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

Riacho Weather Records (BR001940003)

Record envelope, standing records and threshold days for Riacho (BR001940003), Brazil, with 54 years of record.

Key Facts for Riacho

  • Riacho (BR001940003) is a weather station in Brazil at -19.75 latitude and -40.04 longitude, 5 m (16 ft) above sea level.
  • The station reports from 1947 to 2000, 54 years of record.
  • 0 records set at Riacho still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Riacho set a daily record precipitation of 64.5 mm (2.5 in) on 18 December 2000.

About the Station

  • Location: Brazil, -19.75 latitude, -40.04 longitude.
  • Elevation: 5 m (16 ft).
  • Period of record: 1947 to 2000, 54 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

Which Years Hold Standing Records

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

All-Time Record Progression

1 new records
When Riacho set new all-time records 1 all-time records were set at Riacho between 10 December 1980 and 10 December 1980. Each dot is a new record. Record daily precipitation10 December 1980: Record daily precipitation 175.0 mm (6.9 in)1980
1 all-time records were set at Riacho between 10 December 1980 and 10 December 1980. Each dot is a new record.
When Riacho set new all-time records
DateKindDetail
1980-12-10Record daily precipitationRecord daily precipitation 175.0 mm (6.9 in)

Wettest Day of Each Month

Dec: 175.0 mm (6.9 in)
Record daily precipitation for each month at Riacho The wettest day on record for each calendar month at Riacho. The most was 175.0 mm (6.9 in) on 10 December 1980. 050100150200 Jan: 111.0 mm (4.4 in), 23 January 1975 Jan Feb: 116.0 mm (4.6 in), 10 February 1984 Feb Mar: 101.3 mm (4.0 in), 2 March 1960 Mar Apr: 90.3 mm (3.6 in), 30 April 1959 Apr May: 107.2 mm (4.2 in), 6 May 1948 May Jun: 62.2 mm (2.4 in), 23 June 1969 Jun Jul: 82.6 mm (3.3 in), 11 July 1978 Jul Aug: 90.3 mm (3.6 in), 31 August 1971 Aug Sep: 67.2 mm (2.6 in), 30 September 1985 Sep Oct: 142.6 mm (5.6 in), 16 October 1978 Oct Nov: 116.4 mm (4.6 in), 30 November 1983 Nov Dec: 175.0 mm (6.9 in), 10 December 1980 Dec
The wettest day on record for each calendar month at Riacho. The most was 175.0 mm (6.9 in) on 10 December 1980.
Record daily precipitation for each month at Riacho
MonthRecord daily precipitation (mm)Date
Jan111.0 mm (4.4 in)23 January 1975
Feb116.0 mm (4.6 in)10 February 1984
Mar101.3 mm (4.0 in)2 March 1960
Apr90.3 mm (3.6 in)30 April 1959
May107.2 mm (4.2 in)6 May 1948
Jun62.2 mm (2.4 in)23 June 1969
Jul82.6 mm (3.3 in)11 July 1978
Aug90.3 mm (3.6 in)31 August 1971
Sep67.2 mm (2.6 in)30 September 1985
Oct142.6 mm (5.6 in)16 October 1978
Nov116.4 mm (4.6 in)30 November 1983
Dec175.0 mm (6.9 in)10 December 1980

Latest Records

20
Latest records at Riacho
DateStationRecordValueBeat old record byOld record stoodSignificance
18 December 2000Riacho, BRdaily rain64.5 mm (2.5 in)22.2 mm (0.9 in)51 years33 of 100 (Routine)
7 December 2000Riacho, BRdaily rain28.6 mm (1.1 in)3.6 mm (0.14 in)16 years11 of 100 (Routine)
6 December 2000Riacho, BRdaily rain49.0 mm (1.9 in)23.0 mm (0.9 in)11 years21 of 100 (Routine)
8 November 2000Riacho, BRdaily rain32.8 mm (1.3 in)14.2 mm (0.6 in)48 years27 of 100 (Routine)
16 June 2000Riacho, BRdaily rain41.5 mm (1.6 in)16.5 mm (0.6 in)7 years27 of 100 (Routine)
9 April 2000Riacho, BRdaily rain40.5 mm (1.6 in)20.1 mm (0.8 in)50 years36 of 100 (Notable)
6 April 2000Riacho, BRdaily rain70.2 mm (2.8 in)41.9 mm (1.6 in)36 years48 of 100 (Notable)
5 April 2000Riacho, BRdaily rain80.5 mm (3.2 in)61.3 mm (2.4 in)28 years53 of 100 (Notable)
23 March 2000Riacho, BRdaily rain60.5 mm (2.4 in)35.5 mm (1.4 in)19 years33 of 100 (Routine)
13 December 1999Riacho, BRdaily rain28.2 mm (1.1 in)3.0 mm (0.12 in)26 years14 of 100 (Routine)
1 December 1999Riacho, BRdaily rain23.6 mm (0.9 in)9.3 mm (0.37 in)41 years20 of 100 (Routine)
6 November 1999Riacho, BRdaily rain33.0 mm (1.3 in)7.8 mm (0.31 in)45 years22 of 100 (Routine)
9 June 1999Riacho, BRdaily rain31.6 mm (1.2 in)19.6 mm (0.8 in)12 years33 of 100 (Routine)
13 March 1999Riacho, BRdaily rain (Tie)25.6 mm (1.0 in)tie13 years2 of 100 (Routine)
3 March 1999Riacho, BRdaily rain59.0 mm (2.3 in)3.7 mm (0.15 in)42 years19 of 100 (Routine)
28 November 1998Riacho, BRdaily rain65.0 mm (2.6 in)24.8 mm (1.0 in)0 years20 of 100 (Routine)
26 March 1998Riacho, BRdaily rain95.9 mm (3.8 in)54.7 mm (2.2 in)40 years54 of 100 (Notable)
28 November 1997Riacho, BRdaily rain40.2 mm (1.6 in)4.0 mm (0.16 in)10 years10 of 100 (Routine)
17 June 1997Riacho, BRdaily rain10.4 mm (0.4 in)2.4 mm (0.09 in)4 years9 of 100 (Routine)
30 May 1994Riacho, BRdaily rain26.3 mm (1.0 in)13.0 mm (0.5 in)28 years21 of 100 (Routine)

Extremes by Year

1947 to 2000
Yearly extremes at Riacho: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)175.0 mm (6.9 in)198078.2 mm (3.1 in)54
Wettest five days (Rx5day)340.7 mm (13.4 in)1948145.7 mm (5.7 in)54
Longest dry spell (CDD)48 days196323 days54

Wettest day (Rx1day)

Wettest day (Rx1day) at Riacho by year The wettest day of the year at Riacho, 1947 to 2000. The record is 175.0 mm (6.9 in) in 1980, marked on the chart; the median year is 78.2 mm (3.1 in). 050100150200195019601970198019902000Record: 175.0 mm (6.9 in) in 1980
The wettest day of the year at Riacho, 1947 to 2000. The record is 175.0 mm (6.9 in) in 1980, marked on the chart; the median year is 78.2 mm (3.1 in).
Wettest day (Rx1day) at Riacho by year
YearWettest day (Rx1day)
1947101.2 mm (4.0 in)
1948107.2 mm (4.2 in)
1949102.0 mm (4.0 in)
195075.3 mm (3.0 in)
195134.2 mm (1.3 in)
195242.3 mm (1.7 in)
195328.5 mm (1.1 in)
195428.4 mm (1.1 in)
195565.3 mm (2.6 in)
195661.3 mm (2.4 in)
195785.4 mm (3.4 in)
195879.0 mm (3.1 in)
195990.3 mm (3.6 in)
1960101.3 mm (4.0 in)
196180.0 mm (3.1 in)
196275.2 mm (3.0 in)
196332.4 mm (1.3 in)
1964103.2 mm (4.1 in)
196567.2 mm (2.6 in)
196679.2 mm (3.1 in)
1967122.0 mm (4.8 in)
196892.0 mm (3.6 in)
196998.3 mm (3.9 in)
197077.4 mm (3.0 in)
197190.3 mm (3.6 in)
197252.2 mm (2.1 in)
197371.2 mm (2.8 in)
197483.2 mm (3.3 in)
1975111.0 mm (4.4 in)
197681.0 mm (3.2 in)
197798.0 mm (3.9 in)
1978142.6 mm (5.6 in)
197995.2 mm (3.7 in)
1980175.0 mm (6.9 in)
198162.4 mm (2.5 in)
198296.0 mm (3.8 in)
1983116.4 mm (4.6 in)
1984133.2 mm (5.2 in)
198567.2 mm (2.6 in)
198653.0 mm (2.1 in)
198770.8 mm (2.8 in)
198875.6 mm (3.0 in)
1989100.8 mm (4.0 in)
199030.8 mm (1.2 in)
199165.0 mm (2.6 in)
199225.2 mm (1.0 in)
199328.4 mm (1.1 in)
199428.0 mm (1.1 in)
199528.6 mm (1.1 in)
199615.2 mm (0.6 in)
199770.4 mm (2.8 in)
199895.9 mm (3.8 in)
199959.0 mm (2.3 in)
200080.5 mm (3.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Riacho by year The wettest five days of the year at Riacho, 1947 to 2000. The record is 340.7 mm (13.4 in) in 1948, marked on the chart; the median year is 145.7 mm (5.7 in). 0100200300400195019601970198019902000Record: 340.7 mm (13.4 in) in 1948
The wettest five days of the year at Riacho, 1947 to 2000. The record is 340.7 mm (13.4 in) in 1948, marked on the chart; the median year is 145.7 mm (5.7 in).
Wettest five days (Rx5day) at Riacho by year
YearWettest five days (Rx5day)
1947209.2 mm (8.2 in)
1948340.7 mm (13.4 in)
1949276.3 mm (10.9 in)
1950120.8 mm (4.8 in)
1951110.4 mm (4.3 in)
1952137.0 mm (5.4 in)
1953111.4 mm (4.4 in)
1954111.7 mm (4.4 in)
1955100.5 mm (4.0 in)
1956155.9 mm (6.1 in)
1957167.2 mm (6.6 in)
1958139.9 mm (5.5 in)
1959205.3 mm (8.1 in)
1960230.7 mm (9.1 in)
1961182.2 mm (7.2 in)
1962173.2 mm (6.8 in)
196352.6 mm (2.1 in)
1964158.1 mm (6.2 in)
196584.8 mm (3.3 in)
1966121.2 mm (4.8 in)
1967180.7 mm (7.1 in)
1968166.4 mm (6.6 in)
1969160.5 mm (6.3 in)
1970149.0 mm (5.9 in)
1971153.3 mm (6.0 in)
197294.3 mm (3.7 in)
1973135.6 mm (5.3 in)
1974154.5 mm (6.1 in)
1975217.9 mm (8.6 in)
1976148.0 mm (5.8 in)
1977222.6 mm (8.8 in)
1978235.8 mm (9.3 in)
1979220.5 mm (8.7 in)
1980218.9 mm (8.6 in)
1981118.8 mm (4.7 in)
1982178.4 mm (7.0 in)
1983162.9 mm (6.4 in)
1984173.6 mm (6.8 in)
1985143.4 mm (5.6 in)
1986101.0 mm (4.0 in)
1987154.6 mm (6.1 in)
198883.6 mm (3.3 in)
1989142.8 mm (5.6 in)
199035.2 mm (1.4 in)
199189.0 mm (3.5 in)
199246.3 mm (1.8 in)
199359.9 mm (2.4 in)
199456.4 mm (2.2 in)
199585.2 mm (3.4 in)
199646.4 mm (1.8 in)
1997130.7 mm (5.1 in)
1998112.6 mm (4.4 in)
1999116.0 mm (4.6 in)
2000212.4 mm (8.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Riacho by year The longest dry spell of the year at Riacho, 1947 to 2000. The record is 48 days in 1963, marked on the chart; the median year is 23 days. 0204060195019601970198019902000Record: 48 days in 1963
The longest dry spell of the year at Riacho, 1947 to 2000. The record is 48 days in 1963, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Riacho by year
YearLongest dry spell (CDD)
19475 days
194821 days
194918 days
195028 days
195126 days
195215 days
195336 days
195435 days
195533 days
195620 days
195740 days
195822 days
195923 days
196032 days
196129 days
196218 days
196348 days
196419 days
196513 days
196647 days
196718 days
196823 days
196924 days
197022 days
197123 days
197223 days
197325 days
197430 days
197516 days
197624 days
197722 days
197820 days
197923 days
198014 days
198130 days
198216 days
198323 days
198424 days
198518 days
198616 days
198738 days
198822 days
198919 days
199042 days
199131 days
199220 days
199324 days
199421 days
199529 days
199635 days
199720 days
199822 days
199928 days
200039 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, 1948 to 2000

A day with at least 79.8 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 152.0 mm (6.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Riacho: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years79.8 mm (3.1 in)
5 years107.6 mm (4.2 in)
10 years121.9 mm (4.8 in)
25 years136.3 mm (5.4 in)
50 years144.9 mm (5.7 in)Longer than the 46 years of record
100 years152.0 mm (6.0 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 1948 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: 175.0 mm (6.9 in) in 1980; 142.6 mm (5.6 in) in 1978; 133.2 mm (5.2 in) in 1984.

Download the Data

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