Coimbra Threshold Days by Year

13 fixed thresholds counted per year at Coimbra (PO000008549): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Coimbra Thresholds

Coimbra: days with a maximum temperature at or above 30 C (86 F) in 108 years, most in 1944 with 64.
Coimbra: days with a maximum temperature at or above 35 C (95 F) in 108 years, most in 1926 with 26.
Coimbra: days with a maximum temperature at or above 90 F (32.2 C) in 108 years, most in 1949 with 44.
Coimbra: nights with a minimum temperature at or below 0 C (32 F) in 92 years, most in 2005 with 19.
13 fixed thresholds have at least one qualifying day at Coimbra.

Days at or above 30 C (86 F)

108 years with a qualifying day

Days per year at Coimbra with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 64 in 1944.

Days at or above 30 C (86 F) per year at Coimbra
Year	Days	Decade average
1901	25	25.3
1902	15	25.3
1903	22	25.3
1904	22	25.3
1905	19	25.3
1906	35	25.3
1907	36	25.3
1908	28	25.3
1909	26	25.3
1910	24	26.7
1911	31	26.7
1912	14	26.7
1913	26	26.7
1914	28	26.7
1915	20	26.7
1916	23	26.7
1917	23	26.7
1918	34	26.7
1919	44	26.7
1920	36	41.5
1921	43	41.5
1922	40	41.5
1924	24	41.5
1925	38	41.5
1926	61	41.5
1928	48	41.5
1929	42	41.5
1930	33	34.4
1931	24	34.4
1932	33	34.4
1933	41	34.4
1934	46	34.4
1935	36	34.4
1936	28	34.4
1937	44	34.4
1938	30	34.4
1939	29	34.4
1940	41	52.3
1941	60	52.3
1942	44	52.3
1943	49	52.3
1944	64	52.3
1945	61	52.3
1946	39	52.3
1947	47	52.3
1948	55	52.3
1949	63	52.3
1950	27	35.4
1951	31	35.4
1952	36	35.4
1953	45	35.4
1954	36	35.4
1955	44	35.4
1956	25	35.4
1957	45	35.4
1958	29	35.4
1959	36	35.4
1960	37	37.4
1961	52	37.4
1962	48	37.4
1963	34	37.4
1964	48	37.4
1965	31	37.4
1966	38	37.4
1967	23	37.4
1968	27	37.4
1969	36	37.4
1970	54	31.2
1971	29	31.2
1972	18	31.2
1973	27	31.2
1974	35	31.2
1975	25	31.2
1976	42	31.2
1977	19	31.2
1978	27	31.2
1979	36	31.2
1980	29	34.2
1981	46	34.2
1982	24	34.2
1983	33	34.2
1984	26	34.2
1985	39	34.2
1986	22	34.2
1987	47	34.2
1988	26	34.2
1989	50	34.2
1990	48	37
1991	50	37
1992	31	37
1993	35	37
1994	24	37
1995	49	37
1996	36	37
1997	41	37
1998	31	37
1999	25	37
2000	30	36.5
2001	33	36.5
2002	24	36.5
2003	42	36.5
2004	36	36.5
2005	55	36.5
2006	45	36.5
2007	33	36.5
2008	22	36.5
2009	45	36.5
2010	60	60

For each year, a bar from the first to the last day at Coimbra meeting 30 C (86 F).

First to last qualifying date each year at Coimbra
Year	First date	Last date
1901	1901-06-04	1901-08-28
1902	1902-03-30	1902-08-21
1903	1903-05-20	1903-10-05
1904	1904-05-11	1904-10-05
1905	1905-06-21	1905-09-04
1906	1906-05-27	1906-09-20
1907	1907-05-29	1907-09-22
1908	1908-05-17	1908-10-03
1909	1909-05-29	1909-09-05
1910	1910-06-14	1910-09-26
1911	1911-06-27	1911-09-28
1912	1912-05-06	1912-09-07
1913	1913-05-22	1913-09-22
1914	1914-05-20	1914-10-04
1915	1915-06-04	1915-09-18
1916	1916-06-29	1916-09-17
1917	1917-06-02	1917-09-29
1918	1918-05-28	1918-08-21
1919	1919-05-22	1919-09-14
1920	1920-05-05	1920-09-27
1921	1921-06-09	1921-09-21
1922	1922-05-06	1922-10-01
1924	1924-04-29	1924-09-16
1925	1925-06-09	1925-10-16
1926	1926-06-19	1926-10-17
1928	1928-05-25	1928-09-18
1929	1929-06-15	1929-10-14
1930	1930-05-18	1930-10-01
1931	1931-06-09	1931-10-03
1932	1932-04-08	1932-09-14
1933	1933-05-11	1933-09-03
1934	1934-05-08	1934-10-13
1935	1935-06-17	1935-09-20
1936	1936-07-03	1936-09-22
1937	1937-05-26	1937-09-28
1938	1938-03-31	1938-10-13
1939	1939-05-11	1939-09-18
1940	1940-05-30	1940-09-12
1941	1941-06-13	1941-10-21
1942	1942-05-18	1942-10-17
1943	1943-04-26	1943-10-01
1944	1944-03-25	1944-10-01
1945	1945-03-20	1945-10-13
1946	1946-06-22	1946-10-07
1947	1947-04-23	1947-10-15
1948	1948-03-23	1948-10-10
1949	1949-04-08	1949-10-12
1950	1950-04-09	1950-10-18
1951	1951-06-18	1951-09-20
1952	1952-05-13	1952-10-05
1953	1953-05-22	1953-10-07
1954	1954-05-06	1954-10-17
1955	1955-04-11	1955-10-15
1956	1956-05-07	1956-09-29
1957	1957-04-19	1957-09-28
1958	1958-04-28	1958-10-14
1959	1959-05-13	1959-09-21
1960	1960-05-24	1960-09-13
1961	1961-05-07	1961-09-24
1962	1962-06-06	1962-10-07
1963	1963-06-19	1963-10-24
1964	1964-05-13	1964-10-05
1965	1965-05-07	1965-09-21
1966	1966-05-19	1966-09-15
1967	1967-06-10	1967-10-10
1968	1968-05-14	1968-10-21
1969	1969-05-10	1969-09-25
1970	1970-05-20	1970-11-02
1971	1971-06-18	1971-09-30
1972	1972-07-02	1972-08-31
1973	1973-06-13	1973-09-26
1974	1974-05-20	1974-09-19
1975	1975-06-04	1975-09-21
1976	1976-05-25	1976-09-07
1977	1977-07-20	1977-09-29
1978	1978-06-01	1978-09-27
1979	1979-05-10	1979-09-26
1980	1980-06-01	1980-10-02
1981	1981-06-10	1981-09-14
1982	1982-06-14	1982-09-15
1983	1983-06-03	1983-10-02
1984	1984-06-10	1984-09-15
1985	1985-06-24	1985-10-15
1986	1986-05-31	1986-10-01
1987	1987-05-20	1987-09-17
1988	1988-06-01	1988-10-02
1989	1989-05-04	1989-10-07
1990	1990-05-27	1990-09-26
1991	1991-05-20	1991-09-22
1992	1992-05-11	1992-09-15
1993	1993-06-13	1993-09-01
1994	1994-04-27	1994-09-18
1995	1995-04-09	1995-10-18
1996	1996-05-27	1996-09-28
1997	1997-04-13	1997-10-03
1998	1998-06-16	1998-10-13
1999	1999-05-22	1999-09-09
2000	2000-06-06	2000-09-13
2001	2001-05-25	2001-10-29
2002	2002-03-21	2002-08-31
2003	2003-05-20	2003-09-18
2004	2004-05-16	2004-09-27
2005	2005-05-23	2005-10-06
2006	2006-05-25	2006-10-28
2007	2007-05-08	2007-09-19
2008	2008-04-24	2008-10-09
2009	2009-05-27	2009-10-11
2010	2010-04-26	2010-09-18

Every Fixed Threshold

Fixed thresholds at Coimbra
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	108	64	1944	60
35 C (95 F): Days	108	26	1926	15
40 C (104 F): Days	34	4	1946	2
45 C (113 F): Days	1	1	1944	1
90 F (32.2 C): Days	108	44	1949	33
100 F (37.8 C): Days	82	10	1949	6
110 F (43.3 C): Days	2	1	1943	1
0 C (32 F): Frost days (min	92	19	2005	11
20 C (68 F): Tropical nights (min	80	14	1949	3
25 C (77 F): Days with min	8	2	1934	1
10 mm (0.39 in): Days with 10 mm or more rain	70	61	1960	29
25 mm (0.98 in): Days with 25 mm or more rain	70	17	1963	6
50 mm (1.97 in): Days with 50 mm or more rain	32	4	1963	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Coimbra 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).

Coimbra Threshold Days by Year

Key Facts for Coimbra Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related