Caiana Threshold Days by Year (BR002041005)

4 fixed thresholds counted per year at Caiana (BR002041005): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Caiana Thresholds

Caiana: days with 10 mm (0.39 in) or more of precipitation in 51 years, most in 1964 with 67.
Caiana: days with 25 mm (0.98 in) or more of precipitation in 51 years, most in 1962 with 27.
Caiana: days with 50 mm (1.97 in) or more of precipitation in 49 years, most in 1962 with 12.
Caiana: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1941 with 1.
4 fixed thresholds have at least one qualifying day at Caiana.

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

51 years with a qualifying day

Days per year at Caiana with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 67 in 1964.

Days with 10 mm (0.39 in) or more of precipitation per year at Caiana
Year	Days	Decade average
1940	51	49.5
1941	52	49.5
1942	54	49.5
1943	57	49.5
1944	39	49.5
1945	48	49.5
1946	46	49.5
1947	43	49.5
1948	47	49.5
1949	58	49.5
1950	51	40.6
1951	42	40.6
1952	58	40.6
1953	40	40.6
1954	26	40.6
1955	34	40.6
1956	33	40.6
1957	43	40.6
1958	37	40.6
1959	42	40.6
1960	56	51.1
1961	41	51.1
1962	57	51.1
1963	40	51.1
1964	67	51.1
1966	43	51.1
1967	42	51.1
1968	63	51.1
1970	55	48.2
1971	49	48.2
1972	42	48.2
1974	46	48.2
1975	39	48.2
1976	42	48.2
1977	49	48.2
1978	53	48.2
1979	59	48.2
1980	51	43.4
1981	52	43.4
1983	40	43.4
1986	31	43.4
1987	50	43.4
1988	35	43.4
1989	45	43.4
1990	33	42.9
1991	43	42.9
1992	43	42.9
1993	35	42.9
1995	49	42.9
1996	48	42.9
1997	49	42.9

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

First to last qualifying date each year at Caiana
Year	First date	Last date
1940	1940-01-01	1940-12-21
1941	1941-01-03	1941-12-31
1942	1942-01-02	1942-12-31
1943	1943-01-01	1943-12-24
1944	1944-01-03	1944-12-26
1945	1945-01-03	1945-12-30
1946	1946-01-04	1946-12-31
1947	1947-01-08	1947-12-31
1948	1948-01-14	1948-12-31
1949	1949-01-08	1949-12-26
1950	1950-01-11	1950-12-21
1951	1951-01-02	1951-12-31
1952	1952-01-02	1952-12-28
1953	1953-01-25	1953-12-31
1954	1954-01-04	1954-12-30
1955	1955-01-18	1955-12-31
1956	1956-01-01	1956-12-28
1957	1957-01-03	1957-12-29
1958	1958-01-11	1958-12-29
1959	1959-01-02	1959-12-26
1960	1960-01-03	1960-12-20
1961	1961-01-01	1961-12-15
1962	1962-01-01	1962-12-25
1963	1963-01-02	1963-12-29
1964	1964-01-03	1964-11-21
1966	1966-01-06	1966-12-30
1967	1967-02-01	1967-12-30
1968	1968-01-03	1968-12-16
1970	1970-01-02	1970-12-20
1971	1971-01-12	1971-12-24
1972	1972-01-10	1972-12-26
1974	1974-01-02	1974-12-30
1975	1975-01-01	1975-12-15
1976	1976-02-03	1976-12-29
1977	1977-01-03	1977-12-31
1978	1978-01-01	1978-12-29
1979	1979-01-02	1979-12-28
1980	1980-01-01	1980-12-28
1981	1981-01-01	1981-12-26
1983	1983-02-09	1983-12-29
1986	1986-01-02	1986-12-31
1987	1987-01-05	1987-12-23
1988	1988-01-11	1988-12-27
1989	1989-01-02	1989-12-21
1990	1990-02-12	1990-12-30
1991	1991-01-06	1991-12-29
1992	1992-01-02	1992-12-29
1993	1993-01-10	1993-12-31
1995	1995-01-20	1995-12-31
1996	1996-01-01	1996-12-29
1997	1997-01-02	1997-12-30

Every Fixed Threshold

Fixed thresholds at Caiana
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	51	67	1964	49
25 mm (0.98 in): Days with 25 mm or more rain	51	27	1962	18
50 mm (1.97 in): Days with 50 mm or more rain	49	12	1962	6
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1941	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.

Download the Data

Data for Caiana 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).

Caiana Threshold Days by Year (BR002041005)

Key Facts for Caiana Thresholds

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

Every Fixed Threshold

Download the Data

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