Irara Threshold Days by Year (BR048420530)

4 fixed thresholds counted per year at Irara (BR048420530): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Irara Thresholds

Irara: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1968 with 57.
Irara: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1947 with 16.
Irara: days with 50 mm (1.97 in) or more of precipitation in 56 years, most in 1967 with 7.
Irara: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1969 with 3.
4 fixed thresholds have at least one qualifying day at Irara.

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

63 years with a qualifying day

Days per year at Irara with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 57 in 1968.

Days with 10 mm (0.39 in) or more of precipitation per year at Irara
Year	Days	Decade average
1919	33	33
1920	39	31.7
1921	42	31.7
1922	29	31.7
1923	23	31.7
1924	42	31.7
1925	26	31.7
1926	34	31.7
1927	28	31.7
1928	20	31.7
1929	34	31.7
1930	29	26.2
1931	18	26.2
1932	15	26.2
1933	42	26.2
1934	24	26.2
1935	34	26.2
1936	25	26.2
1937	20	26.2
1938	23	26.2
1939	32	26.2
1940	28	30.3
1941	32	30.3
1942	27	30.3
1943	20	30.3
1944	28	30.3
1945	43	30.3
1946	21	30.3
1947	32	30.3
1948	35	30.3
1949	37	30.3
1950	23	24.4
1951	14	24.4
1952	15	24.4
1953	19	24.4
1954	21	24.4
1955	22	24.4
1956	33	24.4
1957	39	24.4
1958	33	24.4
1959	25	24.4
1960	48	33.9
1961	12	33.9
1962	19	33.9
1963	24	33.9
1964	52	33.9
1965	21	33.9
1966	36	33.9
1967	34	33.9
1968	57	33.9
1969	36	33.9
1970	17	25.8
1971	19	25.8
1972	23	25.8
1974	28	25.8
1976	23	25.8
1977	36	25.8
1978	33	25.8
1979	27	25.8
1980	21	24.3
1981	16	24.3
1982	27	24.3
1983	33	24.3

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

First to last qualifying date each year at Irara
Year	First date	Last date
1919	1919-01-02	1919-11-24
1920	1920-01-16	1920-12-27
1921	1921-02-05	1921-12-12
1922	1922-01-12	1922-12-26
1923	1923-02-22	1923-12-03
1924	1924-01-29	1924-12-18
1925	1925-01-10	1925-12-19
1926	1926-01-02	1926-12-13
1927	1927-02-06	1927-12-19
1928	1928-01-07	1928-12-02
1929	1929-02-02	1929-12-09
1930	1930-01-19	1930-12-14
1931	1931-03-29	1931-11-06
1932	1932-01-06	1932-12-01
1933	1933-01-17	1933-12-30
1934	1934-04-26	1934-11-19
1935	1935-01-02	1935-12-20
1936	1936-01-06	1936-12-20
1937	1937-01-26	1937-10-22
1938	1938-01-07	1938-11-04
1939	1939-01-06	1939-12-13
1940	1940-01-13	1940-11-21
1941	1941-01-14	1941-12-04
1942	1942-02-05	1942-12-26
1943	1943-03-02	1943-11-29
1944	1944-01-18	1944-12-27
1945	1945-01-03	1945-12-23
1946	1946-04-15	1946-12-17
1947	1947-01-21	1947-12-03
1948	1948-01-15	1948-12-25
1949	1949-01-04	1949-12-05
1950	1950-01-13	1950-11-15
1951	1951-03-02	1951-12-17
1952	1952-05-06	1952-12-17
1953	1953-01-22	1953-12-19
1954	1954-01-26	1954-12-07
1955	1955-01-17	1955-12-19
1956	1956-02-08	1956-12-16
1957	1957-01-05	1957-11-25
1958	1958-01-29	1958-12-31
1959	1959-01-21	1959-12-28
1960	1960-01-01	1960-11-08
1961	1961-01-16	1961-12-09
1962	1962-01-13	1962-12-15
1963	1963-02-10	1963-12-25
1964	1964-01-07	1964-12-07
1965	1965-01-14	1965-11-25
1966	1966-02-01	1966-12-22
1967	1967-02-21	1967-12-28
1968	1968-01-23	1968-11-26
1969	1969-01-23	1969-12-27
1970	1970-01-02	1970-10-23
1971	1971-04-28	1971-11-15
1972	1972-01-19	1972-12-22
1974	1974-01-03	1974-11-10
1976	1976-02-14	1976-12-12
1977	1977-01-11	1977-12-28
1978	1978-01-01	1978-12-04
1979	1979-01-08	1979-12-29
1980	1980-01-04	1980-11-07
1981	1981-02-13	1981-12-15
1982	1982-02-18	1982-12-24
1983	1983-01-22	1983-11-30

Every Fixed Threshold

Fixed thresholds at Irara
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	63	57	1968	33
25 mm (0.98 in): Days with 25 mm or more rain	63	16	1947	12
50 mm (1.97 in): Days with 50 mm or more rain	56	7	1967	3
100 mm (3.94 in): Days with 100 mm or more rain	5	3	1969	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1919.

Download the Data

Data for Irara 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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

Irara Threshold Days by Year (BR048420530)

Key Facts for Irara Thresholds

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

Every Fixed Threshold

Download the Data

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