Mbulu (Bos) Weather Records (SF001023690)

Record envelope, standing records and threshold days for Mbulu (Bos) (SF001023690), South Africa, with 78 years of record.

Key Facts for Mbulu (Bos)

Mbulu (Bos) (SF001023690) is a weather station in South Africa at -32.17 latitude and 27.72 longitude, 1,137 m (3,730 ft) above sea level.
The station reports from 1920 to 1997, 78 years of record.
0 records set at Mbulu (Bos) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Mbulu (Bos) set a daily record precipitation of 27.9 mm (1.1 in) on 15 October 1997.

About the Station

Location: South Africa, -32.17 latitude, 27.72 longitude.
Elevation: 1,137 m (3,730 ft).
Period of record: 1920 to 1997, 78 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 Mbulu (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 Mbulu (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 Mbulu (Bos) still stand.

Wettest Day of Each Month

Feb: 154.2 mm (6.1 in)

The wettest day on record for each calendar month at Mbulu (Bos). The most was 154.2 mm (6.1 in) on 18 February 1932.

Record daily precipitation for each month at Mbulu (Bos)
Month	Record daily precipitation (mm)	Date
Jan	89.0 mm (3.5 in)	25 January 1976
Feb	154.2 mm (6.1 in)	18 February 1932
Mar	84.0 mm (3.3 in)	18 March 1967
Apr	79.5 mm (3.1 in)	8 April 1930
May	85.0 mm (3.3 in)	16 May 1959
Jun	78.8 mm (3.1 in)	12 June 1997
Jul	110.7 mm (4.4 in)	6 July 1931
Aug	114.0 mm (4.5 in)	12 August 1930
Sep	108.2 mm (4.3 in)	17 September 1932
Oct	128.8 mm (5.1 in)	25 October 1932
Nov	117.0 mm (4.6 in)	2 November 1985
Dec	131.8 mm (5.2 in)	18 December 1920

Latest Records

Latest records at Mbulu (Bos)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 October 1997	Mbulu (Bos), ZA	daily rain	27.9 mm (1.1 in)	14.7 mm (0.6 in)	64 years	38 of 100 (Notable)
12 June 1997	Mbulu (Bos), ZA	monthly rain	78.8 mm (3.1 in)	27.2 mm (1.1 in)	67 years	70 of 100 (Major)
11 June 1997	Mbulu (Bos), ZA	daily rain	40.0 mm (1.6 in)	17.1 mm (0.7 in)	62 years	46 of 100 (Notable)
9 June 1997	Mbulu (Bos), ZA	daily rain	7.8 mm (0.31 in)	2.3 mm (0.09 in)	30 years	18 of 100 (Routine)
30 April 1997	Mbulu (Bos), ZA	daily rain	45.3 mm (1.8 in)	25.3 mm (1.0 in)	43 years	40 of 100 (Notable)
17 April 1997	Mbulu (Bos), ZA	daily rain	28.5 mm (1.1 in)	13.8 mm (0.5 in)	24 years	25 of 100 (Routine)
7 April 1997	Mbulu (Bos), ZA	daily rain	45.5 mm (1.8 in)	13.0 mm (0.5 in)	59 years	34 of 100 (Routine)
2 January 1997	Mbulu (Bos), ZA	daily rain	48.7 mm (1.9 in)	9.2 mm (0.36 in)	11 years	18 of 100 (Routine)
17 November 1996	Mbulu (Bos), ZA	daily rain	67.0 mm (2.6 in)	35.0 mm (1.4 in)	29 years	43 of 100 (Notable)
6 November 1996	Mbulu (Bos), ZA	daily rain	37.0 mm (1.5 in)	16.7 mm (0.7 in)	59 years	37 of 100 (Notable)
24 June 1996	Mbulu (Bos), ZA	daily rain	5.0 mm (0.20 in)	2.0 mm (0.08 in)	4 years	10 of 100 (Routine)
24 May 1996	Mbulu (Bos), ZA	daily rain	14.0 mm (0.6 in)	0.8 mm (0.03 in)	39 years	18 of 100 (Routine)
2 April 1996	Mbulu (Bos), ZA	daily rain	41.0 mm (1.6 in)	13.0 mm (0.5 in)	27 years	25 of 100 (Routine)
11 February 1996	Mbulu (Bos), ZA	daily rain	45.0 mm (1.8 in)	15.0 mm (0.6 in)	20 years	24 of 100 (Routine)
18 January 1996	Mbulu (Bos), ZA	daily rain	43.2 mm (1.7 in)	3.2 mm (0.13 in)	14 years	13 of 100 (Routine)
6 January 1996	Mbulu (Bos), ZA	daily rain	21.9 mm (0.9 in)	1.6 mm (0.06 in)	50 years	20 of 100 (Routine)
21 December 1995	Mbulu (Bos), ZA	daily rain	49.0 mm (1.9 in)	14.7 mm (0.6 in)	57 years	35 of 100 (Notable)
8 December 1995	Mbulu (Bos), ZA	daily rain	29.8 mm (1.2 in)	6.9 mm (0.27 in)	70 years	33 of 100 (Routine)
16 June 1995	Mbulu (Bos), ZA	daily rain	28.5 mm (1.1 in)	1.5 mm (0.06 in)	29 years	16 of 100 (Routine)
10 April 1995	Mbulu (Bos), ZA	daily rain	37.0 mm (1.5 in)	13.0 mm (0.5 in)	36 years	28 of 100 (Routine)

Extremes by Year

1920 to 1997

Yearly extremes at Mbulu (Bos): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	154.2 mm (6.1 in)	1932	55.8 mm (2.2 in)	78
Wettest five days (Rx5day)	249.7 mm (9.8 in)	1932	102.4 mm (4.0 in)	78
Longest dry spell (CDD)	110 days	1990	43 days	78

Wettest day (Rx1day)

The wettest day of the year at Mbulu (Bos), 1920 to 1997. The record is 154.2 mm (6.1 in) in 1932, marked on the chart; the median year is 55.8 mm (2.2 in).

Wettest day (Rx1day) at Mbulu (Bos) by year
Year	Wettest day (Rx1day)
1920	131.8 mm (5.2 in)
1921	43.9 mm (1.7 in)
1922	38.9 mm (1.5 in)
1923	51.8 mm (2.0 in)
1924	50.3 mm (2.0 in)
1925	52.1 mm (2.1 in)
1926	42.2 mm (1.7 in)
1927	46.2 mm (1.8 in)
1928	48.3 mm (1.9 in)
1929	51.8 mm (2.0 in)
1930	114.0 mm (4.5 in)
1931	110.7 mm (4.4 in)
1932	154.2 mm (6.1 in)
1933	64.0 mm (2.5 in)
1934	63.5 mm (2.5 in)
1935	47.0 mm (1.9 in)
1936	38.1 mm (1.5 in)
1937	50.8 mm (2.0 in)
1938	69.9 mm (2.8 in)
1939	57.2 mm (2.3 in)
1940	114.3 mm (4.5 in)
1941	43.7 mm (1.7 in)
1942	38.1 mm (1.5 in)
1943	57.2 mm (2.3 in)
1944	56.4 mm (2.2 in)
1945	61.7 mm (2.4 in)
1946	48.3 mm (1.9 in)
1947	90.4 mm (3.6 in)
1948	58.4 mm (2.3 in)
1949	38.1 mm (1.5 in)
1950	64.8 mm (2.6 in)
1951	45.7 mm (1.8 in)
1952	55.1 mm (2.2 in)
1953	100.0 mm (3.9 in)
1954	40.0 mm (1.6 in)
1955	57.0 mm (2.2 in)
1956	60.0 mm (2.4 in)
1957	45.0 mm (1.8 in)
1958	55.0 mm (2.2 in)
1959	85.0 mm (3.3 in)
1960	42.0 mm (1.7 in)
1961	40.0 mm (1.6 in)
1962	51.0 mm (2.0 in)
1963	87.0 mm (3.4 in)
1964	87.0 mm (3.4 in)
1965	35.5 mm (1.4 in)
1966	35.5 mm (1.4 in)
1967	84.0 mm (3.3 in)
1968	23.0 mm (0.9 in)
1969	54.0 mm (2.1 in)
1970	104.5 mm (4.1 in)
1971	61.3 mm (2.4 in)
1972	47.0 mm (1.9 in)
1973	52.4 mm (2.1 in)
1974	54.0 mm (2.1 in)
1975	48.0 mm (1.9 in)
1976	89.0 mm (3.5 in)
1977	63.0 mm (2.5 in)
1978	77.0 mm (3.0 in)
1979	79.0 mm (3.1 in)
1980	76.5 mm (3.0 in)
1981	60.0 mm (2.4 in)
1982	35.0 mm (1.4 in)
1983	40.0 mm (1.6 in)
1984	41.0 mm (1.6 in)
1985	117.0 mm (4.6 in)
1986	55.0 mm (2.2 in)
1987	40.0 mm (1.6 in)
1988	48.0 mm (1.9 in)
1989	72.0 mm (2.8 in)
1990	61.5 mm (2.4 in)
1991	65.2 mm (2.6 in)
1992	40.0 mm (1.6 in)
1993	63.6 mm (2.5 in)
1994	78.1 mm (3.1 in)
1995	61.5 mm (2.4 in)
1996	67.0 mm (2.6 in)
1997	78.8 mm (3.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mbulu (Bos), 1920 to 1997. The record is 249.7 mm (9.8 in) in 1932, marked on the chart; the median year is 102.4 mm (4.0 in).

Wettest five days (Rx5day) at Mbulu (Bos) by year
Year	Wettest five days (Rx5day)
1920	146.8 mm (5.8 in)
1921	111.5 mm (4.4 in)
1922	116.4 mm (4.6 in)
1923	113.0 mm (4.4 in)
1924	61.2 mm (2.4 in)
1925	136.5 mm (5.4 in)
1926	97.8 mm (3.9 in)
1927	88.9 mm (3.5 in)
1928	95.5 mm (3.8 in)
1929	93.8 mm (3.7 in)
1930	167.6 mm (6.6 in)
1931	188.2 mm (7.4 in)
1932	249.7 mm (9.8 in)
1933	130.3 mm (5.1 in)
1934	128.6 mm (5.1 in)
1935	99.1 mm (3.9 in)
1936	102.4 mm (4.0 in)
1937	83.9 mm (3.3 in)
1938	82.6 mm (3.3 in)
1939	103.9 mm (4.1 in)
1940	142.2 mm (5.6 in)
1941	72.0 mm (2.8 in)
1942	63.8 mm (2.5 in)
1943	80.9 mm (3.2 in)
1944	105.5 mm (4.2 in)
1945	91.4 mm (3.6 in)
1946	79.3 mm (3.1 in)
1947	102.3 mm (4.0 in)
1948	82.8 mm (3.3 in)
1949	88.4 mm (3.5 in)
1950	79.3 mm (3.1 in)
1951	84.8 mm (3.3 in)
1952	96.2 mm (3.8 in)
1953	133.2 mm (5.2 in)
1954	85.0 mm (3.3 in)
1955	85.5 mm (3.4 in)
1956	106.5 mm (4.2 in)
1957	59.5 mm (2.3 in)
1958	119.5 mm (4.7 in)
1959	164.0 mm (6.5 in)
1960	106.5 mm (4.2 in)
1961	77.0 mm (3.0 in)
1962	79.5 mm (3.1 in)
1963	163.0 mm (6.4 in)
1964	87.0 mm (3.4 in)
1965	65.5 mm (2.6 in)
1966	78.5 mm (3.1 in)
1967	90.0 mm (3.5 in)
1968	57.0 mm (2.2 in)
1969	114.0 mm (4.5 in)
1970	238.0 mm (9.4 in)
1971	113.8 mm (4.5 in)
1972	168.3 mm (6.6 in)
1973	85.2 mm (3.4 in)
1974	113.0 mm (4.4 in)
1975	89.5 mm (3.5 in)
1976	199.0 mm (7.8 in)
1977	114.0 mm (4.5 in)
1978	114.0 mm (4.5 in)
1979	113.0 mm (4.4 in)
1980	76.5 mm (3.0 in)
1981	143.0 mm (5.6 in)
1982	75.0 mm (3.0 in)
1983	65.0 mm (2.6 in)
1984	61.2 mm (2.4 in)
1985	210.0 mm (8.3 in)
1986	103.5 mm (4.1 in)
1987	72.3 mm (2.8 in)
1988	116.1 mm (4.6 in)
1989	94.5 mm (3.7 in)
1990	110.5 mm (4.4 in)
1991	139.5 mm (5.5 in)
1992	60.5 mm (2.4 in)
1993	112.7 mm (4.4 in)
1994	100.3 mm (3.9 in)
1995	105.1 mm (4.1 in)
1996	107.5 mm (4.2 in)
1997	149.1 mm (5.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mbulu (Bos), 1920 to 1997. The record is 110 days in 1990, marked on the chart; the median year is 43 days.

Longest dry spell (CDD) at Mbulu (Bos) by year
Year	Longest dry spell (CDD)
1920	37 days
1921	41 days
1922	20 days
1923	51 days
1924	30 days
1925	22 days
1926	67 days
1927	81 days
1928	52 days
1929	44 days
1930	28 days
1931	33 days
1932	30 days
1933	55 days
1934	50 days
1935	78 days
1936	48 days
1937	53 days
1938	21 days
1939	52 days
1940	84 days
1941	42 days
1942	65 days
1943	58 days
1944	32 days
1945	47 days
1946	43 days
1947	27 days
1948	53 days
1949	34 days
1950	97 days
1951	40 days
1952	35 days
1953	21 days
1954	28 days
1955	38 days
1956	38 days
1957	27 days
1958	42 days
1959	47 days
1960	54 days
1961	44 days
1962	47 days
1963	41 days
1964	37 days
1965	37 days
1966	56 days
1967	29 days
1968	46 days
1969	37 days
1970	58 days
1971	32 days
1972	57 days
1973	62 days
1974	47 days
1975	59 days
1976	36 days
1977	50 days
1978	35 days
1979	48 days
1980	49 days
1981	98 days
1982	79 days
1983	42 days
1984	60 days
1985	48 days
1986	31 days
1987	31 days
1988	35 days
1989	49 days
1990	110 days
1991	34 days
1992	43 days
1993	34 days
1994	38 days
1995	37 days
1996	30 days
1997	20 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

71 years, 1922 to 1997

A day with at least 55.8 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 151.0 mm (5.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Mbulu (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	55.8 mm (2.2 in)
5 years	75.6 mm (3.0 in)
10 years	90.8 mm (3.6 in)
25 years	112.5 mm (4.4 in)
50 years	130.8 mm (5.1 in)
100 years	151.0 mm (5.9 in)	Longer than the 71 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, 71 years of values from 1922 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: 154.2 mm (6.1 in) in 1932; 117.0 mm (4.6 in) in 1985; 114.3 mm (4.5 in) in 1940.

Download the Data

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