Swaelfontein Weather Records (SF001672640)

Record envelope, standing records and threshold days for Swaelfontein (SF001672640), South Africa, with 70 years of record.

Key Facts for Swaelfontein

Swaelfontein (SF001672640) is a weather station in South Africa at -30.90 latitude and 22.65 longitude, 1,273 m (4,177 ft) above sea level.
The station reports from 1903 to 1972, 70 years of record.
0 records set at Swaelfontein still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Swaelfontein set a daily record precipitation of 5.7 mm (0.22 in) on 6 January 1972.

About the Station

Location: South Africa, -30.90 latitude, 22.65 longitude.
Elevation: 1,273 m (4,177 ft).
Period of record: 1903 to 1972, 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 Swaelfontein. 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 Swaelfontein, 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 Swaelfontein still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Swaelfontein between 21 February 1957 and 28 March 1961. Each dot is a new record.

When Swaelfontein set new all-time records
Date	Kind	Detail
1957-02-21	Record daily precipitation	Record daily precipitation 68.0 mm (2.7 in)
1961-03-28	Record daily precipitation	Record daily precipitation 137.0 mm (5.4 in)

Wettest Day of Each Month

Mar: 137.0 mm (5.4 in)

The wettest day on record for each calendar month at Swaelfontein. The most was 137.0 mm (5.4 in) on 28 March 1961.

Record daily precipitation for each month at Swaelfontein
Month	Record daily precipitation (mm)	Date
Jan	63.5 mm (2.5 in)	30 January 1920
Feb	68.0 mm (2.7 in)	21 February 1957
Mar	137.0 mm (5.4 in)	28 March 1961
Apr	47.5 mm (1.9 in)	9 April 1961
May	36.3 mm (1.4 in)	27 May 1914
Jun	29.0 mm (1.1 in)	1 June 1955
Jul	38.1 mm (1.5 in)	11 July 1945
Aug	88.9 mm (3.5 in)	27 August 1970
Sep	31.0 mm (1.2 in)	30 September 1929
Oct	31.0 mm (1.2 in)	20 October 1957
Nov	52.0 mm (2.0 in)	15 November 1953
Dec	62.2 mm (2.4 in)	3 December 1942

Latest Records

Latest records at Swaelfontein
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 January 1972	Swaelfontein, ZA	daily rain	5.7 mm (0.22 in)	0.6 mm (0.02 in)	30 years	16 of 100 (Routine)
27 August 1970	Swaelfontein, ZA	monthly rain	88.9 mm (3.5 in)	65.9 mm (2.6 in)	10 years	59 of 100 (Notable)
1 September 1968	Swaelfontein, ZA	daily rain	6.5 mm (0.26 in)	6.5 mm (0.26 in)	64 years	20 of 100 (Routine)
12 June 1968	Swaelfontein, ZA	daily rain	4.5 mm (0.18 in)	0.7 mm (0.03 in)	58 years	20 of 100 (Routine)
16 May 1968	Swaelfontein, ZA	daily rain	31.0 mm (1.2 in)	7.9 mm (0.31 in)	62 years	35 of 100 (Notable)
3 November 1967	Swaelfontein, ZA	daily rain	22.0 mm (0.9 in)	8.0 mm (0.31 in)	2 years	15 of 100 (Routine)
30 October 1967	Swaelfontein, ZA	daily rain	13.0 mm (0.5 in)	10.5 mm (0.4 in)	0 years	20 of 100 (Routine)
26 August 1967	Swaelfontein, ZA	daily rain	3.0 mm (0.12 in)	3.0 mm (0.12 in)	62 years	20 of 100 (Routine)
18 April 1967	Swaelfontein, ZA	daily rain	36.0 mm (1.4 in)	21.4 mm (0.8 in)	12 years	34 of 100 (Routine)
17 April 1967	Swaelfontein, ZA	daily rain	33.1 mm (1.3 in)	3.9 mm (0.15 in)	28 years	18 of 100 (Routine)
5 March 1967	Swaelfontein, ZA	daily rain	15.0 mm (0.6 in)	2.0 mm (0.08 in)	12 years	10 of 100 (Routine)
10 November 1966	Swaelfontein, ZA	daily rain	10.5 mm (0.4 in)	1.6 mm (0.06 in)	32 years	16 of 100 (Routine)
30 October 1966	Swaelfontein, ZA	daily rain	2.5 mm (0.10 in)	2.5 mm (0.10 in)	63 years	20 of 100 (Routine)
21 September 1966	Swaelfontein, ZA	daily rain	7.0 mm (0.28 in)	3.4 mm (0.13 in)	36 years	20 of 100 (Routine)
5 June 1966	Swaelfontein, ZA	daily rain	13.0 mm (0.5 in)	11.5 mm (0.5 in)	36 years	20 of 100 (Routine)
31 January 1966	Swaelfontein, ZA	daily rain	30.5 mm (1.2 in)	18.8 mm (0.7 in)	24 years	31 of 100 (Routine)
29 January 1966	Swaelfontein, ZA	daily rain	18.0 mm (0.7 in)	2.0 mm (0.08 in)	24 years	14 of 100 (Routine)
1 October 1965	Swaelfontein, ZA	daily rain	8.0 mm (0.31 in)	5.7 mm (0.22 in)	34 years	20 of 100 (Routine)
15 April 1965	Swaelfontein, ZA	daily rain	34.0 mm (1.3 in)	25.6 mm (1.0 in)	51 years	51 of 100 (Notable)
27 December 1964	Swaelfontein, ZA	daily rain	22.0 mm (0.9 in)	19.5 mm (0.8 in)	31 years	20 of 100 (Routine)

Extremes by Year

1903 to 1972

Yearly extremes at Swaelfontein: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	137.0 mm (5.4 in)	1961	31.0 mm (1.2 in)	67
Wettest five days (Rx5day)	155.0 mm (6.1 in)	1961	45.9 mm (1.8 in)	67
Longest dry spell (CDD)	225 days	1969	80 days	67

Wettest day (Rx1day)

The wettest day of the year at Swaelfontein, 1903 to 1972. The record is 137.0 mm (5.4 in) in 1961, marked on the chart; the median year is 31.0 mm (1.2 in).

Wettest day (Rx1day) at Swaelfontein by year
Year	Wettest day (Rx1day)
1903	1.5 mm (0.06 in)
1904	24.1 mm (0.9 in)
1905	16.5 mm (0.6 in)
1906	27.9 mm (1.1 in)
1907	28.4 mm (1.1 in)
1908	24.4 mm (1.0 in)
1909	32.8 mm (1.3 in)
1910	24.6 mm (1.0 in)
1911	32.0 mm (1.3 in)
1912	33.5 mm (1.3 in)
1913	43.2 mm (1.7 in)
1914	36.3 mm (1.4 in)
1915	14.0 mm (0.6 in)
1916	21.3 mm (0.8 in)
1917	34.3 mm (1.4 in)
1918	14.2 mm (0.6 in)
1919	0.0 mm (0.00 in)
1920	63.5 mm (2.5 in)
1921	34.3 mm (1.4 in)
1922	5.1 mm (0.20 in)
1923	38.1 mm (1.5 in)
1924	11.4 mm (0.4 in)
1927	15.2 mm (0.6 in)
1928	36.6 mm (1.4 in)
1929	31.0 mm (1.2 in)
1930	17.0 mm (0.7 in)
1931	24.1 mm (0.9 in)
1933	18.8 mm (0.7 in)
1934	43.9 mm (1.7 in)
1935	32.3 mm (1.3 in)
1936	47.0 mm (1.9 in)
1937	46.2 mm (1.8 in)
1938	29.2 mm (1.1 in)
1939	45.0 mm (1.8 in)
1940	33.5 mm (1.3 in)
1941	31.2 mm (1.2 in)
1942	62.2 mm (2.4 in)
1943	28.2 mm (1.1 in)
1944	29.2 mm (1.1 in)
1945	38.1 mm (1.5 in)
1946	38.1 mm (1.5 in)
1947	32.5 mm (1.3 in)
1948	21.8 mm (0.9 in)
1949	21.3 mm (0.8 in)
1950	46.0 mm (1.8 in)
1951	16.0 mm (0.6 in)
1952	38.4 mm (1.5 in)
1953	52.0 mm (2.0 in)
1954	56.0 mm (2.2 in)
1955	54.0 mm (2.1 in)
1956	36.2 mm (1.4 in)
1957	68.0 mm (2.7 in)
1958	22.0 mm (0.9 in)
1959	20.0 mm (0.8 in)
1960	23.0 mm (0.9 in)
1961	137.0 mm (5.4 in)
1962	25.0 mm (1.0 in)
1963	43.0 mm (1.7 in)
1964	22.0 mm (0.9 in)
1965	34.0 mm (1.3 in)
1966	30.5 mm (1.2 in)
1967	36.0 mm (1.4 in)
1968	31.0 mm (1.2 in)
1969	25.2 mm (1.0 in)
1970	88.9 mm (3.5 in)
1971	2.5 mm (0.10 in)
1972	5.7 mm (0.22 in)

Wettest five days (Rx5day)

The wettest five days of the year at Swaelfontein, 1903 to 1972. The record is 155.0 mm (6.1 in) in 1961, marked on the chart; the median year is 45.9 mm (1.8 in).

Wettest five days (Rx5day) at Swaelfontein by year
Year	Wettest five days (Rx5day)
1903	1.5 mm (0.06 in)
1904	31.7 mm (1.2 in)
1905	36.1 mm (1.4 in)
1906	50.3 mm (2.0 in)
1907	36.8 mm (1.4 in)
1908	49.8 mm (2.0 in)
1909	63.0 mm (2.5 in)
1910	35.3 mm (1.4 in)
1911	84.3 mm (3.3 in)
1912	40.1 mm (1.6 in)
1913	68.8 mm (2.7 in)
1914	49.5 mm (1.9 in)
1915	24.6 mm (1.0 in)
1916	27.4 mm (1.1 in)
1917	59.4 mm (2.3 in)
1918	27.5 mm (1.1 in)
1919	0.0 mm (0.00 in)
1920	63.5 mm (2.5 in)
1921	63.5 mm (2.5 in)
1922	5.1 mm (0.20 in)
1923	38.1 mm (1.5 in)
1924	17.5 mm (0.7 in)
1927	20.5 mm (0.8 in)
1928	70.9 mm (2.8 in)
1929	31.0 mm (1.2 in)
1930	17.0 mm (0.7 in)
1931	27.4 mm (1.1 in)
1933	22.6 mm (0.9 in)
1934	46.4 mm (1.8 in)
1935	44.5 mm (1.8 in)
1936	47.0 mm (1.9 in)
1937	47.0 mm (1.9 in)
1938	44.4 mm (1.7 in)
1939	51.8 mm (2.0 in)
1940	48.2 mm (1.9 in)
1941	44.5 mm (1.8 in)
1942	62.2 mm (2.4 in)
1943	53.6 mm (2.1 in)
1944	45.9 mm (1.8 in)
1945	48.0 mm (1.9 in)
1946	48.3 mm (1.9 in)
1947	32.7 mm (1.3 in)
1948	53.3 mm (2.1 in)
1949	37.1 mm (1.5 in)
1950	79.8 mm (3.1 in)
1951	31.2 mm (1.2 in)
1952	61.3 mm (2.4 in)
1953	54.5 mm (2.1 in)
1954	72.5 mm (2.9 in)
1955	54.0 mm (2.1 in)
1956	41.2 mm (1.6 in)
1957	68.0 mm (2.7 in)
1958	57.5 mm (2.3 in)
1959	22.0 mm (0.9 in)
1960	23.0 mm (0.9 in)
1961	155.0 mm (6.1 in)
1962	25.0 mm (1.0 in)
1963	54.5 mm (2.1 in)
1964	57.5 mm (2.3 in)
1965	37.5 mm (1.5 in)
1966	52.0 mm (2.0 in)
1967	69.1 mm (2.7 in)
1968	31.0 mm (1.2 in)
1969	25.2 mm (1.0 in)
1970	88.9 mm (3.5 in)
1971	2.7 mm (0.11 in)
1972	5.7 mm (0.22 in)

Longest dry spell (CDD)

The longest dry spell of the year at Swaelfontein, 1903 to 1972. The record is 225 days in 1969, marked on the chart; the median year is 80 days.

Longest dry spell (CDD) at Swaelfontein by year
Year	Longest dry spell (CDD)
1903	39 days
1904	60 days
1905	57 days
1906	43 days
1907	59 days
1908	83 days
1909	92 days
1910	69 days
1911	58 days
1912	170 days
1913	83 days
1914	119 days
1915	118 days
1916	102 days
1917	110 days
1918	112 days
1919	31 days
1920	29 days
1921	39 days
1922	183 days
1923	105 days
1924	24 days
1927	82 days
1928	66 days
1929	48 days
1930	64 days
1931	52 days
1933	64 days
1934	132 days
1935	56 days
1936	55 days
1937	163 days
1938	78 days
1939	70 days
1940	86 days
1941	64 days
1942	60 days
1943	76 days
1944	103 days
1945	144 days
1946	49 days
1947	115 days
1948	85 days
1949	87 days
1950	49 days
1951	111 days
1952	74 days
1953	63 days
1954	107 days
1955	82 days
1956	117 days
1957	51 days
1958	110 days
1959	83 days
1960	59 days
1961	65 days
1962	106 days
1963	68 days
1964	61 days
1965	91 days
1966	123 days
1967	76 days
1968	80 days
1969	225 days
1970	83 days
1971	84 days
1972	221 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

56 years, 1904 to 1971

A day with at least 30.4 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 103.9 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Swaelfontein: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.4 mm (1.2 in)
5 years	46.0 mm (1.8 in)
10 years	57.7 mm (2.3 in)
25 years	74.5 mm (2.9 in)
50 years	88.5 mm (3.5 in)
100 years	103.9 mm (4.1 in)	Longer than the 56 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, 56 years of values from 1904 to 1971.

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: 137.0 mm (5.4 in) in 1961; 88.9 mm (3.5 in) in 1970; 68.0 mm (2.7 in) in 1957.

Download the Data

Data for Swaelfontein standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Swaelfontein 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