Groenvlei Weather Records (SF001453100)

Record envelope, standing records and threshold days for Groenvlei (SF001453100), South Africa, with 69 years of record.

Key Facts for Groenvlei

Groenvlei (SF001453100) is a weather station in South Africa at -31.17 latitude and 25.20 longitude, 1,490 m (4,888 ft) above sea level.
The station reports from 1929 to 1997, 69 years of record.
0 records set at Groenvlei still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Groenvlei set a daily record precipitation of 11.0 mm (0.4 in) on 27 July 1997.

About the Station

Location: South Africa, -31.17 latitude, 25.20 longitude.
Elevation: 1,490 m (4,888 ft).
Period of record: 1929 to 1997, 69 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 Groenvlei. 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 Groenvlei, 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 Groenvlei still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Groenvlei between 27 January 1963 and 30 January 1967. Each dot is a new record.

When Groenvlei set new all-time records
Date	Kind	Detail
1963-01-27	Record daily precipitation	Record daily precipitation 80.5 mm (3.2 in)
1967-01-30	Record daily precipitation	Record daily precipitation 116.5 mm (4.6 in)

Wettest Day of Each Month

Jan: 116.5 mm (4.6 in)

The wettest day on record for each calendar month at Groenvlei. The most was 116.5 mm (4.6 in) on 30 January 1967.

Record daily precipitation for each month at Groenvlei
Month	Record daily precipitation (mm)	Date
Jan	116.5 mm (4.6 in)	30 January 1967
Feb	115.0 mm (4.5 in)	14 February 1989
Mar	69.0 mm (2.7 in)	20 March 1974
Apr	58.5 mm (2.3 in)	9 April 1969
May	52.1 mm (2.1 in)	13 May 1935
Jun	41.0 mm (1.6 in)	18 June 1964
Jul	45.5 mm (1.8 in)	17 July 1965
Aug	53.5 mm (2.1 in)	23 August 1981
Sep	82.0 mm (3.2 in)	22 September 1987
Oct	52.0 mm (2.0 in)	18 October 1969
Nov	83.5 mm (3.3 in)	2 November 1985
Dec	74.5 mm (2.9 in)	18 December 1995

Latest Records

Latest records at Groenvlei
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 1997	Groenvlei, ZA	daily rain	11.0 mm (0.4 in)	9.0 mm (0.35 in)	44 years	20 of 100 (Routine)
27 May 1997	Groenvlei, ZA	daily rain	14.0 mm (0.6 in)	6.9 mm (0.27 in)	52 years	20 of 100 (Routine)
26 May 1997	Groenvlei, ZA	daily rain	30.5 mm (1.2 in)	23.0 mm (0.9 in)	30 years	39 of 100 (Notable)
6 May 1997	Groenvlei, ZA	daily rain	11.0 mm (0.4 in)	7.4 mm (0.29 in)	55 years	20 of 100 (Routine)
2 March 1997	Groenvlei, ZA	daily rain	33.0 mm (1.3 in)	14.7 mm (0.6 in)	44 years	31 of 100 (Routine)
29 December 1996	Groenvlei, ZA	daily rain	71.5 mm (2.8 in)	55.8 mm (2.2 in)	46 years	59 of 100 (Notable)
17 November 1996	Groenvlei, ZA	daily rain	24.0 mm (0.9 in)	3.4 mm (0.13 in)	43 years	20 of 100 (Routine)
6 August 1996	Groenvlei, ZA	daily rain	23.0 mm (0.9 in)	23.0 mm (0.9 in)	67 years	20 of 100 (Routine)
3 March 1996	Groenvlei, ZA	daily rain	51.0 mm (2.0 in)	31.7 mm (1.2 in)	46 years	45 of 100 (Notable)
23 January 1996	Groenvlei, ZA	daily rain	26.0 mm (1.0 in)	10.0 mm (0.4 in)	36 years	24 of 100 (Routine)
18 December 1995	Groenvlei, ZA	monthly rain	74.5 mm (2.9 in)	11.5 mm (0.5 in)	22 years	32 of 100 (Routine)
7 May 1995	Groenvlei, ZA	daily rain	33.0 mm (1.3 in)	25.2 mm (1.0 in)	17 years	38 of 100 (Notable)
8 April 1995	Groenvlei, ZA	daily rain	6.5 mm (0.26 in)	3.0 mm (0.12 in)	41 years	20 of 100 (Routine)
26 December 1994	Groenvlei, ZA	daily rain	11.0 mm (0.4 in)	1.3 mm (0.05 in)	61 years	20 of 100 (Routine)
29 January 1994	Groenvlei, ZA	daily rain	26.0 mm (1.0 in)	7.0 mm (0.28 in)	28 years	18 of 100 (Routine)
24 December 1993	Groenvlei, ZA	daily rain	33.0 mm (1.3 in)	28.4 mm (1.1 in)	43 years	44 of 100 (Notable)
11 November 1993	Groenvlei, ZA	daily rain	22.0 mm (0.9 in)	2.2 mm (0.09 in)	51 years	20 of 100 (Routine)
19 October 1993	Groenvlei, ZA	daily rain	22.5 mm (0.9 in)	7.0 mm (0.28 in)	28 years	20 of 100 (Routine)
28 June 1993	Groenvlei, ZA	daily rain	10.5 mm (0.4 in)	6.0 mm (0.24 in)	24 years	20 of 100 (Routine)
27 April 1993	Groenvlei, ZA	daily rain	22.0 mm (0.9 in)	11.8 mm (0.5 in)	62 years	20 of 100 (Routine)

Extremes by Year

1929 to 1997

Yearly extremes at Groenvlei: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	116.5 mm (4.6 in)	1967	43.2 mm (1.7 in)	69
Wettest five days (Rx5day)	166.5 mm (6.6 in)	1988	64.3 mm (2.5 in)	69
Longest dry spell (CDD)	136 days	1951	66 days	69

Wettest day (Rx1day)

The wettest day of the year at Groenvlei, 1929 to 1997. The record is 116.5 mm (4.6 in) in 1967, marked on the chart; the median year is 43.2 mm (1.7 in).

Wettest day (Rx1day) at Groenvlei by year
Year	Wettest day (Rx1day)
1929	43.2 mm (1.7 in)
1930	20.6 mm (0.8 in)
1931	45.2 mm (1.8 in)
1932	50.8 mm (2.0 in)
1933	24.1 mm (0.9 in)
1934	44.5 mm (1.8 in)
1935	58.4 mm (2.3 in)
1936	38.1 mm (1.5 in)
1937	20.6 mm (0.8 in)
1938	30.7 mm (1.2 in)
1939	50.5 mm (2.0 in)
1940	55.9 mm (2.2 in)
1941	50.8 mm (2.0 in)
1942	38.1 mm (1.5 in)
1943	40.6 mm (1.6 in)
1944	43.2 mm (1.7 in)
1945	20.1 mm (0.8 in)
1946	36.6 mm (1.4 in)
1947	28.7 mm (1.1 in)
1948	37.1 mm (1.5 in)
1949	18.8 mm (0.7 in)
1950	52.6 mm (2.1 in)
1951	24.1 mm (0.9 in)
1952	41.1 mm (1.6 in)
1953	46.4 mm (1.8 in)
1954	44.0 mm (1.7 in)
1955	26.5 mm (1.0 in)
1956	69.0 mm (2.7 in)
1957	40.0 mm (1.6 in)
1958	73.5 mm (2.9 in)
1959	42.0 mm (1.7 in)
1960	29.0 mm (1.1 in)
1961	39.5 mm (1.6 in)
1962	48.5 mm (1.9 in)
1963	80.5 mm (3.2 in)
1964	41.0 mm (1.6 in)
1965	45.5 mm (1.8 in)
1966	24.0 mm (0.9 in)
1967	116.5 mm (4.6 in)
1968	38.5 mm (1.5 in)
1969	58.5 mm (2.3 in)
1970	30.5 mm (1.2 in)
1971	39.0 mm (1.5 in)
1972	44.5 mm (1.8 in)
1973	63.0 mm (2.5 in)
1974	69.0 mm (2.7 in)
1975	38.5 mm (1.5 in)
1976	44.0 mm (1.7 in)
1977	49.5 mm (1.9 in)
1978	45.0 mm (1.8 in)
1979	51.5 mm (2.0 in)
1980	31.0 mm (1.2 in)
1981	53.5 mm (2.1 in)
1982	30.0 mm (1.2 in)
1983	37.5 mm (1.5 in)
1984	43.5 mm (1.7 in)
1985	83.5 mm (3.3 in)
1986	49.5 mm (1.9 in)
1987	82.0 mm (3.2 in)
1988	87.0 mm (3.4 in)
1989	115.0 mm (4.5 in)
1990	41.3 mm (1.6 in)
1991	39.5 mm (1.6 in)
1992	43.0 mm (1.7 in)
1993	33.0 mm (1.3 in)
1994	26.0 mm (1.0 in)
1995	74.5 mm (2.9 in)
1996	71.5 mm (2.8 in)
1997	33.0 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Groenvlei, 1929 to 1997. The record is 166.5 mm (6.6 in) in 1988, marked on the chart; the median year is 64.3 mm (2.5 in).

Wettest five days (Rx5day) at Groenvlei by year
Year	Wettest five days (Rx5day)
1929	81.1 mm (3.2 in)
1930	44.0 mm (1.7 in)
1931	84.8 mm (3.3 in)
1932	114.7 mm (4.5 in)
1933	41.2 mm (1.6 in)
1934	90.6 mm (3.6 in)
1935	100.3 mm (3.9 in)
1936	39.1 mm (1.5 in)
1937	41.2 mm (1.6 in)
1938	64.3 mm (2.5 in)
1939	101.5 mm (4.0 in)
1940	85.1 mm (3.4 in)
1941	73.4 mm (2.9 in)
1942	57.4 mm (2.3 in)
1943	88.6 mm (3.5 in)
1944	79.8 mm (3.1 in)
1945	33.3 mm (1.3 in)
1946	66.4 mm (2.6 in)
1947	36.1 mm (1.4 in)
1948	63.6 mm (2.5 in)
1949	25.4 mm (1.0 in)
1950	74.9 mm (2.9 in)
1951	33.9 mm (1.3 in)
1952	93.9 mm (3.7 in)
1953	98.1 mm (3.9 in)
1954	66.5 mm (2.6 in)
1955	69.0 mm (2.7 in)
1956	79.5 mm (3.1 in)
1957	41.3 mm (1.6 in)
1958	105.5 mm (4.2 in)
1959	55.6 mm (2.2 in)
1960	52.0 mm (2.0 in)
1961	66.5 mm (2.6 in)
1962	60.2 mm (2.4 in)
1963	89.0 mm (3.5 in)
1964	54.3 mm (2.1 in)
1965	48.5 mm (1.9 in)
1966	41.5 mm (1.6 in)
1967	122.5 mm (4.8 in)
1968	66.0 mm (2.6 in)
1969	60.5 mm (2.4 in)
1970	49.5 mm (1.9 in)
1971	41.5 mm (1.6 in)
1972	56.2 mm (2.2 in)
1973	63.0 mm (2.5 in)
1974	88.5 mm (3.5 in)
1975	45.0 mm (1.8 in)
1976	68.5 mm (2.7 in)
1977	78.0 mm (3.1 in)
1978	55.5 mm (2.2 in)
1979	54.0 mm (2.1 in)
1980	52.5 mm (2.1 in)
1981	82.0 mm (3.2 in)
1982	31.1 mm (1.2 in)
1983	37.5 mm (1.5 in)
1984	43.5 mm (1.7 in)
1985	83.5 mm (3.3 in)
1986	63.0 mm (2.5 in)
1987	82.0 mm (3.2 in)
1988	166.5 mm (6.6 in)
1989	123.0 mm (4.8 in)
1990	41.3 mm (1.6 in)
1991	93.0 mm (3.7 in)
1992	43.0 mm (1.7 in)
1993	52.0 mm (2.0 in)
1994	26.0 mm (1.0 in)
1995	80.0 mm (3.1 in)
1996	82.0 mm (3.2 in)
1997	71.5 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Groenvlei, 1929 to 1997. The record is 136 days in 1951, marked on the chart; the median year is 66 days.

Longest dry spell (CDD) at Groenvlei by year
Year	Longest dry spell (CDD)
1929	37 days
1930	66 days
1931	87 days
1932	62 days
1933	63 days
1934	78 days
1935	54 days
1936	58 days
1937	90 days
1938	52 days
1939	58 days
1940	86 days
1941	62 days
1942	65 days
1943	39 days
1944	65 days
1945	68 days
1946	63 days
1947	73 days
1948	92 days
1949	88 days
1950	82 days
1951	136 days
1952	31 days
1953	64 days
1954	109 days
1955	79 days
1956	59 days
1957	37 days
1958	107 days
1959	57 days
1960	52 days
1961	69 days
1962	49 days
1963	61 days
1964	72 days
1965	36 days
1966	79 days
1967	50 days
1968	83 days
1969	54 days
1970	64 days
1971	63 days
1972	88 days
1973	39 days
1974	80 days
1975	84 days
1976	66 days
1977	41 days
1978	52 days
1979	42 days
1980	128 days
1981	77 days
1982	50 days
1983	47 days
1984	118 days
1985	131 days
1986	69 days
1987	38 days
1988	72 days
1989	53 days
1990	79 days
1991	77 days
1992	59 days
1993	98 days
1994	87 days
1995	121 days
1996	96 days
1997	111 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

68 years, 1929 to 1997

A day with at least 42.7 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 118.7 mm (4.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Groenvlei: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	42.7 mm (1.7 in)
5 years	59.4 mm (2.3 in)
10 years	71.8 mm (2.8 in)
25 years	89.1 mm (3.5 in)
50 years	103.3 mm (4.1 in)
100 years	118.7 mm (4.7 in)	Longer than the 68 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, 68 years of values from 1929 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: 116.5 mm (4.6 in) in 1967; 115.0 mm (4.5 in) in 1989; 87.0 mm (3.4 in) in 1988.

Download the Data

Data for Groenvlei standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Groenvlei 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 2026-10-15 (15 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