Birakan Threshold Days by Year (RSM00031703)

3 fixed thresholds counted per year at Birakan (RSM00031703): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Birakan Thresholds

Birakan: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1981 with 28.
Birakan: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1967 with 10.
Birakan: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1961 with 3.
3 fixed thresholds have at least one qualifying day at Birakan.

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

32 years with a qualifying day

Days per year at Birakan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1981.

Days with 10 mm (0.39 in) or more of precipitation per year at Birakan
Year	Days	Decade average
1960	26	21.4
1961	25	21.4
1962	20	21.4
1964	24	21.4
1965	21	21.4
1966	13	21.4
1967	23	21.4
1968	22	21.4
1969	19	21.4
1970	18	19.9
1971	22	19.9
1972	23	19.9
1973	25	19.9
1974	19	19.9
1975	19	19.9
1976	21	19.9
1977	21	19.9
1978	18	19.9
1979	13	19.9
1980	23	20.5
1981	28	20.5
1982	17	20.5
1983	27	20.5
1984	19	20.5
1985	26	20.5
1986	10	20.5
1987	23	20.5
1988	19	20.5
1989	13	20.5
1990	27	25.3
1991	24	25.3
1992	25	25.3

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

First to last qualifying date each year at Birakan
Year	First date	Last date
1960	1960-05-04	1960-10-01
1961	1961-05-07	1961-10-16
1962	1962-05-05	1962-09-28
1964	1964-06-04	1964-10-15
1965	1965-05-09	1965-10-15
1966	1966-06-12	1966-10-29
1967	1967-04-30	1967-09-09
1968	1968-05-13	1968-10-03
1969	1969-04-01	1969-11-10
1970	1970-03-29	1970-09-29
1971	1971-05-12	1971-10-02
1972	1972-04-16	1972-11-22
1973	1973-04-25	1973-11-10
1974	1974-04-22	1974-10-31
1975	1975-04-09	1975-09-21
1976	1976-04-23	1976-09-09
1977	1977-03-24	1977-10-30
1978	1978-04-30	1978-12-02
1979	1979-04-14	1979-12-20
1980	1980-04-19	1980-12-03
1981	1981-05-03	1981-10-22
1982	1982-04-16	1982-12-23
1983	1983-04-03	1983-11-17
1984	1984-04-29	1984-09-17
1985	1985-04-23	1985-10-16
1986	1986-05-22	1986-09-23
1987	1987-05-16	1987-10-19
1988	1988-06-15	1988-11-24
1989	1989-03-31	1989-10-05
1990	1990-05-11	1990-10-14
1991	1991-04-08	1991-10-19
1992	1992-04-08	1992-10-02

Every Fixed Threshold

Fixed thresholds at Birakan
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	32	28	1981	25
25 mm (0.98 in): Days with 25 mm or more rain	31	10	1967	6
50 mm (1.97 in): Days with 50 mm or more rain	12	3	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

Data for Birakan 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).

Birakan Threshold Days by Year (RSM00031703)

Key Facts for Birakan Thresholds

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

Every Fixed Threshold

Download the Data

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