Cotonou Threshold Days by Year (BN000005344)

10 fixed thresholds counted per year at Cotonou (BN000005344): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cotonou Thresholds

Cotonou: days with a maximum temperature at or above 30 C (86 F) in 42 years, most in 1941 with 286.
Cotonou: days with a maximum temperature at or above 90 F (32.2 C) in 42 years, most in 1944 with 174.
Cotonou: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1968 with 62.
Cotonou: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1968 with 32.
10 fixed thresholds have at least one qualifying day at Cotonou.

Days at or above 30 C (86 F)

42 years with a qualifying day

Days per year at Cotonou with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 286 in 1941.

Days at or above 30 C (86 F) per year at Cotonou
Year	Days	Decade average
1941	286	268.4
1942	255	268.4
1944	275	268.4
1945	268	268.4
1946	243	268.4
1947	276	268.4
1948	266	268.4
1949	278	268.4
1950	252	201.6
1951	271	201.6
1952	215	201.6
1953	188	201.6
1954	169	201.6
1955	185	201.6
1956	180	201.6
1957	156	201.6
1958	196	201.6
1959	204	201.6
1960	205	219.1
1961	211	219.1
1962	206	219.1
1963	244	219.1
1964	188	219.1
1965	200	219.1
1967	228	219.1
1968	249	219.1
1969	241	219.1
1970	269	222.6
1971	245	222.6
1972	244	222.6
1973	261	222.6
1974	201	222.6
1975	210	222.6
1976	177	222.6
1977	223	222.6
1978	187	222.6
1979	209	222.6
1980	204	204
1993	233	220.8
1994	214	220.8
1996	217	220.8
1997	219	220.8

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

First to last qualifying date each year at Cotonou
Year	First date	Last date
1941	1941-01-02	1941-12-31
1942	1942-01-01	1942-12-31
1944	1944-01-01	1944-12-30
1945	1945-01-01	1945-12-31
1946	1946-01-01	1946-12-31
1947	1947-01-01	1947-12-31
1948	1948-01-01	1948-12-31
1949	1949-01-01	1949-12-31
1950	1950-01-01	1950-12-31
1951	1951-01-01	1951-12-31
1952	1952-01-03	1952-12-31
1953	1953-01-01	1953-12-28
1954	1954-01-08	1954-12-31
1955	1955-01-01	1955-12-29
1956	1956-01-05	1956-12-31
1957	1957-01-19	1957-12-31
1958	1958-01-01	1958-12-31
1959	1959-01-01	1959-12-31
1960	1960-01-01	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-30
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-01	1965-12-30
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	1974-12-30
1975	1975-01-05	1975-12-28
1976	1976-01-04	1976-12-31
1977	1977-01-03	1977-12-29
1978	1978-01-03	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-28
1993	1993-01-01	1993-12-31
1994	1994-01-01	1994-12-31
1996	1996-01-01	1996-12-31
1997	1997-01-01	1997-12-31

Every Fixed Threshold

Fixed thresholds at Cotonou
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	42	286	1941	219
35 C (95 F): Days	13	6	1951	1
90 F (32.2 C): Days	42	174	1944	37
100 F (37.8 C): Days	2	1	1952	1
20 C (68 F): Tropical nights (min	38	366	1972	362
25 C (77 F): Days with min	38	167	1941	140
10 mm (0.39 in): Days with 10 mm or more rain	39	62	1968	23
25 mm (0.98 in): Days with 25 mm or more rain	39	32	1968	14
50 mm (1.97 in): Days with 50 mm or more rain	38	15	1968	2
100 mm (3.94 in): Days with 100 mm or more rain	21	3	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 1941.

Download the Data

Data for Cotonou 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Cotonou Threshold Days by Year (BN000005344)

Key Facts for Cotonou Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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