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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Major Porto Weather Records (BR001846003)

Record envelope, standing records and threshold days for Major Porto (BR001846003), Brazil, with 33 years of record.

Key Facts for Major Porto

  • Major Porto (BR001846003) is a weather station in Brazil at -18.71 latitude and -46.04 longitude, 672 m (2,205 ft) above sea level.
  • The station reports from 1968 to 2000, 33 years of record.
  • 0 records set at Major Porto still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Major Porto set a daily record precipitation of 47.0 mm (1.9 in) on 30 October 2000.

About the Station

  • Location: Brazil, -18.71 latitude, -46.04 longitude.
  • Elevation: 672 m (2,205 ft).
  • Period of record: 1968 to 2000, 33 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

Which Years Hold Standing Records

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

Wettest Day of Each Month

Jan: 146.6 mm (5.8 in)
Record daily precipitation for each month at Major Porto The wettest day on record for each calendar month at Major Porto. The most was 146.6 mm (5.8 in) on 13 January 1978. 050100150 Jan: 146.6 mm (5.8 in), 13 January 1978 Jan Feb: 96.0 mm (3.8 in), 11 February 1983 Feb Mar: 98.0 mm (3.9 in), 23 March 1982 Mar Apr: 52.6 mm (2.1 in), 3 April 1978 Apr May: 83.0 mm (3.3 in), 30 May 1979 May Jun: 35.1 mm (1.4 in), 6 June 1997 Jun Jul: 51.3 mm (2.0 in), 13 July 1972 Jul Aug: 55.0 mm (2.2 in), 22 August 1986 Aug Sep: 63.0 mm (2.5 in), 30 September 1988 Sep Oct: 87.4 mm (3.4 in), 12 October 1973 Oct Nov: 98.0 mm (3.9 in), 9 November 1981 Nov Dec: 106.4 mm (4.2 in), 26 December 1974 Dec
The wettest day on record for each calendar month at Major Porto. The most was 146.6 mm (5.8 in) on 13 January 1978.
Record daily precipitation for each month at Major Porto
MonthRecord daily precipitation (mm)Date
Jan146.6 mm (5.8 in)13 January 1978
Feb96.0 mm (3.8 in)11 February 1983
Mar98.0 mm (3.9 in)23 March 1982
Apr52.6 mm (2.1 in)3 April 1978
May83.0 mm (3.3 in)30 May 1979
Jun35.1 mm (1.4 in)6 June 1997
Jul51.3 mm (2.0 in)13 July 1972
Aug55.0 mm (2.2 in)22 August 1986
Sep63.0 mm (2.5 in)30 September 1988
Oct87.4 mm (3.4 in)12 October 1973
Nov98.0 mm (3.9 in)9 November 1981
Dec106.4 mm (4.2 in)26 December 1974

Latest Records

20
Latest records at Major Porto
DateStationRecordValueBeat old record byOld record stoodSignificance
30 October 2000Major Porto, BRdaily rain47.0 mm (1.9 in)26.9 mm (1.1 in)2 years23 of 100 (Routine)
8 October 2000Major Porto, BRdaily rain20.0 mm (0.8 in)1.7 mm (0.07 in)8 years6 of 100 (Routine)
27 September 2000Major Porto, BRdaily rain30.3 mm (1.2 in)10.5 mm (0.4 in)24 years20 of 100 (Routine)
8 September 2000Major Porto, BRdaily rain8.7 mm (0.34 in)3.7 mm (0.15 in)16 years10 of 100 (Routine)
3 September 2000Major Porto, BRdaily rain22.7 mm (0.9 in)18.4 mm (0.7 in)32 years20 of 100 (Routine)
30 August 2000Major Porto, BRdaily rain18.7 mm (0.7 in)10.2 mm (0.4 in)10 years16 of 100 (Routine)
19 April 2000Major Porto, BRdaily rain8.3 mm (0.33 in)0.3 mm (0.01 in)4 years4 of 100 (Routine)
17 March 2000Major Porto, BRdaily rain44.0 mm (1.7 in)3.7 mm (0.15 in)7 years7 of 100 (Routine)
29 February 2000Major Porto, BRdaily rain (Tie)67.2 mm (2.6 in)tie24 years2 of 100 (Routine)
10 February 2000Major Porto, BRdaily rain71.7 mm (2.8 in)23.8 mm (0.9 in)24 years23 of 100 (Routine)
24 December 1999Major Porto, BRdaily rain48.5 mm (1.9 in)7.2 mm (0.28 in)21 years13 of 100 (Routine)
30 November 1999Major Porto, BRdaily rain45.5 mm (1.8 in)0.3 mm (0.01 in)1 year3 of 100 (Routine)
27 November 1999Major Porto, BRdaily rain54.9 mm (2.2 in)24.9 mm (1.0 in)13 years23 of 100 (Routine)
20 November 1999Major Porto, BRdaily rain46.3 mm (1.8 in)8.3 mm (0.33 in)2 years8 of 100 (Routine)
8 November 1999Major Porto, BRdaily rain28.5 mm (1.1 in)1.5 mm (0.06 in)18 years8 of 100 (Routine)
27 October 1999Major Porto, BRdaily rain58.9 mm (2.3 in)31.3 mm (1.2 in)10 years31 of 100 (Routine)
26 October 1999Major Porto, BRdaily rain47.5 mm (1.9 in)6.1 mm (0.24 in)24 years14 of 100 (Routine)
11 March 1999Major Porto, BRdaily rain48.2 mm (1.9 in)5.6 mm (0.22 in)24 years13 of 100 (Routine)
2 March 1999Major Porto, BRdaily rain47.8 mm (1.9 in)32.7 mm (1.3 in)1 year24 of 100 (Routine)
27 February 1999Major Porto, BRdaily rain24.3 mm (1.0 in)0.3 mm (0.01 in)8 years5 of 100 (Routine)

Extremes by Year

1968 to 2000
Yearly extremes at Major Porto: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)146.6 mm (5.8 in)197871.0 mm (2.8 in)33
Wettest five days (Rx5day)275.0 mm (10.8 in)1981163.4 mm (6.4 in)33
Longest dry spell (CDD)132 days200057 days33

Wettest day (Rx1day)

Wettest day (Rx1day) at Major Porto by year The wettest day of the year at Major Porto, 1968 to 2000. The record is 146.6 mm (5.8 in) in 1978, marked on the chart; the median year is 71.0 mm (2.8 in). 0501001501970198019902000Record: 146.6 mm (5.8 in) in 1978
The wettest day of the year at Major Porto, 1968 to 2000. The record is 146.6 mm (5.8 in) in 1978, marked on the chart; the median year is 71.0 mm (2.8 in).
Wettest day (Rx1day) at Major Porto by year
YearWettest day (Rx1day)
196861.3 mm (2.4 in)
196989.4 mm (3.5 in)
197086.0 mm (3.4 in)
197141.7 mm (1.6 in)
197251.3 mm (2.0 in)
197387.4 mm (3.4 in)
1974106.4 mm (4.2 in)
197553.6 mm (2.1 in)
197670.6 mm (2.8 in)
197769.6 mm (2.7 in)
1978146.6 mm (5.8 in)
197983.0 mm (3.3 in)
198067.2 mm (2.6 in)
198198.0 mm (3.9 in)
198298.0 mm (3.9 in)
198396.0 mm (3.8 in)
198483.0 mm (3.3 in)
198575.0 mm (3.0 in)
198670.0 mm (2.8 in)
198771.2 mm (2.8 in)
198867.2 mm (2.6 in)
198971.0 mm (2.8 in)
199039.0 mm (1.5 in)
199190.0 mm (3.5 in)
199295.0 mm (3.7 in)
199360.1 mm (2.4 in)
199470.0 mm (2.8 in)
199549.0 mm (1.9 in)
199643.2 mm (1.7 in)
199750.2 mm (2.0 in)
199879.3 mm (3.1 in)
199958.9 mm (2.3 in)
200071.7 mm (2.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Major Porto by year The wettest five days of the year at Major Porto, 1968 to 2000. The record is 275.0 mm (10.8 in) in 1981, marked on the chart; the median year is 163.4 mm (6.4 in). 501001502002503001970198019902000Record: 275.0 mm (10.8 in) in 1981
The wettest five days of the year at Major Porto, 1968 to 2000. The record is 275.0 mm (10.8 in) in 1981, marked on the chart; the median year is 163.4 mm (6.4 in).
Wettest five days (Rx5day) at Major Porto by year
YearWettest five days (Rx5day)
1968105.0 mm (4.1 in)
1969173.8 mm (6.8 in)
1970199.3 mm (7.8 in)
1971126.8 mm (5.0 in)
1972111.0 mm (4.4 in)
1973160.0 mm (6.3 in)
1974181.3 mm (7.1 in)
1975132.2 mm (5.2 in)
1976150.0 mm (5.9 in)
1977123.3 mm (4.9 in)
1978264.6 mm (10.4 in)
1979169.0 mm (6.7 in)
1980134.2 mm (5.3 in)
1981275.0 mm (10.8 in)
1982246.6 mm (9.7 in)
1983169.6 mm (6.7 in)
1984112.0 mm (4.4 in)
1985199.0 mm (7.8 in)
1986172.0 mm (6.8 in)
1987165.9 mm (6.5 in)
1988122.8 mm (4.8 in)
1989204.0 mm (8.0 in)
199078.3 mm (3.1 in)
1991162.0 mm (6.4 in)
1992241.8 mm (9.5 in)
1993162.3 mm (6.4 in)
1994227.2 mm (8.9 in)
1995153.0 mm (6.0 in)
1996163.4 mm (6.4 in)
1997133.2 mm (5.2 in)
1998169.3 mm (6.7 in)
1999165.2 mm (6.5 in)
2000152.9 mm (6.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Major Porto by year The longest dry spell of the year at Major Porto, 1968 to 2000. The record is 132 days in 2000, marked on the chart; the median year is 57 days. 0501001501970198019902000Record: 132 days in 2000
The longest dry spell of the year at Major Porto, 1968 to 2000. The record is 132 days in 2000, marked on the chart; the median year is 57 days.
Longest dry spell (CDD) at Major Porto by year
YearLongest dry spell (CDD)
196831 days
196947 days
197037 days
197141 days
197248 days
197348 days
197449 days
197557 days
197631 days
197784 days
197849 days
197948 days
198046 days
198160 days
1982118 days
198354 days
1984109 days
1985103 days
198653 days
198731 days
1988116 days
198938 days
199053 days
1991121 days
1992121 days
199370 days
1994101 days
1995114 days
199679 days
199791 days
199867 days
199988 days
2000132 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

31 years, 1969 to 2000

A day with at least 71.7 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 135.9 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Major Porto: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years71.7 mm (2.8 in)
5 years91.7 mm (3.6 in)
10 years103.7 mm (4.1 in)
25 years117.6 mm (4.6 in)
50 years127.1 mm (5.0 in)Longer than the 31 years of record
100 years135.9 mm (5.4 in)Longer than the 31 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, 31 years of values from 1969 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: 146.6 mm (5.8 in) in 1978; 106.4 mm (4.2 in) in 1974; 98.0 mm (3.9 in) in 1981.

Download the Data

  • Data for Major Porto standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Major Porto 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).