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

Piau Weather Records (BR002143022)

Record envelope, standing records and threshold days for Piau (BR002143022), Brazil, with 39 years of record.

Key Facts for Piau

  • Piau (BR002143022) is a weather station in Brazil at -21.50 latitude and -43.15 longitude, 472 m (1,549 ft) above sea level.
  • The station reports from 1957 to 1995, 39 years of record.
  • 0 records set at Piau still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Piau set a daily record precipitation of 13.8 mm (0.5 in) on 11 May 1995.

About the Station

  • Location: Brazil, -21.50 latitude, -43.15 longitude.
  • Elevation: 472 m (1,549 ft).
  • Period of record: 1957 to 1995, 39 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Piau, with 2026 drawn through them The band shows the record high and record low for each calendar day at Piau. 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 Piau. 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 Piau, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Decn/an/an/an/a

Which Years Hold Standing Records

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

Wettest Day of Each Month

Jan: 150.0 mm (5.9 in)
Record daily precipitation for each month at Piau The wettest day on record for each calendar month at Piau. The most was 150.0 mm (5.9 in) on 22 January 1969. 050100150 Jan: 150.0 mm (5.9 in), 22 January 1969 Jan Feb: 96.0 mm (3.8 in), 28 February 1968 Feb Mar: 105.0 mm (4.1 in), 1 March 1969 Mar Apr: 96.0 mm (3.8 in), 19 April 1958 Apr May: 60.2 mm (2.4 in), 24 May 1972 May Jun: 38.4 mm (1.5 in), 4 June 1983 Jun Jul: 31.2 mm (1.2 in), 22 July 1976 Jul Aug: 45.0 mm (1.8 in), 31 August 1958 Aug Sep: 75.0 mm (3.0 in), 7 September 1992 Sep Oct: 91.0 mm (3.6 in), 31 October 1992 Oct Nov: 98.0 mm (3.9 in), 8 November 1962 Nov Dec: 100.0 mm (3.9 in), 8 December 1957 Dec
The wettest day on record for each calendar month at Piau. The most was 150.0 mm (5.9 in) on 22 January 1969.
Record daily precipitation for each month at Piau
MonthRecord daily precipitation (mm)Date
Jan150.0 mm (5.9 in)22 January 1969
Feb96.0 mm (3.8 in)28 February 1968
Mar105.0 mm (4.1 in)1 March 1969
Apr96.0 mm (3.8 in)19 April 1958
May60.2 mm (2.4 in)24 May 1972
Jun38.4 mm (1.5 in)4 June 1983
Jul31.2 mm (1.2 in)22 July 1976
Aug45.0 mm (1.8 in)31 August 1958
Sep75.0 mm (3.0 in)7 September 1992
Oct91.0 mm (3.6 in)31 October 1992
Nov98.0 mm (3.9 in)8 November 1962
Dec100.0 mm (3.9 in)8 December 1957

Latest Records

20
Latest records at Piau
DateStationRecordValueBeat old record byOld record stoodSignificance
11 May 1995Piau, BRdaily rain13.8 mm (0.5 in)0.6 mm (0.02 in)21 years9 of 100 (Routine)
24 April 1995Piau, BRdaily rain29.0 mm (1.1 in)18.6 mm (0.7 in)24 years24 of 100 (Routine)
22 April 1995Piau, BRdaily rain28.0 mm (1.1 in)11.8 mm (0.5 in)29 years20 of 100 (Routine)
12 February 1995Piau, BRdaily rain61.4 mm (2.4 in)0.2 mm (0.01 in)7 years5 of 100 (Routine)
31 January 1995Piau, BRdaily rain37.8 mm (1.5 in)8.8 mm (0.35 in)20 years13 of 100 (Routine)
21 October 1994Piau, BRdaily rain57.0 mm (2.2 in)21.0 mm (0.8 in)4 years21 of 100 (Routine)
7 October 1994Piau, BRdaily rain30.2 mm (1.2 in)6.2 mm (0.24 in)29 years16 of 100 (Routine)
28 May 1994Piau, BRdaily rain (Tie)2.0 mm (0.08 in)tie36 years3 of 100 (Routine)
17 May 1994Piau, BRdaily rain33.6 mm (1.3 in)15.8 mm (0.6 in)33 years27 of 100 (Routine)
16 May 1994Piau, BRdaily rain36.4 mm (1.4 in)30.4 mm (1.2 in)29 years39 of 100 (Notable)
15 May 1994Piau, BRdaily rain12.8 mm (0.5 in)8.6 mm (0.34 in)1 year10 of 100 (Routine)
16 April 1994Piau, BRdaily rain19.8 mm (0.8 in)1.8 mm (0.07 in)8 years6 of 100 (Routine)
27 March 1994Piau, BRdaily rain28.0 mm (1.1 in)7.2 mm (0.28 in)8 years9 of 100 (Routine)
2 March 1994Piau, BRdaily rain43.0 mm (1.7 in)0.8 mm (0.03 in)8 years5 of 100 (Routine)
12 September 1993Piau, BRdaily rain19.4 mm (0.8 in)6.0 mm (0.24 in)26 years14 of 100 (Routine)
11 September 1993Piau, BRdaily rain17.6 mm (0.7 in)12.0 mm (0.5 in)23 years18 of 100 (Routine)
20 August 1993Piau, BRdaily rain8.6 mm (0.34 in)3.8 mm (0.15 in)3 years7 of 100 (Routine)
25 April 1993Piau, BRdaily rain32.6 mm (1.3 in)21.6 mm (0.9 in)0 years19 of 100 (Routine)
17 March 1993Piau, BRdaily rain34.2 mm (1.3 in)7.2 mm (0.28 in)8 years9 of 100 (Routine)
12 March 1993Piau, BRdaily rain59.0 mm (2.3 in)5.0 mm (0.20 in)16 years10 of 100 (Routine)

Extremes by Year

1957 to 1995
Yearly extremes at Piau: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)150.0 mm (5.9 in)196978.0 mm (3.1 in)35
Wettest five days (Rx5day)276.0 mm (10.9 in)1991174.4 mm (6.9 in)35
Longest dry spell (CDD)121 days196343 days35

Wettest day (Rx1day)

Wettest day (Rx1day) at Piau by year The wettest day of the year at Piau, 1957 to 1995. The record is 150.0 mm (5.9 in) in 1969, marked on the chart; the median year is 78.0 mm (3.1 in). 50751001251501960197019801990Record: 150.0 mm (5.9 in) in 1969
The wettest day of the year at Piau, 1957 to 1995. The record is 150.0 mm (5.9 in) in 1969, marked on the chart; the median year is 78.0 mm (3.1 in).
Wettest day (Rx1day) at Piau by year
YearWettest day (Rx1day)
1957100.0 mm (3.9 in)
195896.0 mm (3.8 in)
195987.0 mm (3.4 in)
196078.0 mm (3.1 in)
196172.0 mm (2.8 in)
196298.0 mm (3.9 in)
196350.0 mm (2.0 in)
1964100.0 mm (3.9 in)
196590.0 mm (3.5 in)
196690.0 mm (3.5 in)
196755.2 mm (2.2 in)
196896.0 mm (3.8 in)
1969150.0 mm (5.9 in)
197054.0 mm (2.1 in)
197172.2 mm (2.8 in)
197263.0 mm (2.5 in)
197366.0 mm (2.6 in)
197467.0 mm (2.6 in)
197578.0 mm (3.1 in)
197681.0 mm (3.2 in)
197762.6 mm (2.5 in)
1982100.0 mm (3.9 in)
198385.0 mm (3.3 in)
198471.0 mm (2.8 in)
198586.0 mm (3.4 in)
198671.0 mm (2.8 in)
198792.2 mm (3.6 in)
198867.4 mm (2.7 in)
198972.2 mm (2.8 in)
199066.2 mm (2.6 in)
1991125.0 mm (4.9 in)
199291.0 mm (3.6 in)
199362.0 mm (2.4 in)
199457.0 mm (2.2 in)
199561.4 mm (2.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Piau by year The wettest five days of the year at Piau, 1957 to 1995. The record is 276.0 mm (10.9 in) in 1991, marked on the chart; the median year is 174.4 mm (6.9 in). 501001502002503001960197019801990Record: 276.0 mm (10.9 in) in 1991
The wettest five days of the year at Piau, 1957 to 1995. The record is 276.0 mm (10.9 in) in 1991, marked on the chart; the median year is 174.4 mm (6.9 in).
Wettest five days (Rx5day) at Piau by year
YearWettest five days (Rx5day)
1957179.6 mm (7.1 in)
1958157.0 mm (6.2 in)
1959154.6 mm (6.1 in)
1960156.2 mm (6.1 in)
1961200.2 mm (7.9 in)
1962230.2 mm (9.1 in)
1963146.0 mm (5.7 in)
1964222.0 mm (8.7 in)
1965161.0 mm (6.3 in)
1966263.0 mm (10.4 in)
1967159.2 mm (6.3 in)
1968216.2 mm (8.5 in)
1969241.2 mm (9.5 in)
197082.4 mm (3.2 in)
1971183.6 mm (7.2 in)
1972191.0 mm (7.5 in)
1973146.4 mm (5.8 in)
1974225.0 mm (8.9 in)
1975150.8 mm (5.9 in)
1976184.0 mm (7.2 in)
1977134.6 mm (5.3 in)
1982167.6 mm (6.6 in)
1983154.8 mm (6.1 in)
1984180.4 mm (7.1 in)
1985229.4 mm (9.0 in)
1986183.4 mm (7.2 in)
1987123.8 mm (4.9 in)
1988179.8 mm (7.1 in)
1989169.6 mm (6.7 in)
1990156.0 mm (6.1 in)
1991276.0 mm (10.9 in)
1992186.2 mm (7.3 in)
1993130.0 mm (5.1 in)
1994140.6 mm (5.5 in)
1995174.4 mm (6.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Piau by year The longest dry spell of the year at Piau, 1957 to 1995. The record is 121 days in 1963, marked on the chart; the median year is 43 days. 0501001501960197019801990Record: 121 days in 1963
The longest dry spell of the year at Piau, 1957 to 1995. The record is 121 days in 1963, marked on the chart; the median year is 43 days.
Longest dry spell (CDD) at Piau by year
YearLongest dry spell (CDD)
195720 days
195824 days
195962 days
196026 days
1961109 days
196246 days
1963121 days
196425 days
196533 days
196638 days
196754 days
196881 days
196926 days
197041 days
197143 days
197246 days
197332 days
197450 days
197569 days
197621 days
197743 days
198221 days
198345 days
198441 days
198577 days
198625 days
198755 days
198842 days
198925 days
199043 days
199146 days
199231 days
199361 days
199474 days
199554 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

34 years, 1958 to 1995

A day with at least 76.1 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 147.6 mm (5.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Piau: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years76.1 mm (3.0 in)
5 years94.3 mm (3.7 in)
10 years106.7 mm (4.2 in)
25 years122.8 mm (4.8 in)
50 years135.1 mm (5.3 in)Longer than the 34 years of record
100 years147.6 mm (5.8 in)Longer than the 34 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, 34 years of values from 1958 to 1995.

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: 150.0 mm (5.9 in) in 1969; 125.0 mm (4.9 in) in 1991; 100.0 mm (3.9 in) in 1964.

Download the Data

  • Data for Piau standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Piau 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).