Itatiaia Threshold Days by Year (BR002244031)

4 fixed thresholds counted per year at Itatiaia (BR002244031): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Itatiaia Thresholds

Itatiaia: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1983 with 73.
Itatiaia: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 1983 with 29.
Itatiaia: days with 50 mm (1.97 in) or more of precipitation in 32 years, most in 1958 with 9.
Itatiaia: days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1968 with 2.
4 fixed thresholds have at least one qualifying day at Itatiaia.

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

35 years with a qualifying day

Days per year at Itatiaia with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 73 in 1983.

Days with 10 mm (0.39 in) or more of precipitation per year at Itatiaia
Year	Days	Decade average
1957	45	42.3
1958	43	42.3
1959	39	42.3
1960	45	46
1961	41	46
1962	54	46
1963	27	46
1964	48	46
1965	53	46
1966	48	46
1967	58	46
1968	38	46
1969	48	46
1970	44	48.9
1971	51	48.9
1972	50	48.9
1973	48	48.9
1974	47	48.9
1975	48	48.9
1976	58	48.9
1977	45	48.9
1982	59	52.9
1983	73	52.9
1984	32	52.9
1985	47	52.9
1986	59	52.9
1987	44	52.9
1988	54	52.9
1989	55	52.9
1990	36	43.5
1991	45	43.5
1992	51	43.5
1993	45	43.5
1994	35	43.5
1995	49	43.5

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

First to last qualifying date each year at Itatiaia
Year	First date	Last date
1957	1957-01-11	1957-12-23
1958	1958-01-18	1958-12-16
1959	1959-01-06	1959-12-25
1960	1960-01-06	1960-12-31
1961	1961-01-05	1961-12-27
1962	1962-01-03	1962-12-31
1963	1963-01-01	1963-12-30
1964	1964-01-03	1964-12-30
1965	1965-01-02	1965-12-30
1966	1966-01-01	1966-12-27
1967	1967-01-01	1967-12-28
1968	1968-01-04	1968-12-30
1969	1969-01-11	1969-12-26
1970	1970-01-05	1970-12-10
1971	1971-01-04	1971-12-29
1972	1972-01-02	1972-12-31
1973	1973-01-02	1973-12-26
1974	1974-01-08	1974-12-25
1975	1975-01-01	1975-12-27
1976	1976-01-06	1976-12-29
1977	1977-01-02	1977-12-23
1982	1982-01-02	1982-12-31
1983	1983-01-01	1983-12-29
1984	1984-01-10	1984-12-28
1985	1985-01-09	1985-12-30
1986	1986-01-01	1986-12-30
1987	1987-01-06	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-02	1989-12-31
1990	1990-01-01	1990-12-28
1991	1991-01-04	1991-12-30
1992	1992-01-03	1992-12-30
1993	1993-01-03	1993-12-31
1994	1994-01-10	1994-12-27
1995	1995-01-01	1995-12-29

Every Fixed Threshold

Fixed thresholds at Itatiaia
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	35	73	1983	49
25 mm (0.98 in): Days with 25 mm or more rain	35	29	1983	17
50 mm (1.97 in): Days with 50 mm or more rain	32	9	1958	1
100 mm (3.94 in): Days with 100 mm or more rain	6	2	1968	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.

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Data for Itatiaia 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).

Itatiaia Threshold Days by Year (BR002244031)

Key Facts for Itatiaia Thresholds

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

Every Fixed Threshold

Download the Data

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