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Built 2026-10-19 (19 October 2026)

Sume (Sao Tome) Threshold Days by Year (BR038563140)

4 fixed thresholds counted per year at Sume (Sao Tome) (BR038563140): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sume (Sao Tome) Thresholds

  • Sume (Sao Tome): days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1974 with 34.
  • Sume (Sao Tome): days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1965 with 14.
  • Sume (Sao Tome): days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 1974 with 7.
  • Sume (Sao Tome): days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1944 with 1.
  • 4 fixed thresholds have at least one qualifying day at Sume (Sao Tome).
40 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Sume (Sao Tome) Days per year at Sume (Sao Tome) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1974. 0102030401931: 231934: 181935: 91936: 101937: 21938: 21939: 111940: 251941: 71942: 61943: 41944: 121945: 171946: 151947: 251949: 151950: 131951: 81952: 121953: 71954: 131955: 141956: 131957: 181958: 91959: 141961: 221962: 81963: 181964: 241965: 251966: 171967: 241968: 281969: 171970: 151971: 191972: 51973: 161974: 341931193719411945195019541958196319671971
Days per year at Sume (Sao Tome) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Sume (Sao Tome)
YearDaysDecade average
19312310.7
19341810.7
1935910.7
19361010.7
1937210.7
1938210.7
19391110.7
19402514
1941714
1942614
1943414
19441214
19451714
19461514
19472514
19491514
19501312.1
1951812.1
19521212.1
1953712.1
19541312.1
19551412.1
19561312.1
19571812.1
1958912.1
19591412.1
19612220.3
1962820.3
19631820.3
19642420.3
19652520.3
19661720.3
19672420.3
19682820.3
19691720.3
19701517.8
19711917.8
1972517.8
19731617.8
19743417.8
First to last qualifying date each year at Sume (Sao Tome) For each year, a bar from the first to the last day at Sume (Sao Tome) meeting 10 mm (0.39 in). 1931: 22 February 1931 to 30 June 19311934: 13 February 1934 to 26 December 19341935: 4 January 1935 to 15 June 19351936: 1 January 1936 to 26 June 19361937: 5 May 1937 to 13 June 19371938: 11 April 1938 to 16 December 19381939: 16 March 1939 to 9 December 19391940: 5 January 1940 to 21 June 19401941: 13 February 1941 to 6 November 19411942: 9 March 1942 to 12 August 19421943: 31 January 1943 to 17 May 19431944: 20 January 1944 to 7 September 19441945: 7 February 1945 to 3 December 19451946: 27 January 1946 to 21 December 19461947: 20 January 1947 to 21 December 19471949: 2 February 1949 to 27 November 19491950: 3 March 1950 to 5 October 19501951: 6 February 1951 to 25 May 19511952: 1 March 1952 to 16 December 19521953: 16 February 1953 to 17 December 19531954: 31 January 1954 to 27 November 19541955: 19 January 1955 to 3 May 19551956: 3 February 1956 to 27 June 19561957: 11 January 1957 to 27 May 19571958: 27 March 1958 to 26 December 19581959: 10 January 1959 to 24 June 19591961: 21 January 1961 to 24 September 19611962: 21 January 1962 to 5 November 19621963: 20 January 1963 to 27 December 19631964: 4 January 1964 to 23 December 19641965: 18 January 1965 to 28 December 19651966: 30 January 1966 to 26 November 19661967: 3 February 1967 to 29 December 19671968: 19 January 1968 to 22 December 19681969: 23 January 1969 to 25 July 19691970: 19 January 1970 to 7 October 19701971: 16 February 1971 to 25 July 19711972: 17 February 1972 to 21 December 19721973: 4 January 1973 to 2 October 19731974: 20 January 1974 to 6 December 197419311938194319491954195919651970JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sume (Sao Tome) meeting 10 mm (0.39 in).
First to last qualifying date each year at Sume (Sao Tome)
YearFirst dateLast date
19311931-02-221931-06-30
19341934-02-131934-12-26
19351935-01-041935-06-15
19361936-01-011936-06-26
19371937-05-051937-06-13
19381938-04-111938-12-16
19391939-03-161939-12-09
19401940-01-051940-06-21
19411941-02-131941-11-06
19421942-03-091942-08-12
19431943-01-311943-05-17
19441944-01-201944-09-07
19451945-02-071945-12-03
19461946-01-271946-12-21
19471947-01-201947-12-21
19491949-02-021949-11-27
19501950-03-031950-10-05
19511951-02-061951-05-25
19521952-03-011952-12-16
19531953-02-161953-12-17
19541954-01-311954-11-27
19551955-01-191955-05-03
19561956-02-031956-06-27
19571957-01-111957-05-27
19581958-03-271958-12-26
19591959-01-101959-06-24
19611961-01-211961-09-24
19621962-01-211962-11-05
19631963-01-201963-12-27
19641964-01-041964-12-23
19651965-01-181965-12-28
19661966-01-301966-11-26
19671967-02-031967-12-29
19681968-01-191968-12-22
19691969-01-231969-07-25
19701970-01-191970-10-07
19711971-02-161971-07-25
19721972-02-171972-12-21
19731973-01-041973-10-02
19741974-01-201974-12-06

Every Fixed Threshold

Fixed thresholds at Sume (Sao Tome)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4034197434
25 mm (0.98 in): Days with 25 mm or more rain3914196513
50 mm (1.97 in): Days with 50 mm or more rain30719747
100 mm (3.94 in): Days with 100 mm or more rain6119441

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.

Download the Data

  • Data for Sume (Sao Tome) 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).