Modderrivier (Pol) Weather Records (SF002581820)

Record envelope, standing records and threshold days for Modderrivier (Pol) (SF002581820), South Africa, with 84 years of record.

Key Facts for Modderrivier (Pol)

Modderrivier (Pol) (SF002581820) is a weather station in South Africa at -29.03 latitude and 24.63 longitude, 1,114 m (3,655 ft) above sea level.
The station reports from 1914 to 1997, 84 years of record.
0 records set at Modderrivier (Pol) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Modderrivier (Pol) set a daily record precipitation of 8.0 mm (0.31 in) on 27 July 1997.

About the Station

Location: South Africa, -29.03 latitude, 24.63 longitude.
Elevation: 1,114 m (3,655 ft).
Period of record: 1914 to 1997, 84 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 Modderrivier (Pol). 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 Modderrivier (Pol), 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	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	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

0 standing records

0 records at Modderrivier (Pol) still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Modderrivier (Pol) between 13 March 1948 and 6 April 1973. Each dot is a new record.

When Modderrivier (Pol) set new all-time records
Date	Kind	Detail
1948-03-13	Record daily precipitation	Record daily precipitation 74.2 mm (2.9 in)
1973-04-06	Record daily precipitation	Record daily precipitation 135.0 mm (5.3 in)

Wettest Day of Each Month

Apr: 135.0 mm (5.3 in)

The wettest day on record for each calendar month at Modderrivier (Pol). The most was 135.0 mm (5.3 in) on 6 April 1973.

Record daily precipitation for each month at Modderrivier (Pol)
Month	Record daily precipitation (mm)	Date
Jan	65.3 mm (2.6 in)	30 January 1974
Feb	80.0 mm (3.1 in)	28 February 1974
Mar	91.5 mm (3.6 in)	1 March 1974
Apr	135.0 mm (5.3 in)	6 April 1973
May	43.0 mm (1.7 in)	30 May 1967
Jun	37.6 mm (1.5 in)	14 June 1944
Jul	34.0 mm (1.3 in)	14 July 1949
Aug	31.0 mm (1.2 in)	21 August 1981
Sep	61.0 mm (2.4 in)	1 September 1943
Oct	73.0 mm (2.9 in)	7 October 1979
Nov	95.0 mm (3.7 in)	18 November 1991
Dec	75.0 mm (3.0 in)	29 December 1996

Latest Records

Latest records at Modderrivier (Pol)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 1997	Modderrivier (Pol), ZA	daily rain	8.0 mm (0.31 in)	8.0 mm (0.31 in)	82 years	20 of 100 (Routine)
27 May 1997	Modderrivier (Pol), ZA	daily rain	3.0 mm (0.12 in)	3.0 mm (0.12 in)	82 years	20 of 100 (Routine)
25 May 1997	Modderrivier (Pol), ZA	daily rain	22.4 mm (0.9 in)	20.4 mm (0.8 in)	16 years	20 of 100 (Routine)
6 May 1997	Modderrivier (Pol), ZA	daily rain	19.4 mm (0.8 in)	6.4 mm (0.25 in)	76 years	20 of 100 (Routine)
1 April 1997	Modderrivier (Pol), ZA	daily rain	20.0 mm (0.8 in)	0.5 mm (0.02 in)	44 years	20 of 100 (Routine)
9 February 1997	Modderrivier (Pol), ZA	daily rain	33.5 mm (1.3 in)	1.5 mm (0.06 in)	21 years	15 of 100 (Routine)
29 December 1996	Modderrivier (Pol), ZA	monthly rain	75.0 mm (3.0 in)	13.3 mm (0.5 in)	72 years	50 of 100 (Notable)
4 August 1996	Modderrivier (Pol), ZA	daily rain	14.0 mm (0.6 in)	8.0 mm (0.31 in)	23 years	20 of 100 (Routine)
25 July 1996	Modderrivier (Pol), ZA	daily rain	16.6 mm (0.7 in)	1.9 mm (0.07 in)	69 years	20 of 100 (Routine)
22 July 1996	Modderrivier (Pol), ZA	daily rain	3.5 mm (0.14 in)	1.0 mm (0.04 in)	44 years	20 of 100 (Routine)
12 April 1996	Modderrivier (Pol), ZA	daily rain	16.5 mm (0.6 in)	0.5 mm (0.02 in)	29 years	16 of 100 (Routine)
17 December 1995	Modderrivier (Pol), ZA	daily rain	19.0 mm (0.7 in)	4.5 mm (0.18 in)	20 years	18 of 100 (Routine)
13 December 1995	Modderrivier (Pol), ZA	daily rain	40.5 mm (1.6 in)	8.5 mm (0.33 in)	61 years	33 of 100 (Routine)
21 November 1995	Modderrivier (Pol), ZA	daily rain	13.0 mm (0.5 in)	1.1 mm (0.04 in)	72 years	20 of 100 (Routine)
1 November 1995	Modderrivier (Pol), ZA	daily rain	13.0 mm (0.5 in)	3.5 mm (0.14 in)	28 years	19 of 100 (Routine)
28 March 1995	Modderrivier (Pol), ZA	daily rain	33.0 mm (1.3 in)	12.7 mm (0.5 in)	57 years	35 of 100 (Notable)
13 January 1995	Modderrivier (Pol), ZA	daily rain	44.0 mm (1.7 in)	19.5 mm (0.8 in)	23 years	30 of 100 (Routine)
3 March 1994	Modderrivier (Pol), ZA	daily rain	29.0 mm (1.1 in)	9.5 mm (0.37 in)	20 years	21 of 100 (Routine)
3 February 1994	Modderrivier (Pol), ZA	daily rain	10.0 mm (0.4 in)	0.3 mm (0.01 in)	60 years	20 of 100 (Routine)
12 January 1994	Modderrivier (Pol), ZA	daily rain	61.5 mm (2.4 in)	24.7 mm (1.0 in)	76 years	50 of 100 (Notable)

Extremes by Year

1914 to 1997

Yearly extremes at Modderrivier (Pol): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	135.0 mm (5.3 in)	1973	40.0 mm (1.6 in)	79
Wettest five days (Rx5day)	245.0 mm (9.6 in)	1974	61.5 mm (2.4 in)	79
Longest dry spell (CDD)	220 days	1933	97 days	79

Wettest day (Rx1day)

The wettest day of the year at Modderrivier (Pol), 1914 to 1997. The record is 135.0 mm (5.3 in) in 1973, marked on the chart; the median year is 40.0 mm (1.6 in).

Wettest day (Rx1day) at Modderrivier (Pol) by year
Year	Wettest day (Rx1day)
1914	39.4 mm (1.6 in)
1915	39.4 mm (1.6 in)
1916	36.3 mm (1.4 in)
1917	45.7 mm (1.8 in)
1918	48.3 mm (1.9 in)
1919	31.5 mm (1.2 in)
1920	44.5 mm (1.8 in)
1921	40.1 mm (1.6 in)
1922	19.3 mm (0.8 in)
1923	33.8 mm (1.3 in)
1924	61.7 mm (2.4 in)
1925	45.7 mm (1.8 in)
1926	33.0 mm (1.3 in)
1927	46.0 mm (1.8 in)
1928	63.5 mm (2.5 in)
1929	46.5 mm (1.8 in)
1930	38.9 mm (1.5 in)
1931	40.1 mm (1.6 in)
1932	37.3 mm (1.5 in)
1933	32.0 mm (1.3 in)
1934	52.1 mm (2.1 in)
1935	38.1 mm (1.5 in)
1936	24.9 mm (1.0 in)
1937	34.3 mm (1.4 in)
1938	33.8 mm (1.3 in)
1939	34.0 mm (1.3 in)
1940	24.4 mm (1.0 in)
1941	47.0 mm (1.9 in)
1942	41.7 mm (1.6 in)
1943	61.0 mm (2.4 in)
1944	37.6 mm (1.5 in)
1945	35.6 mm (1.4 in)
1946	23.1 mm (0.9 in)
1947	61.0 mm (2.4 in)
1948	74.2 mm (2.9 in)
1949	34.0 mm (1.3 in)
1950	34.5 mm (1.4 in)
1951	38.6 mm (1.5 in)
1952	48.5 mm (1.9 in)
1953	49.0 mm (1.9 in)
1954	48.0 mm (1.9 in)
1955	45.5 mm (1.8 in)
1960	23.0 mm (0.9 in)
1961	47.0 mm (1.9 in)
1962	38.5 mm (1.5 in)
1963	39.0 mm (1.5 in)
1964	26.0 mm (1.0 in)
1965	10.0 mm (0.4 in)
1966	55.0 mm (2.2 in)
1967	43.0 mm (1.7 in)
1968	41.0 mm (1.6 in)
1969	65.5 mm (2.6 in)
1970	40.0 mm (1.6 in)
1971	34.3 mm (1.4 in)
1972	24.5 mm (1.0 in)
1973	135.0 mm (5.3 in)
1974	91.5 mm (3.6 in)
1975	59.0 mm (2.3 in)
1976	60.1 mm (2.4 in)
1977	29.5 mm (1.2 in)
1978	41.0 mm (1.6 in)
1979	73.0 mm (2.9 in)
1980	62.0 mm (2.4 in)
1981	40.5 mm (1.6 in)
1982	25.0 mm (1.0 in)
1983	38.0 mm (1.5 in)
1984	40.0 mm (1.6 in)
1985	30.0 mm (1.2 in)
1986	21.0 mm (0.8 in)
1987	27.5 mm (1.1 in)
1989	43.5 mm (1.7 in)
1990	39.0 mm (1.5 in)
1991	95.0 mm (3.7 in)
1992	53.0 mm (2.1 in)
1993	34.4 mm (1.4 in)
1994	61.5 mm (2.4 in)
1995	44.0 mm (1.7 in)
1996	75.0 mm (3.0 in)
1997	33.5 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Modderrivier (Pol), 1914 to 1997. The record is 245.0 mm (9.6 in) in 1974, marked on the chart; the median year is 61.5 mm (2.4 in).

Wettest five days (Rx5day) at Modderrivier (Pol) by year
Year	Wettest five days (Rx5day)
1914	39.4 mm (1.6 in)
1915	66.1 mm (2.6 in)
1916	72.4 mm (2.9 in)
1917	86.3 mm (3.4 in)
1918	61.0 mm (2.4 in)
1919	60.5 mm (2.4 in)
1920	78.1 mm (3.1 in)
1921	47.5 mm (1.9 in)
1922	42.9 mm (1.7 in)
1923	59.6 mm (2.3 in)
1924	80.5 mm (3.2 in)
1925	89.4 mm (3.5 in)
1926	36.8 mm (1.4 in)
1927	81.0 mm (3.2 in)
1928	63.5 mm (2.5 in)
1929	57.4 mm (2.3 in)
1930	38.9 mm (1.5 in)
1931	87.1 mm (3.4 in)
1932	52.3 mm (2.1 in)
1933	44.5 mm (1.8 in)
1934	75.7 mm (3.0 in)
1935	63.5 mm (2.5 in)
1936	56.6 mm (2.2 in)
1937	34.3 mm (1.4 in)
1938	46.2 mm (1.8 in)
1939	58.9 mm (2.3 in)
1940	26.7 mm (1.1 in)
1941	56.9 mm (2.2 in)
1942	43.2 mm (1.7 in)
1943	92.1 mm (3.6 in)
1944	66.3 mm (2.6 in)
1945	35.6 mm (1.4 in)
1946	39.3 mm (1.5 in)
1947	64.0 mm (2.5 in)
1948	103.9 mm (4.1 in)
1949	40.9 mm (1.6 in)
1950	83.0 mm (3.3 in)
1951	46.2 mm (1.8 in)
1952	70.3 mm (2.8 in)
1953	61.8 mm (2.4 in)
1954	61.5 mm (2.4 in)
1955	102.8 mm (4.0 in)
1960	38.5 mm (1.5 in)
1961	85.5 mm (3.4 in)
1962	62.5 mm (2.5 in)
1963	64.0 mm (2.5 in)
1964	36.5 mm (1.4 in)
1965	12.9 mm (0.5 in)
1966	86.4 mm (3.4 in)
1967	60.5 mm (2.4 in)
1968	48.5 mm (1.9 in)
1969	132.0 mm (5.2 in)
1970	46.5 mm (1.8 in)
1971	50.0 mm (2.0 in)
1972	30.5 mm (1.2 in)
1973	157.0 mm (6.2 in)
1974	245.0 mm (9.6 in)
1975	101.5 mm (4.0 in)
1976	80.0 mm (3.1 in)
1977	49.2 mm (1.9 in)
1978	59.6 mm (2.3 in)
1979	81.0 mm (3.2 in)
1980	99.5 mm (3.9 in)
1981	100.0 mm (3.9 in)
1982	42.0 mm (1.7 in)
1983	70.0 mm (2.8 in)
1984	57.1 mm (2.2 in)
1985	63.0 mm (2.5 in)
1986	40.3 mm (1.6 in)
1987	34.4 mm (1.4 in)
1989	43.5 mm (1.7 in)
1990	39.0 mm (1.5 in)
1991	97.0 mm (3.8 in)
1992	78.1 mm (3.1 in)
1993	38.3 mm (1.5 in)
1994	85.5 mm (3.4 in)
1995	65.5 mm (2.6 in)
1996	75.0 mm (3.0 in)
1997	75.0 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Modderrivier (Pol), 1914 to 1997. The record is 220 days in 1933, marked on the chart; the median year is 97 days.

Longest dry spell (CDD) at Modderrivier (Pol) by year
Year	Longest dry spell (CDD)
1914	17 days
1915	68 days
1916	68 days
1917	76 days
1918	63 days
1919	144 days
1920	98 days
1921	181 days
1922	103 days
1923	83 days
1924	143 days
1925	99 days
1926	148 days
1927	85 days
1928	77 days
1929	32 days
1930	128 days
1931	52 days
1932	120 days
1933	220 days
1934	131 days
1935	127 days
1936	162 days
1937	163 days
1938	67 days
1939	56 days
1940	114 days
1941	111 days
1942	92 days
1943	51 days
1944	96 days
1945	97 days
1946	65 days
1947	43 days
1948	148 days
1949	37 days
1950	53 days
1951	132 days
1952	34 days
1953	134 days
1954	143 days
1955	22 days
1960	41 days
1961	73 days
1962	179 days
1963	89 days
1964	117 days
1965	212 days
1966	126 days
1967	152 days
1968	160 days
1969	153 days
1970	85 days
1971	144 days
1972	149 days
1973	76 days
1974	84 days
1975	115 days
1976	66 days
1977	58 days
1978	86 days
1979	45 days
1980	122 days
1981	79 days
1982	77 days
1983	57 days
1984	115 days
1985	134 days
1986	117 days
1987	94 days
1989	101 days
1990	143 days
1991	97 days
1992	189 days
1993	72 days
1994	121 days
1995	121 days
1996	94 days
1997	45 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

70 years, 1915 to 1997

A day with at least 40.3 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 112.0 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Modderrivier (Pol): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	40.3 mm (1.6 in)
5 years	55.8 mm (2.2 in)
10 years	67.3 mm (2.6 in)
25 years	83.7 mm (3.3 in)
50 years	97.2 mm (3.8 in)
100 years	112.0 mm (4.4 in)	Longer than the 70 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, 70 years of values from 1915 to 1997.

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: 135.0 mm (5.3 in) in 1973; 95.0 mm (3.7 in) in 1991; 91.5 mm (3.6 in) in 1974.

Download the Data

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

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	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	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

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	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	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