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

Porto Alegre Weather Records (BR047787670)

Record envelope, standing records and threshold days for Porto Alegre (BR047787670), Brazil, with 42 years of record.

Key Facts for Porto Alegre

  • Porto Alegre (BR047787670) is a weather station in Brazil at -13.85 latitude and -40.67 longitude, 220 m (722 ft) above sea level.
  • The station reports from 1942 to 1983, 42 years of record.
  • 0 records set at Porto Alegre still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Porto Alegre set a daily record precipitation of 5.0 mm (0.20 in) on 16 May 1983.

About the Station

  • Location: Brazil, -13.85 latitude, -40.67 longitude.
  • Elevation: 220 m (722 ft).
  • Period of record: 1942 to 1983, 42 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Porto Alegre, with 2026 drawn through them The band shows the record high and record low for each calendar day at Porto Alegre. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Porto Alegre. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Porto Alegre, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Porto Alegre by the year they were set 0 records at Porto Alegre still stand. 00000000000
0 records at Porto Alegre still stand.
Standing records at Porto Alegre by the year they were set
Year setStanding records

Wettest Day of Each Month

Dec: 157.0 mm (6.2 in)
Record daily precipitation for each month at Porto Alegre The wettest day on record for each calendar month at Porto Alegre. The most was 157.0 mm (6.2 in) on 24 December 1972. 050100150200 Jan: 97.4 mm (3.8 in), 12 January 1978 Jan Feb: 99.0 mm (3.9 in), 5 February 1980 Feb Mar: 81.8 mm (3.2 in), 2 March 1968 Mar Apr: 116.5 mm (4.6 in), 22 April 1962 Apr May: 65.8 mm (2.6 in), 6 May 1946 May Jun: 20.2 mm (0.8 in), 28 June 1974 Jun Jul: 11.2 mm (0.4 in), 6 July 1975 Jul Aug: 20.0 mm (0.8 in), 10 August 1954 Aug Sep: 40.0 mm (1.6 in), 27 September 1967 Sep Oct: 133.0 mm (5.2 in), 17 October 1955 Oct Nov: 81.6 mm (3.2 in), 24 November 1971 Nov Dec: 157.0 mm (6.2 in), 24 December 1972 Dec
The wettest day on record for each calendar month at Porto Alegre. The most was 157.0 mm (6.2 in) on 24 December 1972.
Record daily precipitation for each month at Porto Alegre
MonthRecord daily precipitation (mm)Date
Jan97.4 mm (3.8 in)12 January 1978
Feb99.0 mm (3.9 in)5 February 1980
Mar81.8 mm (3.2 in)2 March 1968
Apr116.5 mm (4.6 in)22 April 1962
May65.8 mm (2.6 in)6 May 1946
Jun20.2 mm (0.8 in)28 June 1974
Jul11.2 mm (0.4 in)6 July 1975
Aug20.0 mm (0.8 in)10 August 1954
Sep40.0 mm (1.6 in)27 September 1967
Oct133.0 mm (5.2 in)17 October 1955
Nov81.6 mm (3.2 in)24 November 1971
Dec157.0 mm (6.2 in)24 December 1972

Latest Records

20
Latest records at Porto Alegre
DateStationRecordValueBeat old record byOld record stoodSignificance
16 May 1983Porto Alegre, BRdaily rain5.0 mm (0.20 in)5.0 mm (0.20 in)40 years20 of 100 (Routine)
8 May 1983Porto Alegre, BRdaily rain59.2 mm (2.3 in)59.2 mm (2.3 in)40 years56 of 100 (Notable)
30 March 1983Porto Alegre, BRdaily rain34.4 mm (1.4 in)17.1 mm (0.7 in)36 years24 of 100 (Routine)
28 March 1983Porto Alegre, BRdaily rain42.2 mm (1.7 in)26.1 mm (1.0 in)22 years25 of 100 (Routine)
10 February 1983Porto Alegre, BRdaily rain22.0 mm (0.9 in)7.0 mm (0.28 in)13 years12 of 100 (Routine)
8 February 1983Porto Alegre, BRdaily rain48.6 mm (1.9 in)0.6 mm (0.02 in)15 years8 of 100 (Routine)
1 January 1983Porto Alegre, BRdaily rain60.0 mm (2.4 in)17.4 mm (0.7 in)24 years20 of 100 (Routine)
1 October 1982Porto Alegre, BRdaily rain5.0 mm (0.20 in)5.0 mm (0.20 in)40 years18 of 100 (Routine)
21 September 1982Porto Alegre, BRdaily rain6.5 mm (0.26 in)0.5 mm (0.02 in)4 years5 of 100 (Routine)
28 July 1982Porto Alegre, BRdaily rain1.5 mm (0.06 in)0.3 mm (0.01 in)4 years6 of 100 (Routine)
17 May 1982Porto Alegre, BRdaily rain1.8 mm (0.07 in)0.8 mm (0.03 in)1 year4 of 100 (Routine)
4 May 1982Porto Alegre, BRdaily rain28.2 mm (1.1 in)19.2 mm (0.8 in)28 years30 of 100 (Routine)
13 April 1982Porto Alegre, BRdaily rain0.5 mm (0.02 in)0.5 mm (0.02 in)39 years15 of 100 (Routine)
8 April 1982Porto Alegre, BRdaily rain17.6 mm (0.7 in)3.2 mm (0.13 in)16 years10 of 100 (Routine)
30 December 1981Porto Alegre, BRdaily rain56.0 mm (2.2 in)44.9 mm (1.8 in)18 years33 of 100 (Routine)
4 July 1981Porto Alegre, BRdaily rain3.5 mm (0.14 in)3.5 mm (0.14 in)38 years20 of 100 (Routine)
3 June 1981Porto Alegre, BRdaily rain3.9 mm (0.15 in)1.4 mm (0.06 in)3 years8 of 100 (Routine)
25 May 1981Porto Alegre, BRdaily rain4.9 mm (0.19 in)1.7 mm (0.07 in)30 years14 of 100 (Routine)
24 May 1981Porto Alegre, BRdaily rain4.3 mm (0.17 in)4.3 mm (0.17 in)38 years18 of 100 (Routine)
23 May 1981Porto Alegre, BRdaily rain4.2 mm (0.17 in)4.2 mm (0.17 in)38 years18 of 100 (Routine)

Extremes by Year

1942 to 1983
Yearly extremes at Porto Alegre: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)157.0 mm (6.2 in)197261.2 mm (2.4 in)41
Wettest five days (Rx5day)238.0 mm (9.4 in)1972115.8 mm (4.6 in)41
Longest dry spell (CDD)207 days195883 days41

Wettest day (Rx1day)

Wettest day (Rx1day) at Porto Alegre by year The wettest day of the year at Porto Alegre, 1942 to 1983. The record is 157.0 mm (6.2 in) in 1972, marked on the chart; the median year is 61.2 mm (2.4 in). 0501001502001950196019701980Record: 157.0 mm (6.2 in) in 1972
The wettest day of the year at Porto Alegre, 1942 to 1983. The record is 157.0 mm (6.2 in) in 1972, marked on the chart; the median year is 61.2 mm (2.4 in).
Wettest day (Rx1day) at Porto Alegre by year
YearWettest day (Rx1day)
194277.8 mm (3.1 in)
194363.5 mm (2.5 in)
194491.3 mm (3.6 in)
194564.8 mm (2.6 in)
194665.8 mm (2.6 in)
194752.8 mm (2.1 in)
194859.2 mm (2.3 in)
194930.1 mm (1.2 in)
195128.0 mm (1.1 in)
195232.4 mm (1.3 in)
195348.6 mm (1.9 in)
195464.2 mm (2.5 in)
1955133.0 mm (5.2 in)
195698.7 mm (3.9 in)
195770.4 mm (2.8 in)
195852.5 mm (2.1 in)
195958.4 mm (2.3 in)
196053.4 mm (2.1 in)
196141.3 mm (1.6 in)
1962116.5 mm (4.6 in)
196382.7 mm (3.3 in)
196461.2 mm (2.4 in)
196555.0 mm (2.2 in)
196676.1 mm (3.0 in)
196779.0 mm (3.1 in)
196881.8 mm (3.2 in)
196970.0 mm (2.8 in)
197057.5 mm (2.3 in)
197181.6 mm (3.2 in)
1972157.0 mm (6.2 in)
197351.8 mm (2.0 in)
197450.6 mm (2.0 in)
197561.2 mm (2.4 in)
197680.0 mm (3.1 in)
197733.8 mm (1.3 in)
197897.4 mm (3.8 in)
197943.2 mm (1.7 in)
198099.0 mm (3.9 in)
198156.0 mm (2.2 in)
198255.6 mm (2.2 in)
198360.0 mm (2.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Porto Alegre by year The wettest five days of the year at Porto Alegre, 1942 to 1983. The record is 238.0 mm (9.4 in) in 1972, marked on the chart; the median year is 115.8 mm (4.6 in). 01002003001950196019701980Record: 238.0 mm (9.4 in) in 1972
The wettest five days of the year at Porto Alegre, 1942 to 1983. The record is 238.0 mm (9.4 in) in 1972, marked on the chart; the median year is 115.8 mm (4.6 in).
Wettest five days (Rx5day) at Porto Alegre by year
YearWettest five days (Rx5day)
1942108.9 mm (4.3 in)
194396.5 mm (3.8 in)
1944159.3 mm (6.3 in)
194572.7 mm (2.9 in)
194693.4 mm (3.7 in)
1947122.6 mm (4.8 in)
1948166.4 mm (6.6 in)
194965.9 mm (2.6 in)
195146.3 mm (1.8 in)
195233.1 mm (1.3 in)
1953121.9 mm (4.8 in)
195465.6 mm (2.6 in)
1955161.7 mm (6.4 in)
1956151.3 mm (6.0 in)
1957127.0 mm (5.0 in)
195883.5 mm (3.3 in)
1959139.9 mm (5.5 in)
1960121.1 mm (4.8 in)
196157.8 mm (2.3 in)
1962116.5 mm (4.6 in)
1963146.5 mm (5.8 in)
1964111.8 mm (4.4 in)
1965109.0 mm (4.3 in)
1966115.7 mm (4.6 in)
1967145.2 mm (5.7 in)
1968134.2 mm (5.3 in)
1969107.4 mm (4.2 in)
1970126.7 mm (5.0 in)
197192.4 mm (3.6 in)
1972238.0 mm (9.4 in)
197389.6 mm (3.5 in)
197450.6 mm (2.0 in)
1975150.4 mm (5.9 in)
1976121.1 mm (4.8 in)
197770.1 mm (2.8 in)
1978134.9 mm (5.3 in)
1979118.7 mm (4.7 in)
1980200.2 mm (7.9 in)
198188.8 mm (3.5 in)
198296.6 mm (3.8 in)
1983115.8 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Porto Alegre by year The longest dry spell of the year at Porto Alegre, 1942 to 1983. The record is 207 days in 1958, marked on the chart; the median year is 83 days. 0501001502002501950196019701980Record: 207 days in 1958
The longest dry spell of the year at Porto Alegre, 1942 to 1983. The record is 207 days in 1958, marked on the chart; the median year is 83 days.
Longest dry spell (CDD) at Porto Alegre by year
YearLongest dry spell (CDD)
194224 days
194366 days
194474 days
194547 days
194678 days
1947110 days
194867 days
194965 days
1951135 days
1952141 days
195392 days
195487 days
195567 days
1956166 days
1957111 days
1958207 days
1959175 days
1960114 days
1961125 days
196283 days
196380 days
196479 days
196570 days
196654 days
196794 days
1968118 days
196984 days
197063 days
197156 days
197298 days
197369 days
197466 days
197589 days
1976140 days
197755 days
197858 days
1979138 days
198033 days
1981100 days
198269 days
1983106 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

38 years, 1943 to 1983

A day with at least 63.5 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 160.7 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Porto Alegre: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years63.5 mm (2.5 in)
5 years87.4 mm (3.4 in)
10 years104.0 mm (4.1 in)
25 years126.0 mm (5.0 in)
50 years143.1 mm (5.6 in)Longer than the 38 years of record
100 years160.7 mm (6.3 in)Longer than the 38 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 38 years of values from 1943 to 1983.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 157.0 mm (6.2 in) in 1972; 133.0 mm (5.2 in) in 1955; 116.5 mm (4.6 in) in 1962.

Download the Data

  • Data for Porto Alegre standing records by year: CSV or JSON. Field meanings are on the data page.
  • 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). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).