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

Rio Formoso Weather Records (BR038793720)

Record envelope, standing records and threshold days for Rio Formoso (BR038793720), Brazil, with 42 years of record.

Key Facts for Rio Formoso

  • Rio Formoso (BR038793720) is a weather station in Brazil at -8.67 latitude and -35.15 longitude, 39 m (128 ft) above sea level.
  • The station reports from 1934 to 1975, 42 years of record.
  • 0 records set at Rio Formoso still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Rio Formoso set a daily record precipitation of 75.0 mm (3.0 in) on 15 May 1975.

About the Station

  • Location: Brazil, -8.67 latitude, -35.15 longitude.
  • Elevation: 39 m (128 ft).
  • Period of record: 1934 to 1975, 42 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

Wettest Day of Each Month

May: 170.7 mm (6.7 in)
Record daily precipitation for each month at Rio Formoso The wettest day on record for each calendar month at Rio Formoso. The most was 170.7 mm (6.7 in) on 9 May 1947. 050100150200 Jan: 99.5 mm (3.9 in), 31 January 1943 Jan Feb: 127.7 mm (5.0 in), 22 February 1934 Feb Mar: 124.6 mm (4.9 in), 6 March 1935 Mar Apr: 160.3 mm (6.3 in), 21 April 1938 Apr May: 170.7 mm (6.7 in), 9 May 1947 May Jun: 148.7 mm (5.9 in), 22 June 1935 Jun Jul: 150.5 mm (5.9 in), 18 July 1970 Jul Aug: 95.5 mm (3.8 in), 10 August 1970 Aug Sep: 98.6 mm (3.9 in), 3 September 1943 Sep Oct: 80.1 mm (3.2 in), 22 October 1971 Oct Nov: 90.9 mm (3.6 in), 20 November 1966 Nov Dec: 84.0 mm (3.3 in), 25 December 1963 Dec
The wettest day on record for each calendar month at Rio Formoso. The most was 170.7 mm (6.7 in) on 9 May 1947.
Record daily precipitation for each month at Rio Formoso
MonthRecord daily precipitation (mm)Date
Jan99.5 mm (3.9 in)31 January 1943
Feb127.7 mm (5.0 in)22 February 1934
Mar124.6 mm (4.9 in)6 March 1935
Apr160.3 mm (6.3 in)21 April 1938
May170.7 mm (6.7 in)9 May 1947
Jun148.7 mm (5.9 in)22 June 1935
Jul150.5 mm (5.9 in)18 July 1970
Aug95.5 mm (3.8 in)10 August 1970
Sep98.6 mm (3.9 in)3 September 1943
Oct80.1 mm (3.2 in)22 October 1971
Nov90.9 mm (3.6 in)20 November 1966
Dec84.0 mm (3.3 in)25 December 1963

Latest Records

20
Latest records at Rio Formoso
DateStationRecordValueBeat old record byOld record stoodSignificance
15 May 1975Rio Formoso, BRdaily rain75.0 mm (3.0 in)23.5 mm (0.9 in)37 years26 of 100 (Routine)
4 December 1974Rio Formoso, BRdaily rain50.2 mm (2.0 in)43.1 mm (1.7 in)19 years49 of 100 (Notable)
16 September 1974Rio Formoso, BRdaily rain60.2 mm (2.4 in)38.1 mm (1.5 in)15 years48 of 100 (Notable)
15 September 1974Rio Formoso, BRdaily rain30.1 mm (1.2 in)9.0 mm (0.35 in)15 years17 of 100 (Routine)
11 September 1974Rio Formoso, BRdaily rain40.1 mm (1.6 in)18.0 mm (0.7 in)16 years28 of 100 (Routine)
15 July 1974Rio Formoso, BRdaily rain96.3 mm (3.8 in)71.1 mm (2.8 in)23 years50 of 100 (Notable)
14 July 1974Rio Formoso, BRdaily rain58.3 mm (2.3 in)18.0 mm (0.7 in)8 years18 of 100 (Routine)
6 July 1974Rio Formoso, BRdaily rain96.5 mm (3.8 in)16.3 mm (0.6 in)12 years18 of 100 (Routine)
29 June 1974Rio Formoso, BRdaily rain70.5 mm (2.8 in)14.2 mm (0.6 in)25 years18 of 100 (Routine)
21 June 1974Rio Formoso, BRdaily rain99.3 mm (3.9 in)28.9 mm (1.1 in)37 years30 of 100 (Routine)
19 June 1974Rio Formoso, BRdaily rain96.2 mm (3.8 in)50.9 mm (2.0 in)37 years42 of 100 (Notable)
23 May 1974Rio Formoso, BRdaily rain95.3 mm (3.8 in)35.0 mm (1.4 in)27 years29 of 100 (Routine)
12 May 1974Rio Formoso, BRdaily rain85.2 mm (3.4 in)3.0 mm (0.12 in)16 years9 of 100 (Routine)
18 March 1974Rio Formoso, BRdaily rain70.2 mm (2.8 in)24.5 mm (1.0 in)35 years29 of 100 (Routine)
8 March 1974Rio Formoso, BRdaily rain50.3 mm (2.0 in)0.2 mm (0.01 in)16 years9 of 100 (Routine)
28 February 1974Rio Formoso, BRdaily rain60.5 mm (2.4 in)1.0 mm (0.04 in)4 years5 of 100 (Routine)
7 February 1974Rio Formoso, BRdaily rain60.2 mm (2.4 in)27.9 mm (1.1 in)36 years36 of 100 (Notable)
5 February 1974Rio Formoso, BRdaily rain30.5 mm (1.2 in)14.4 mm (0.6 in)23 years21 of 100 (Routine)
4 February 1974Rio Formoso, BRdaily rain41.2 mm (1.6 in)28.1 mm (1.1 in)8 years27 of 100 (Routine)
3 February 1974Rio Formoso, BRdaily rain50.1 mm (2.0 in)29.9 mm (1.2 in)10 years29 of 100 (Routine)

Extremes by Year

1934 to 1975
Yearly extremes at Rio Formoso: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)170.7 mm (6.7 in)194791.5 mm (3.6 in)42
Wettest five days (Rx5day)444.2 mm (17.5 in)1970213.7 mm (8.4 in)42
Longest dry spell (CDD)36 days196318 days42

Wettest day (Rx1day)

Wettest day (Rx1day) at Rio Formoso by year The wettest day of the year at Rio Formoso, 1934 to 1975. The record is 170.7 mm (6.7 in) in 1947, marked on the chart; the median year is 91.5 mm (3.6 in). 0501001502001940195019601970Record: 170.7 mm (6.7 in) in 1947
The wettest day of the year at Rio Formoso, 1934 to 1975. The record is 170.7 mm (6.7 in) in 1947, marked on the chart; the median year is 91.5 mm (3.6 in).
Wettest day (Rx1day) at Rio Formoso by year
YearWettest day (Rx1day)
1934127.7 mm (5.0 in)
1935148.7 mm (5.9 in)
1936105.4 mm (4.1 in)
1937134.2 mm (5.3 in)
1938160.3 mm (6.3 in)
193958.5 mm (2.3 in)
194074.2 mm (2.9 in)
194180.3 mm (3.2 in)
194290.5 mm (3.6 in)
194399.5 mm (3.9 in)
1944136.6 mm (5.4 in)
194561.2 mm (2.4 in)
194665.2 mm (2.6 in)
1947170.7 mm (6.7 in)
194889.4 mm (3.5 in)
194980.5 mm (3.2 in)
195092.4 mm (3.6 in)
195178.4 mm (3.1 in)
195270.5 mm (2.8 in)
195386.2 mm (3.4 in)
195490.2 mm (3.6 in)
195567.1 mm (2.6 in)
195681.4 mm (3.2 in)
195779.1 mm (3.1 in)
195898.1 mm (3.9 in)
195998.3 mm (3.9 in)
196070.2 mm (2.8 in)
196184.2 mm (3.3 in)
196295.2 mm (3.7 in)
1963128.0 mm (5.0 in)
196498.6 mm (3.9 in)
196542.1 mm (1.7 in)
1966160.5 mm (6.3 in)
196795.3 mm (3.8 in)
196880.1 mm (3.2 in)
196972.1 mm (2.8 in)
1970150.5 mm (5.9 in)
197198.5 mm (3.9 in)
197295.2 mm (3.7 in)
197398.1 mm (3.9 in)
197499.3 mm (3.9 in)
197575.0 mm (3.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Rio Formoso by year The wettest five days of the year at Rio Formoso, 1934 to 1975. The record is 444.2 mm (17.5 in) in 1970, marked on the chart; the median year is 213.7 mm (8.4 in). 01002003004005001940195019601970Record: 444.2 mm (17.5 in) in 1970
The wettest five days of the year at Rio Formoso, 1934 to 1975. The record is 444.2 mm (17.5 in) in 1970, marked on the chart; the median year is 213.7 mm (8.4 in).
Wettest five days (Rx5day) at Rio Formoso by year
YearWettest five days (Rx5day)
1934307.1 mm (12.1 in)
1935287.5 mm (11.3 in)
1936256.4 mm (10.1 in)
1937164.3 mm (6.5 in)
1938367.2 mm (14.5 in)
1939145.7 mm (5.7 in)
1940305.9 mm (12.0 in)
1941152.0 mm (6.0 in)
1942177.9 mm (7.0 in)
1943157.6 mm (6.2 in)
1944351.2 mm (13.8 in)
1945105.9 mm (4.2 in)
1946118.5 mm (4.7 in)
1947207.2 mm (8.2 in)
1948185.1 mm (7.3 in)
1949228.0 mm (9.0 in)
1950212.4 mm (8.4 in)
1951239.2 mm (9.4 in)
1952159.1 mm (6.3 in)
1953185.9 mm (7.3 in)
1954268.3 mm (10.6 in)
1955148.7 mm (5.9 in)
1956239.3 mm (9.4 in)
1957251.9 mm (9.9 in)
1958360.9 mm (14.2 in)
1959281.2 mm (11.1 in)
1960176.6 mm (7.0 in)
1961219.0 mm (8.6 in)
1962215.8 mm (8.5 in)
1963209.4 mm (8.2 in)
1964207.2 mm (8.2 in)
196575.3 mm (3.0 in)
1966295.6 mm (11.6 in)
1967194.2 mm (7.6 in)
1968182.0 mm (7.2 in)
1969180.9 mm (7.1 in)
1970444.2 mm (17.5 in)
1971215.0 mm (8.5 in)
1972328.3 mm (12.9 in)
1973268.8 mm (10.6 in)
1974299.4 mm (11.8 in)
1975146.6 mm (5.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Rio Formoso by year The longest dry spell of the year at Rio Formoso, 1934 to 1975. The record is 36 days in 1963, marked on the chart; the median year is 18 days. 0102030401940195019601970Record: 36 days in 1963
The longest dry spell of the year at Rio Formoso, 1934 to 1975. The record is 36 days in 1963, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Rio Formoso by year
YearLongest dry spell (CDD)
193418 days
193528 days
193615 days
193719 days
193814 days
19397 days
194015 days
194111 days
194225 days
194321 days
194415 days
194522 days
194622 days
194716 days
194815 days
194922 days
195015 days
195119 days
195220 days
195318 days
195418 days
195512 days
195611 days
195721 days
195813 days
195914 days
196017 days
19618 days
196223 days
196336 days
196420 days
196519 days
196611 days
196714 days
196826 days
196912 days
197016 days
197113 days
197225 days
197314 days
197432 days
197523 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

41 years, 1934 to 1974

A day with at least 91.5 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 200.2 mm (7.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Rio Formoso: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years91.5 mm (3.6 in)
5 years118.4 mm (4.7 in)
10 years137.1 mm (5.4 in)
25 years161.7 mm (6.4 in)
50 years180.7 mm (7.1 in)Longer than the 41 years of record
100 years200.2 mm (7.9 in)Longer than the 41 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, 41 years of values from 1934 to 1974.

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: 170.7 mm (6.7 in) in 1947; 160.5 mm (6.3 in) in 1966; 160.3 mm (6.3 in) in 1938.

Download the Data

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