Bitam Threshold Days by Year (GB000004510)

9 fixed thresholds counted per year at Bitam (GB000004510): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bitam Thresholds

Bitam: days with a maximum temperature at or above 30 C (86 F) in 24 years, most in 1963 with 164.
Bitam: nights with a minimum temperature at or above 20 C (68 F) in 24 years, most in 1963 with 231.
Bitam: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1956 with 74.
Bitam: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1956 with 27.
9 fixed thresholds have at least one qualifying day at Bitam.

Days at or above 30 C (86 F)

24 years with a qualifying day

Days per year at Bitam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 164 in 1963.

Days at or above 30 C (86 F) per year at Bitam
Year	Days	Decade average
1954	102	101.6
1955	65	101.6
1956	71	101.6
1957	109	101.6
1958	161	101.6
1961	96	125.8
1962	150	125.8
1963	164	125.8
1964	121	125.8
1965	87	125.8
1967	145	125.8
1968	122	125.8
1969	121	125.8
1970	124	103.4
1971	106	103.4
1972	100	103.4
1973	118	103.4
1974	77	103.4
1975	90	103.4
1976	60	103.4
1977	112	103.4
1978	115	103.4
1979	132	103.4
1980	139	139

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

First to last qualifying date each year at Bitam
Year	First date	Last date
1954	1954-01-02	1954-12-20
1955	1955-02-02	1955-12-19
1956	1956-01-07	1956-12-25
1957	1957-01-10	1957-12-31
1958	1958-01-01	1958-12-31
1961	1961-01-02	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-02	1963-12-23
1964	1964-01-02	1964-12-21
1965	1965-01-03	1965-12-21
1967	1967-01-05	1967-12-30
1968	1968-01-06	1968-12-31
1969	1969-01-01	1969-12-28
1970	1970-01-01	1970-12-18
1971	1971-01-07	1971-12-13
1972	1972-01-01	1972-12-29
1973	1973-01-01	1973-12-06
1974	1974-01-21	1974-12-01
1975	1975-01-03	1975-12-18
1976	1976-01-11	1976-12-10
1977	1977-01-16	1977-12-19
1978	1978-01-01	1978-12-27
1979	1979-01-02	1979-12-29
1980	1980-01-07	1980-12-29

Every Fixed Threshold

Fixed thresholds at Bitam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	24	164	1963	139
35 C (95 F): Days	4	1	1969	1
90 F (32.2 C): Days	23	24	1980	24
100 F (37.8 C): Days	1	1	1977	1
20 C (68 F): Tropical nights (min	24	231	1963	223
10 mm (0.39 in): Days with 10 mm or more rain	24	74	1956	61
25 mm (0.98 in): Days with 25 mm or more rain	24	27	1956	17
50 mm (1.97 in): Days with 50 mm or more rain	24	9	1964	5
100 mm (3.94 in): Days with 100 mm or more rain	4	2	1964	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.

Download the Data

Data for Bitam 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).

Bitam Threshold Days by Year (GB000004510)

Key Facts for Bitam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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