Stilbaai (Bos) Threshold Days by Year (SF000107420)

4 fixed thresholds counted per year at Stilbaai (Bos) (SF000107420): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Stilbaai (Bos) Thresholds

Stilbaai (Bos): days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1959 with 25.
Stilbaai (Bos): days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 1992 with 12.
Stilbaai (Bos): days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1981 with 3.
Stilbaai (Bos): days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1978 with 1.
4 fixed thresholds have at least one qualifying day at Stilbaai (Bos).

Days with 10 mm (0.39 in) or more of precipitation

70 years with a qualifying day

Days per year at Stilbaai (Bos) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 1959.

Days with 10 mm (0.39 in) or more of precipitation per year at Stilbaai (Bos)
Year	Days	Decade average
1925	9	10.3
1927	8	10.3
1928	9	10.3
1929	15	10.3
1930	10	11.4
1931	15	11.4
1932	11	11.4
1933	13	11.4
1934	14	11.4
1935	10	11.4
1936	10	11.4
1937	9	11.4
1938	9	11.4
1939	13	11.4
1940	17	12.9
1941	14	12.9
1942	17	12.9
1943	13	12.9
1944	15	12.9
1945	11	12.9
1946	12	12.9
1947	12	12.9
1948	11	12.9
1949	7	12.9
1950	8	14.2
1951	13	14.2
1952	9	14.2
1954	16	14.2
1955	13	14.2
1956	10	14.2
1957	17	14.2
1958	17	14.2
1959	25	14.2
1960	10	11
1961	10	11
1962	13	11
1963	8	11
1964	14	11
1965	18	11
1966	12	11
1967	12	11
1968	8	11
1969	5	11
1970	5	11.2
1971	17	11.2
1972	9	11.2
1973	7	11.2
1974	9	11.2
1976	16	11.2
1977	19	11.2
1978	8	11.2
1979	11	11.2
1980	7	13.7
1981	15	13.7
1982	17	13.7
1983	18	13.7
1984	10	13.7
1985	17	13.7
1986	14	13.7
1987	9	13.7
1988	17	13.7
1989	13	13.7
1990	16	15.6
1991	17	15.6
1992	21	15.6
1993	16	15.6
1994	16	15.6
1995	12	15.6
1996	12	15.6
1997	15	15.6

For each year, a bar from the first to the last day at Stilbaai (Bos) meeting 10 mm (0.39 in).

First to last qualifying date each year at Stilbaai (Bos)
Year	First date	Last date
1925	1925-01-13	1925-10-22
1927	1927-01-05	1927-12-30
1928	1928-02-03	1928-12-21
1929	1929-02-13	1929-12-29
1930	1930-02-01	1930-11-29
1931	1931-02-28	1931-12-31
1932	1932-02-11	1932-12-08
1933	1933-02-22	1933-11-27
1934	1934-01-12	1934-11-11
1935	1935-02-08	1935-12-15
1936	1936-03-10	1936-12-04
1937	1937-03-04	1937-12-20
1938	1938-01-05	1938-12-31
1939	1939-02-01	1939-11-03
1940	1940-01-20	1940-11-22
1941	1941-03-21	1941-10-29
1942	1942-01-12	1942-12-04
1943	1943-01-21	1943-12-02
1944	1944-02-17	1944-10-11
1945	1945-05-11	1945-11-10
1946	1946-01-21	1946-10-12
1947	1947-03-05	1947-11-12
1948	1948-01-21	1948-10-11
1949	1949-02-05	1949-11-16
1950	1950-05-23	1950-11-10
1951	1951-01-11	1951-10-12
1952	1952-01-30	1952-11-18
1954	1954-02-10	1954-11-05
1955	1955-01-26	1955-12-01
1956	1956-02-17	1956-08-27
1957	1957-02-20	1957-10-02
1958	1958-02-15	1958-11-12
1959	1959-01-11	1959-12-27
1960	1960-01-04	1960-12-17
1961	1961-01-27	1961-10-27
1962	1962-01-18	1962-08-26
1963	1963-01-03	1963-12-21
1964	1964-01-08	1964-11-20
1965	1965-02-17	1965-12-16
1966	1966-03-20	1966-11-13
1967	1967-03-17	1967-11-22
1968	1968-02-16	1968-11-13
1969	1969-02-10	1969-08-27
1970	1970-01-31	1970-12-05
1971	1971-02-15	1971-11-01
1972	1972-01-09	1972-09-20
1973	1973-05-01	1973-12-05
1974	1974-03-17	1974-09-02
1976	1976-03-26	1976-12-31
1977	1977-02-12	1977-12-31
1978	1978-03-11	1978-07-23
1979	1979-01-20	1979-12-24
1980	1980-01-04	1980-11-30
1981	1981-01-23	1981-11-07
1982	1982-01-11	1982-11-15
1983	1983-02-26	1983-12-21
1984	1984-03-20	1984-12-04
1985	1985-01-13	1985-10-29
1986	1986-01-03	1986-11-07
1987	1987-04-14	1987-12-22
1988	1988-03-06	1988-12-28
1989	1989-03-10	1989-11-15
1990	1990-02-20	1990-12-23
1991	1991-01-07	1991-12-03
1992	1992-02-01	1992-11-12
1993	1993-01-30	1993-12-02
1994	1994-03-07	1994-12-23
1995	1995-02-01	1995-12-26
1996	1996-02-13	1996-12-28
1997	1997-02-25	1997-11-21

Every Fixed Threshold

Fixed thresholds at Stilbaai (Bos)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	70	25	1959	15
25 mm (0.98 in): Days with 25 mm or more rain	68	12	1992	3
50 mm (1.97 in): Days with 50 mm or more rain	19	3	1981	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1978	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1925.

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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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Stilbaai (Bos) Threshold Days by Year (SF000107420)

Key Facts for Stilbaai (Bos) Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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