Sandfontein (Irr) Weather Records (SF005125520)

Record envelope, standing records and threshold days for Sandfontein (Irr) (SF005125520), South Africa, with 70 years of record.

Key Facts for Sandfontein (Irr)

Sandfontein (Irr) (SF005125520) is a weather station in South Africa at -25.70 latitude and 27.80 longitude, 1,143 m (3,750 ft) above sea level.
The station reports from 1928 to 1997, 70 years of record.
0 records set at Sandfontein (Irr) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Sandfontein (Irr) set a daily record precipitation of 20.0 mm (0.8 in) on 9 September 1997.

About the Station

Location: South Africa, -25.70 latitude, 27.80 longitude.
Elevation: 1,143 m (3,750 ft).
Period of record: 1928 to 1997, 70 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 Sandfontein (Irr). 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 Sandfontein (Irr), 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 Sandfontein (Irr) still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Sandfontein (Irr) between 25 January 1975 and 25 January 1975. Each dot is a new record.

Wettest Day of Each Month

Jan: 182.0 mm (7.2 in)

The wettest day on record for each calendar month at Sandfontein (Irr). The most was 182.0 mm (7.2 in) on 25 January 1975.

Record daily precipitation for each month at Sandfontein (Irr)
Month	Record daily precipitation (mm)	Date
Jan	182.0 mm (7.2 in)	25 January 1975
Feb	120.4 mm (4.7 in)	10 February 1946
Mar	95.0 mm (3.7 in)	5 March 1997
Apr	63.7 mm (2.5 in)	7 April 1963
May	57.7 mm (2.3 in)	15 May 1951
Jun	43.9 mm (1.7 in)	17 June 1940
Jul	44.2 mm (1.7 in)	3 July 1943
Aug	33.5 mm (1.3 in)	24 August 1957
Sep	50.0 mm (2.0 in)	7 September 1971
Oct	78.0 mm (3.1 in)	28 October 1986
Nov	145.0 mm (5.7 in)	5 November 1989
Dec	121.9 mm (4.8 in)	20 December 1935

Latest Records

Latest records at Sandfontein (Irr)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 September 1997	Sandfontein (Irr), ZA	daily rain	20.0 mm (0.8 in)	12.8 mm (0.5 in)	16 years	20 of 100 (Routine)
27 July 1997	Sandfontein (Irr), ZA	daily rain	7.3 mm (0.29 in)	6.3 mm (0.25 in)	67 years	20 of 100 (Routine)
24 May 1997	Sandfontein (Irr), ZA	daily rain	24.5 mm (1.0 in)	9.0 mm (0.35 in)	63 years	20 of 100 (Routine)
6 March 1997	Sandfontein (Irr), ZA	daily rain	51.5 mm (2.0 in)	22.3 mm (0.9 in)	36 years	34 of 100 (Routine)
5 March 1997	Sandfontein (Irr), ZA	monthly rain	95.0 mm (3.7 in)	8.5 mm (0.33 in)	29 years	31 of 100 (Routine)
4 March 1997	Sandfontein (Irr), ZA	daily rain	54.0 mm (2.1 in)	7.3 mm (0.29 in)	8 years	14 of 100 (Routine)
16 January 1997	Sandfontein (Irr), ZA	daily rain	71.0 mm (2.8 in)	39.5 mm (1.6 in)	55 years	50 of 100 (Notable)
10 January 1997	Sandfontein (Irr), ZA	daily rain	38.3 mm (1.5 in)	8.3 mm (0.33 in)	43 years	24 of 100 (Routine)
18 August 1996	Sandfontein (Irr), ZA	daily rain	2.5 mm (0.10 in)	2.5 mm (0.10 in)	68 years	20 of 100 (Routine)
26 May 1996	Sandfontein (Irr), ZA	daily rain	2.5 mm (0.10 in)	0.5 mm (0.02 in)	40 years	18 of 100 (Routine)
16 May 1996	Sandfontein (Irr), ZA	daily rain	3.0 mm (0.12 in)	1.7 mm (0.07 in)	48 years	20 of 100 (Routine)
1 April 1996	Sandfontein (Irr), ZA	daily rain	11.5 mm (0.5 in)	0.6 mm (0.02 in)	67 years	20 of 100 (Routine)
13 February 1996	Sandfontein (Irr), ZA	daily rain	76.0 mm (3.0 in)	20.1 mm (0.8 in)	65 years	39 of 100 (Notable)
11 February 1996	Sandfontein (Irr), ZA	daily rain (Tie)	35.0 mm (1.4 in)	tie	40 years	4 of 100 (Routine)
18 January 1996	Sandfontein (Irr), ZA	daily rain	61.5 mm (2.4 in)	14.3 mm (0.6 in)	20 years	21 of 100 (Routine)
2 May 1995	Sandfontein (Irr), ZA	daily rain	22.0 mm (0.9 in)	10.1 mm (0.4 in)	44 years	20 of 100 (Routine)
21 April 1995	Sandfontein (Irr), ZA	daily rain	11.4 mm (0.4 in)	1.7 mm (0.07 in)	48 years	20 of 100 (Routine)
25 March 1995	Sandfontein (Irr), ZA	daily rain	56.0 mm (2.2 in)	31.4 mm (1.2 in)	64 years	50 of 100 (Notable)
5 August 1994	Sandfontein (Irr), ZA	daily rain	2.3 mm (0.09 in)	2.3 mm (0.09 in)	65 years	20 of 100 (Routine)
8 April 1994	Sandfontein (Irr), ZA	daily rain	39.4 mm (1.6 in)	15.2 mm (0.6 in)	16 years	25 of 100 (Routine)

Extremes by Year

1928 to 1997

Yearly extremes at Sandfontein (Irr): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	182.0 mm (7.2 in)	1975	57.6 mm (2.3 in)	70
Wettest five days (Rx5day)	352.2 mm (13.9 in)	1975	93.3 mm (3.7 in)	70
Longest dry spell (CDD)	168 days	1941	97 days	70

Wettest day (Rx1day)

The wettest day of the year at Sandfontein (Irr), 1928 to 1997. The record is 182.0 mm (7.2 in) in 1975, marked on the chart; the median year is 57.6 mm (2.3 in).

Wettest day (Rx1day) at Sandfontein (Irr) by year
Year	Wettest day (Rx1day)
1928	35.6 mm (1.4 in)
1929	50.8 mm (2.0 in)
1930	55.9 mm (2.2 in)
1931	53.8 mm (2.1 in)
1932	43.2 mm (1.7 in)
1933	65.3 mm (2.6 in)
1934	57.9 mm (2.3 in)
1935	121.9 mm (4.8 in)
1936	77.0 mm (3.0 in)
1937	57.4 mm (2.3 in)
1938	53.6 mm (2.1 in)
1939	60.7 mm (2.4 in)
1940	48.0 mm (1.9 in)
1941	46.7 mm (1.8 in)
1942	90.9 mm (3.6 in)
1943	44.2 mm (1.7 in)
1944	116.8 mm (4.6 in)
1945	46.2 mm (1.8 in)
1946	120.4 mm (4.7 in)
1947	58.4 mm (2.3 in)
1948	61.0 mm (2.4 in)
1949	70.1 mm (2.8 in)
1950	46.0 mm (1.8 in)
1951	57.7 mm (2.3 in)
1952	69.1 mm (2.7 in)
1953	80.0 mm (3.1 in)
1954	46.0 mm (1.8 in)
1955	58.0 mm (2.3 in)
1956	42.0 mm (1.7 in)
1957	46.5 mm (1.8 in)
1958	74.5 mm (2.9 in)
1959	55.0 mm (2.2 in)
1960	60.0 mm (2.4 in)
1961	50.0 mm (2.0 in)
1962	45.5 mm (1.8 in)
1963	63.7 mm (2.5 in)
1964	45.5 mm (1.8 in)
1965	33.0 mm (1.3 in)
1966	67.8 mm (2.7 in)
1967	86.5 mm (3.4 in)
1968	45.5 mm (1.8 in)
1969	85.0 mm (3.3 in)
1970	32.5 mm (1.3 in)
1971	50.0 mm (2.0 in)
1972	80.0 mm (3.1 in)
1973	60.4 mm (2.4 in)
1974	79.0 mm (3.1 in)
1975	182.0 mm (7.2 in)
1976	59.5 mm (2.3 in)
1977	70.4 mm (2.8 in)
1978	61.2 mm (2.4 in)
1979	66.0 mm (2.6 in)
1980	45.5 mm (1.8 in)
1981	55.0 mm (2.2 in)
1982	43.0 mm (1.7 in)
1983	40.3 mm (1.6 in)
1984	51.0 mm (2.0 in)
1985	74.5 mm (2.9 in)
1986	78.0 mm (3.1 in)
1987	42.0 mm (1.7 in)
1988	46.7 mm (1.8 in)
1989	145.0 mm (5.7 in)
1990	48.5 mm (1.9 in)
1991	55.2 mm (2.2 in)
1992	36.4 mm (1.4 in)
1993	37.2 mm (1.5 in)
1994	62.0 mm (2.4 in)
1995	56.0 mm (2.2 in)
1996	76.0 mm (3.0 in)
1997	95.0 mm (3.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sandfontein (Irr), 1928 to 1997. The record is 352.2 mm (13.9 in) in 1975, marked on the chart; the median year is 93.3 mm (3.7 in).

Wettest five days (Rx5day) at Sandfontein (Irr) by year
Year	Wettest five days (Rx5day)
1928	88.7 mm (3.5 in)
1929	74.7 mm (2.9 in)
1930	95.5 mm (3.8 in)
1931	73.4 mm (2.9 in)
1932	53.1 mm (2.1 in)
1933	98.3 mm (3.9 in)
1934	102.6 mm (4.0 in)
1935	121.9 mm (4.8 in)
1936	115.4 mm (4.5 in)
1937	164.9 mm (6.5 in)
1938	86.9 mm (3.4 in)
1939	151.7 mm (6.0 in)
1940	122.9 mm (4.8 in)
1941	77.6 mm (3.1 in)
1942	143.0 mm (5.6 in)
1943	83.2 mm (3.3 in)
1944	218.7 mm (8.6 in)
1945	137.6 mm (5.4 in)
1946	157.7 mm (6.2 in)
1947	116.6 mm (4.6 in)
1948	85.6 mm (3.4 in)
1949	114.1 mm (4.5 in)
1950	99.8 mm (3.9 in)
1951	94.7 mm (3.7 in)
1952	113.6 mm (4.5 in)
1953	90.6 mm (3.6 in)
1954	73.0 mm (2.9 in)
1955	110.5 mm (4.4 in)
1956	86.0 mm (3.4 in)
1957	71.0 mm (2.8 in)
1958	89.6 mm (3.5 in)
1959	77.5 mm (3.1 in)
1960	101.5 mm (4.0 in)
1961	84.3 mm (3.3 in)
1962	63.7 mm (2.5 in)
1963	103.7 mm (4.1 in)
1964	62.9 mm (2.5 in)
1965	49.5 mm (1.9 in)
1966	76.5 mm (3.0 in)
1967	119.0 mm (4.7 in)
1968	55.5 mm (2.2 in)
1969	119.0 mm (4.7 in)
1970	53.5 mm (2.1 in)
1971	87.5 mm (3.4 in)
1972	123.8 mm (4.9 in)
1973	72.9 mm (2.9 in)
1974	113.0 mm (4.4 in)
1975	352.2 mm (13.9 in)
1976	91.8 mm (3.6 in)
1977	126.8 mm (5.0 in)
1978	125.8 mm (5.0 in)
1979	142.0 mm (5.6 in)
1980	65.5 mm (2.6 in)
1981	65.0 mm (2.6 in)
1982	67.6 mm (2.7 in)
1983	58.5 mm (2.3 in)
1984	51.0 mm (2.0 in)
1985	135.0 mm (5.3 in)
1986	108.6 mm (4.3 in)
1987	80.0 mm (3.1 in)
1988	76.1 mm (3.0 in)
1989	172.6 mm (6.8 in)
1990	72.6 mm (2.9 in)
1991	103.5 mm (4.1 in)
1992	87.8 mm (3.5 in)
1993	66.2 mm (2.6 in)
1994	99.9 mm (3.9 in)
1995	88.5 mm (3.5 in)
1996	149.5 mm (5.9 in)
1997	216.5 mm (8.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Sandfontein (Irr), 1928 to 1997. The record is 168 days in 1941, marked on the chart; the median year is 97 days.

Longest dry spell (CDD) at Sandfontein (Irr) by year
Year	Longest dry spell (CDD)
1928	40 days
1929	41 days
1930	38 days
1931	70 days
1932	92 days
1933	71 days
1934	42 days
1935	102 days
1936	110 days
1937	149 days
1938	48 days
1939	35 days
1940	67 days
1941	168 days
1942	68 days
1943	55 days
1944	95 days
1945	141 days
1946	129 days
1947	146 days
1948	124 days
1949	107 days
1950	97 days
1951	101 days
1952	64 days
1953	143 days
1954	112 days
1955	83 days
1956	106 days
1957	54 days
1958	98 days
1959	61 days
1960	84 days
1961	106 days
1962	158 days
1963	100 days
1964	88 days
1965	91 days
1966	103 days
1967	74 days
1968	46 days
1969	78 days
1970	122 days
1971	127 days
1972	113 days
1973	113 days
1974	115 days
1975	99 days
1976	146 days
1977	97 days
1978	124 days
1979	45 days
1980	152 days
1981	75 days
1982	75 days
1983	95 days
1984	91 days
1985	121 days
1986	85 days
1987	122 days
1988	69 days
1989	102 days
1990	79 days
1991	91 days
1992	120 days
1993	138 days
1994	106 days
1995	115 days
1996	68 days
1997	63 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

65 years, 1929 to 1997

A day with at least 56.5 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 172.3 mm (6.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Sandfontein (Irr): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	56.5 mm (2.2 in)
5 years	76.3 mm (3.0 in)
10 years	93.0 mm (3.7 in)
25 years	119.4 mm (4.7 in)
50 years	143.5 mm (5.6 in)
100 years	172.3 mm (6.8 in)	Longer than the 65 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, 65 years of values from 1929 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: 182.0 mm (7.2 in) in 1975; 145.0 mm (5.7 in) in 1989; 121.9 mm (4.8 in) in 1935.

Download the Data

Data for Sandfontein (Irr) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sandfontein (Irr) 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 2026-10-13 (13 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