Gannapan Weather Records (SF001943230)

Record envelope, standing records and threshold days for Gannapan (SF001943230), South Africa, with 104 years of record.

Key Facts for Gannapan

Gannapan (SF001943230) is a weather station in South Africa at -30.38 latitude and 22.18 longitude, 1,064 m (3,491 ft) above sea level.
The station reports from 1880 to 1983, 104 years of record.
0 records set at Gannapan still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Gannapan set a daily record precipitation of 24.5 mm (1.0 in) on 2 November 1983.

About the Station

Location: South Africa, -30.38 latitude, 22.18 longitude.
Elevation: 1,064 m (3,491 ft).
Period of record: 1880 to 1983, 104 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 Gannapan. 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 Gannapan, 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 Gannapan still stand.

All-Time Record Progression

3 new records

3 all-time records were set at Gannapan between 27 March 1936 and 18 March 1961. Each dot is a new record.

When Gannapan set new all-time records
Date	Kind	Detail
1936-03-27	Record daily precipitation	Record daily precipitation 68.6 mm (2.7 in)
1955-12-03	Record daily precipitation	Record daily precipitation 80.5 mm (3.2 in)
1961-03-18	Record daily precipitation	Record daily precipitation 102.0 mm (4.0 in)

Wettest Day of Each Month

Mar: 102.0 mm (4.0 in)

The wettest day on record for each calendar month at Gannapan. The most was 102.0 mm (4.0 in) on 18 March 1961.

Record daily precipitation for each month at Gannapan
Month	Record daily precipitation (mm)	Date
Jan	67.5 mm (2.7 in)	7 January 1972
Feb	78.0 mm (3.1 in)	21 February 1974
Mar	102.0 mm (4.0 in)	18 March 1961
Apr	46.5 mm (1.8 in)	10 April 1969
May	57.2 mm (2.3 in)	4 May 1923
Jun	40.5 mm (1.6 in)	15 June 1983
Jul	43.2 mm (1.7 in)	25 July 1908
Aug	43.3 mm (1.7 in)	22 August 1981
Sep	45.7 mm (1.8 in)	29 September 1882
Oct	53.3 mm (2.1 in)	22 October 1950
Nov	58.5 mm (2.3 in)	29 November 1977
Dec	80.5 mm (3.2 in)	3 December 1955

Latest Records

Latest records at Gannapan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 November 1983	Gannapan, ZA	daily rain	24.5 mm (1.0 in)	3.2 mm (0.13 in)	48 years	20 of 100 (Routine)
10 September 1983	Gannapan, ZA	daily rain	18.5 mm (0.7 in)	18.5 mm (0.7 in)	101 years	20 of 100 (Routine)
15 June 1983	Gannapan, ZA	monthly rain	40.5 mm (1.6 in)	8.5 mm (0.33 in)	28 years	38 of 100 (Notable)
2 September 1982	Gannapan, ZA	daily rain	20.5 mm (0.8 in)	15.9 mm (0.6 in)	36 years	20 of 100 (Routine)
19 February 1982	Gannapan, ZA	daily rain	39.0 mm (1.5 in)	28.8 mm (1.1 in)	58 years	52 of 100 (Notable)
28 August 1981	Gannapan, ZA	daily rain	8.0 mm (0.31 in)	8.0 mm (0.31 in)	99 years	20 of 100 (Routine)
27 August 1981	Gannapan, ZA	daily rain	19.5 mm (0.8 in)	16.0 mm (0.6 in)	14 years	20 of 100 (Routine)
22 August 1981	Gannapan, ZA	monthly rain	43.3 mm (1.7 in)	9.0 mm (0.35 in)	52 years	46 of 100 (Notable)
10 May 1981	Gannapan, ZA	daily rain	19.0 mm (0.7 in)	19.0 mm (0.7 in)	99 years	20 of 100 (Routine)
23 February 1981	Gannapan, ZA	daily rain	18.5 mm (0.7 in)	5.3 mm (0.21 in)	38 years	20 of 100 (Routine)
25 September 1980	Gannapan, ZA	daily rain	17.5 mm (0.7 in)	17.5 mm (0.7 in)	98 years	20 of 100 (Routine)
11 August 1980	Gannapan, ZA	daily rain	18.5 mm (0.7 in)	18.5 mm (0.7 in)	98 years	20 of 100 (Routine)
2 August 1980	Gannapan, ZA	daily rain	10.0 mm (0.4 in)	10.0 mm (0.4 in)	98 years	20 of 100 (Routine)
22 September 1978	Gannapan, ZA	daily rain	16.5 mm (0.6 in)	16.5 mm (0.6 in)	96 years	20 of 100 (Routine)
27 April 1978	Gannapan, ZA	daily rain	21.0 mm (0.8 in)	21.0 mm (0.8 in)	96 years	20 of 100 (Routine)
16 January 1978	Gannapan, ZA	daily rain	14.5 mm (0.6 in)	14.5 mm (0.6 in)	96 years	20 of 100 (Routine)
28 December 1977	Gannapan, ZA	daily rain	14.0 mm (0.6 in)	14.0 mm (0.6 in)	96 years	20 of 100 (Routine)
29 November 1977	Gannapan, ZA	monthly rain	58.5 mm (2.3 in)	15.8 mm (0.6 in)	84 years	59 of 100 (Notable)
13 April 1977	Gannapan, ZA	daily rain	34.0 mm (1.3 in)	28.9 mm (1.1 in)	95 years	66 of 100 (Major)
4 March 1977	Gannapan, ZA	daily rain	36.0 mm (1.4 in)	16.0 mm (0.6 in)	14 years	23 of 100 (Routine)

Extremes by Year

1880 to 1983

Yearly extremes at Gannapan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	102.0 mm (4.0 in)	1961	31.5 mm (1.2 in)	89
Wettest five days (Rx5day)	128.0 mm (5.0 in)	1972	38.1 mm (1.5 in)	89
Longest dry spell (CDD)	366 days	1920	141 days	89

Wettest day (Rx1day)

The wettest day of the year at Gannapan, 1880 to 1983. The record is 102.0 mm (4.0 in) in 1961, marked on the chart; the median year is 31.5 mm (1.2 in).

Wettest day (Rx1day) at Gannapan by year
Year	Wettest day (Rx1day)
1880	15.5 mm (0.6 in)
1881	26.2 mm (1.0 in)
1882	45.7 mm (1.8 in)
1891	38.1 mm (1.5 in)
1892	33.0 mm (1.3 in)
1893	43.7 mm (1.7 in)
1894	31.5 mm (1.2 in)
1895	32.5 mm (1.3 in)
1896	31.8 mm (1.3 in)
1897	25.4 mm (1.0 in)
1898	30.5 mm (1.2 in)
1899	28.7 mm (1.1 in)
1900	30.2 mm (1.2 in)
1901	38.1 mm (1.5 in)
1902	12.7 mm (0.5 in)
1903	0.0 mm (0.00 in)
1904	25.4 mm (1.0 in)
1905	20.3 mm (0.8 in)
1906	38.1 mm (1.5 in)
1907	38.1 mm (1.5 in)
1908	43.2 mm (1.7 in)
1914	9.1 mm (0.36 in)
1915	29.2 mm (1.1 in)
1916	13.0 mm (0.5 in)
1917	29.5 mm (1.2 in)
1918	0.0 mm (0.00 in)
1920	0.0 mm (0.00 in)
1922	0.0 mm (0.00 in)
1923	57.2 mm (2.3 in)
1924	26.9 mm (1.1 in)
1925	21.3 mm (0.8 in)
1926	3.6 mm (0.14 in)
1927	38.1 mm (1.5 in)
1928	57.2 mm (2.3 in)
1929	34.3 mm (1.4 in)
1930	27.7 mm (1.1 in)
1931	17.0 mm (0.7 in)
1932	26.9 mm (1.1 in)
1933	8.1 mm (0.32 in)
1934	33.5 mm (1.3 in)
1935	25.4 mm (1.0 in)
1936	68.6 mm (2.7 in)
1937	47.5 mm (1.9 in)
1938	23.6 mm (0.9 in)
1939	19.1 mm (0.8 in)
1940	36.6 mm (1.4 in)
1941	43.2 mm (1.7 in)
1942	34.0 mm (1.3 in)
1943	42.2 mm (1.7 in)
1944	63.2 mm (2.5 in)
1945	39.1 mm (1.5 in)
1946	34.3 mm (1.4 in)
1947	27.4 mm (1.1 in)
1948	40.6 mm (1.6 in)
1949	26.7 mm (1.1 in)
1950	53.3 mm (2.1 in)
1951	25.4 mm (1.0 in)
1952	55.9 mm (2.2 in)
1953	29.0 mm (1.1 in)
1954	64.2 mm (2.5 in)
1955	80.5 mm (3.2 in)
1956	24.0 mm (0.9 in)
1957	26.5 mm (1.0 in)
1958	46.5 mm (1.8 in)
1959	24.5 mm (1.0 in)
1960	14.5 mm (0.6 in)
1961	102.0 mm (4.0 in)
1962	19.5 mm (0.8 in)
1963	75.0 mm (3.0 in)
1964	17.5 mm (0.7 in)
1965	18.0 mm (0.7 in)
1966	62.4 mm (2.5 in)
1967	38.0 mm (1.5 in)
1968	41.3 mm (1.6 in)
1969	46.5 mm (1.8 in)
1970	28.5 mm (1.1 in)
1971	31.5 mm (1.2 in)
1972	67.5 mm (2.7 in)
1973	65.0 mm (2.6 in)
1974	78.0 mm (3.1 in)
1975	65.0 mm (2.6 in)
1976	26.0 mm (1.0 in)
1977	58.5 mm (2.3 in)
1978	21.0 mm (0.8 in)
1979	7.2 mm (0.28 in)
1980	18.5 mm (0.7 in)
1981	43.3 mm (1.7 in)
1982	39.0 mm (1.5 in)
1983	40.5 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Gannapan, 1880 to 1983. The record is 128.0 mm (5.0 in) in 1972, marked on the chart; the median year is 38.1 mm (1.5 in).

Wettest five days (Rx5day) at Gannapan by year
Year	Wettest five days (Rx5day)
1880	15.5 mm (0.6 in)
1881	58.7 mm (2.3 in)
1882	45.7 mm (1.8 in)
1891	38.1 mm (1.5 in)
1892	33.0 mm (1.3 in)
1893	43.7 mm (1.7 in)
1894	39.1 mm (1.5 in)
1895	32.5 mm (1.3 in)
1896	38.2 mm (1.5 in)
1897	38.1 mm (1.5 in)
1898	30.5 mm (1.2 in)
1899	42.9 mm (1.7 in)
1900	81.5 mm (3.2 in)
1901	38.1 mm (1.5 in)
1902	12.7 mm (0.5 in)
1903	0.0 mm (0.00 in)
1904	25.4 mm (1.0 in)
1905	20.3 mm (0.8 in)
1906	38.8 mm (1.5 in)
1907	38.1 mm (1.5 in)
1908	43.2 mm (1.7 in)
1914	9.6 mm (0.38 in)
1915	53.1 mm (2.1 in)
1916	29.2 mm (1.1 in)
1917	29.5 mm (1.2 in)
1918	0.0 mm (0.00 in)
1920	0.0 mm (0.00 in)
1922	0.0 mm (0.00 in)
1923	57.2 mm (2.3 in)
1924	38.9 mm (1.5 in)
1925	33.5 mm (1.3 in)
1926	6.9 mm (0.27 in)
1927	38.1 mm (1.5 in)
1928	57.2 mm (2.3 in)
1929	34.3 mm (1.4 in)
1930	27.7 mm (1.1 in)
1931	28.7 mm (1.1 in)
1932	33.1 mm (1.3 in)
1933	8.1 mm (0.32 in)
1934	58.9 mm (2.3 in)
1935	46.2 mm (1.8 in)
1936	96.0 mm (3.8 in)
1937	47.5 mm (1.9 in)
1938	36.3 mm (1.4 in)
1939	38.1 mm (1.5 in)
1940	41.6 mm (1.6 in)
1941	86.4 mm (3.4 in)
1942	34.0 mm (1.3 in)
1943	75.9 mm (3.0 in)
1944	99.0 mm (3.9 in)
1945	39.1 mm (1.5 in)
1946	34.3 mm (1.4 in)
1947	35.5 mm (1.4 in)
1948	63.5 mm (2.5 in)
1949	35.3 mm (1.4 in)
1950	62.4 mm (2.5 in)
1951	35.1 mm (1.4 in)
1952	59.7 mm (2.4 in)
1953	30.5 mm (1.2 in)
1954	73.2 mm (2.9 in)
1955	93.0 mm (3.7 in)
1956	37.5 mm (1.5 in)
1957	37.0 mm (1.5 in)
1958	52.0 mm (2.0 in)
1959	26.0 mm (1.0 in)
1960	14.5 mm (0.6 in)
1961	115.5 mm (4.5 in)
1962	19.5 mm (0.8 in)
1963	75.0 mm (3.0 in)
1964	17.5 mm (0.7 in)
1965	20.0 mm (0.8 in)
1966	62.4 mm (2.5 in)
1967	63.0 mm (2.5 in)
1968	65.6 mm (2.6 in)
1969	71.5 mm (2.8 in)
1970	31.0 mm (1.2 in)
1971	31.5 mm (1.2 in)
1972	128.0 mm (5.0 in)
1973	65.0 mm (2.6 in)
1974	78.0 mm (3.1 in)
1975	93.0 mm (3.7 in)
1976	65.0 mm (2.6 in)
1977	84.5 mm (3.3 in)
1978	21.0 mm (0.8 in)
1979	14.0 mm (0.6 in)
1980	18.5 mm (0.7 in)
1981	54.5 mm (2.1 in)
1982	39.0 mm (1.5 in)
1983	40.5 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Gannapan, 1880 to 1983. The record is 366 days in 1920, marked on the chart; the median year is 141 days.

Longest dry spell (CDD) at Gannapan by year
Year	Longest dry spell (CDD)
1880	28 days
1881	160 days
1882	118 days
1891	105 days
1892	89 days
1893	108 days
1894	66 days
1895	242 days
1896	191 days
1897	328 days
1898	130 days
1899	95 days
1900	230 days
1901	151 days
1902	293 days
1903	365 days
1904	277 days
1905	129 days
1906	183 days
1907	218 days
1908	206 days
1914	296 days
1915	315 days
1916	271 days
1917	141 days
1918	31 days
1920	366 days
1922	214 days
1923	48 days
1924	154 days
1925	68 days
1926	212 days
1927	119 days
1928	120 days
1929	64 days
1930	71 days
1931	121 days
1932	161 days
1933	112 days
1934	169 days
1935	166 days
1936	111 days
1937	102 days
1938	111 days
1939	70 days
1940	91 days
1941	141 days
1942	60 days
1943	74 days
1944	78 days
1945	144 days
1946	120 days
1947	122 days
1948	173 days
1949	224 days
1950	96 days
1951	113 days
1952	75 days
1953	51 days
1954	135 days
1955	83 days
1956	118 days
1957	115 days
1958	156 days
1959	188 days
1960	253 days
1961	106 days
1962	158 days
1963	87 days
1964	144 days
1965	260 days
1966	263 days
1967	75 days
1968	158 days
1969	215 days
1970	80 days
1971	76 days
1972	279 days
1973	151 days
1974	201 days
1975	224 days
1976	178 days
1977	226 days
1978	147 days
1979	301 days
1980	214 days
1981	86 days
1982	100 days
1983	52 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

80 years, 1881 to 1982

A day with at least 33.1 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 95.0 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Gannapan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	33.1 mm (1.3 in)
5 years	50.1 mm (2.0 in)
10 years	61.3 mm (2.4 in)
25 years	75.0 mm (3.0 in)
50 years	85.1 mm (3.4 in)
100 years	95.0 mm (3.7 in)	Longer than the 80 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, 80 years of values from 1881 to 1982.

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: 102.0 mm (4.0 in) in 1961; 80.5 mm (3.2 in) in 1955; 78.0 mm (3.1 in) in 1974.

Download the Data

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