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

Acu Weather Records (BR038161230)

Record envelope, standing records and threshold days for Acu (BR038161230), Brazil, with 67 years of record.

Key Facts for Acu

  • Acu (BR038161230) is a weather station in Brazil at -5.58 latitude and -36.90 longitude, 68 m (223 ft) above sea level.
  • The station reports from 1910 to 1976, 67 years of record.
  • 0 records set at Acu still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Acu set a daily record precipitation of 84.2 mm (3.3 in) on 31 March 1976.

About the Station

  • Location: Brazil, -5.58 latitude, -36.90 longitude.
  • Elevation: 68 m (223 ft).
  • Period of record: 1910 to 1976, 67 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

All-Time Record Progression

1 new records
When Acu set new all-time records 1 all-time records were set at Acu between 6 March 1955 and 6 March 1955. Each dot is a new record. Record daily precipitation6 March 1955: Record daily precipitation 129.0 mm (5.1 in)1955
1 all-time records were set at Acu between 6 March 1955 and 6 March 1955. Each dot is a new record.
When Acu set new all-time records
DateKindDetail
1955-03-06Record daily precipitationRecord daily precipitation 129.0 mm (5.1 in)

Wettest Day of Each Month

Mar: 129.0 mm (5.1 in)
Record daily precipitation for each month at Acu The wettest day on record for each calendar month at Acu. The most was 129.0 mm (5.1 in) on 6 March 1955. 050100150 Jan: 89.2 mm (3.5 in), 18 January 1933 Jan Feb: 86.0 mm (3.4 in), 10 February 1964 Feb Mar: 129.0 mm (5.1 in), 6 March 1955 Mar Apr: 85.3 mm (3.4 in), 29 April 1939 Apr May: 82.4 mm (3.2 in), 7 May 1925 May Jun: 70.6 mm (2.8 in), 9 June 1922 Jun Jul: 51.6 mm (2.0 in), 14 July 1921 Jul Aug: 30.5 mm (1.2 in), 6 August 1914 Aug Sep: 14.0 mm (0.6 in), 5 September 1942 Sep Oct: 7.0 mm (0.28 in), 18 October 1939 Oct Nov: 63.0 mm (2.5 in), 28 November 1963 Nov Dec: 60.0 mm (2.4 in), 10 December 1957 Dec
The wettest day on record for each calendar month at Acu. The most was 129.0 mm (5.1 in) on 6 March 1955.
Record daily precipitation for each month at Acu
MonthRecord daily precipitation (mm)Date
Jan89.2 mm (3.5 in)18 January 1933
Feb86.0 mm (3.4 in)10 February 1964
Mar129.0 mm (5.1 in)6 March 1955
Apr85.3 mm (3.4 in)29 April 1939
May82.4 mm (3.2 in)7 May 1925
Jun70.6 mm (2.8 in)9 June 1922
Jul51.6 mm (2.0 in)14 July 1921
Aug30.5 mm (1.2 in)6 August 1914
Sep14.0 mm (0.6 in)5 September 1942
Oct7.0 mm (0.28 in)18 October 1939
Nov63.0 mm (2.5 in)28 November 1963
Dec60.0 mm (2.4 in)10 December 1957

Latest Records

20
Latest records at Acu
DateStationRecordValueBeat old record byOld record stoodSignificance
31 March 1976Acu, BRdaily rain84.2 mm (3.3 in)63.2 mm (2.5 in)9 years46 of 100 (Notable)
17 November 1975Acu, BRdaily rain0.6 mm (0.02 in)0.6 mm (0.02 in)64 years20 of 100 (Routine)
30 August 1972Acu, BRdaily rain0.2 mm (0.01 in)0.2 mm (0.01 in)61 years20 of 100 (Routine)
27 August 1972Acu, BRdaily rain9.1 mm (0.36 in)9.1 mm (0.36 in)61 years20 of 100 (Routine)
23 June 1972Acu, BRdaily rain14.7 mm (0.6 in)6.9 mm (0.27 in)58 years20 of 100 (Routine)
17 May 1972Acu, BRdaily rain33.0 mm (1.3 in)2.8 mm (0.11 in)48 years22 of 100 (Routine)
12 January 1972Acu, BRdaily rain5.2 mm (0.20 in)2.2 mm (0.09 in)54 years20 of 100 (Routine)
11 December 1970Acu, BRdaily rain3.5 mm (0.14 in)2.1 mm (0.08 in)40 years19 of 100 (Routine)
7 August 1970Acu, BRdaily rain6.7 mm (0.26 in)5.2 mm (0.20 in)0 years13 of 100 (Routine)
15 March 1970Acu, BRdaily rain26.8 mm (1.1 in)1.3 mm (0.05 in)13 years10 of 100 (Routine)
1 February 1970Acu, BRdaily rain36.2 mm (1.4 in)10.2 mm (0.4 in)27 years20 of 100 (Routine)
23 January 1970Acu, BRdaily rain47.5 mm (1.9 in)16.9 mm (0.7 in)56 years33 of 100 (Routine)
7 August 1969Acu, BRdaily rain1.5 mm (0.06 in)1.4 mm (0.06 in)56 years20 of 100 (Routine)
20 July 1969Acu, BRdaily rain4.6 mm (0.18 in)1.8 mm (0.07 in)48 years20 of 100 (Routine)
28 May 1969Acu, BRdaily rain (Tie)16.2 mm (0.6 in)tie48 years5 of 100 (Routine)
24 May 1969Acu, BRdaily rain39.5 mm (1.6 in)8.9 mm (0.35 in)52 years27 of 100 (Routine)
27 December 1968Acu, BRdaily rain33.8 mm (1.3 in)28.8 mm (1.1 in)30 years34 of 100 (Routine)
26 August 1968Acu, BRdaily rain2.6 mm (0.10 in)1.3 mm (0.05 in)49 years20 of 100 (Routine)
6 July 1968Acu, BRdaily rain11.0 mm (0.4 in)3.0 mm (0.12 in)20 years15 of 100 (Routine)
28 April 1968Acu, BRdaily rain42.0 mm (1.7 in)8.7 mm (0.34 in)4 years11 of 100 (Routine)

Extremes by Year

1910 to 1976
Yearly extremes at Acu: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)129.0 mm (5.1 in)195558.3 mm (2.3 in)60
Wettest five days (Rx5day)206.3 mm (8.1 in)195597.5 mm (3.8 in)60
Longest dry spell (CDD)344 days1930143 days60

Wettest day (Rx1day)

Wettest day (Rx1day) at Acu by year The wettest day of the year at Acu, 1910 to 1976. The record is 129.0 mm (5.1 in) in 1955, marked on the chart; the median year is 58.3 mm (2.3 in). 050100150192019401960Record: 129.0 mm (5.1 in) in 1955
The wettest day of the year at Acu, 1910 to 1976. The record is 129.0 mm (5.1 in) in 1955, marked on the chart; the median year is 58.3 mm (2.3 in).
Wettest day (Rx1day) at Acu by year
YearWettest day (Rx1day)
191035.0 mm (1.4 in)
191151.0 mm (2.0 in)
191248.4 mm (1.9 in)
191368.0 mm (2.7 in)
191450.0 mm (2.0 in)
191527.3 mm (1.1 in)
191658.5 mm (2.3 in)
191771.3 mm (2.8 in)
191848.2 mm (1.9 in)
191950.2 mm (2.0 in)
192076.2 mm (3.0 in)
192167.5 mm (2.7 in)
192270.6 mm (2.8 in)
192362.5 mm (2.5 in)
192489.9 mm (3.5 in)
192582.4 mm (3.2 in)
192648.0 mm (1.9 in)
192776.2 mm (3.0 in)
192841.4 mm (1.6 in)
192939.6 mm (1.6 in)
19301.4 mm (0.06 in)
193160.0 mm (2.4 in)
193246.0 mm (1.8 in)
193389.2 mm (3.5 in)
193455.0 mm (2.2 in)
193562.3 mm (2.5 in)
193663.0 mm (2.5 in)
193768.0 mm (2.7 in)
193875.0 mm (3.0 in)
193985.3 mm (3.4 in)
194061.5 mm (2.4 in)
194136.0 mm (1.4 in)
194221.0 mm (0.8 in)
194342.0 mm (1.7 in)
194460.0 mm (2.4 in)
194550.0 mm (2.0 in)
194658.0 mm (2.3 in)
194746.3 mm (1.8 in)
194840.0 mm (1.6 in)
194958.0 mm (2.3 in)
195060.0 mm (2.4 in)
195136.3 mm (1.4 in)
195250.0 mm (2.0 in)
195335.2 mm (1.4 in)
195431.0 mm (1.2 in)
1955129.0 mm (5.1 in)
195674.3 mm (2.9 in)
195774.0 mm (2.9 in)
196221.0 mm (0.8 in)
196366.4 mm (2.6 in)
196486.0 mm (3.4 in)
196560.3 mm (2.4 in)
196670.2 mm (2.8 in)
196760.4 mm (2.4 in)
196870.9 mm (2.8 in)
196952.0 mm (2.0 in)
197047.5 mm (1.9 in)
197250.0 mm (2.0 in)
19750.6 mm (0.02 in)
197684.2 mm (3.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Acu by year The wettest five days of the year at Acu, 1910 to 1976. The record is 206.3 mm (8.1 in) in 1955, marked on the chart; the median year is 97.5 mm (3.8 in). 0100200300192019401960Record: 206.3 mm (8.1 in) in 1955
The wettest five days of the year at Acu, 1910 to 1976. The record is 206.3 mm (8.1 in) in 1955, marked on the chart; the median year is 97.5 mm (3.8 in).
Wettest five days (Rx5day) at Acu by year
YearWettest five days (Rx5day)
191062.2 mm (2.4 in)
191172.0 mm (2.8 in)
191276.4 mm (3.0 in)
1913119.8 mm (4.7 in)
1914116.7 mm (4.6 in)
191535.5 mm (1.4 in)
191686.2 mm (3.4 in)
1917173.5 mm (6.8 in)
191877.7 mm (3.1 in)
191958.9 mm (2.3 in)
192097.4 mm (3.8 in)
1921125.0 mm (4.9 in)
1922150.6 mm (5.9 in)
192388.5 mm (3.5 in)
1924130.5 mm (5.1 in)
1925131.7 mm (5.2 in)
1926143.5 mm (5.6 in)
192797.5 mm (3.8 in)
192882.4 mm (3.2 in)
192964.5 mm (2.5 in)
19301.4 mm (0.06 in)
193182.4 mm (3.2 in)
193248.4 mm (1.9 in)
1933138.9 mm (5.5 in)
193481.0 mm (3.2 in)
1935182.3 mm (7.2 in)
193663.0 mm (2.5 in)
1937103.5 mm (4.1 in)
193884.5 mm (3.3 in)
193998.6 mm (3.9 in)
1940101.4 mm (4.0 in)
1941105.0 mm (4.1 in)
194235.0 mm (1.4 in)
194382.0 mm (3.2 in)
1944125.7 mm (4.9 in)
194593.5 mm (3.7 in)
194658.0 mm (2.3 in)
194780.2 mm (3.2 in)
194898.5 mm (3.9 in)
1949113.0 mm (4.4 in)
1950116.0 mm (4.6 in)
195157.8 mm (2.3 in)
195266.7 mm (2.6 in)
195347.8 mm (1.9 in)
195449.2 mm (1.9 in)
1955206.3 mm (8.1 in)
1956112.0 mm (4.4 in)
1957153.0 mm (6.0 in)
196222.0 mm (0.9 in)
1963107.4 mm (4.2 in)
1964125.0 mm (4.9 in)
1965109.6 mm (4.3 in)
1966101.3 mm (4.0 in)
1967100.2 mm (3.9 in)
1968136.0 mm (5.4 in)
1969105.2 mm (4.1 in)
197080.8 mm (3.2 in)
197279.3 mm (3.1 in)
19750.6 mm (0.02 in)
1976111.7 mm (4.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Acu by year The longest dry spell of the year at Acu, 1910 to 1976. The record is 344 days in 1930, marked on the chart; the median year is 143 days. 0100200300400192019401960Record: 344 days in 1930
The longest dry spell of the year at Acu, 1910 to 1976. The record is 344 days in 1930, marked on the chart; the median year is 143 days.
Longest dry spell (CDD) at Acu by year
YearLongest dry spell (CDD)
191021 days
1911104 days
191274 days
1913103 days
1914135 days
1915144 days
1916150 days
191766 days
1918120 days
1919106 days
192090 days
192150 days
192289 days
1923155 days
192488 days
1925136 days
1926179 days
1927174 days
1928184 days
1929307 days
1930344 days
1931162 days
1932196 days
1933183 days
1934173 days
1935155 days
1936154 days
1937111 days
1938131 days
193940 days
1940152 days
1941204 days
194288 days
1943156 days
1944187 days
1945165 days
1946186 days
1947150 days
194863 days
194995 days
1950222 days
1951166 days
1952165 days
1953166 days
1954214 days
1955141 days
1956130 days
1957160 days
1962162 days
1963144 days
1964115 days
1965188 days
196648 days
1967123 days
1968118 days
1969140 days
1970125 days
197240 days
197530 days
19766 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

54 years, 1911 to 1970

A day with at least 57.5 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 103.8 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Acu: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years57.5 mm (2.3 in)
5 years74.7 mm (2.9 in)
10 years83.8 mm (3.3 in)
25 years93.2 mm (3.7 in)
50 years99.0 mm (3.9 in)
100 years103.8 mm (4.1 in)Longer than the 54 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, 54 years of values from 1911 to 1970.

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: 129.0 mm (5.1 in) in 1955; 89.9 mm (3.5 in) in 1924; 89.2 mm (3.5 in) in 1933.

Download the Data

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