Stilbaai (Bos) Weather Records (SF000107420)

Record envelope, standing records and threshold days for Stilbaai (Bos) (SF000107420), South Africa, with 74 years of record.

Key Facts for Stilbaai (Bos)

Stilbaai (Bos) (SF000107420) is a weather station in South Africa at -34.37 latitude and 21.42 longitude, 15 m (49 ft) above sea level.
The station reports from 1924 to 1997, 74 years of record.
0 records set at Stilbaai (Bos) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Stilbaai (Bos) set a daily record precipitation of 26.0 mm (1.0 in) on 25 October 1997.

About the Station

Location: South Africa, -34.37 latitude, 21.42 longitude.
Elevation: 15 m (49 ft).
Period of record: 1924 to 1997, 74 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 Stilbaai (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 Stilbaai (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 Stilbaai (Bos) still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Stilbaai (Bos) between 29 June 1978 and 29 June 1978. Each dot is a new record.

Wettest Day of Each Month

Jun: 140.0 mm (5.5 in)

The wettest day on record for each calendar month at Stilbaai (Bos). The most was 140.0 mm (5.5 in) on 29 June 1978.

Record daily precipitation for each month at Stilbaai (Bos)
Month	Record daily precipitation (mm)	Date
Jan	74.9 mm (2.9 in)	11 January 1951
Feb	45.0 mm (1.8 in)	28 February 1979
Mar	71.9 mm (2.8 in)	13 March 1939
Apr	71.5 mm (2.8 in)	26 April 1981
May	62.0 mm (2.4 in)	12 May 1959
Jun	140.0 mm (5.5 in)	29 June 1978
Jul	87.6 mm (3.4 in)	13 July 1931
Aug	73.0 mm (2.9 in)	20 August 1962
Sep	67.3 mm (2.6 in)	23 September 1932
Oct	96.3 mm (3.8 in)	10 October 1934
Nov	93.2 mm (3.7 in)	23 November 1928
Dec	58.0 mm (2.3 in)	23 December 1994

Latest Records

Latest records at Stilbaai (Bos)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 October 1997	Stilbaai (Bos), ZA	daily rain	26.0 mm (1.0 in)	18.0 mm (0.7 in)	23 years	32 of 100 (Routine)
7 September 1997	Stilbaai (Bos), ZA	daily rain	14.5 mm (0.6 in)	2.5 mm (0.10 in)	14 years	14 of 100 (Routine)
26 May 1997	Stilbaai (Bos), ZA	daily rain	21.0 mm (0.8 in)	6.0 mm (0.24 in)	30 years	20 of 100 (Routine)
25 May 1997	Stilbaai (Bos), ZA	daily rain	24.0 mm (0.9 in)	2.0 mm (0.08 in)	35 years	19 of 100 (Routine)
29 March 1997	Stilbaai (Bos), ZA	daily rain	15.0 mm (0.6 in)	2.5 mm (0.10 in)	4 years	11 of 100 (Routine)
17 December 1996	Stilbaai (Bos), ZA	daily rain	25.5 mm (1.0 in)	15.5 mm (0.6 in)	36 years	37 of 100 (Notable)
25 November 1996	Stilbaai (Bos), ZA	daily rain	6.0 mm (0.24 in)	2.2 mm (0.09 in)	55 years	20 of 100 (Routine)
22 October 1996	Stilbaai (Bos), ZA	daily rain	34.0 mm (1.3 in)	10.4 mm (0.4 in)	70 years	39 of 100 (Notable)
17 September 1996	Stilbaai (Bos), ZA	daily rain	11.5 mm (0.5 in)	4.0 mm (0.16 in)	1 year	12 of 100 (Routine)
11 March 1996	Stilbaai (Bos), ZA	daily rain	13.0 mm (0.5 in)	2.9 mm (0.11 in)	18 years	15 of 100 (Routine)
13 February 1996	Stilbaai (Bos), ZA	daily rain	17.5 mm (0.7 in)	4.0 mm (0.16 in)	52 years	20 of 100 (Routine)
26 December 1995	Stilbaai (Bos), ZA	daily rain	11.5 mm (0.5 in)	4.1 mm (0.16 in)	49 years	20 of 100 (Routine)
18 December 1995	Stilbaai (Bos), ZA	daily rain	7.5 mm (0.30 in)	2.5 mm (0.10 in)	36 years	20 of 100 (Routine)
6 December 1995	Stilbaai (Bos), ZA	daily rain	13.0 mm (0.5 in)	4.0 mm (0.16 in)	24 years	19 of 100 (Routine)
29 November 1995	Stilbaai (Bos), ZA	daily rain	53.0 mm (2.1 in)	37.8 mm (1.5 in)	64 years	62 of 100 (Major)
17 September 1995	Stilbaai (Bos), ZA	daily rain	7.5 mm (0.30 in)	1.9 mm (0.07 in)	52 years	20 of 100 (Routine)
21 August 1995	Stilbaai (Bos), ZA	daily rain	13.0 mm (0.5 in)	5.0 mm (0.20 in)	20 years	19 of 100 (Routine)
26 July 1995	Stilbaai (Bos), ZA	daily rain	25.0 mm (1.0 in)	8.0 mm (0.31 in)	48 years	29 of 100 (Routine)
20 May 1995	Stilbaai (Bos), ZA	daily rain	26.0 mm (1.0 in)	1.2 mm (0.05 in)	40 years	20 of 100 (Routine)
15 February 1995	Stilbaai (Bos), ZA	daily rain	16.0 mm (0.6 in)	5.5 mm (0.22 in)	24 years	20 of 100 (Routine)

Extremes by Year

1924 to 1997

Yearly extremes at Stilbaai (Bos): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	140.0 mm (5.5 in)	1978	39.3 mm (1.5 in)	74
Wettest five days (Rx5day)	209.5 mm (8.2 in)	1928	63.7 mm (2.5 in)	74
Longest dry spell (CDD)	75 days	1932	31 days	74

Wettest day (Rx1day)

The wettest day of the year at Stilbaai (Bos), 1924 to 1997. The record is 140.0 mm (5.5 in) in 1978, marked on the chart; the median year is 39.3 mm (1.5 in).

Wettest day (Rx1day) at Stilbaai (Bos) by year
Year	Wettest day (Rx1day)
1924	24.9 mm (1.0 in)
1925	25.4 mm (1.0 in)
1926	71.1 mm (2.8 in)
1927	27.2 mm (1.1 in)
1928	93.2 mm (3.7 in)
1929	27.2 mm (1.1 in)
1930	36.3 mm (1.4 in)
1931	87.6 mm (3.4 in)
1932	67.3 mm (2.6 in)
1933	31.8 mm (1.3 in)
1934	96.3 mm (3.8 in)
1935	33.5 mm (1.3 in)
1936	36.3 mm (1.4 in)
1937	25.4 mm (1.0 in)
1938	29.7 mm (1.2 in)
1939	71.9 mm (2.8 in)
1940	46.0 mm (1.8 in)
1941	36.1 mm (1.4 in)
1942	21.8 mm (0.9 in)
1943	56.4 mm (2.2 in)
1944	27.4 mm (1.1 in)
1945	43.7 mm (1.7 in)
1946	30.5 mm (1.2 in)
1947	35.3 mm (1.4 in)
1948	54.6 mm (2.1 in)
1949	49.0 mm (1.9 in)
1950	27.4 mm (1.1 in)
1951	74.9 mm (2.9 in)
1952	35.3 mm (1.4 in)
1953	34.0 mm (1.3 in)
1954	39.5 mm (1.6 in)
1955	25.2 mm (1.0 in)
1956	28.0 mm (1.1 in)
1957	48.5 mm (1.9 in)
1958	60.0 mm (2.4 in)
1959	76.0 mm (3.0 in)
1960	44.0 mm (1.7 in)
1961	55.0 mm (2.2 in)
1962	73.0 mm (2.9 in)
1963	24.0 mm (0.9 in)
1964	45.5 mm (1.8 in)
1965	45.0 mm (1.8 in)
1966	28.0 mm (1.1 in)
1967	43.0 mm (1.7 in)
1968	48.0 mm (1.9 in)
1969	25.5 mm (1.0 in)
1970	27.5 mm (1.1 in)
1971	35.0 mm (1.4 in)
1972	39.0 mm (1.5 in)
1973	26.0 mm (1.0 in)
1974	40.0 mm (1.6 in)
1975	42.5 mm (1.7 in)
1976	32.0 mm (1.3 in)
1977	39.0 mm (1.5 in)
1978	140.0 mm (5.5 in)
1979	60.0 mm (2.4 in)
1980	42.5 mm (1.7 in)
1981	71.5 mm (2.8 in)
1982	34.0 mm (1.3 in)
1983	36.0 mm (1.4 in)
1984	33.5 mm (1.3 in)
1985	38.0 mm (1.5 in)
1986	69.0 mm (2.7 in)
1987	54.0 mm (2.1 in)
1988	30.0 mm (1.2 in)
1989	31.5 mm (1.2 in)
1990	47.0 mm (1.9 in)
1991	40.6 mm (1.6 in)
1992	41.5 mm (1.6 in)
1993	41.0 mm (1.6 in)
1994	58.0 mm (2.3 in)
1995	53.0 mm (2.1 in)
1996	34.0 mm (1.3 in)
1997	36.0 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Stilbaai (Bos), 1924 to 1997. The record is 209.5 mm (8.2 in) in 1928, marked on the chart; the median year is 63.7 mm (2.5 in).

Wettest five days (Rx5day) at Stilbaai (Bos) by year
Year	Wettest five days (Rx5day)
1924	36.8 mm (1.4 in)
1925	41.7 mm (1.6 in)
1926	99.5 mm (3.9 in)
1927	49.3 mm (1.9 in)
1928	209.5 mm (8.2 in)
1929	67.1 mm (2.6 in)
1930	66.0 mm (2.6 in)
1931	148.6 mm (5.9 in)
1932	98.7 mm (3.9 in)
1933	63.3 mm (2.5 in)
1934	130.4 mm (5.1 in)
1935	56.7 mm (2.2 in)
1936	70.3 mm (2.8 in)
1937	25.7 mm (1.0 in)
1938	44.2 mm (1.7 in)
1939	77.2 mm (3.0 in)
1940	84.6 mm (3.3 in)
1941	45.3 mm (1.8 in)
1942	54.6 mm (2.1 in)
1943	69.6 mm (2.7 in)
1944	64.7 mm (2.5 in)
1945	71.4 mm (2.8 in)
1946	77.9 mm (3.1 in)
1947	58.2 mm (2.3 in)
1948	130.0 mm (5.1 in)
1949	82.8 mm (3.3 in)
1950	38.4 mm (1.5 in)
1951	77.9 mm (3.1 in)
1952	85.7 mm (3.4 in)
1953	55.0 mm (2.2 in)
1954	79.3 mm (3.1 in)
1955	45.8 mm (1.8 in)
1956	60.0 mm (2.4 in)
1957	53.0 mm (2.1 in)
1958	71.0 mm (2.8 in)
1959	96.0 mm (3.8 in)
1960	64.0 mm (2.5 in)
1961	88.0 mm (3.5 in)
1962	94.5 mm (3.7 in)
1963	42.0 mm (1.7 in)
1964	58.0 mm (2.3 in)
1965	56.0 mm (2.2 in)
1966	51.5 mm (2.0 in)
1967	69.5 mm (2.7 in)
1968	48.0 mm (1.9 in)
1969	34.5 mm (1.4 in)
1970	39.0 mm (1.5 in)
1971	57.0 mm (2.2 in)
1972	80.0 mm (3.1 in)
1973	34.5 mm (1.4 in)
1974	48.0 mm (1.9 in)
1975	74.5 mm (2.9 in)
1976	57.0 mm (2.2 in)
1977	44.2 mm (1.7 in)
1978	155.0 mm (6.1 in)
1979	110.0 mm (4.3 in)
1980	60.0 mm (2.4 in)
1981	115.0 mm (4.5 in)
1982	68.5 mm (2.7 in)
1983	72.0 mm (2.8 in)
1984	49.0 mm (1.9 in)
1985	48.0 mm (1.9 in)
1986	168.5 mm (6.6 in)
1987	54.0 mm (2.1 in)
1988	37.5 mm (1.5 in)
1989	52.5 mm (2.1 in)
1990	52.3 mm (2.1 in)
1991	40.6 mm (1.6 in)
1992	65.0 mm (2.6 in)
1993	59.5 mm (2.3 in)
1994	73.2 mm (2.9 in)
1995	86.0 mm (3.4 in)
1996	74.0 mm (2.9 in)
1997	60.5 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Stilbaai (Bos), 1924 to 1997. The record is 75 days in 1932, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Stilbaai (Bos) by year
Year	Longest dry spell (CDD)
1924	28 days
1925	33 days
1926	34 days
1927	38 days
1928	40 days
1929	38 days
1930	28 days
1931	58 days
1932	75 days
1933	28 days
1934	36 days
1935	31 days
1936	56 days
1937	35 days
1938	45 days
1939	31 days
1940	38 days
1941	28 days
1942	24 days
1943	19 days
1944	22 days
1945	23 days
1946	29 days
1947	27 days
1948	27 days
1949	29 days
1950	18 days
1951	14 days
1952	27 days
1953	32 days
1954	25 days
1955	16 days
1956	40 days
1957	69 days
1958	30 days
1959	32 days
1960	32 days
1961	47 days
1962	31 days
1963	35 days
1964	40 days
1965	42 days
1966	30 days
1967	18 days
1968	42 days
1969	34 days
1970	30 days
1971	30 days
1972	31 days
1973	38 days
1974	39 days
1975	37 days
1976	26 days
1977	29 days
1978	27 days
1979	22 days
1980	31 days
1981	24 days
1982	25 days
1983	21 days
1984	19 days
1985	18 days
1986	33 days
1987	22 days
1988	33 days
1989	25 days
1990	49 days
1991	22 days
1992	23 days
1993	31 days
1994	58 days
1995	26 days
1996	42 days
1997	47 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

70 years, 1925 to 1997

A day with at least 39.5 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 130.4 mm (5.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Stilbaai (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	39.5 mm (1.6 in)
5 years	55.9 mm (2.2 in)
10 years	69.3 mm (2.7 in)
25 years	90.0 mm (3.5 in)
50 years	108.6 mm (4.3 in)
100 years	130.4 mm (5.1 in)	Longer than the 70 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, 70 years of values from 1925 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: 140.0 mm (5.5 in) in 1978; 96.3 mm (3.8 in) in 1934; 93.2 mm (3.7 in) in 1928.

Download the Data

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