Bulwater Weather Records (SF000906000)

Record envelope, standing records and threshold days for Bulwater (SF000906000), South Africa, with 67 years of record.

Key Facts for Bulwater

Bulwater (SF000906000) is a weather station in South Africa at -32.50 latitude and 21.82 longitude, 700 m (2,297 ft) above sea level.
The station reports from 1912 to 1978, 67 years of record.
0 records set at Bulwater still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Bulwater set a daily record precipitation of 33.0 mm (1.3 in) on 24 December 1977.

About the Station

Location: South Africa, -32.50 latitude, 21.82 longitude.
Elevation: 700 m (2,297 ft).
Period of record: 1912 to 1978, 67 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 Bulwater. 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 Bulwater, 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 Bulwater still stand.

Wettest Day of Each Month

Nov: 87.6 mm (3.4 in)

The wettest day on record for each calendar month at Bulwater. The most was 87.6 mm (3.4 in) on 13 November 1923.

Record daily precipitation for each month at Bulwater
Month	Record daily precipitation (mm)	Date
Jan	40.6 mm (1.6 in)	5 January 1941
Feb	57.7 mm (2.3 in)	3 February 1921
Mar	45.7 mm (1.8 in)	25 March 1938
Apr	49.5 mm (1.9 in)	2 April 1914
May	46.9 mm (1.8 in)	26 May 1967
Jun	36.0 mm (1.4 in)	22 June 1953
Jul	56.0 mm (2.2 in)	31 July 1961
Aug	76.0 mm (3.0 in)	20 August 1971
Sep	29.0 mm (1.1 in)	12 September 1957
Oct	50.0 mm (2.0 in)	30 October 1956
Nov	87.6 mm (3.4 in)	13 November 1923
Dec	50.8 mm (2.0 in)	28 December 1921

Latest Records

Latest records at Bulwater
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 December 1977	Bulwater, ZA	daily rain	33.0 mm (1.3 in)	33.0 mm (1.3 in)	64 years	56 of 100 (Notable)
28 February 1977	Bulwater, ZA	daily rain	33.5 mm (1.3 in)	10.6 mm (0.4 in)	29 years	23 of 100 (Routine)
25 October 1976	Bulwater, ZA	daily rain	9.5 mm (0.37 in)	8.2 mm (0.32 in)	18 years	18 of 100 (Routine)
4 October 1976	Bulwater, ZA	daily rain	3.5 mm (0.14 in)	3.5 mm (0.14 in)	63 years	20 of 100 (Routine)
3 October 1976	Bulwater, ZA	daily rain	6.5 mm (0.26 in)	1.4 mm (0.06 in)	46 years	20 of 100 (Routine)
9 March 1976	Bulwater, ZA	daily rain	20.3 mm (0.8 in)	7.3 mm (0.29 in)	20 years	18 of 100 (Routine)
5 March 1976	Bulwater, ZA	daily rain	9.0 mm (0.35 in)	1.4 mm (0.06 in)	29 years	15 of 100 (Routine)
5 February 1976	Bulwater, ZA	daily rain	26.0 mm (1.0 in)	4.4 mm (0.17 in)	64 years	29 of 100 (Routine)
4 February 1976	Bulwater, ZA	daily rain	20.2 mm (0.8 in)	6.7 mm (0.26 in)	1 year	12 of 100 (Routine)
25 January 1976	Bulwater, ZA	daily rain	12.0 mm (0.5 in)	12.0 mm (0.5 in)	64 years	20 of 100 (Routine)
24 January 1976	Bulwater, ZA	daily rain (Tie)	4.5 mm (0.18 in)	tie	4 years	1 of 100 (Routine)
22 December 1975	Bulwater, ZA	daily rain	40.0 mm (1.6 in)	40.0 mm (1.6 in)	61 years	63 of 100 (Major)
26 November 1975	Bulwater, ZA	daily rain	31.0 mm (1.2 in)	6.9 mm (0.27 in)	42 years	24 of 100 (Routine)
2 September 1975	Bulwater, ZA	daily rain (Tie)	3.0 mm (0.12 in)	tie	28 years	3 of 100 (Routine)
8 May 1975	Bulwater, ZA	daily rain (Tie)	13.5 mm (0.5 in)	tie	40 years	4 of 100 (Routine)
27 February 1975	Bulwater, ZA	daily rain	15.5 mm (0.6 in)	0.8 mm (0.03 in)	43 years	18 of 100 (Routine)
18 December 1974	Bulwater, ZA	daily rain	36.0 mm (1.4 in)	8.6 mm (0.34 in)	53 years	30 of 100 (Routine)
28 November 1974	Bulwater, ZA	daily rain	8.0 mm (0.31 in)	1.0 mm (0.04 in)	19 years	11 of 100 (Routine)
22 February 1974	Bulwater, ZA	daily rain	33.0 mm (1.3 in)	19.5 mm (0.8 in)	40 years	35 of 100 (Notable)
4 February 1974	Bulwater, ZA	daily rain	13.5 mm (0.5 in)	13.5 mm (0.5 in)	62 years	20 of 100 (Routine)

Extremes by Year

1912 to 1978

Yearly extremes at Bulwater: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	87.6 mm (3.4 in)	1923	30.5 mm (1.2 in)	67
Wettest five days (Rx5day)	87.6 mm (3.4 in)	1923	40.0 mm (1.6 in)	67
Longest dry spell (CDD)	292 days	1937	106 days	67

Wettest day (Rx1day)

The wettest day of the year at Bulwater, 1912 to 1978. The record is 87.6 mm (3.4 in) in 1923, marked on the chart; the median year is 30.5 mm (1.2 in).

Wettest day (Rx1day) at Bulwater by year
Year	Wettest day (Rx1day)
1912	34.8 mm (1.4 in)
1913	30.5 mm (1.2 in)
1914	49.5 mm (1.9 in)
1915	25.4 mm (1.0 in)
1916	19.3 mm (0.8 in)
1917	47.0 mm (1.9 in)
1918	33.0 mm (1.3 in)
1919	34.3 mm (1.4 in)
1920	27.4 mm (1.1 in)
1921	57.7 mm (2.3 in)
1922	33.0 mm (1.3 in)
1923	87.6 mm (3.4 in)
1924	33.0 mm (1.3 in)
1925	20.8 mm (0.8 in)
1926	17.3 mm (0.7 in)
1927	10.2 mm (0.4 in)
1928	39.1 mm (1.5 in)
1929	22.9 mm (0.9 in)
1930	20.8 mm (0.8 in)
1931	26.4 mm (1.0 in)
1932	24.1 mm (0.9 in)
1933	26.7 mm (1.1 in)
1934	20.6 mm (0.8 in)
1935	31.8 mm (1.3 in)
1936	22.9 mm (0.9 in)
1937	16.0 mm (0.6 in)
1938	45.7 mm (1.8 in)
1939	42.9 mm (1.7 in)
1940	26.7 mm (1.1 in)
1941	40.6 mm (1.6 in)
1942	34.0 mm (1.3 in)
1943	27.9 mm (1.1 in)
1944	9.7 mm (0.38 in)
1945	13.5 mm (0.5 in)
1946	15.2 mm (0.6 in)
1947	19.1 mm (0.8 in)
1948	22.9 mm (0.9 in)
1949	31.0 mm (1.2 in)
1950	36.6 mm (1.4 in)
1951	54.6 mm (2.1 in)
1952	31.2 mm (1.2 in)
1953	36.0 mm (1.4 in)
1954	41.0 mm (1.6 in)
1955	43.0 mm (1.7 in)
1956	50.0 mm (2.0 in)
1957	33.0 mm (1.3 in)
1958	23.0 mm (0.9 in)
1959	27.0 mm (1.1 in)
1960	42.0 mm (1.7 in)
1961	56.0 mm (2.2 in)
1962	29.0 mm (1.1 in)
1963	25.5 mm (1.0 in)
1964	23.0 mm (0.9 in)
1965	20.0 mm (0.8 in)
1966	17.0 mm (0.7 in)
1967	46.9 mm (1.8 in)
1968	27.5 mm (1.1 in)
1969	51.8 mm (2.0 in)
1970	33.2 mm (1.3 in)
1971	76.0 mm (3.0 in)
1972	28.0 mm (1.1 in)
1973	19.0 mm (0.7 in)
1974	39.0 mm (1.5 in)
1975	40.0 mm (1.6 in)
1976	26.0 mm (1.0 in)
1977	33.5 mm (1.3 in)
1978	8.5 mm (0.33 in)

Wettest five days (Rx5day)

The wettest five days of the year at Bulwater, 1912 to 1978. The record is 87.6 mm (3.4 in) in 1923, marked on the chart; the median year is 40.0 mm (1.6 in).

Wettest five days (Rx5day) at Bulwater by year
Year	Wettest five days (Rx5day)
1912	38.6 mm (1.5 in)
1913	38.1 mm (1.5 in)
1914	49.5 mm (1.9 in)
1915	25.4 mm (1.0 in)
1916	30.0 mm (1.2 in)
1917	47.0 mm (1.9 in)
1918	40.6 mm (1.6 in)
1919	53.4 mm (2.1 in)
1920	27.4 mm (1.1 in)
1921	78.7 mm (3.1 in)
1922	82.6 mm (3.3 in)
1923	87.6 mm (3.4 in)
1924	33.0 mm (1.3 in)
1925	24.9 mm (1.0 in)
1926	17.3 mm (0.7 in)
1927	10.2 mm (0.4 in)
1928	57.6 mm (2.3 in)
1929	22.9 mm (0.9 in)
1930	20.8 mm (0.8 in)
1931	73.7 mm (2.9 in)
1932	73.7 mm (2.9 in)
1933	31.8 mm (1.3 in)
1934	29.9 mm (1.2 in)
1935	40.7 mm (1.6 in)
1936	29.8 mm (1.2 in)
1937	43.1 mm (1.7 in)
1938	50.8 mm (2.0 in)
1939	68.0 mm (2.7 in)
1940	34.6 mm (1.4 in)
1941	61.5 mm (2.4 in)
1942	49.2 mm (1.9 in)
1943	36.3 mm (1.4 in)
1944	13.8 mm (0.5 in)
1945	26.2 mm (1.0 in)
1946	27.9 mm (1.1 in)
1947	23.9 mm (0.9 in)
1948	33.1 mm (1.3 in)
1949	55.4 mm (2.2 in)
1950	64.5 mm (2.5 in)
1951	83.1 mm (3.3 in)
1952	43.5 mm (1.7 in)
1953	56.5 mm (2.2 in)
1954	46.5 mm (1.8 in)
1955	43.0 mm (1.7 in)
1956	53.5 mm (2.1 in)
1957	36.0 mm (1.4 in)
1958	32.0 mm (1.3 in)
1959	35.0 mm (1.4 in)
1960	51.0 mm (2.0 in)
1961	82.5 mm (3.2 in)
1962	29.0 mm (1.1 in)
1963	25.5 mm (1.0 in)
1964	66.0 mm (2.6 in)
1965	35.0 mm (1.4 in)
1966	17.0 mm (0.7 in)
1967	51.9 mm (2.0 in)
1968	46.0 mm (1.8 in)
1969	76.8 mm (3.0 in)
1970	76.0 mm (3.0 in)
1971	76.0 mm (3.0 in)
1972	35.5 mm (1.4 in)
1973	37.5 mm (1.5 in)
1974	39.0 mm (1.5 in)
1975	40.0 mm (1.6 in)
1976	60.7 mm (2.4 in)
1977	33.5 mm (1.3 in)
1978	8.5 mm (0.33 in)

Longest dry spell (CDD)

The longest dry spell of the year at Bulwater, 1912 to 1978. The record is 292 days in 1937, marked on the chart; the median year is 106 days.

Longest dry spell (CDD) at Bulwater by year
Year	Longest dry spell (CDD)
1912	30 days
1913	83 days
1914	54 days
1915	275 days
1916	229 days
1917	45 days
1918	93 days
1919	208 days
1920	114 days
1921	136 days
1922	105 days
1923	145 days
1924	133 days
1925	62 days
1926	110 days
1927	118 days
1928	49 days
1929	61 days
1930	101 days
1931	74 days
1932	96 days
1933	172 days
1934	140 days
1935	59 days
1936	105 days
1937	292 days
1938	69 days
1939	96 days
1940	91 days
1941	128 days
1942	135 days
1943	113 days
1944	110 days
1945	156 days
1946	116 days
1947	78 days
1948	77 days
1949	77 days
1950	97 days
1951	137 days
1952	102 days
1953	63 days
1954	73 days
1955	121 days
1956	95 days
1957	106 days
1958	138 days
1959	61 days
1960	117 days
1961	151 days
1962	113 days
1963	55 days
1964	76 days
1965	64 days
1966	97 days
1967	78 days
1968	107 days
1969	159 days
1970	106 days
1971	112 days
1972	288 days
1973	185 days
1974	278 days
1975	85 days
1976	203 days
1977	215 days
1978	27 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

64 years, 1913 to 1977

A day with at least 29.6 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 81.3 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Bulwater: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	29.6 mm (1.2 in)
5 years	42.2 mm (1.7 in)
10 years	51.0 mm (2.0 in)
25 years	62.7 mm (2.5 in)
50 years	71.8 mm (2.8 in)
100 years	81.3 mm (3.2 in)	Longer than the 64 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, 64 years of values from 1913 to 1977.

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: 87.6 mm (3.4 in) in 1923; 76.0 mm (3.0 in) in 1971; 57.7 mm (2.3 in) in 1921.

Download the Data

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