S.Joao Do Piaui Weather Records (BR037657520)

Record envelope, standing records and threshold days for S.Joao Do Piaui (BR037657520), Brazil, with 104 years of record.

Key Facts for S.Joao Do Piaui

S.Joao Do Piaui (BR037657520) is a weather station in Brazil at -8.35 latitude and -42.25 longitude, 235 m (771 ft) above sea level.
The station reports from 1910 to 2013, 104 years of record.
6 records set at S.Joao Do Piaui still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
S.Joao Do Piaui set a monthly record daily precipitation of 5.2 mm (0.20 in) on 27 July 1978.

About the Station

Location: Brazil, -8.35 latitude, -42.25 longitude.
Elevation: 235 m (771 ft).
Period of record: 1910 to 2013, 104 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at S.Joao Do Piaui. 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 S.Joao Do Piaui, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	33.4 C (92.1 F)	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	35.0 C (95.0 F)	23.0 C (73.4 F)	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

6 standing records

6 records at S.Joao Do Piaui still stand. 1996 holds the most, with 4.

Wettest Day of Each Month

Jan: 230.2 mm (9.1 in)

The wettest day on record for each calendar month at S.Joao Do Piaui. The most was 230.2 mm (9.1 in) on 23 January 1934.

Record daily precipitation for each month at S.Joao Do Piaui
Month	Record daily precipitation (mm)	Date
Jan	230.2 mm (9.1 in)	23 January 1934
Feb	134.0 mm (5.3 in)	1 February 1954
Mar	82.0 mm (3.2 in)	20 March 1965
Apr	123.0 mm (4.8 in)	18 April 1967
May	62.0 mm (2.4 in)	4 May 1937
Jun	14.0 mm (0.6 in)	13 June 1912
Jul	5.2 mm (0.20 in)	27 July 1978
Aug	13.3 mm (0.5 in)	15 August 1972
Sep	42.0 mm (1.7 in)	3 September 1939
Oct	68.5 mm (2.7 in)	26 October 1914
Nov	110.0 mm (4.3 in)	29 November 1966
Dec	76.8 mm (3.0 in)	25 December 1977

Period of Record Coverage

1996 to 2013

2 years of record at S.Joao Do Piaui, 1996 to 2013. 2 years have data for under 90 percent of days and are left out of rankings: 1996, 2013.

Latest Records

Latest records at S.Joao Do Piaui
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 1978	S.Joao Do Piaui, BR	monthly rain	5.2 mm (0.20 in)	1.9 mm (0.07 in)	0 years	17 of 100 (Routine)
22 July 1978	S.Joao Do Piaui, BR	monthly rain	3.3 mm (0.13 in)	1.8 mm (0.07 in)	0 years	17 of 100 (Routine)
20 July 1978	S.Joao Do Piaui, BR	monthly rain	1.5 mm (0.06 in)	1.5 mm (0.06 in)	67 years	20 of 100 (Routine)
19 June 1978	S.Joao Do Piaui, BR	daily rain	0.2 mm (0.01 in)	0.2 mm (0.01 in)	67 years	20 of 100 (Routine)
9 June 1978	S.Joao Do Piaui, BR	daily rain	2.0 mm (0.08 in)	2.0 mm (0.08 in)	67 years	20 of 100 (Routine)
25 December 1977	S.Joao Do Piaui, BR	monthly rain	76.8 mm (3.0 in)	1.6 mm (0.06 in)	50 years	32 of 100 (Routine)
13 December 1977	S.Joao Do Piaui, BR	daily rain	47.4 mm (1.9 in)	27.6 mm (1.1 in)	62 years	41 of 100 (Notable)
12 December 1977	S.Joao Do Piaui, BR	daily rain	43.2 mm (1.7 in)	12.2 mm (0.5 in)	58 years	30 of 100 (Routine)
26 April 1977	S.Joao Do Piaui, BR	daily rain	38.0 mm (1.5 in)	12.8 mm (0.5 in)	6 years	13 of 100 (Routine)
31 March 1977	S.Joao Do Piaui, BR	daily rain	76.6 mm (3.0 in)	54.6 mm (2.1 in)	12 years	38 of 100 (Notable)
24 January 1977	S.Joao Do Piaui, BR	daily rain	78.2 mm (3.1 in)	13.2 mm (0.5 in)	3 years	11 of 100 (Routine)
12 March 1975	S.Joao Do Piaui, BR	daily rain (Tie)	60.0 mm (2.4 in)	tie	41 years	4 of 100 (Routine)
19 January 1975	S.Joao Do Piaui, BR	daily rain	63.0 mm (2.5 in)	0.8 mm (0.03 in)	9 years	8 of 100 (Routine)
27 December 1974	S.Joao Do Piaui, BR	daily rain	36.0 mm (1.4 in)	4.9 mm (0.19 in)	40 years	21 of 100 (Routine)
25 December 1974	S.Joao Do Piaui, BR	daily rain	45.0 mm (1.8 in)	11.0 mm (0.4 in)	64 years	31 of 100 (Routine)
2 November 1974	S.Joao Do Piaui, BR	daily rain	31.0 mm (1.2 in)	13.0 mm (0.5 in)	7 years	13 of 100 (Routine)
29 October 1974	S.Joao Do Piaui, BR	daily rain	58.0 mm (2.3 in)	16.0 mm (0.6 in)	53 years	33 of 100 (Routine)
22 April 1974	S.Joao Do Piaui, BR	daily rain	53.0 mm (2.1 in)	42.2 mm (1.7 in)	3 years	27 of 100 (Routine)
20 April 1974	S.Joao Do Piaui, BR	daily rain	60.0 mm (2.4 in)	27.2 mm (1.1 in)	40 years	31 of 100 (Routine)
15 April 1974	S.Joao Do Piaui, BR	daily rain	54.0 mm (2.1 in)	19.9 mm (0.8 in)	8 years	18 of 100 (Routine)

Extremes by Year

1910 to 2013

Yearly extremes at S.Joao Do Piaui: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1996	34.2 C (93.6 F)	2
Coldest night (TNn)	23.0 C (73.4 F)	1996	23.0 C (73.4 F)	1
Wettest day (Rx1day)	230.2 mm (9.1 in)	1934	66.2 mm (2.6 in)	60
Wettest five days (Rx5day)	230.2 mm (9.1 in)	1934	118.5 mm (4.7 in)	59
Longest dry spell (CDD)	252 days	1948	155 days	60

Hottest day (TXx)

The hottest day of the year at S.Joao Do Piaui, 1910 to 2013. The record is 35.0 C (95.0 F) in 1996, marked on the chart; the median year is 34.2 C (93.6 F).

Hottest day (TXx) at S.Joao Do Piaui by year
Year	Hottest day (TXx)
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1948	n/a
1949	n/a
1950	n/a
1952	n/a
1953	n/a
1954	n/a
1956	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1983	n/a
1996	35.0 C (95.0 F)
2013	33.4 C (92.1 F)

Coldest night (TNn)

The coldest night of the year at S.Joao Do Piaui, 1910 to 2013. The record is 23.0 C (73.4 F) in 1996, marked on the chart; the median year is 23.0 C (73.4 F).

Coldest night (TNn) at S.Joao Do Piaui by year
Year	Coldest night (TNn)
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1948	n/a
1949	n/a
1950	n/a
1952	n/a
1953	n/a
1954	n/a
1956	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1983	n/a
1996	23.0 C (73.4 F)
2013	n/a

Wettest day (Rx1day)

The wettest day of the year at S.Joao Do Piaui, 1910 to 2013. The record is 230.2 mm (9.1 in) in 1934, marked on the chart; the median year is 66.2 mm (2.6 in).

Wettest day (Rx1day) at S.Joao Do Piaui by year
Year	Wettest day (Rx1day)
1910	64.0 mm (2.5 in)
1911	50.0 mm (2.0 in)
1912	56.0 mm (2.2 in)
1913	66.9 mm (2.6 in)
1914	68.5 mm (2.7 in)
1915	71.8 mm (2.8 in)
1916	67.0 mm (2.6 in)
1917	42.6 mm (1.7 in)
1918	56.0 mm (2.2 in)
1919	74.0 mm (2.9 in)
1920	66.1 mm (2.6 in)
1921	66.0 mm (2.6 in)
1922	50.0 mm (2.0 in)
1923	66.0 mm (2.6 in)
1924	53.1 mm (2.1 in)
1925	45.0 mm (1.8 in)
1926	69.5 mm (2.7 in)
1927	75.2 mm (3.0 in)
1928	67.5 mm (2.7 in)
1929	75.5 mm (3.0 in)
1930	53.3 mm (2.1 in)
1931	84.0 mm (3.3 in)
1932	57.7 mm (2.3 in)
1933	70.2 mm (2.8 in)
1934	230.2 mm (9.1 in)
1935	55.3 mm (2.2 in)
1936	71.4 mm (2.8 in)
1937	62.0 mm (2.4 in)
1938	52.4 mm (2.1 in)
1939	71.0 mm (2.8 in)
1940	54.0 mm (2.1 in)
1948	62.0 mm (2.4 in)
1949	76.0 mm (3.0 in)
1950	64.0 mm (2.5 in)
1952	48.0 mm (1.9 in)
1953	45.0 mm (1.8 in)
1954	134.0 mm (5.3 in)
1956	0.0 mm (0.00 in)
1959	6.2 mm (0.24 in)
1960	10.4 mm (0.4 in)
1961	25.0 mm (1.0 in)
1962	72.0 mm (2.8 in)
1963	120.0 mm (4.7 in)
1964	91.0 mm (3.6 in)
1965	82.0 mm (3.2 in)
1966	110.0 mm (4.3 in)
1967	123.0 mm (4.8 in)
1968	80.2 mm (3.2 in)
1969	82.0 mm (3.2 in)
1970	100.8 mm (4.0 in)
1971	63.2 mm (2.5 in)
1972	66.3 mm (2.6 in)
1973	72.0 mm (2.8 in)
1974	75.8 mm (3.0 in)
1975	63.0 mm (2.5 in)
1976	82.0 mm (3.2 in)
1977	78.2 mm (3.1 in)
1978	57.2 mm (2.3 in)
1983	35.4 mm (1.4 in)
1996	0.0 mm (0.00 in)
2013	n/a

Wettest five days (Rx5day)

The wettest five days of the year at S.Joao Do Piaui, 1910 to 2013. The record is 230.2 mm (9.1 in) in 1934, marked on the chart; the median year is 118.5 mm (4.7 in).

Wettest five days (Rx5day) at S.Joao Do Piaui by year
Year	Wettest five days (Rx5day)
1910	102.0 mm (4.0 in)
1911	78.0 mm (3.1 in)
1912	125.0 mm (4.9 in)
1913	162.5 mm (6.4 in)
1914	79.9 mm (3.1 in)
1915	134.0 mm (5.3 in)
1916	122.7 mm (4.8 in)
1917	84.8 mm (3.3 in)
1918	100.4 mm (4.0 in)
1919	112.8 mm (4.4 in)
1920	95.9 mm (3.8 in)
1921	111.7 mm (4.4 in)
1922	151.5 mm (6.0 in)
1923	85.6 mm (3.4 in)
1924	120.5 mm (4.7 in)
1925	96.4 mm (3.8 in)
1926	184.3 mm (7.3 in)
1927	144.3 mm (5.7 in)
1928	174.9 mm (6.9 in)
1929	164.1 mm (6.5 in)
1930	88.6 mm (3.5 in)
1931	138.7 mm (5.5 in)
1932	83.4 mm (3.3 in)
1933	118.5 mm (4.7 in)
1934	230.2 mm (9.1 in)
1935	140.4 mm (5.5 in)
1936	130.4 mm (5.1 in)
1937	91.3 mm (3.6 in)
1938	99.0 mm (3.9 in)
1939	104.0 mm (4.1 in)
1940	98.0 mm (3.9 in)
1948	144.0 mm (5.7 in)
1949	213.0 mm (8.4 in)
1950	132.0 mm (5.2 in)
1952	83.0 mm (3.3 in)
1953	86.0 mm (3.4 in)
1954	213.0 mm (8.4 in)
1956	0.0 mm (0.00 in)
1959	10.2 mm (0.4 in)
1960	18.4 mm (0.7 in)
1961	32.0 mm (1.3 in)
1962	176.0 mm (6.9 in)
1963	133.0 mm (5.2 in)
1964	150.0 mm (5.9 in)
1965	118.0 mm (4.6 in)
1966	110.0 mm (4.3 in)
1967	158.2 mm (6.2 in)
1968	203.6 mm (8.0 in)
1969	148.8 mm (5.9 in)
1970	171.1 mm (6.7 in)
1971	131.4 mm (5.2 in)
1972	101.3 mm (4.0 in)
1973	132.2 mm (5.2 in)
1974	151.0 mm (5.9 in)
1975	96.0 mm (3.8 in)
1976	99.0 mm (3.9 in)
1977	161.1 mm (6.3 in)
1978	101.0 mm (4.0 in)
1983	86.0 mm (3.4 in)
1996	n/a
2013	n/a

Longest dry spell (CDD)

The longest dry spell of the year at S.Joao Do Piaui, 1910 to 2013. The record is 252 days in 1948, marked on the chart; the median year is 155 days.

Longest dry spell (CDD) at S.Joao Do Piaui by year
Year	Longest dry spell (CDD)
1910	17 days
1911	90 days
1912	134 days
1913	135 days
1914	194 days
1915	182 days
1916	173 days
1917	134 days
1918	47 days
1919	133 days
1920	117 days
1921	155 days
1922	154 days
1923	82 days
1924	205 days
1925	186 days
1926	189 days
1927	131 days
1928	212 days
1929	134 days
1930	213 days
1931	109 days
1932	179 days
1933	207 days
1934	131 days
1935	157 days
1936	186 days
1937	159 days
1938	213 days
1939	138 days
1940	205 days
1948	252 days
1949	41 days
1950	12 days
1952	197 days
1953	249 days
1954	236 days
1956	31 days
1959	104 days
1960	233 days
1961	250 days
1962	38 days
1963	155 days
1964	201 days
1965	157 days
1966	225 days
1967	197 days
1968	210 days
1969	42 days
1970	230 days
1971	192 days
1972	78 days
1973	30 days
1974	125 days
1975	12 days
1976	11 days
1977	20 days
1978	40 days
1983	31 days
1996	1 day
2013	n/a

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

45 years, 1911 to 1974

A day with at least 63.6 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 187.0 mm (7.4 in) of rain is expected about once in 100 years.

Rainfall return levels at S.Joao Do Piaui: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	63.6 mm (2.5 in)
5 years	88.1 mm (3.5 in)
10 years	107.2 mm (4.2 in)
25 years	135.5 mm (5.3 in)
50 years	159.7 mm (6.3 in)	Longer than the 45 years of record
100 years	187.0 mm (7.4 in)	Longer than the 45 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, 45 years of values from 1911 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: 230.2 mm (9.1 in) in 1934; 134.0 mm (5.3 in) in 1954; 123.0 mm (4.8 in) in 1967.

Download the Data

Data for S.Joao Do Piaui standing records by year: CSV or JSON. Field meanings are on the data page.
Data for S.Joao Do Piaui 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).