Witwater (Bos) Weather Records (SF005558780)

Record envelope, standing records and threshold days for Witwater (Bos) (SF005558780), South Africa, with 65 years of record.

Key Facts for Witwater (Bos)

Witwater (Bos) (SF005558780) is a weather station in South Africa at -25.13 latitude and 31.00 longitude, 1,042 m (3,419 ft) above sea level.
The station reports from 1929 to 1993, 65 years of record.
0 records set at Witwater (Bos) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Witwater (Bos) set a daily record precipitation of 161.5 mm (6.4 in) on 24 January 1993.

About the Station

Location: South Africa, -25.13 latitude, 31.00 longitude.
Elevation: 1,042 m (3,419 ft).
Period of record: 1929 to 1993, 65 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 Witwater (Bos). 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 Witwater (Bos), 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 Witwater (Bos) still stand.

Wettest Day of Each Month

Feb: 346.7 mm (13.6 in)

The wettest day on record for each calendar month at Witwater (Bos). The most was 346.7 mm (13.6 in) on 4 February 1939.

Record daily precipitation for each month at Witwater (Bos)
Month	Record daily precipitation (mm)	Date
Jan	209.0 mm (8.2 in)	13 January 1974
Feb	346.7 mm (13.6 in)	4 February 1939
Mar	117.0 mm (4.6 in)	20 March 1987
Apr	132.6 mm (5.2 in)	6 April 1941
May	48.0 mm (1.9 in)	17 May 1988
Jun	56.0 mm (2.2 in)	20 June 1961
Jul	67.5 mm (2.7 in)	11 July 1984
Aug	51.1 mm (2.0 in)	31 August 1951
Sep	76.0 mm (3.0 in)	13 September 1984
Oct	63.0 mm (2.5 in)	3 October 1972
Nov	90.2 mm (3.6 in)	18 November 1933
Dec	197.5 mm (7.8 in)	29 December 1955

Latest Records

Latest records at Witwater (Bos)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 January 1993	Witwater (Bos), ZA	daily rain	161.5 mm (6.4 in)	105.5 mm (4.2 in)	12 years	49 of 100 (Notable)
13 November 1992	Witwater (Bos), ZA	daily rain	41.5 mm (1.6 in)	9.5 mm (0.37 in)	39 years	23 of 100 (Routine)
1 October 1992	Witwater (Bos), ZA	daily rain	43.5 mm (1.7 in)	10.5 mm (0.4 in)	23 years	22 of 100 (Routine)
4 August 1992	Witwater (Bos), ZA	daily rain	12.8 mm (0.5 in)	0.4 mm (0.02 in)	63 years	20 of 100 (Routine)
14 November 1991	Witwater (Bos), ZA	daily rain	42.5 mm (1.7 in)	2.5 mm (0.10 in)	22 years	13 of 100 (Routine)
18 June 1991	Witwater (Bos), ZA	daily rain	26.0 mm (1.0 in)	19.9 mm (0.8 in)	50 years	39 of 100 (Notable)
25 May 1991	Witwater (Bos), ZA	daily rain (Tie)	2.0 mm (0.08 in)	tie	33 years	4 of 100 (Routine)
14 February 1991	Witwater (Bos), ZA	daily rain	37.4 mm (1.5 in)	6.9 mm (0.27 in)	1 year	8 of 100 (Routine)
9 January 1991	Witwater (Bos), ZA	daily rain	36.5 mm (1.4 in)	11.1 mm (0.4 in)	40 years	23 of 100 (Routine)
25 December 1990	Witwater (Bos), ZA	daily rain	45.0 mm (1.8 in)	9.7 mm (0.38 in)	60 years	28 of 100 (Routine)
5 December 1990	Witwater (Bos), ZA	daily rain	41.8 mm (1.6 in)	3.5 mm (0.14 in)	3 years	7 of 100 (Routine)
8 October 1990	Witwater (Bos), ZA	daily rain	14.0 mm (0.6 in)	1.3 mm (0.05 in)	60 years	20 of 100 (Routine)
7 October 1990	Witwater (Bos), ZA	daily rain	36.5 mm (1.4 in)	17.4 mm (0.7 in)	44 years	37 of 100 (Notable)
4 September 1990	Witwater (Bos), ZA	daily rain	6.0 mm (0.24 in)	1.4 mm (0.06 in)	49 years	20 of 100 (Routine)
29 July 1990	Witwater (Bos), ZA	daily rain	6.5 mm (0.26 in)	2.5 mm (0.10 in)	16 years	13 of 100 (Routine)
20 July 1990	Witwater (Bos), ZA	daily rain	49.0 mm (1.9 in)	39.3 mm (1.5 in)	56 years	57 of 100 (Notable)
3 May 1990	Witwater (Bos), ZA	daily rain	25.0 mm (1.0 in)	8.2 mm (0.32 in)	60 years	33 of 100 (Routine)
25 March 1990	Witwater (Bos), ZA	daily rain	19.0 mm (0.7 in)	4.5 mm (0.18 in)	56 years	20 of 100 (Routine)
10 December 1989	Witwater (Bos), ZA	daily rain	40.0 mm (1.6 in)	12.0 mm (0.5 in)	28 years	19 of 100 (Routine)
19 November 1989	Witwater (Bos), ZA	daily rain	24.5 mm (1.0 in)	2.8 mm (0.11 in)	8 years	9 of 100 (Routine)

Extremes by Year

1929 to 1993

Yearly extremes at Witwater (Bos): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	346.7 mm (13.6 in)	1939	85.1 mm (3.4 in)	65
Wettest five days (Rx5day)	471.2 mm (18.6 in)	1939	148.0 mm (5.8 in)	65
Longest dry spell (CDD)	112 days	1992	50 days	65

Wettest day (Rx1day)

The wettest day of the year at Witwater (Bos), 1929 to 1993. The record is 346.7 mm (13.6 in) in 1939, marked on the chart; the median year is 85.1 mm (3.4 in).

Wettest day (Rx1day) at Witwater (Bos) by year
Year	Wettest day (Rx1day)
1929	60.5 mm (2.4 in)
1930	59.2 mm (2.3 in)
1931	53.3 mm (2.1 in)
1932	67.8 mm (2.7 in)
1933	98.0 mm (3.9 in)
1934	80.5 mm (3.2 in)
1935	71.1 mm (2.8 in)
1936	63.5 mm (2.5 in)
1937	168.9 mm (6.6 in)
1938	174.0 mm (6.9 in)
1939	346.7 mm (13.6 in)
1940	88.9 mm (3.5 in)
1941	132.6 mm (5.2 in)
1942	64.8 mm (2.6 in)
1943	103.4 mm (4.1 in)
1944	85.1 mm (3.4 in)
1945	57.7 mm (2.3 in)
1946	178.1 mm (7.0 in)
1947	85.1 mm (3.4 in)
1948	51.6 mm (2.0 in)
1949	86.1 mm (3.4 in)
1950	53.3 mm (2.1 in)
1951	90.9 mm (3.6 in)
1952	76.2 mm (3.0 in)
1953	69.5 mm (2.7 in)
1954	94.5 mm (3.7 in)
1955	197.5 mm (7.8 in)
1956	169.5 mm (6.7 in)
1957	144.0 mm (5.7 in)
1958	175.0 mm (6.9 in)
1959	101.0 mm (4.0 in)
1960	150.0 mm (5.9 in)
1961	92.0 mm (3.6 in)
1962	93.0 mm (3.7 in)
1963	63.0 mm (2.5 in)
1964	65.0 mm (2.6 in)
1965	72.5 mm (2.9 in)
1966	82.0 mm (3.2 in)
1967	102.5 mm (4.0 in)
1968	40.3 mm (1.6 in)
1969	106.5 mm (4.2 in)
1970	55.0 mm (2.2 in)
1971	92.4 mm (3.6 in)
1972	114.5 mm (4.5 in)
1973	72.4 mm (2.9 in)
1974	209.0 mm (8.2 in)
1975	78.0 mm (3.1 in)
1976	105.5 mm (4.2 in)
1977	80.0 mm (3.1 in)
1978	64.5 mm (2.5 in)
1979	84.5 mm (3.3 in)
1980	145.5 mm (5.7 in)
1981	67.0 mm (2.6 in)
1982	94.0 mm (3.7 in)
1983	89.0 mm (3.5 in)
1984	76.0 mm (3.0 in)
1985	254.5 mm (10.0 in)
1986	71.5 mm (2.8 in)
1987	117.0 mm (4.6 in)
1988	100.0 mm (3.9 in)
1989	82.0 mm (3.2 in)
1990	49.0 mm (1.9 in)
1991	72.0 mm (2.8 in)
1992	70.0 mm (2.8 in)
1993	161.5 mm (6.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Witwater (Bos), 1929 to 1993. The record is 471.2 mm (18.6 in) in 1939, marked on the chart; the median year is 148.0 mm (5.8 in).

Wettest five days (Rx5day) at Witwater (Bos) by year
Year	Wettest five days (Rx5day)
1929	108.0 mm (4.3 in)
1930	134.3 mm (5.3 in)
1931	106.6 mm (4.2 in)
1932	118.9 mm (4.7 in)
1933	219.9 mm (8.7 in)
1934	104.6 mm (4.1 in)
1935	151.1 mm (5.9 in)
1936	118.9 mm (4.7 in)
1937	385.6 mm (15.2 in)
1938	335.8 mm (13.2 in)
1939	471.2 mm (18.6 in)
1940	128.2 mm (5.0 in)
1941	218.5 mm (8.6 in)
1942	107.4 mm (4.2 in)
1943	186.2 mm (7.3 in)
1944	97.0 mm (3.8 in)
1945	101.6 mm (4.0 in)
1946	277.2 mm (10.9 in)
1947	154.9 mm (6.1 in)
1948	100.3 mm (3.9 in)
1949	197.9 mm (7.8 in)
1950	88.9 mm (3.5 in)
1951	104.5 mm (4.1 in)
1952	156.6 mm (6.2 in)
1953	148.0 mm (5.8 in)
1954	124.0 mm (4.9 in)
1955	273.1 mm (10.8 in)
1956	300.0 mm (11.8 in)
1957	171.3 mm (6.7 in)
1958	268.5 mm (10.6 in)
1959	135.0 mm (5.3 in)
1960	274.5 mm (10.8 in)
1961	110.7 mm (4.4 in)
1962	120.0 mm (4.7 in)
1963	91.5 mm (3.6 in)
1964	102.9 mm (4.1 in)
1965	94.5 mm (3.7 in)
1966	149.5 mm (5.9 in)
1967	139.1 mm (5.5 in)
1968	80.0 mm (3.1 in)
1969	126.5 mm (5.0 in)
1970	85.3 mm (3.4 in)
1971	136.0 mm (5.4 in)
1972	238.7 mm (9.4 in)
1973	186.0 mm (7.3 in)
1974	230.5 mm (9.1 in)
1975	208.0 mm (8.2 in)
1976	308.5 mm (12.1 in)
1977	203.5 mm (8.0 in)
1978	138.6 mm (5.5 in)
1979	168.6 mm (6.6 in)
1980	150.5 mm (5.9 in)
1981	154.5 mm (6.1 in)
1982	94.0 mm (3.7 in)
1983	96.0 mm (3.8 in)
1984	104.9 mm (4.1 in)
1985	466.5 mm (18.4 in)
1986	91.5 mm (3.6 in)
1987	185.5 mm (7.3 in)
1988	247.6 mm (9.7 in)
1989	241.0 mm (9.5 in)
1990	73.0 mm (2.9 in)
1991	101.3 mm (4.0 in)
1992	148.0 mm (5.8 in)
1993	179.5 mm (7.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Witwater (Bos), 1929 to 1993. The record is 112 days in 1992, marked on the chart; the median year is 50 days.

Longest dry spell (CDD) at Witwater (Bos) by year
Year	Longest dry spell (CDD)
1929	25 days
1930	53 days
1931	43 days
1932	101 days
1933	48 days
1934	36 days
1935	79 days
1936	39 days
1937	81 days
1938	33 days
1939	30 days
1940	44 days
1941	83 days
1942	70 days
1943	38 days
1944	64 days
1945	70 days
1946	99 days
1947	45 days
1948	70 days
1949	45 days
1950	26 days
1951	50 days
1952	33 days
1953	50 days
1954	82 days
1955	90 days
1956	32 days
1957	25 days
1958	30 days
1959	56 days
1960	74 days
1961	29 days
1962	102 days
1963	35 days
1964	53 days
1965	60 days
1966	27 days
1967	44 days
1968	32 days
1969	38 days
1970	34 days
1971	28 days
1972	58 days
1973	39 days
1974	54 days
1975	51 days
1976	57 days
1977	48 days
1978	61 days
1979	54 days
1980	75 days
1981	43 days
1982	55 days
1983	35 days
1984	29 days
1985	55 days
1986	76 days
1987	40 days
1988	41 days
1989	63 days
1990	77 days
1991	63 days
1992	112 days
1993	95 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

61 years, 1930 to 1992

A day with at least 86.0 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 338.0 mm (13.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Witwater (Bos): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	86.0 mm (3.4 in)
5 years	125.6 mm (4.9 in)
10 years	160.4 mm (6.3 in)
25 years	217.3 mm (8.6 in)
50 years	271.5 mm (10.7 in)
100 years	338.0 mm (13.3 in)	Longer than the 61 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, 61 years of values from 1930 to 1992.

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: 346.7 mm (13.6 in) in 1939; 254.5 mm (10.0 in) in 1985; 209.0 mm (8.2 in) in 1974.

Download the Data

Data for Witwater (Bos) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Witwater (Bos) 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