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Built 2026-10-19 (19 October 2026)

Tres Islas Threshold Days by Year (UY000001792)

4 fixed thresholds counted per year at Tres Islas (UY000001792): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tres Islas Thresholds

  • Tres Islas: days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 1987 with 45.
  • Tres Islas: days with 25 mm (0.98 in) or more of precipitation in 22 years, most in 1997 with 23.
  • Tres Islas: days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 1997 with 11.
  • Tres Islas: days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1998 with 3.
  • 4 fixed thresholds have at least one qualifying day at Tres Islas.
22 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Tres Islas Days per year at Tres Islas with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1987. 02040601964: 211973: 251975: 211976: 201977: 271978: 221979: 191980: 401982: 371983: 201984: 181985: 431986: 381987: 451988: 271992: 441993: 341994: 391995: 391996: 361997: 441998: 3819641976197919831986199219951998
Days per year at Tres Islas with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1987.
Days with 10 mm (0.39 in) or more of precipitation per year at Tres Islas
YearDaysDecade average
19642121
19732522.3
19752122.3
19762022.3
19772722.3
19782222.3
19791922.3
19804033.5
19823733.5
19832033.5
19841833.5
19854333.5
19863833.5
19874533.5
19882733.5
19924439.1
19933439.1
19943939.1
19953939.1
19963639.1
19974439.1
19983839.1
First to last qualifying date each year at Tres Islas For each year, a bar from the first to the last day at Tres Islas meeting 10 mm (0.39 in). 1964: 27 January 1964 to 25 December 19641973: 7 January 1973 to 4 December 19731975: 16 January 1975 to 21 November 19751976: 25 January 1976 to 7 December 19761977: 3 January 1977 to 27 November 19771978: 14 January 1978 to 14 December 19781979: 11 February 1979 to 30 December 19791980: 6 January 1980 to 19 December 19801982: 10 January 1982 to 15 December 19821983: 15 January 1983 to 13 December 19831984: 8 January 1984 to 1 December 19841985: 6 January 1985 to 13 December 19851986: 17 January 1986 to 28 November 19861987: 24 January 1987 to 31 December 19871988: 1 January 1988 to 28 December 19881992: 2 January 1992 to 31 December 19921993: 1 January 1993 to 28 December 19931994: 8 January 1994 to 14 December 19941995: 17 January 1995 to 23 November 19951996: 5 January 1996 to 19 December 19961997: 19 January 1997 to 30 December 19971998: 1 January 1998 to 29 December 199819641976197919831986199219951998JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Tres Islas meeting 10 mm (0.39 in).
First to last qualifying date each year at Tres Islas
YearFirst dateLast date
19641964-01-271964-12-25
19731973-01-071973-12-04
19751975-01-161975-11-21
19761976-01-251976-12-07
19771977-01-031977-11-27
19781978-01-141978-12-14
19791979-02-111979-12-30
19801980-01-061980-12-19
19821982-01-101982-12-15
19831983-01-151983-12-13
19841984-01-081984-12-01
19851985-01-061985-12-13
19861986-01-171986-11-28
19871987-01-241987-12-31
19881988-01-011988-12-28
19921992-01-021992-12-31
19931993-01-011993-12-28
19941994-01-081994-12-14
19951995-01-171995-11-23
19961996-01-051996-12-19
19971997-01-191997-12-30
19981998-01-011998-12-29

Every Fixed Threshold

Fixed thresholds at Tres Islas
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2245198738
25 mm (0.98 in): Days with 25 mm or more rain2223199719
50 mm (1.97 in): Days with 50 mm or more rain221119979
100 mm (3.94 in): Days with 100 mm or more rain6319983

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

  • Data for Tres Islas 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).