Devonport Harbour Master Threshold Days by Year

4 fixed thresholds counted per year at Devonport Harbour Master (ASN00091025): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Devonport Harbour Master Thresholds

Devonport Harbour Master: days with 10 mm (0.39 in) or more of precipitation in 69 years, most in 1971 with 46.
Devonport Harbour Master: days with 25 mm (0.98 in) or more of precipitation in 69 years, most in 1955 with 12.
Devonport Harbour Master: days with 50 mm (1.97 in) or more of precipitation in 23 years, most in 1974 with 4.
Devonport Harbour Master: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1946 with 1.
4 fixed thresholds have at least one qualifying day at Devonport Harbour Master.

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

69 years with a qualifying day

Days per year at Devonport Harbour Master with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1971.

Days with 10 mm (0.39 in) or more of precipitation per year at Devonport Harbour Master
Year	Days	Decade average
1904	21	26
1907	29	26
1909	28	26
1910	39	28.3
1911	21	28.3
1912	35	28.3
1913	19	28.3
1914	11	28.3
1915	38	28.3
1916	38	28.3
1917	32	28.3
1918	31	28.3
1919	19	28.3
1920	27	27.2
1921	25	27.2
1922	19	27.2
1923	37	27.2
1925	23	27.2
1926	29	27.2
1927	26	27.2
1928	27	27.2
1929	32	27.2
1930	36	28.6
1931	31	28.6
1932	31	28.6
1933	19	28.6
1934	29	28.6
1935	20	28.6
1936	28	28.6
1937	27	28.6
1938	27	28.6
1939	38	28.6
1940	19	26.5
1941	21	26.5
1942	35	26.5
1943	22	26.5
1944	22	26.5
1945	22	26.5
1946	33	26.5
1947	44	26.5
1948	26	26.5
1949	21	26.5
1950	27	29
1951	22	29
1952	35	29
1953	35	29
1954	25	29
1955	44	29
1956	39	29
1957	17	29
1958	26	29
1959	20	29
1960	29	28.8
1961	20	28.8
1962	30	28.8
1963	33	28.8
1964	43	28.8
1965	23	28.8
1966	29	28.8
1967	18	28.8
1968	31	28.8
1969	32	28.8
1970	21	30.3
1971	46	30.3
1972	14	30.3
1973	37	30.3
1974	32	30.3
1975	39	30.3
1976	23	30.3

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

First to last qualifying date each year at Devonport Harbour Master
Year	First date	Last date
1904	1904-01-03	1904-10-19
1907	1907-01-27	1907-11-03
1909	1909-01-04	1909-12-22
1910	1910-01-10	1910-12-04
1911	1911-02-06	1911-12-26
1912	1912-03-11	1912-12-10
1913	1913-02-18	1913-11-22
1914	1914-04-06	1914-12-02
1915	1915-02-20	1915-11-22
1916	1916-01-04	1916-12-21
1917	1917-01-04	1917-12-18
1918	1918-01-15	1918-12-20
1919	1919-02-19	1919-12-04
1920	1920-01-03	1920-12-16
1921	1921-01-02	1921-11-28
1922	1922-02-02	1922-12-24
1923	1923-01-06	1923-12-15
1925	1925-01-16	1925-10-12
1926	1926-01-28	1926-12-18
1927	1927-01-06	1927-12-05
1928	1928-01-01	1928-11-08
1929	1929-01-26	1929-12-28
1930	1930-02-20	1930-12-25
1931	1931-02-14	1931-11-17
1932	1932-02-11	1932-12-24
1933	1933-03-24	1933-12-04
1934	1934-01-30	1934-12-31
1935	1935-02-11	1935-11-22
1936	1936-03-04	1936-12-04
1937	1937-01-02	1937-12-13
1938	1938-01-02	1938-12-10
1939	1939-02-17	1939-12-23
1940	1940-01-06	1940-12-28
1941	1941-03-03	1941-11-21
1942	1942-01-20	1942-12-24
1943	1943-01-12	1943-11-18
1944	1944-01-04	1944-12-21
1945	1945-01-31	1945-12-17
1946	1946-01-04	1946-12-29
1947	1947-01-17	1947-12-21
1948	1948-02-04	1948-12-28
1949	1949-02-22	1949-11-18
1950	1950-01-14	1950-12-08
1951	1951-03-01	1951-12-18
1952	1952-01-14	1952-11-27
1953	1953-01-06	1953-12-09
1954	1954-02-01	1954-12-12
1955	1955-01-29	1955-12-02
1956	1956-02-15	1956-12-13
1957	1957-02-08	1957-12-26
1958	1958-02-19	1958-12-10
1959	1959-01-26	1959-12-12
1960	1960-01-09	1960-12-16
1961	1961-04-08	1961-12-18
1962	1962-01-17	1962-11-11
1963	1963-01-15	1963-12-28
1964	1964-02-07	1964-12-24
1965	1965-03-13	1965-12-02
1966	1966-02-24	1966-12-29
1967	1967-01-13	1967-12-13
1968	1968-01-21	1968-11-28
1969	1969-01-15	1969-12-13
1970	1970-01-03	1970-12-28
1971	1971-01-02	1971-12-31
1972	1972-01-12	1972-08-29
1973	1973-01-13	1973-12-31
1974	1974-01-04	1974-11-01
1975	1975-01-09	1975-12-30
1976	1976-01-08	1976-12-12

Every Fixed Threshold

Fixed thresholds at Devonport Harbour Master
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	69	46	1971	23
25 mm (0.98 in): Days with 25 mm or more rain	69	12	1955	2
50 mm (1.97 in): Days with 50 mm or more rain	23	4	1974	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1946	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

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Data for Devonport Harbour Master 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). Threshold counts are computed by this site.

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

Devonport Harbour Master Threshold Days by Year

Key Facts for Devonport Harbour Master Thresholds

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

Every Fixed Threshold

Download the Data

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