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

Bau Weather Records (BR000438011)

Record envelope, standing records and threshold days for Bau (BR000438011), Brazil, with 85 years of record.

Key Facts for Bau

  • Bau (BR000438011) is a weather station in Brazil at -4.12 latitude and -38.58 longitude, 59 m (194 ft) above sea level.
  • The station reports from 1916 to 2000, 85 years of record.
  • 0 records set at Bau still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Bau set a daily record precipitation of 7.3 mm (0.29 in) on 30 August 2000.

About the Station

  • Location: Brazil, -4.12 latitude, -38.58 longitude.
  • Elevation: 59 m (194 ft).
  • Period of record: 1916 to 2000, 85 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Bau, with 2026 drawn through them The band shows the record high and record low for each calendar day at Bau. 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 Bau. 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 Bau, 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 Bau by the year they were set 0 records at Bau still stand. 00000000000
0 records at Bau still stand.
Standing records at Bau by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When Bau set new all-time records 1 all-time records were set at Bau between 2 February 1985 and 2 February 1985. Each dot is a new record. Record daily precipitation2 February 1985: Record daily precipitation 152.0 mm (6.0 in)1985
1 all-time records were set at Bau between 2 February 1985 and 2 February 1985. Each dot is a new record.
When Bau set new all-time records
DateKindDetail
1985-02-02Record daily precipitationRecord daily precipitation 152.0 mm (6.0 in)

Wettest Day of Each Month

Feb: 152.0 mm (6.0 in)
Record daily precipitation for each month at Bau The wettest day on record for each calendar month at Bau. The most was 152.0 mm (6.0 in) on 2 February 1985. 050100150200 Jan: 106.6 mm (4.2 in), 2 January 1917 Jan Feb: 152.0 mm (6.0 in), 2 February 1985 Feb Mar: 106.5 mm (4.2 in), 29 March 1997 Mar Apr: 138.2 mm (5.4 in), 5 April 1965 Apr May: 68.1 mm (2.7 in), 23 May 1974 May Jun: 89.0 mm (3.5 in), 15 June 1973 Jun Jul: 49.5 mm (1.9 in), 13 July 2000 Jul Aug: 37.7 mm (1.5 in), 7 August 2000 Aug Sep: 31.1 mm (1.2 in), 21 September 1921 Sep Oct: 28.5 mm (1.1 in), 30 October 1992 Oct Nov: 33.1 mm (1.3 in), 13 November 1987 Nov Dec: 68.8 mm (2.7 in), 6 December 1975 Dec
The wettest day on record for each calendar month at Bau. The most was 152.0 mm (6.0 in) on 2 February 1985.
Record daily precipitation for each month at Bau
MonthRecord daily precipitation (mm)Date
Jan106.6 mm (4.2 in)2 January 1917
Feb152.0 mm (6.0 in)2 February 1985
Mar106.5 mm (4.2 in)29 March 1997
Apr138.2 mm (5.4 in)5 April 1965
May68.1 mm (2.7 in)23 May 1974
Jun89.0 mm (3.5 in)15 June 1973
Jul49.5 mm (1.9 in)13 July 2000
Aug37.7 mm (1.5 in)7 August 2000
Sep31.1 mm (1.2 in)21 September 1921
Oct28.5 mm (1.1 in)30 October 1992
Nov33.1 mm (1.3 in)13 November 1987
Dec68.8 mm (2.7 in)6 December 1975

Latest Records

20
Latest records at Bau
DateStationRecordValueBeat old record byOld record stoodSignificance
30 August 2000Bau, BRdaily rain7.3 mm (0.29 in)1.8 mm (0.07 in)8 years14 of 100 (Routine)
26 August 2000Bau, BRdaily rain11.6 mm (0.5 in)9.3 mm (0.37 in)28 years20 of 100 (Routine)
9 August 2000Bau, BRdaily rain5.3 mm (0.21 in)0.2 mm (0.01 in)82 years20 of 100 (Routine)
8 August 2000Bau, BRdaily rain23.2 mm (0.9 in)22.4 mm (0.9 in)82 years20 of 100 (Routine)
7 August 2000Bau, BRmonthly rain37.7 mm (1.5 in)6.4 mm (0.25 in)80 years56 of 100 (Notable)
2 August 2000Bau, BRdaily rain27.8 mm (1.1 in)19.0 mm (0.7 in)26 years55 of 100 (Notable)
13 July 2000Bau, BRmonthly rain49.5 mm (1.9 in)3.6 mm (0.14 in)78 years45 of 100 (Notable)
18 January 2000Bau, BRdaily rain33.7 mm (1.3 in)16.4 mm (0.6 in)25 years27 of 100 (Routine)
10 January 2000Bau, BRdaily rain11.9 mm (0.5 in)1.8 mm (0.07 in)10 years12 of 100 (Routine)
6 January 2000Bau, BRdaily rain18.8 mm (0.7 in)8.4 mm (0.33 in)5 years15 of 100 (Routine)
13 September 1999Bau, BRdaily rain16.7 mm (0.7 in)12.7 mm (0.5 in)5 years20 of 100 (Routine)
26 June 1999Bau, BRdaily rain40.2 mm (1.6 in)5.3 mm (0.21 in)4 years14 of 100 (Routine)
28 April 1999Bau, BRdaily rain57.3 mm (2.3 in)8.8 mm (0.35 in)73 years35 of 100 (Notable)
8 October 1998Bau, BRdaily rain3.0 mm (0.12 in)1.3 mm (0.05 in)28 years19 of 100 (Routine)
16 August 1998Bau, BRdaily rain5.3 mm (0.21 in)1.3 mm (0.05 in)8 years13 of 100 (Routine)
15 August 1998Bau, BRdaily rain14.4 mm (0.6 in)12.6 mm (0.5 in)4 years20 of 100 (Routine)
29 January 1998Bau, BRdaily rain76.7 mm (3.0 in)57.4 mm (2.3 in)80 years72 of 100 (Major)
21 January 1998Bau, BRdaily rain37.0 mm (1.5 in)14.6 mm (0.6 in)27 years27 of 100 (Routine)
22 December 1997Bau, BRdaily rain22.7 mm (0.9 in)16.9 mm (0.7 in)22 years20 of 100 (Routine)
21 December 1997Bau, BRdaily rain24.8 mm (1.0 in)14.5 mm (0.6 in)80 years20 of 100 (Routine)

Extremes by Year

1916 to 2000
Yearly extremes at Bau: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)152.0 mm (6.0 in)198565.6 mm (2.6 in)49
Wettest five days (Rx5day)329.4 mm (13.0 in)1985131.5 mm (5.2 in)49
Longest dry spell (CDD)214 days198148 days49

Wettest day (Rx1day)

Wettest day (Rx1day) at Bau by year The wettest day of the year at Bau, 1916 to 2000. The record is 152.0 mm (6.0 in) in 1985, marked on the chart; the median year is 65.6 mm (2.6 in). 05010015020019201940196019802000Record: 152.0 mm (6.0 in) in 1985
The wettest day of the year at Bau, 1916 to 2000. The record is 152.0 mm (6.0 in) in 1985, marked on the chart; the median year is 65.6 mm (2.6 in).
Wettest day (Rx1day) at Bau by year
YearWettest day (Rx1day)
191654.8 mm (2.2 in)
1917106.6 mm (4.2 in)
191862.7 mm (2.5 in)
191931.3 mm (1.2 in)
192098.2 mm (3.9 in)
192160.2 mm (2.4 in)
192260.6 mm (2.4 in)
192340.0 mm (1.6 in)
192491.8 mm (3.6 in)
192569.3 mm (2.7 in)
192665.6 mm (2.6 in)
192768.8 mm (2.7 in)
192892.5 mm (3.6 in)
192968.7 mm (2.7 in)
193049.8 mm (2.0 in)
196241.2 mm (1.6 in)
196375.2 mm (3.0 in)
196492.4 mm (3.6 in)
1965138.2 mm (5.4 in)
196656.2 mm (2.2 in)
196759.8 mm (2.4 in)
196893.2 mm (3.7 in)
196970.9 mm (2.8 in)
197046.5 mm (1.8 in)
197153.3 mm (2.1 in)
197245.9 mm (1.8 in)
197389.2 mm (3.5 in)
197488.5 mm (3.5 in)
197568.8 mm (2.7 in)
197642.0 mm (1.7 in)
197765.6 mm (2.6 in)
197876.1 mm (3.0 in)
19796.3 mm (0.25 in)
198180.8 mm (3.2 in)
1985152.0 mm (6.0 in)
198645.2 mm (1.8 in)
198737.1 mm (1.5 in)
198896.3 mm (3.8 in)
198954.8 mm (2.2 in)
199150.7 mm (2.0 in)
199258.0 mm (2.3 in)
199340.7 mm (1.6 in)
199486.0 mm (3.4 in)
199565.5 mm (2.6 in)
199681.3 mm (3.2 in)
1997106.5 mm (4.2 in)
199876.7 mm (3.0 in)
199957.3 mm (2.3 in)
200086.5 mm (3.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Bau by year The wettest five days of the year at Bau, 1916 to 2000. The record is 329.4 mm (13.0 in) in 1985, marked on the chart; the median year is 131.5 mm (5.2 in). 010020030040019201940196019802000Record: 329.4 mm (13.0 in) in 1985
The wettest five days of the year at Bau, 1916 to 2000. The record is 329.4 mm (13.0 in) in 1985, marked on the chart; the median year is 131.5 mm (5.2 in).
Wettest five days (Rx5day) at Bau by year
YearWettest five days (Rx5day)
1916120.5 mm (4.7 in)
1917277.1 mm (10.9 in)
1918156.9 mm (6.2 in)
191982.4 mm (3.2 in)
1920161.6 mm (6.4 in)
1921162.7 mm (6.4 in)
1922218.5 mm (8.6 in)
192385.6 mm (3.4 in)
1924172.5 mm (6.8 in)
1925134.3 mm (5.3 in)
1926133.7 mm (5.3 in)
1927159.7 mm (6.3 in)
1928112.9 mm (4.4 in)
1929105.0 mm (4.1 in)
193076.8 mm (3.0 in)
196248.5 mm (1.9 in)
1963219.3 mm (8.6 in)
1964262.7 mm (10.3 in)
1965221.9 mm (8.7 in)
196694.8 mm (3.7 in)
196794.8 mm (3.7 in)
1968118.5 mm (4.7 in)
1969139.3 mm (5.5 in)
197089.5 mm (3.5 in)
1971118.7 mm (4.7 in)
197290.9 mm (3.6 in)
1973162.6 mm (6.4 in)
1974147.9 mm (5.8 in)
1975208.7 mm (8.2 in)
1976131.5 mm (5.2 in)
1977116.4 mm (4.6 in)
1978155.8 mm (6.1 in)
19796.3 mm (0.25 in)
1981150.9 mm (5.9 in)
1985329.4 mm (13.0 in)
1986129.5 mm (5.1 in)
1987110.0 mm (4.3 in)
1988155.6 mm (6.1 in)
198995.7 mm (3.8 in)
1991103.0 mm (4.1 in)
1992102.8 mm (4.0 in)
199394.5 mm (3.7 in)
1994118.1 mm (4.6 in)
1995198.6 mm (7.8 in)
1996194.0 mm (7.6 in)
1997177.0 mm (7.0 in)
1998119.5 mm (4.7 in)
199992.7 mm (3.6 in)
2000145.8 mm (5.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Bau by year The longest dry spell of the year at Bau, 1916 to 2000. The record is 214 days in 1981, marked on the chart; the median year is 48 days. 05010015020025019201940196019802000Record: 214 days in 1981
The longest dry spell of the year at Bau, 1916 to 2000. The record is 214 days in 1981, marked on the chart; the median year is 48 days.
Longest dry spell (CDD) at Bau by year
YearLongest dry spell (CDD)
191667 days
191748 days
191848 days
191936 days
192019 days
192137 days
192263 days
192339 days
192437 days
192518 days
192633 days
192756 days
192861 days
192939 days
193059 days
196265 days
1963117 days
196456 days
196573 days
196628 days
196740 days
1968152 days
196959 days
197039 days
197150 days
197234 days
197339 days
197446 days
197536 days
197641 days
197730 days
197872 days
197938 days
1981214 days
198531 days
198633 days
198765 days
1988122 days
198977 days
199156 days
199260 days
199334 days
199448 days
199593 days
199650 days
199755 days
199834 days
199967 days
200056 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, 1917 to 2000

A day with at least 68.9 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 133.0 mm (5.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Bau: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years68.9 mm (2.7 in)
5 years89.2 mm (3.5 in)
10 years101.3 mm (4.0 in)
25 years115.1 mm (4.5 in)
50 years124.4 mm (4.9 in)Longer than the 38 years of record
100 years133.0 mm (5.2 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 1917 to 2000.

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: 138.2 mm (5.4 in) in 1965; 106.6 mm (4.2 in) in 1917; 106.5 mm (4.2 in) in 1997.

Download the Data

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