Days with 50 mm or more rain56819411
100 mm (3.94 in): Days with 100 mm or more rain9219412

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.

Download the Data

  • Data for Porto Novo 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).