Wonderboom Weather Records (SF002330490)

Record envelope, standing records and threshold days for Wonderboom (SF002330490), South Africa, with 81 years of record.

Key Facts for Wonderboom

Wonderboom (SF002330490) is a weather station in South Africa at -29.80 latitude and 27.05 longitude, 1,494 m (4,902 ft) above sea level.
The station reports from 1906 to 1986, 81 years of record.
0 records set at Wonderboom still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Wonderboom set a daily record precipitation of 28.3 mm (1.1 in) on 16 January 1986.

About the Station

Location: South Africa, -29.80 latitude, 27.05 longitude.
Elevation: 1,494 m (4,902 ft).
Period of record: 1906 to 1986, 81 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 Wonderboom. 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 Wonderboom, 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 Wonderboom still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Wonderboom between 25 February 1956 and 16 December 1961. Each dot is a new record.

When Wonderboom set new all-time records
Date	Kind	Detail
1956-02-25	Record daily precipitation	Record daily precipitation 107.2 mm (4.2 in)
1961-12-16	Record daily precipitation	Record daily precipitation 126.5 mm (5.0 in)

Wettest Day of Each Month

Dec: 126.5 mm (5.0 in)

The wettest day on record for each calendar month at Wonderboom. The most was 126.5 mm (5.0 in) on 16 December 1961.

Record daily precipitation for each month at Wonderboom
Month	Record daily precipitation (mm)	Date
Jan	82.2 mm (3.2 in)	21 January 1966
Feb	107.2 mm (4.2 in)	25 February 1956
Mar	65.0 mm (2.6 in)	21 March 1956
Apr	73.1 mm (2.9 in)	15 April 1976
May	69.1 mm (2.7 in)	1 May 1971
Jun	60.5 mm (2.4 in)	15 June 1922
Jul	54.3 mm (2.1 in)	23 July 1983
Aug	64.0 mm (2.5 in)	26 August 1970
Sep	49.5 mm (1.9 in)	30 September 1910
Oct	69.6 mm (2.7 in)	30 October 1985
Nov	84.1 mm (3.3 in)	9 November 1940
Dec	126.5 mm (5.0 in)	16 December 1961

Latest Records

Latest records at Wonderboom
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 January 1986	Wonderboom, ZA	daily rain	28.3 mm (1.1 in)	0.4 mm (0.02 in)	40 years	20 of 100 (Routine)
30 October 1985	Wonderboom, ZA	monthly rain	69.6 mm (2.7 in)	3.3 mm (0.13 in)	0 years	20 of 100 (Routine)
29 October 1985	Wonderboom, ZA	monthly rain	66.3 mm (2.6 in)	5.3 mm (0.21 in)	41 years	34 of 100 (Routine)
23 June 1985	Wonderboom, ZA	daily rain	57.3 mm (2.3 in)	57.3 mm (2.3 in)	76 years	71 of 100 (Major)
18 February 1985	Wonderboom, ZA	daily rain	47.3 mm (1.9 in)	26.2 mm (1.0 in)	47 years	40 of 100 (Notable)
15 January 1985	Wonderboom, ZA	daily rain	34.3 mm (1.4 in)	18.0 mm (0.7 in)	67 years	41 of 100 (Notable)
14 January 1985	Wonderboom, ZA	daily rain	46.8 mm (1.8 in)	16.3 mm (0.6 in)	51 years	35 of 100 (Notable)
27 November 1984	Wonderboom, ZA	daily rain	49.0 mm (1.9 in)	14.5 mm (0.6 in)	42 years	30 of 100 (Routine)
5 March 1984	Wonderboom, ZA	daily rain	41.5 mm (1.6 in)	4.4 mm (0.17 in)	60 years	28 of 100 (Routine)
1 January 1984	Wonderboom, ZA	daily rain	47.3 mm (1.9 in)	16.8 mm (0.7 in)	32 years	29 of 100 (Routine)
23 July 1983	Wonderboom, ZA	monthly rain	54.3 mm (2.1 in)	11.1 mm (0.4 in)	13 years	33 of 100 (Routine)
11 June 1983	Wonderboom, ZA	daily rain	14.0 mm (0.6 in)	9.4 mm (0.37 in)	44 years	20 of 100 (Routine)
18 May 1983	Wonderboom, ZA	daily rain	6.3 mm (0.25 in)	6.3 mm (0.25 in)	76 years	20 of 100 (Routine)
15 November 1982	Wonderboom, ZA	daily rain	51.3 mm (2.0 in)	13.7 mm (0.5 in)	56 years	35 of 100 (Notable)
30 October 1982	Wonderboom, ZA	daily rain	30.8 mm (1.2 in)	6.2 mm (0.24 in)	55 years	28 of 100 (Routine)
1 September 1982	Wonderboom, ZA	daily rain	30.3 mm (1.2 in)	6.7 mm (0.26 in)	47 years	27 of 100 (Routine)
24 July 1982	Wonderboom, ZA	daily rain	16.5 mm (0.6 in)	7.1 mm (0.28 in)	11 years	18 of 100 (Routine)
2 July 1982	Wonderboom, ZA	daily rain	14.0 mm (0.6 in)	10.0 mm (0.4 in)	24 years	20 of 100 (Routine)
1 July 1982	Wonderboom, ZA	daily rain	9.5 mm (0.37 in)	4.0 mm (0.16 in)	19 years	16 of 100 (Routine)
4 June 1982	Wonderboom, ZA	daily rain	13.3 mm (0.5 in)	1.6 mm (0.06 in)	9 years	10 of 100 (Routine)

Extremes by Year

1906 to 1986

Yearly extremes at Wonderboom: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	126.5 mm (5.0 in)	1961	53.1 mm (2.1 in)	78
Wettest five days (Rx5day)	214.1 mm (8.4 in)	1929	88.3 mm (3.5 in)	78
Longest dry spell (CDD)	173 days	1948	60 days	78

Wettest day (Rx1day)

The wettest day of the year at Wonderboom, 1906 to 1986. The record is 126.5 mm (5.0 in) in 1961, marked on the chart; the median year is 53.1 mm (2.1 in).

Wettest day (Rx1day) at Wonderboom by year
Year	Wettest day (Rx1day)
1906	30.7 mm (1.2 in)
1907	52.6 mm (2.1 in)
1908	40.1 mm (1.6 in)
1909	64.0 mm (2.5 in)
1910	53.3 mm (2.1 in)
1911	52.6 mm (2.1 in)
1912	33.0 mm (1.3 in)
1913	37.6 mm (1.5 in)
1914	76.7 mm (3.0 in)
1915	35.6 mm (1.4 in)
1916	67.3 mm (2.6 in)
1917	36.8 mm (1.4 in)
1918	36.8 mm (1.4 in)
1919	78.7 mm (3.1 in)
1920	66.0 mm (2.6 in)
1921	88.9 mm (3.5 in)
1922	60.5 mm (2.4 in)
1923	81.5 mm (3.2 in)
1924	52.1 mm (2.1 in)
1925	59.7 mm (2.4 in)
1926	32.5 mm (1.3 in)
1927	55.4 mm (2.2 in)
1928	33.0 mm (1.3 in)
1929	52.8 mm (2.1 in)
1930	35.6 mm (1.4 in)
1931	66.5 mm (2.6 in)
1932	30.7 mm (1.2 in)
1933	49.3 mm (1.9 in)
1934	51.1 mm (2.0 in)
1935	52.3 mm (2.1 in)
1936	61.2 mm (2.4 in)
1937	49.0 mm (1.9 in)
1938	41.4 mm (1.6 in)
1939	39.4 mm (1.6 in)
1940	84.1 mm (3.3 in)
1941	88.9 mm (3.5 in)
1942	38.1 mm (1.5 in)
1943	61.0 mm (2.4 in)
1944	40.6 mm (1.6 in)
1945	53.6 mm (2.1 in)
1946	53.8 mm (2.1 in)
1947	61.0 mm (2.4 in)
1948	80.0 mm (3.1 in)
1949	48.3 mm (1.9 in)
1950	63.5 mm (2.5 in)
1951	53.3 mm (2.1 in)
1955	31.0 mm (1.2 in)
1956	107.2 mm (4.2 in)
1957	52.0 mm (2.0 in)
1958	46.5 mm (1.8 in)
1959	35.6 mm (1.4 in)
1960	51.8 mm (2.0 in)
1961	126.5 mm (5.0 in)
1962	54.3 mm (2.1 in)
1963	44.3 mm (1.7 in)
1964	51.9 mm (2.0 in)
1965	34.0 mm (1.3 in)
1966	82.2 mm (3.2 in)
1967	53.6 mm (2.1 in)
1968	65.9 mm (2.6 in)
1969	67.3 mm (2.6 in)
1970	64.0 mm (2.5 in)
1971	69.1 mm (2.7 in)
1972	106.7 mm (4.2 in)
1973	34.3 mm (1.4 in)
1974	46.7 mm (1.8 in)
1975	86.2 mm (3.4 in)
1976	73.1 mm (2.9 in)
1977	51.5 mm (2.0 in)
1978	56.9 mm (2.2 in)
1979	30.8 mm (1.2 in)
1980	63.0 mm (2.5 in)
1981	60.1 mm (2.4 in)
1982	51.3 mm (2.0 in)
1983	54.3 mm (2.1 in)
1984	49.0 mm (1.9 in)
1985	69.6 mm (2.7 in)
1986	36.0 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wonderboom, 1906 to 1986. The record is 214.1 mm (8.4 in) in 1929, marked on the chart; the median year is 88.3 mm (3.5 in).

Wettest five days (Rx5day) at Wonderboom by year
Year	Wettest five days (Rx5day)
1906	49.0 mm (1.9 in)
1907	78.5 mm (3.1 in)
1908	57.4 mm (2.3 in)
1909	74.7 mm (2.9 in)
1910	75.1 mm (3.0 in)
1911	74.7 mm (2.9 in)
1912	33.0 mm (1.3 in)
1913	52.5 mm (2.1 in)
1914	76.7 mm (3.0 in)
1915	63.8 mm (2.5 in)
1916	94.0 mm (3.7 in)
1917	81.3 mm (3.2 in)
1918	50.5 mm (2.0 in)
1919	82.5 mm (3.2 in)
1920	165.1 mm (6.5 in)
1921	88.9 mm (3.5 in)
1922	65.5 mm (2.6 in)
1923	107.1 mm (4.2 in)
1924	119.7 mm (4.7 in)
1925	94.0 mm (3.7 in)
1926	53.3 mm (2.1 in)
1927	107.0 mm (4.2 in)
1928	58.5 mm (2.3 in)
1929	214.1 mm (8.4 in)
1930	35.6 mm (1.4 in)
1931	88.9 mm (3.5 in)
1932	36.1 mm (1.4 in)
1933	153.5 mm (6.0 in)
1934	91.4 mm (3.6 in)
1935	81.5 mm (3.2 in)
1936	81.0 mm (3.2 in)
1937	93.5 mm (3.7 in)
1938	101.4 mm (4.0 in)
1939	68.6 mm (2.7 in)
1940	99.8 mm (3.9 in)
1941	108.0 mm (4.3 in)
1942	90.9 mm (3.6 in)
1943	139.5 mm (5.5 in)
1944	80.3 mm (3.2 in)
1945	102.9 mm (4.1 in)
1946	94.2 mm (3.7 in)
1947	102.4 mm (4.0 in)
1948	116.1 mm (4.6 in)
1949	92.8 mm (3.7 in)
1950	119.1 mm (4.7 in)
1951	53.3 mm (2.1 in)
1955	63.5 mm (2.5 in)
1956	140.4 mm (5.5 in)
1957	86.5 mm (3.4 in)
1958	77.5 mm (3.1 in)
1959	56.1 mm (2.2 in)
1960	87.6 mm (3.4 in)
1961	161.1 mm (6.3 in)
1962	98.8 mm (3.9 in)
1963	93.2 mm (3.7 in)
1964	95.5 mm (3.8 in)
1965	46.3 mm (1.8 in)
1966	177.3 mm (7.0 in)
1967	106.4 mm (4.2 in)
1968	92.7 mm (3.6 in)
1969	107.9 mm (4.2 in)
1970	74.4 mm (2.9 in)
1971	102.6 mm (4.0 in)
1972	151.8 mm (6.0 in)
1973	54.4 mm (2.1 in)
1974	86.2 mm (3.4 in)
1975	117.8 mm (4.6 in)
1976	124.5 mm (4.9 in)
1977	66.5 mm (2.6 in)
1978	74.3 mm (2.9 in)
1979	61.3 mm (2.4 in)
1980	107.3 mm (4.2 in)
1981	70.1 mm (2.8 in)
1982	74.8 mm (2.9 in)
1983	68.6 mm (2.7 in)
1984	97.1 mm (3.8 in)
1985	143.4 mm (5.6 in)
1986	66.9 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wonderboom, 1906 to 1986. The record is 173 days in 1948, marked on the chart; the median year is 60 days.

Longest dry spell (CDD) at Wonderboom by year
Year	Longest dry spell (CDD)
1906	14 days
1907	13 days
1908	38 days
1909	96 days
1910	44 days
1911	48 days
1912	39 days
1913	75 days
1914	51 days
1915	67 days
1916	64 days
1917	29 days
1918	62 days
1919	67 days
1920	97 days
1921	136 days
1922	48 days
1923	53 days
1924	37 days
1925	54 days
1926	149 days
1927	69 days
1928	146 days
1929	57 days
1930	38 days
1931	68 days
1932	53 days
1933	30 days
1934	55 days
1935	51 days
1936	90 days
1937	114 days
1938	90 days
1939	42 days
1940	86 days
1941	73 days
1942	111 days
1943	48 days
1944	72 days
1945	144 days
1946	61 days
1947	52 days
1948	173 days
1949	91 days
1950	42 days
1951	32 days
1955	17 days
1956	61 days
1957	42 days
1958	107 days
1959	57 days
1960	54 days
1961	70 days
1962	155 days
1963	65 days
1964	45 days
1965	48 days
1966	129 days
1967	74 days
1968	93 days
1969	40 days
1970	40 days
1971	58 days
1972	118 days
1973	52 days
1974	66 days
1975	64 days
1976	94 days
1977	63 days
1978	38 days
1979	42 days
1980	46 days
1981	75 days
1982	41 days
1983	45 days
1984	77 days
1985	127 days
1986	53 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

65 years, 1908 to 1985

A day with at least 54.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 122.7 mm (4.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Wonderboom: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	54.4 mm (2.1 in)
5 years	72.1 mm (2.8 in)
10 years	84.0 mm (3.3 in)
25 years	99.4 mm (3.9 in)
50 years	111.0 mm (4.4 in)
100 years	122.7 mm (4.8 in)	Longer than the 65 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, 65 years of values from 1908 to 1985.

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: 126.5 mm (5.0 in) in 1961; 107.2 mm (4.2 in) in 1956; 106.7 mm (4.2 in) in 1972.

Download the Data

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