Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Porto Alegre Threshold Days by Year (BR001756003)

4 fixed thresholds counted per year at Porto Alegre (BR001756003): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Porto Alegre Thresholds

  • Porto Alegre: days with 10 mm (0.39 in) or more of precipitation in 11 years, most in 1982 with 44.
  • Porto Alegre: days with 25 mm (0.98 in) or more of precipitation in 11 years, most in 1991 with 29.
  • Porto Alegre: days with 50 mm (1.97 in) or more of precipitation in 11 years, most in 1991 with 13.
  • Porto Alegre: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1993 with 2.
  • 4 fixed thresholds have at least one qualifying day at Porto Alegre.
11 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Porto Alegre Days per year at Porto Alegre with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1982. 02040601976: 351977: 341982: 441991: 381992: 421993: 211995: 411996: 341997: 411998: 371999: 37197619821992199519971999
Days per year at Porto Alegre with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1982.
Days with 10 mm (0.39 in) or more of precipitation per year at Porto Alegre
YearDaysDecade average
19763534.5
19773434.5
19824444
19913836.4
19924236.4
19932136.4
19954136.4
19963436.4
19974136.4
19983736.4
19993736.4
First to last qualifying date each year at Porto Alegre For each year, a bar from the first to the last day at Porto Alegre meeting 10 mm (0.39 in). 1976: 9 January 1976 to 24 December 19761977: 1 February 1977 to 27 December 19771982: 2 January 1982 to 24 December 19821991: 4 January 1991 to 27 December 19911992: 5 January 1992 to 31 December 19921993: 1 January 1993 to 22 November 19931995: 1 January 1995 to 12 December 19951996: 1 January 1996 to 30 December 19961997: 1 January 1997 to 15 December 19971998: 7 January 1998 to 31 December 19981999: 1 January 1999 to 26 December 1999197619821992199519971999JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Porto Alegre meeting 10 mm (0.39 in).
First to last qualifying date each year at Porto Alegre
YearFirst dateLast date
19761976-01-091976-12-24
19771977-02-011977-12-27
19821982-01-021982-12-24
19911991-01-041991-12-27
19921992-01-051992-12-31
19931993-01-011993-11-22
19951995-01-011995-12-12
19961996-01-011996-12-30
19971997-01-011997-12-15
19981998-01-071998-12-31
19991999-01-011999-12-26

Every Fixed Threshold

Fixed thresholds at Porto Alegre
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1144198237
25 mm (0.98 in): Days with 25 mm or more rain1129199117
50 mm (1.97 in): Days with 50 mm or more rain111319915
100 mm (3.94 in): Days with 100 mm or more rain4219931

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1976.

Download the Data

  • Data for Porto Alegre 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).