Bulwer (Tnk) Weather Records (SF002384680)

Record envelope, standing records and threshold days for Bulwer (Tnk) (SF002384680), South Africa, with 78 years of record.

Key Facts for Bulwer (Tnk)

Bulwer (Tnk) (SF002384680) is a weather station in South Africa at -29.82 latitude and 29.77 longitude, 1,501 m (4,925 ft) above sea level.
The station reports from 1920 to 1997, 78 years of record.
0 records set at Bulwer (Tnk) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Bulwer (Tnk) set a daily record precipitation of 11.8 mm (0.5 in) on 27 July 1997.

About the Station

Location: South Africa, -29.82 latitude, 29.77 longitude.
Elevation: 1,501 m (4,925 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 Bulwer (Tnk). 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 Bulwer (Tnk), 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 Bulwer (Tnk) still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Bulwer (Tnk) between 16 May 1974 and 28 September 1987. Each dot is a new record.

When Bulwer (Tnk) set new all-time records
Date	Kind	Detail
1974-05-16	Record daily precipitation	Record daily precipitation 144.0 mm (5.7 in)
1987-09-28	Record daily precipitation	Record daily precipitation 168.5 mm (6.6 in)

Wettest Day of Each Month

Sep: 168.5 mm (6.6 in)

The wettest day on record for each calendar month at Bulwer (Tnk). The most was 168.5 mm (6.6 in) on 28 September 1987.

Record daily precipitation for each month at Bulwer (Tnk)
Month	Record daily precipitation (mm)	Date
Jan	98.0 mm (3.9 in)	20 January 1941
Feb	78.8 mm (3.1 in)	24 February 1956
Mar	102.0 mm (4.0 in)	3 March 1982
Apr	58.4 mm (2.3 in)	16 April 1938
May	144.0 mm (5.7 in)	16 May 1974
Jun	81.3 mm (3.2 in)	2 June 1947
Jul	84.1 mm (3.3 in)	8 July 1996
Aug	85.0 mm (3.3 in)	26 August 1970
Sep	168.5 mm (6.6 in)	28 September 1987
Oct	88.0 mm (3.5 in)	12 October 1970
Nov	97.0 mm (3.8 in)	5 November 1966
Dec	69.5 mm (2.7 in)	25 December 1991

Latest Records

Latest records at Bulwer (Tnk)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 1997	Bulwer (Tnk), ZA	daily rain	11.8 mm (0.5 in)	10.5 mm (0.4 in)	51 years	20 of 100 (Routine)
30 June 1997	Bulwer (Tnk), ZA	daily rain	3.8 mm (0.15 in)	1.3 mm (0.05 in)	62 years	20 of 100 (Routine)
29 June 1997	Bulwer (Tnk), ZA	daily rain	26.0 mm (1.0 in)	26.0 mm (1.0 in)	74 years	46 of 100 (Notable)
10 June 1997	Bulwer (Tnk), ZA	daily rain	6.0 mm (0.24 in)	2.4 mm (0.09 in)	46 years	20 of 100 (Routine)
29 May 1997	Bulwer (Tnk), ZA	daily rain	5.3 mm (0.21 in)	0.5 mm (0.02 in)	12 years	10 of 100 (Routine)
6 November 1996	Bulwer (Tnk), ZA	daily rain	20.6 mm (0.8 in)	0.6 mm (0.02 in)	35 years	17 of 100 (Routine)
9 July 1996	Bulwer (Tnk), ZA	daily rain	68.7 mm (2.7 in)	64.1 mm (2.5 in)	63 years	65 of 100 (Major)
8 July 1996	Bulwer (Tnk), ZA	monthly rain	84.1 mm (3.3 in)	14.1 mm (0.6 in)	28 years	38 of 100 (Notable)
7 July 1996	Bulwer (Tnk), ZA	daily rain	35.0 mm (1.4 in)	28.5 mm (1.1 in)	31 years	42 of 100 (Notable)
14 February 1996	Bulwer (Tnk), ZA	daily rain	34.8 mm (1.4 in)	4.8 mm (0.19 in)	28 years	18 of 100 (Routine)
22 December 1995	Bulwer (Tnk), ZA	daily rain	51.0 mm (2.0 in)	12.0 mm (0.5 in)	38 years	28 of 100 (Routine)
17 December 1995	Bulwer (Tnk), ZA	daily rain	43.6 mm (1.7 in)	12.6 mm (0.5 in)	12 years	21 of 100 (Routine)
23 October 1995	Bulwer (Tnk), ZA	daily rain	28.3 mm (1.1 in)	8.3 mm (0.33 in)	1 year	16 of 100 (Routine)
19 October 1995	Bulwer (Tnk), ZA	daily rain	23.9 mm (0.9 in)	1.0 mm (0.04 in)	69 years	20 of 100 (Routine)
17 September 1995	Bulwer (Tnk), ZA	daily rain	5.8 mm (0.23 in)	2.8 mm (0.11 in)	62 years	20 of 100 (Routine)
17 June 1995	Bulwer (Tnk), ZA	daily rain	61.9 mm (2.4 in)	26.4 mm (1.0 in)	29 years	34 of 100 (Routine)
16 June 1995	Bulwer (Tnk), ZA	daily rain	28.6 mm (1.1 in)	15.6 mm (0.6 in)	40 years	30 of 100 (Routine)
2 May 1995	Bulwer (Tnk), ZA	daily rain	34.0 mm (1.3 in)	6.2 mm (0.24 in)	10 years	14 of 100 (Routine)
25 July 1994	Bulwer (Tnk), ZA	daily rain	46.0 mm (1.8 in)	28.7 mm (1.1 in)	67 years	55 of 100 (Notable)
28 June 1994	Bulwer (Tnk), ZA	daily rain	34.0 mm (1.3 in)	27.0 mm (1.1 in)	31 years	35 of 100 (Notable)

Extremes by Year

1920 to 1997

Yearly extremes at Bulwer (Tnk): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	168.5 mm (6.6 in)	1987	59.5 mm (2.3 in)	76
Wettest five days (Rx5day)	337.5 mm (13.3 in)	1987	100.0 mm (3.9 in)	76
Longest dry spell (CDD)	178 days	1992	60 days	76

Wettest day (Rx1day)

The wettest day of the year at Bulwer (Tnk), 1920 to 1997. The record is 168.5 mm (6.6 in) in 1987, marked on the chart; the median year is 59.5 mm (2.3 in).

Wettest day (Rx1day) at Bulwer (Tnk) by year
Year	Wettest day (Rx1day)
1920	17.8 mm (0.7 in)
1923	76.2 mm (3.0 in)
1924	31.2 mm (1.2 in)
1925	45.7 mm (1.8 in)
1926	54.4 mm (2.1 in)
1927	73.4 mm (2.9 in)
1928	64.3 mm (2.5 in)
1929	38.6 mm (1.5 in)
1930	17.8 mm (0.7 in)
1931	52.3 mm (2.1 in)
1932	40.9 mm (1.6 in)
1933	25.9 mm (1.0 in)
1934	48.8 mm (1.9 in)
1935	46.2 mm (1.8 in)
1936	64.0 mm (2.5 in)
1937	45.7 mm (1.8 in)
1938	73.2 mm (2.9 in)
1939	58.9 mm (2.3 in)
1940	43.9 mm (1.7 in)
1941	98.0 mm (3.9 in)
1942	74.2 mm (2.9 in)
1943	63.5 mm (2.5 in)
1944	41.9 mm (1.6 in)
1945	66.0 mm (2.6 in)
1946	40.4 mm (1.6 in)
1947	88.9 mm (3.5 in)
1948	66.8 mm (2.6 in)
1949	51.8 mm (2.0 in)
1950	64.0 mm (2.5 in)
1951	56.1 mm (2.2 in)
1952	55.6 mm (2.2 in)
1953	49.5 mm (1.9 in)
1954	65.5 mm (2.6 in)
1955	95.0 mm (3.7 in)
1956	78.8 mm (3.1 in)
1957	72.5 mm (2.9 in)
1958	52.0 mm (2.0 in)
1959	68.5 mm (2.7 in)
1960	44.0 mm (1.7 in)
1961	67.5 mm (2.7 in)
1962	43.0 mm (1.7 in)
1963	44.0 mm (1.7 in)
1964	58.0 mm (2.3 in)
1965	54.0 mm (2.1 in)
1966	97.0 mm (3.8 in)
1967	70.0 mm (2.8 in)
1968	33.0 mm (1.3 in)
1969	48.0 mm (1.9 in)
1970	88.0 mm (3.5 in)
1971	42.5 mm (1.7 in)
1972	77.0 mm (3.0 in)
1973	56.0 mm (2.2 in)
1974	144.0 mm (5.7 in)
1975	54.5 mm (2.1 in)
1976	70.5 mm (2.8 in)
1977	48.5 mm (1.9 in)
1978	58.2 mm (2.3 in)
1979	62.5 mm (2.5 in)
1980	61.2 mm (2.4 in)
1981	79.9 mm (3.1 in)
1982	102.0 mm (4.0 in)
1983	55.0 mm (2.2 in)
1984	43.1 mm (1.7 in)
1985	61.1 mm (2.4 in)
1986	77.0 mm (3.0 in)
1987	168.5 mm (6.6 in)
1988	64.5 mm (2.5 in)
1989	61.0 mm (2.4 in)
1990	58.0 mm (2.3 in)
1991	69.5 mm (2.7 in)
1992	46.0 mm (1.8 in)
1993	39.0 mm (1.5 in)
1994	60.0 mm (2.4 in)
1995	61.9 mm (2.4 in)
1996	84.1 mm (3.3 in)
1997	68.2 mm (2.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Bulwer (Tnk), 1920 to 1997. The record is 337.5 mm (13.3 in) in 1987, marked on the chart; the median year is 100.0 mm (3.9 in).

Wettest five days (Rx5day) at Bulwer (Tnk) by year
Year	Wettest five days (Rx5day)
1920	17.8 mm (0.7 in)
1923	116.8 mm (4.6 in)
1924	71.9 mm (2.8 in)
1925	95.8 mm (3.8 in)
1926	89.5 mm (3.5 in)
1927	143.7 mm (5.7 in)
1928	75.8 mm (3.0 in)
1929	102.1 mm (4.0 in)
1930	17.8 mm (0.7 in)
1931	79.7 mm (3.1 in)
1932	79.3 mm (3.1 in)
1933	71.0 mm (2.8 in)
1934	120.7 mm (4.8 in)
1935	81.4 mm (3.2 in)
1936	108.2 mm (4.3 in)
1937	89.7 mm (3.5 in)
1938	99.1 mm (3.9 in)
1939	90.2 mm (3.6 in)
1940	81.3 mm (3.2 in)
1941	123.4 mm (4.9 in)
1942	115.2 mm (4.5 in)
1943	104.2 mm (4.1 in)
1944	82.6 mm (3.3 in)
1945	128.6 mm (5.1 in)
1946	72.6 mm (2.9 in)
1947	100.0 mm (3.9 in)
1948	139.9 mm (5.5 in)
1949	80.7 mm (3.2 in)
1950	133.9 mm (5.3 in)
1951	80.1 mm (3.2 in)
1952	86.1 mm (3.4 in)
1953	75.5 mm (3.0 in)
1954	110.0 mm (4.3 in)
1955	159.4 mm (6.3 in)
1956	120.6 mm (4.7 in)
1957	133.0 mm (5.2 in)
1958	92.0 mm (3.6 in)
1959	99.0 mm (3.9 in)
1960	71.5 mm (2.8 in)
1961	81.5 mm (3.2 in)
1962	96.0 mm (3.8 in)
1963	84.0 mm (3.3 in)
1964	83.0 mm (3.3 in)
1965	103.5 mm (4.1 in)
1966	141.5 mm (5.6 in)
1967	122.5 mm (4.8 in)
1968	63.5 mm (2.5 in)
1969	106.0 mm (4.2 in)
1970	126.5 mm (5.0 in)
1971	69.5 mm (2.7 in)
1972	101.5 mm (4.0 in)
1973	84.5 mm (3.3 in)
1974	153.0 mm (6.0 in)
1975	99.5 mm (3.9 in)
1976	123.8 mm (4.9 in)
1977	72.0 mm (2.8 in)
1978	142.5 mm (5.6 in)
1979	160.9 mm (6.3 in)
1980	61.2 mm (2.4 in)
1981	105.0 mm (4.1 in)
1982	102.0 mm (4.0 in)
1983	85.9 mm (3.4 in)
1984	86.3 mm (3.4 in)
1985	188.0 mm (7.4 in)
1986	148.0 mm (5.8 in)
1987	337.5 mm (13.3 in)
1988	125.5 mm (4.9 in)
1989	119.5 mm (4.7 in)
1990	97.0 mm (3.8 in)
1991	159.5 mm (6.3 in)
1992	100.0 mm (3.9 in)
1993	100.0 mm (3.9 in)
1994	103.0 mm (4.1 in)
1995	109.8 mm (4.3 in)
1996	198.5 mm (7.8 in)
1997	103.2 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Bulwer (Tnk), 1920 to 1997. The record is 178 days in 1992, marked on the chart; the median year is 60 days.

Longest dry spell (CDD) at Bulwer (Tnk) by year
Year	Longest dry spell (CDD)
1920	10 days
1923	72 days
1924	36 days
1925	119 days
1926	72 days
1927	57 days
1928	84 days
1929	62 days
1930	95 days
1931	83 days
1932	32 days
1933	73 days
1934	50 days
1935	45 days
1936	46 days
1937	58 days
1938	29 days
1939	40 days
1940	63 days
1941	34 days
1942	42 days
1943	63 days
1944	49 days
1945	76 days
1946	75 days
1947	34 days
1948	74 days
1949	56 days
1950	46 days
1951	66 days
1952	31 days
1953	59 days
1954	60 days
1955	48 days
1956	80 days
1957	69 days
1958	106 days
1959	55 days
1960	72 days
1961	60 days
1962	86 days
1963	33 days
1964	66 days
1965	39 days
1966	58 days
1967	64 days
1968	111 days
1969	42 days
1970	59 days
1971	33 days
1972	33 days
1973	94 days
1974	59 days
1975	99 days
1976	42 days
1977	108 days
1978	80 days
1979	81 days
1980	69 days
1981	75 days
1982	27 days
1983	60 days
1984	35 days
1985	73 days
1986	126 days
1987	58 days
1988	53 days
1989	106 days
1990	48 days
1991	96 days
1992	178 days
1993	88 days
1994	53 days
1995	38 days
1996	34 days
1997	24 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

73 years, 1923 to 1996

A day with at least 58.0 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 136.1 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Bulwer (Tnk): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	58.0 mm (2.3 in)
5 years	77.2 mm (3.0 in)
10 years	90.6 mm (3.6 in)
25 years	108.3 mm (4.3 in)
50 years	122.0 mm (4.8 in)
100 years	136.1 mm (5.4 in)	Longer than the 73 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, 73 years of values from 1923 to 1996.

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: 168.5 mm (6.6 in) in 1987; 144.0 mm (5.7 in) in 1974; 102.0 mm (4.0 in) in 1982.

Download the Data

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