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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Ia?U Weather Records (BR001240016)

Record envelope, standing records and threshold days for Ia?U (BR001240016), Brazil, with 56 years of record.

Key Facts for Ia?U

  • Ia?U (BR001240016) is a weather station in Brazil at -12.76 latitude and -40.21 longitude, 237 m (778 ft) above sea level.
  • The station reports from 1944 to 1999, 56 years of record.
  • 0 records set at Ia?U still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Ia?U set a daily record precipitation of 43.0 mm (1.7 in) on 20 March 1999.

About the Station

  • Location: Brazil, -12.76 latitude, -40.21 longitude.
  • Elevation: 237 m (778 ft).
  • Period of record: 1944 to 1999, 56 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Ia?U, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ia?U. 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 Ia?U. 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 Ia?U, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
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Juln/an/an/an/a
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Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

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

All-Time Record Progression

2 new records
When Ia?U set new all-time records 2 all-time records were set at Ia?U between 27 January 1992 and 28 January 1992. Each dot is a new record. Record daily precipitation27 January 1992: Record daily precipitation 140.5 mm (5.5 in)28 January 1992: Record daily precipitation 142.5 mm (5.6 in)
2 all-time records were set at Ia?U between 27 January 1992 and 28 January 1992. Each dot is a new record.
When Ia?U set new all-time records
DateKindDetail
1992-01-27Record daily precipitationRecord daily precipitation 140.5 mm (5.5 in)
1992-01-28Record daily precipitationRecord daily precipitation 142.5 mm (5.6 in)

Wettest Day of Each Month

Jan: 142.5 mm (5.6 in)
Record daily precipitation for each month at Ia?U The wettest day on record for each calendar month at Ia?U. The most was 142.5 mm (5.6 in) on 28 January 1992. 050100150 Jan: 142.5 mm (5.6 in), 28 January 1992 Jan Feb: 81.6 mm (3.2 in), 12 February 1978 Feb Mar: 111.0 mm (4.4 in), 9 March 1960 Mar Apr: 74.2 mm (2.9 in), 28 April 1964 Apr May: 106.5 mm (4.2 in), 3 May 1978 May Jun: 30.8 mm (1.2 in), 2 June 1998 Jun Jul: 22.0 mm (0.9 in), 27 July 1969 Jul Aug: 30.2 mm (1.2 in), 24 August 1986 Aug Sep: 58.4 mm (2.3 in), 30 September 1976 Sep Oct: 61.0 mm (2.4 in), 14 October 1968 Oct Nov: 137.0 mm (5.4 in), 29 November 1947 Nov Dec: 130.5 mm (5.1 in), 28 December 1944 Dec
The wettest day on record for each calendar month at Ia?U. The most was 142.5 mm (5.6 in) on 28 January 1992.
Record daily precipitation for each month at Ia?U
MonthRecord daily precipitation (mm)Date
Jan142.5 mm (5.6 in)28 January 1992
Feb81.6 mm (3.2 in)12 February 1978
Mar111.0 mm (4.4 in)9 March 1960
Apr74.2 mm (2.9 in)28 April 1964
May106.5 mm (4.2 in)3 May 1978
Jun30.8 mm (1.2 in)2 June 1998
Jul22.0 mm (0.9 in)27 July 1969
Aug30.2 mm (1.2 in)24 August 1986
Sep58.4 mm (2.3 in)30 September 1976
Oct61.0 mm (2.4 in)14 October 1968
Nov137.0 mm (5.4 in)29 November 1947
Dec130.5 mm (5.1 in)28 December 1944

Latest Records

20
Latest records at Ia?U
DateStationRecordValueBeat old record byOld record stoodSignificance
20 March 1999Ia?U, BRdaily rain43.0 mm (1.7 in)24.4 mm (1.0 in)32 years28 of 100 (Routine)
4 December 1998Ia?U, BRdaily rain41.1 mm (1.6 in)1.1 mm (0.04 in)8 years7 of 100 (Routine)
22 October 1998Ia?U, BRdaily rain6.4 mm (0.25 in)2.0 mm (0.08 in)7 years9 of 100 (Routine)
2 June 1998Ia?U, BRmonthly rain30.8 mm (1.2 in)0.6 mm (0.02 in)5 years17 of 100 (Routine)
18 October 1997Ia?U, BRdaily rain10.4 mm (0.4 in)0.4 mm (0.02 in)44 years18 of 100 (Routine)
19 July 1997Ia?U, BRdaily rain6.0 mm (0.24 in)0.5 mm (0.02 in)51 years20 of 100 (Routine)
7 July 1997Ia?U, BRdaily rain10.0 mm (0.4 in)0.8 mm (0.03 in)7 years9 of 100 (Routine)
29 April 1997Ia?U, BRdaily rain21.2 mm (0.8 in)4.2 mm (0.17 in)39 years20 of 100 (Routine)
21 April 1997Ia?U, BRdaily rain55.6 mm (2.2 in)43.6 mm (1.7 in)52 years60 of 100 (Major)
19 March 1997Ia?U, BRdaily rain30.0 mm (1.2 in)12.0 mm (0.5 in)12 years14 of 100 (Routine)
4 March 1997Ia?U, BRdaily rain96.2 mm (3.8 in)19.2 mm (0.8 in)40 years28 of 100 (Routine)
3 March 1997Ia?U, BRdaily rain28.5 mm (1.1 in)5.9 mm (0.23 in)52 years23 of 100 (Routine)
23 February 1997Ia?U, BRdaily rain17.2 mm (0.7 in)4.6 mm (0.18 in)18 years13 of 100 (Routine)
19 January 1997Ia?U, BRdaily rain46.5 mm (1.8 in)31.7 mm (1.2 in)33 years30 of 100 (Routine)
3 January 1997Ia?U, BRdaily rain69.0 mm (2.7 in)39.0 mm (1.5 in)23 years31 of 100 (Routine)
24 November 1996Ia?U, BRdaily rain78.6 mm (3.1 in)3.6 mm (0.14 in)32 years15 of 100 (Routine)
23 August 1996Ia?U, BRdaily rain (Tie)7.0 mm (0.28 in)tie44 years4 of 100 (Routine)
3 July 1996Ia?U, BRdaily rain10.2 mm (0.4 in)5.2 mm (0.20 in)37 years20 of 100 (Routine)
29 February 1996Ia?U, BRdaily rain (Tie)23.7 mm (0.9 in)tie48 years4 of 100 (Routine)
21 November 1995Ia?U, BRdaily rain87.0 mm (3.4 in)44.8 mm (1.8 in)26 years36 of 100 (Notable)

Extremes by Year

1944 to 1999
Yearly extremes at Ia?U: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)142.5 mm (5.6 in)199268.6 mm (2.7 in)54
Wettest five days (Rx5day)378.3 mm (14.9 in)1992115.9 mm (4.6 in)54
Longest dry spell (CDD)114 days196139 days54

Wettest day (Rx1day)

Wettest day (Rx1day) at Ia?U by year The wettest day of the year at Ia?U, 1944 to 1999. The record is 142.5 mm (5.6 in) in 1992, marked on the chart; the median year is 68.6 mm (2.7 in). 05010015019501960197019801990Record: 142.5 mm (5.6 in) in 1992
The wettest day of the year at Ia?U, 1944 to 1999. The record is 142.5 mm (5.6 in) in 1992, marked on the chart; the median year is 68.6 mm (2.7 in).
Wettest day (Rx1day) at Ia?U by year
YearWettest day (Rx1day)
1944130.5 mm (5.1 in)
1945112.6 mm (4.4 in)
194681.0 mm (3.2 in)
1947137.0 mm (5.4 in)
194883.0 mm (3.3 in)
194922.2 mm (0.9 in)
195045.0 mm (1.8 in)
195142.0 mm (1.7 in)
195260.4 mm (2.4 in)
195359.0 mm (2.3 in)
195432.0 mm (1.3 in)
195551.4 mm (2.0 in)
195677.0 mm (3.0 in)
195774.0 mm (2.9 in)
195885.4 mm (3.4 in)
195972.5 mm (2.9 in)
1960111.0 mm (4.4 in)
196130.0 mm (1.2 in)
196245.0 mm (1.8 in)
196379.2 mm (3.1 in)
1964101.0 mm (4.0 in)
196571.0 mm (2.8 in)
196657.2 mm (2.3 in)
1967103.4 mm (4.1 in)
196877.8 mm (3.1 in)
196964.6 mm (2.5 in)
197265.0 mm (2.6 in)
197392.1 mm (3.6 in)
197430.0 mm (1.2 in)
197557.0 mm (2.2 in)
197662.9 mm (2.5 in)
197773.7 mm (2.9 in)
1978106.5 mm (4.2 in)
197955.1 mm (2.2 in)
198080.0 mm (3.1 in)
198177.0 mm (3.0 in)
198270.9 mm (2.8 in)
198341.0 mm (1.6 in)
198426.4 mm (1.0 in)
198566.3 mm (2.6 in)
198632.0 mm (1.3 in)
198718.6 mm (0.7 in)
198848.6 mm (1.9 in)
198975.6 mm (3.0 in)
199054.3 mm (2.1 in)
199150.5 mm (2.0 in)
1992142.5 mm (5.6 in)
199324.0 mm (0.9 in)
199495.0 mm (3.7 in)
199587.0 mm (3.4 in)
199678.6 mm (3.1 in)
199796.2 mm (3.8 in)
199841.1 mm (1.6 in)
199943.0 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ia?U by year The wettest five days of the year at Ia?U, 1944 to 1999. The record is 378.3 mm (14.9 in) in 1992, marked on the chart; the median year is 115.9 mm (4.6 in). 010020030040019501960197019801990Record: 378.3 mm (14.9 in) in 1992
The wettest five days of the year at Ia?U, 1944 to 1999. The record is 378.3 mm (14.9 in) in 1992, marked on the chart; the median year is 115.9 mm (4.6 in).
Wettest five days (Rx5day) at Ia?U by year
YearWettest five days (Rx5day)
1944228.4 mm (9.0 in)
1945170.3 mm (6.7 in)
194683.7 mm (3.3 in)
1947247.2 mm (9.7 in)
1948173.0 mm (6.8 in)
194944.2 mm (1.7 in)
195062.5 mm (2.5 in)
195176.0 mm (3.0 in)
1952152.0 mm (6.0 in)
1953155.0 mm (6.1 in)
195443.0 mm (1.7 in)
1955101.8 mm (4.0 in)
1956112.2 mm (4.4 in)
1957145.0 mm (5.7 in)
1958112.0 mm (4.4 in)
1959119.0 mm (4.7 in)
1960244.2 mm (9.6 in)
196149.0 mm (1.9 in)
196259.0 mm (2.3 in)
1963145.4 mm (5.7 in)
1964342.2 mm (13.5 in)
196591.8 mm (3.6 in)
1966147.5 mm (5.8 in)
1967154.4 mm (6.1 in)
1968147.1 mm (5.8 in)
1969121.0 mm (4.8 in)
1972193.0 mm (7.6 in)
1973168.3 mm (6.6 in)
197476.2 mm (3.0 in)
197594.6 mm (3.7 in)
1976108.6 mm (4.3 in)
197778.6 mm (3.1 in)
1978150.9 mm (5.9 in)
1979129.3 mm (5.1 in)
1980119.5 mm (4.7 in)
1981212.0 mm (8.3 in)
198279.7 mm (3.1 in)
1983113.2 mm (4.5 in)
198444.3 mm (1.7 in)
1985212.9 mm (8.4 in)
198650.1 mm (2.0 in)
198725.7 mm (1.0 in)
1988118.5 mm (4.7 in)
1989210.0 mm (8.3 in)
199054.3 mm (2.1 in)
199195.7 mm (3.8 in)
1992378.3 mm (14.9 in)
199336.0 mm (1.4 in)
1994141.0 mm (5.6 in)
199599.6 mm (3.9 in)
199679.8 mm (3.1 in)
1997134.2 mm (5.3 in)
199853.2 mm (2.1 in)
199965.8 mm (2.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ia?U by year The longest dry spell of the year at Ia?U, 1944 to 1999. The record is 114 days in 1961, marked on the chart; the median year is 39 days. 025507510012519501960197019801990Record: 114 days in 1961
The longest dry spell of the year at Ia?U, 1944 to 1999. The record is 114 days in 1961, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at Ia?U by year
YearLongest dry spell (CDD)
194421 days
194524 days
194637 days
194732 days
194828 days
194930 days
195049 days
195190 days
195249 days
195343 days
195426 days
195539 days
195637 days
195742 days
195854 days
195972 days
196023 days
1961114 days
196292 days
196342 days
196432 days
196534 days
196650 days
196739 days
196861 days
196925 days
197255 days
197331 days
197421 days
197549 days
197632 days
197735 days
197821 days
197943 days
198048 days
198162 days
198232 days
198325 days
198456 days
198553 days
198631 days
198756 days
198832 days
198933 days
199025 days
199129 days
199230 days
199339 days
199449 days
199548 days
199651 days
199746 days
199838 days
199922 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

46 years, 1945 to 1998

A day with at least 68.5 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 141.5 mm (5.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Ia?U: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years68.5 mm (2.7 in)
5 years93.9 mm (3.7 in)
10 years108.0 mm (4.3 in)
25 years123.3 mm (4.9 in)
50 years133.0 mm (5.2 in)Longer than the 46 years of record
100 years141.5 mm (5.6 in)Longer than the 46 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, 46 years of values from 1945 to 1998.

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: 142.5 mm (5.6 in) in 1992; 137.0 mm (5.4 in) in 1947; 112.6 mm (4.4 in) in 1945.

Download the Data

  • Data for Ia?U standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ia?U 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

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