Cape Hermes Weather Records (SF001290070)

Record envelope, standing records and threshold days for Cape Hermes (SF001290070), South Africa, with 103 years of record.

Key Facts for Cape Hermes

Cape Hermes (SF001290070) is a weather station in South Africa at -31.63 latitude and 29.55 longitude, 47 m (154 ft) above sea level.
The station reports from 1923 to 2025, 103 years of record.
1,464 records set at Cape Hermes still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Cape Hermes set a daily record precipitation of 86.1 mm (3.4 in) on 5 November 2024.

About the Station

Location: South Africa, -31.63 latitude, 29.55 longitude.
Elevation: 47 m (154 ft).
Period of record: 1923 to 2025, 103 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

4 days at or beyond a record

The band shows the record high and record low for each calendar day at Cape Hermes. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Cape Hermes, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.4 C (97.5 F)	4.6 C (40.3 F)	30.8 C (87.4 F)	19.7 C (67.5 F)
Feb	36.3 C (97.3 F)	12.1 C (53.8 F)	n/a	n/a
Mar	39.8 C (103.6 F)	10.6 C (51.1 F)	n/a	n/a
Apr	41.0 C (105.8 F)	7.3 C (45.1 F)	28.4 C (83.1 F)	17.7 C (63.9 F)
May	41.8 C (107.2 F)	2.0 C (35.6 F)	26.5 C (79.7 F)	13.7 C (56.7 F)
Jun	37.8 C (100.0 F)	-0.8 C (30.6 F)	28.9 C (84.0 F)	8.4 C (47.1 F)
Jul	35.4 C (95.7 F)	-2.9 C (26.8 F)	27.6 C (81.7 F)	6.9 C (44.4 F)
Aug	35.6 C (96.1 F)	0.5 C (32.9 F)	33.0 C (91.4 F)	8.8 C (47.8 F)
Sep	35.2 C (95.4 F)	2.0 C (35.6 F)	n/a	n/a
Oct	39.6 C (103.3 F)	6.5 C (43.7 F)	n/a	n/a
Nov	39.0 C (102.2 F)	5.6 C (42.1 F)	n/a	n/a
Dec	37.8 C (100.0 F)	8.9 C (48.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cape Hermes still stand. 2017 holds the most, with 128.

Standing records at Cape Hermes by the year they were set
Year set	Standing records
1975	13
1976	24
1977	1
1980	15
1981	27
1982	32
1983	42
1984	24
1985	20
1986	28
1987	35
1988	46
1989	26
1990	48
1991	46
1992	61
1993	52
1994	39
1997	7
1998	1
2003	1
2005	2
2011	51
2012	44
2015	34
2016	71
2017	128
2018	120
2019	91
2020	98
2021	56
2022	19
2023	88
2024	63
2025	11

All-Time Record Progression

1 new records

1 all-time records were set at Cape Hermes between 19 February 1984 and 19 February 1984. Each dot is a new record.

Wettest Day of Each Month

Feb: 330.5 mm (13.0 in)

The wettest day on record for each calendar month at Cape Hermes. The most was 330.5 mm (13.0 in) on 19 February 1984.

Record daily precipitation for each month at Cape Hermes
Month	Record daily precipitation (mm)	Date
Jan	160.0 mm (6.3 in)	27 January 1980
Feb	330.5 mm (13.0 in)	19 February 1984
Mar	158.0 mm (6.2 in)	2 March 1952
Apr	189.0 mm (7.4 in)	23 April 2019
May	112.0 mm (4.4 in)	4 May 1976
Jun	137.0 mm (5.4 in)	18 June 1964
Jul	309.4 mm (12.2 in)	21 July 1923
Aug	129.5 mm (5.1 in)	26 August 1970
Sep	172.7 mm (6.8 in)	18 September 1944
Oct	204.5 mm (8.1 in)	11 October 1970
Nov	226.6 mm (8.9 in)	12 November 1942
Dec	117.9 mm (4.6 in)	11 December 1951

Period of Record Coverage

1974 to 2025

39 years of record at Cape Hermes, 1974 to 2025. 38 years have data for under 90 percent of days and are left out of rankings: 1974, 1975, 1976, 1977, 1980, 1982, 1983, 1984 and others.

Days with data per year at Cape Hermes
Year	Days with data	Share of year	Complete
1974	3	1%	No
1975	32	9%	No
1976	182	50%	No
1977	1	0%	No
1980	1	0%	No
1982	188	52%	No
1983	192	53%	No
1984	130	36%	No
1985	124	34%	No
1986	174	48%	No
1987	205	56%	No
1988	210	57%	No
1989	171	47%	No
1990	235	64%	No
1991	231	63%	No
1992	284	78%	No
1993	252	69%	No
1994	207	57%	No
1997	23	6%	No
1998	2	1%	No
1999	2	1%	No
2002	3	1%	No
2003	5	1%	No
2004	2	1%	No
2005	5	1%	No
2011	219	60%	No
2012	123	34%	No
2013	7	2%	No
2015	152	42%	No
2016	325	89%	No
2017	264	72%	No
2018	227	62%	No
2019	335	92%	Yes
2020	221	60%	No
2021	152	42%	No
2022	90	25%	No
2023	275	75%	No
2024	250	68%	No
2025	90	25%	No

Latest Records

Latest records at Cape Hermes
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
5 November 2024	Cape Hermes, ZA	daily rain	86.1 mm (3.4 in)	40.0 mm (1.6 in)	28 years	39 of 100 (Notable)
7 April 2024	Cape Hermes, ZA	daily rain	38.1 mm (1.5 in)	0.1 mm (0.00 in)	44 years	23 of 100 (Routine)
9 November 2021	Cape Hermes, ZA	daily rain	89.9 mm (3.5 in)	23.4 mm (0.9 in)	63 years	39 of 100 (Notable)
6 April 2021	Cape Hermes, ZA	daily rain	81.0 mm (3.2 in)	18.0 mm (0.7 in)	2 years	16 of 100 (Routine)
31 October 2020	Cape Hermes, ZA	daily rain	39.9 mm (1.6 in)	8.9 mm (0.35 in)	64 years	33 of 100 (Routine)
5 September 2019	Cape Hermes, ZA	daily rain	74.9 mm (2.9 in)	31.0 mm (1.2 in)	82 years	50 of 100 (Notable)
26 June 2019	Cape Hermes, ZA	daily rain	84.1 mm (3.3 in)	38.1 mm (1.5 in)	48 years	44 of 100 (Notable)
23 April 2019	Cape Hermes, ZA	monthly rain	189.0 mm (7.4 in)	24.0 mm (0.9 in)	41 years	41 of 100 (Notable)
6 April 2019	Cape Hermes, ZA	daily rain	63.0 mm (2.5 in)	26.0 mm (1.0 in)	57 years	37 of 100 (Notable)
10 March 2019	Cape Hermes, ZA	daily rain	109.0 mm (4.3 in)	33.5 mm (1.3 in)	61 years	43 of 100 (Notable)
26 November 2018	Cape Hermes, ZA	daily rain	67.1 mm (2.6 in)	31.6 mm (1.2 in)	20 years	31 of 100 (Routine)
10 October 2017	Cape Hermes, ZA	daily rain	53.1 mm (2.1 in)	6.1 mm (0.24 in)	68 years	32 of 100 (Routine)
12 May 2017	Cape Hermes, ZA	daily rain	34.0 mm (1.3 in)	2.0 mm (0.08 in)	82 years	34 of 100 (Routine)
8 May 2016	Cape Hermes, ZA	daily rain	35.1 mm (1.4 in)	5.1 mm (0.20 in)	46 years	24 of 100 (Routine)
18 November 2011	Cape Hermes, ZA	daily rain	36.1 mm (1.4 in)	4.1 mm (0.16 in)	29 years	18 of 100 (Routine)
21 March 2003	Cape Hermes, ZA	daily rain	77.0 mm (3.0 in)	8.5 mm (0.33 in)	20 years	18 of 100 (Routine)
26 November 1997	Cape Hermes, ZA	daily rain	35.5 mm (1.4 in)	1.5 mm (0.06 in)	28 years	15 of 100 (Routine)
29 July 1997	Cape Hermes, ZA	daily rain	18.3 mm (0.7 in)	2.3 mm (0.09 in)	63 years	20 of 100 (Routine)
17 July 1997	Cape Hermes, ZA	daily rain	19.5 mm (0.8 in)	1.5 mm (0.06 in)	28 years	15 of 100 (Routine)
29 June 1997	Cape Hermes, ZA	daily rain	37.5 mm (1.5 in)	27.5 mm (1.1 in)	20 years	28 of 100 (Routine)

Extremes by Year

1923 to 2025

Yearly extremes at Cape Hermes: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.8 C (107.2 F)	2023	33.0 C (91.4 F)	39
Coldest night (TNn)	-2.9 C (26.8 F)	2018	9.0 C (48.1 F)	38
Wettest day (Rx1day)	330.5 mm (13.0 in)	1984	85.5 mm (3.4 in)	93
Wettest five days (Rx5day)	422.0 mm (16.6 in)	1923	162.4 mm (6.4 in)	88
Longest dry spell (CDD)	105 days	1993	28 days	89

Hottest day (TXx)

The hottest day of the year at Cape Hermes, 1923 to 2025. The record is 41.8 C (107.2 F) in 2023, marked on the chart; the median year is 33.0 C (91.4 F).

Hottest day (TXx) at Cape Hermes by year
Year	Hottest day (TXx)
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	26.0 C (78.8 F)
1975	28.0 C (82.4 F)
1976	31.0 C (87.8 F)
1977	23.0 C (73.4 F)
1978	n/a
1979	n/a
1980	31.0 C (87.8 F)
1981	n/a
1982	34.0 C (93.2 F)
1983	33.1 C (91.6 F)
1984	32.7 C (90.9 F)
1985	34.0 C (93.2 F)
1986	31.3 C (88.3 F)
1987	33.0 C (91.4 F)
1988	31.0 C (87.8 F)
1989	33.0 C (91.4 F)
1990	33.2 C (91.8 F)
1991	31.0 C (87.8 F)
1992	33.5 C (92.3 F)
1993	33.0 C (91.4 F)
1994	31.5 C (88.7 F)
1995	n/a
1996	n/a
1997	28.5 C (83.3 F)
1998	32.1 C (89.8 F)
1999	27.3 C (81.1 F)
2002	26.0 C (78.8 F)
2003	32.4 C (90.3 F)
2004	29.8 C (85.6 F)
2005	25.0 C (77.0 F)
2011	34.2 C (93.6 F)
2012	35.8 C (96.4 F)
2013	29.7 C (85.5 F)
2015	33.3 C (91.9 F)
2016	37.8 C (100.0 F)
2017	36.4 C (97.5 F)
2018	39.6 C (103.3 F)
2019	35.4 C (95.7 F)
2020	41.0 C (105.8 F)
2021	37.8 C (100.0 F)
2022	35.6 C (96.1 F)
2023	41.8 C (107.2 F)
2024	35.0 C (95.0 F)
2025	33.0 C (91.4 F)

Coldest night (TNn)

The coldest night of the year at Cape Hermes, 1923 to 2025. The record is -2.9 C (26.8 F) in 2018, marked on the chart; the median year is 9.0 C (48.1 F).

Coldest night (TNn) at Cape Hermes by year
Year	Coldest night (TNn)
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	17.0 C (62.6 F)
1977	n/a
1978	n/a
1979	14.0 C (57.2 F)
1980	4.0 C (39.2 F)
1981	7.0 C (44.6 F)
1982	9.5 C (49.1 F)
1983	10.1 C (50.2 F)
1984	2.0 C (35.6 F)
1985	10.3 C (50.5 F)
1986	10.1 C (50.2 F)
1987	8.1 C (46.6 F)
1988	9.2 C (48.6 F)
1989	10.0 C (50.0 F)
1990	9.2 C (48.6 F)
1991	10.6 C (51.1 F)
1992	8.0 C (46.4 F)
1993	10.5 C (50.9 F)
1994	6.3 C (43.3 F)
1995	n/a
1996	n/a
1997	11.3 C (52.3 F)
1998	15.7 C (60.3 F)
1999	15.5 C (59.9 F)
2002	15.6 C (60.1 F)
2003	15.6 C (60.1 F)
2004	11.8 C (53.2 F)
2005	14.0 C (57.2 F)
2011	6.8 C (44.2 F)
2012	8.2 C (46.8 F)
2013	17.9 C (64.2 F)
2015	5.6 C (42.1 F)
2016	8.5 C (47.3 F)
2017	2.0 C (35.6 F)
2018	-2.9 C (26.8 F)
2019	8.0 C (46.4 F)
2020	7.9 C (46.2 F)
2021	6.5 C (43.7 F)
2022	8.6 C (47.5 F)
2023	7.5 C (45.5 F)
2024	8.7 C (47.7 F)
2025	6.9 C (44.4 F)

Wettest day (Rx1day)

The wettest day of the year at Cape Hermes, 1923 to 2025. The record is 330.5 mm (13.0 in) in 1984, marked on the chart; the median year is 85.5 mm (3.4 in).

Wettest day (Rx1day) at Cape Hermes by year
Year	Wettest day (Rx1day)
1923	309.4 mm (12.2 in)
1924	106.7 mm (4.2 in)
1925	50.8 mm (2.0 in)
1926	101.6 mm (4.0 in)
1927	68.3 mm (2.7 in)
1928	73.2 mm (2.9 in)
1929	87.9 mm (3.5 in)
1930	43.7 mm (1.7 in)
1931	85.9 mm (3.4 in)
1932	101.1 mm (4.0 in)
1933	100.3 mm (3.9 in)
1934	85.1 mm (3.4 in)
1935	116.1 mm (4.6 in)
1936	92.7 mm (3.6 in)
1937	122.4 mm (4.8 in)
1938	98.3 mm (3.9 in)
1939	69.9 mm (2.8 in)
1940	76.2 mm (3.0 in)
1941	55.4 mm (2.2 in)
1942	226.6 mm (8.9 in)
1943	64.0 mm (2.5 in)
1944	172.7 mm (6.8 in)
1945	89.4 mm (3.5 in)
1946	76.2 mm (3.0 in)
1947	123.2 mm (4.9 in)
1948	141.0 mm (5.6 in)
1949	112.0 mm (4.4 in)
1950	50.3 mm (2.0 in)
1951	117.9 mm (4.6 in)
1952	158.0 mm (6.2 in)
1953	85.4 mm (3.4 in)
1954	75.0 mm (3.0 in)
1955	66.5 mm (2.6 in)
1956	117.0 mm (4.6 in)
1957	78.0 mm (3.1 in)
1958	79.0 mm (3.1 in)
1959	77.5 mm (3.1 in)
1960	80.5 mm (3.2 in)
1961	73.0 mm (2.9 in)
1962	76.5 mm (3.0 in)
1963	95.0 mm (3.7 in)
1964	137.0 mm (5.4 in)
1965	85.5 mm (3.4 in)
1966	98.0 mm (3.9 in)
1967	115.0 mm (4.5 in)
1968	51.0 mm (2.0 in)
1969	103.0 mm (4.1 in)
1970	204.5 mm (8.1 in)
1971	123.0 mm (4.8 in)
1972	82.0 mm (3.2 in)
1973	148.0 mm (5.8 in)
1974	68.5 mm (2.7 in)
1975	105.0 mm (4.1 in)
1976	156.0 mm (6.1 in)
1977	71.0 mm (2.8 in)
1978	165.0 mm (6.5 in)
1979	60.0 mm (2.4 in)
1980	160.0 mm (6.3 in)
1981	75.0 mm (3.0 in)
1982	98.5 mm (3.9 in)
1983	35.0 mm (1.4 in)
1984	330.5 mm (13.0 in)
1985	160.5 mm (6.3 in)
1986	146.0 mm (5.7 in)
1987	80.3 mm (3.2 in)
1988	60.6 mm (2.4 in)
1989	112.9 mm (4.4 in)
1990	91.0 mm (3.6 in)
1991	52.0 mm (2.0 in)
1992	62.5 mm (2.5 in)
1993	142.7 mm (5.6 in)
1994	170.9 mm (6.7 in)
1995	101.3 mm (4.0 in)
1996	107.2 mm (4.2 in)
1997	87.0 mm (3.4 in)
1998	23.1 mm (0.9 in)
1999	n/a
2002	n/a
2003	77.0 mm (3.0 in)
2004	4.1 mm (0.16 in)
2005	1.5 mm (0.06 in)
2011	36.1 mm (1.4 in)
2012	16.8 mm (0.7 in)
2013	1.0 mm (0.04 in)
2015	30.0 mm (1.2 in)
2016	53.1 mm (2.1 in)
2017	75.9 mm (3.0 in)
2018	67.1 mm (2.6 in)
2019	189.0 mm (7.4 in)
2020	71.9 mm (2.8 in)
2021	89.9 mm (3.5 in)
2022	23.9 mm (0.9 in)
2023	45.0 mm (1.8 in)
2024	86.1 mm (3.4 in)
2025	8.9 mm (0.35 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cape Hermes, 1923 to 2025. The record is 422.0 mm (16.6 in) in 1923, marked on the chart; the median year is 162.4 mm (6.4 in).

Wettest five days (Rx5day) at Cape Hermes by year
Year	Wettest five days (Rx5day)
1923	422.0 mm (16.6 in)
1924	118.1 mm (4.6 in)
1925	94.4 mm (3.7 in)
1926	190.5 mm (7.5 in)
1927	99.8 mm (3.9 in)
1928	196.9 mm (7.8 in)
1929	209.3 mm (8.2 in)
1930	104.4 mm (4.1 in)
1931	170.4 mm (6.7 in)
1932	241.8 mm (9.5 in)
1933	127.3 mm (5.0 in)
1934	167.2 mm (6.6 in)
1935	171.4 mm (6.7 in)
1936	234.1 mm (9.2 in)
1937	166.1 mm (6.5 in)
1938	105.0 mm (4.1 in)
1939	120.5 mm (4.7 in)
1940	132.9 mm (5.2 in)
1941	82.0 mm (3.2 in)
1942	366.5 mm (14.4 in)
1943	203.6 mm (8.0 in)
1944	363.2 mm (14.3 in)
1945	173.9 mm (6.8 in)
1946	121.7 mm (4.8 in)
1947	169.7 mm (6.7 in)
1948	199.7 mm (7.9 in)
1949	188.0 mm (7.4 in)
1950	122.7 mm (4.8 in)
1951	239.8 mm (9.4 in)
1952	245.8 mm (9.7 in)
1953	118.0 mm (4.6 in)
1954	105.0 mm (4.1 in)
1955	137.5 mm (5.4 in)
1956	241.5 mm (9.5 in)
1957	147.5 mm (5.8 in)
1958	206.0 mm (8.1 in)
1959	117.5 mm (4.6 in)
1960	109.0 mm (4.3 in)
1961	160.5 mm (6.3 in)
1962	97.0 mm (3.8 in)
1963	161.5 mm (6.4 in)
1964	179.0 mm (7.0 in)
1965	216.5 mm (8.5 in)
1966	142.0 mm (5.6 in)
1967	213.5 mm (8.4 in)
1968	76.5 mm (3.0 in)
1969	193.5 mm (7.6 in)
1970	303.5 mm (11.9 in)
1971	147.0 mm (5.8 in)
1972	145.5 mm (5.7 in)
1973	154.5 mm (6.1 in)
1974	163.5 mm (6.4 in)
1975	265.0 mm (10.4 in)
1976	416.0 mm (16.4 in)
1977	171.0 mm (6.7 in)
1978	358.0 mm (14.1 in)
1979	117.5 mm (4.6 in)
1980	310.0 mm (12.2 in)
1981	144.0 mm (5.7 in)
1982	193.0 mm (7.6 in)
1983	69.0 mm (2.7 in)
1984	351.0 mm (13.8 in)
1985	293.0 mm (11.5 in)
1986	166.0 mm (6.5 in)
1987	243.3 mm (9.6 in)
1988	112.1 mm (4.4 in)
1989	182.3 mm (7.2 in)
1990	146.9 mm (5.8 in)
1991	126.3 mm (5.0 in)
1992	93.2 mm (3.7 in)
1993	163.2 mm (6.4 in)
1994	218.9 mm (8.6 in)
1995	173.3 mm (6.8 in)
1996	181.8 mm (7.2 in)
1997	133.5 mm (5.3 in)
1998	n/a
1999	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2011	51.2 mm (2.0 in)
2012	30.8 mm (1.2 in)
2013	n/a
2015	51.6 mm (2.0 in)
2016	82.1 mm (3.2 in)
2017	183.1 mm (7.2 in)
2018	70.4 mm (2.8 in)
2019	265.2 mm (10.4 in)
2020	99.1 mm (3.9 in)
2021	38.0 mm (1.5 in)
2022	41.2 mm (1.6 in)
2023	73.4 mm (2.9 in)
2024	79.0 mm (3.1 in)
2025	19.6 mm (0.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cape Hermes, 1923 to 2025. The record is 105 days in 1993, marked on the chart; the median year is 28 days.

Longest dry spell (CDD) at Cape Hermes by year
Year	Longest dry spell (CDD)
1923	32 days
1924	39 days
1925	20 days
1926	41 days
1927	54 days
1928	42 days
1929	32 days
1930	13 days
1931	23 days
1932	24 days
1933	28 days
1934	24 days
1935	37 days
1936	31 days
1937	30 days
1938	22 days
1939	25 days
1940	26 days
1941	28 days
1942	33 days
1943	21 days
1944	21 days
1945	33 days
1946	30 days
1947	14 days
1948	28 days
1949	45 days
1950	23 days
1951	20 days
1952	23 days
1953	27 days
1954	26 days
1955	69 days
1956	28 days
1957	21 days
1958	44 days
1959	46 days
1960	31 days
1961	29 days
1962	39 days
1963	32 days
1964	33 days
1965	24 days
1966	32 days
1967	30 days
1968	51 days
1969	35 days
1970	45 days
1971	19 days
1972	22 days
1973	71 days
1974	24 days
1975	18 days
1976	36 days
1977	39 days
1978	29 days
1979	30 days
1980	25 days
1981	28 days
1982	19 days
1983	62 days
1984	29 days
1985	44 days
1986	82 days
1987	37 days
1988	23 days
1989	24 days
1990	62 days
1991	34 days
1992	56 days
1993	105 days
1994	27 days
1995	30 days
1996	18 days
1997	20 days
1998	n/a
1999	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2011	3 days
2012	3 days
2013	1 day
2015	5 days
2016	6 days
2017	3 days
2018	3 days
2019	5 days
2020	4 days
2021	2 days
2022	3 days
2023	7 days
2024	3 days
2025	4 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

64 years, 1929 to 1997

A day with at least 95.0 mm (3.7 in) of rain is expected about once in 2 years. A day with at least 284.6 mm (11.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Cape Hermes: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	95.0 mm (3.7 in)
5 years	134.8 mm (5.3 in)
10 years	165.1 mm (6.5 in)
25 years	208.4 mm (8.2 in)
50 years	244.7 mm (9.6 in)
100 years	284.6 mm (11.2 in)	Longer than the 64 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, 64 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: 330.5 mm (13.0 in) in 1984; 226.6 mm (8.9 in) in 1942; 204.5 mm (8.1 in) in 1970.

Download the Data

Data for Cape Hermes standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cape Hermes 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 2026-10-16 (16 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).