Birao Threshold Days by Year

11 fixed thresholds counted per year at Birao (CT000004658): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Birao Thresholds

Birao: days with a maximum temperature at or above 30 C (86 F) in 26 years, most in 1979 with 355.
Birao: days with a maximum temperature at or above 35 C (95 F) in 26 years, most in 1973 with 221.
Birao: days with a maximum temperature at or above 40 C (104 F) in 26 years, most in 1973 with 71.
Birao: days with a maximum temperature at or above 90 F (32.2 C) in 26 years, most in 1979 with 321.
11 fixed thresholds have at least one qualifying day at Birao.

Days at or above 30 C (86 F)

26 years with a qualifying day

Days per year at Birao with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 355 in 1979.

Days at or above 30 C (86 F) per year at Birao
Year	Days	Decade average
1952	342	327.4
1953	339	327.4
1954	310	327.4
1955	316	327.4
1956	321	327.4
1957	330	327.4
1958	334	327.4
1960	320	328.2
1961	333	328.2
1962	332	328.2
1963	339	328.2
1964	323	328.2
1965	303	328.2
1967	329	328.2
1968	337	328.2
1969	338	328.2
1970	336	340.1
1971	331	340.1
1972	349	340.1
1973	350	340.1
1974	322	340.1
1975	333	340.1
1977	345	340.1
1978	340	340.1
1979	355	340.1
1980	345	345

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

First to last qualifying date each year at Birao
Year	First date	Last date
1952	1952-01-01	1952-12-31
1953	1953-01-01	1953-12-31
1954	1954-01-01	1954-12-28
1955	1955-01-01	1955-12-30
1956	1956-01-01	1956-12-31
1957	1957-01-01	1957-12-31
1958	1958-01-01	1958-12-31
1960	1960-01-01	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-01	1965-11-30
1967	1967-01-01	1967-12-31
1968	1968-01-01	1968-12-31
1969	1969-01-01	1969-12-31
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-01	1972-12-31
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-30
1977	1977-01-01	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-31

Every Fixed Threshold

Fixed thresholds at Birao
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	26	355	1979	345
35 C (95 F): Days	26	221	1973	216
40 C (104 F): Days	26	71	1973	65
90 F (32.2 C): Days	26	321	1979	301
100 F (37.8 C): Days	26	120	1979	110
110 F (43.3 C): Days	6	5	1980	5
20 C (68 F): Tropical nights (min	26	212	1957	202
25 C (77 F): Days with min	25	23	1975	19
10 mm (0.39 in): Days with 10 mm or more rain	26	39	1962	18
25 mm (0.98 in): Days with 25 mm or more rain	26	13	1955	3
50 mm (1.97 in): Days with 50 mm or more rain	20	4	1954	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

Data for Birao 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).

Birao Threshold Days by Year

Key Facts for Birao Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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