Mayumba Threshold Days by Year (GB000004503)

9 fixed thresholds counted per year at Mayumba (GB000004503): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mayumba Thresholds

Mayumba: days with a maximum temperature at or above 30 C (86 F) in 27 years, most in 1973 with 118.
Mayumba: nights with a minimum temperature at or above 20 C (68 F) in 27 years, most in 1978 with 335.
Mayumba: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1961 with 67.
Mayumba: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 1954 with 36.
9 fixed thresholds have at least one qualifying day at Mayumba.

Days at or above 30 C (86 F)

27 years with a qualifying day

Days per year at Mayumba with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 118 in 1973.

Days at or above 30 C (86 F) per year at Mayumba
Year	Days	Decade average
1950	84	78.3
1951	76	78.3
1952	107	78.3
1953	98	78.3
1954	60	78.3
1955	49	78.3
1956	77	78.3
1957	79	78.3
1958	75	78.3
1961	81	77.6
1962	71	77.6
1963	92	77.6
1964	83	77.6
1965	58	77.6
1967	83	77.6
1968	61	77.6
1969	92	77.6
1970	70	86.7
1971	54	86.7
1972	77	86.7
1973	118	86.7
1974	100	86.7
1975	87	86.7
1977	94	86.7
1978	80	86.7
1979	100	86.7
1980	80	80

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

First to last qualifying date each year at Mayumba
Year	First date	Last date
1950	1950-01-03	1950-06-11
1951	1951-02-06	1951-12-27
1952	1952-01-04	1952-12-26
1953	1953-01-12	1953-11-29
1954	1954-01-05	1954-05-10
1955	1955-02-02	1955-11-26
1956	1956-01-18	1956-05-05
1957	1957-01-05	1957-11-17
1958	1958-01-13	1958-12-31
1961	1961-01-03	1961-05-12
1962	1962-01-25	1962-12-31
1963	1963-01-15	1963-12-29
1964	1964-01-09	1964-05-01
1965	1965-01-09	1965-05-20
1967	1967-01-02	1967-05-20
1968	1968-01-05	1968-12-22
1969	1969-01-08	1969-12-15
1970	1970-01-01	1970-05-05
1971	1971-01-25	1971-05-22
1972	1972-01-10	1972-12-31
1973	1973-01-01	1973-12-17
1974	1974-01-04	1974-12-21
1975	1975-01-03	1975-11-27
1977	1977-01-03	1977-12-16
1978	1978-01-03	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-20

Every Fixed Threshold

Fixed thresholds at Mayumba
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	27	118	1973	80
90 F (32.2 C): Days	12	17	1952	4
20 C (68 F): Tropical nights (min	27	335	1978	293
25 C (77 F): Days with min	23	41	1964	20
10 mm (0.39 in): Days with 10 mm or more rain	27	67	1961	46
25 mm (0.98 in): Days with 25 mm or more rain	27	36	1954	23
50 mm (1.97 in): Days with 50 mm or more rain	27	16	1961	6
100 mm (3.94 in): Days with 100 mm or more rain	19	4	1950	2
200 mm (7.87 in): Days with 200 mm or more rain	3	1	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 1950.

Download the Data

Data for Mayumba 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).

Mayumba Threshold Days by Year (GB000004503)

Key Facts for Mayumba Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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