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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Cayo Arenas Threshold Days by Year (MXN00004006)

9 fixed thresholds counted per year at Cayo Arenas (MXN00004006): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cayo Arenas Thresholds

  • Cayo Arenas: days with 10 mm (0.39 in) or more of precipitation in 25 years, most in 1975 with 21.
  • Cayo Arenas: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1975 with 10.
  • Cayo Arenas: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 1981 with 284.
  • Cayo Arenas: days with a maximum temperature at or above 90 F (32.2 C) in 16 years, most in 1979 with 65.
  • 9 fixed thresholds have at least one qualifying day at Cayo Arenas.
17 years with a qualifying day
Days at or above 30 C (86 F) per year at Cayo Arenas Days per year at Cayo Arenas with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 284 in 1981. 01002003001933: 1681934: 1761935: 1841936: 1891937: 1531938: 1561968: 1351969: 1361970: 1491971: 1461975: 1561976: 1491977: 1951978: 2031979: 2711981: 2841985: 203193319351937196819701975197719791985
Days per year at Cayo Arenas with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 284 in 1981.
Days at or above 30 C (86 F) per year at Cayo Arenas
YearDaysDecade average
1933168171
1934176171
1935184171
1936189171
1937153171
1938156171
1968135135.5
1969136135.5
1970149181.3
1971146181.3
1975156181.3
1976149181.3
1977195181.3
1978203181.3
1979271181.3
1981284243.5
1985203243.5
First to last qualifying date each year at Cayo Arenas For each year, a bar from the first to the last day at Cayo Arenas meeting 30 C (86 F). 1933: 28 April 1933 to 6 November 19331934: 16 April 1934 to 31 December 19341935: 1 January 1935 to 14 December 19351936: 15 January 1936 to 30 December 19361937: 1 January 1937 to 27 November 19371938: 30 March 1938 to 4 December 19381968: 1 January 1968 to 22 December 19681969: 26 May 1969 to 31 December 19691970: 19 April 1970 to 31 December 19701971: 4 January 1971 to 3 November 19711975: 12 January 1975 to 20 September 19751976: 27 March 1976 to 17 November 19761977: 18 March 1977 to 30 December 19771978: 11 April 1978 to 30 December 19781979: 1 January 1979 to 30 December 19791981: 1 January 1981 to 23 December 19811985: 27 January 1985 to 30 November 1985193319361968197119771981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cayo Arenas meeting 30 C (86 F).
First to last qualifying date each year at Cayo Arenas
YearFirst dateLast date
19331933-04-281933-11-06
19341934-04-161934-12-31
19351935-01-011935-12-14
19361936-01-151936-12-30
19371937-01-011937-11-27
19381938-03-301938-12-04
19681968-01-011968-12-22
19691969-05-261969-12-31
19701970-04-191970-12-31
19711971-01-041971-11-03
19751975-01-121975-09-20
19761976-03-271976-11-17
19771977-03-181977-12-30
19781978-04-111978-12-30
19791979-01-011979-12-30
19811981-01-011981-12-23
19851985-01-271985-11-30

Every Fixed Threshold

Fixed thresholds at Cayo Arenas
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days172841981203
35 C (95 F): Days51719795
90 F (32.2 C): Days166519794
20 C (68 F): Tropical nights (min153601933309
25 C (77 F): Days with min153081979220
10 mm (0.39 in): Days with 10 mm or more rain252119752
25 mm (0.98 in): Days with 25 mm or more rain181019755
50 mm (1.97 in): Days with 50 mm or more rain12519755
100 mm (3.94 in): Days with 100 mm or more rain6119471

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1933.

Download the Data

  • Data for Cayo Arenas 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 . Last revised (2025-12-31).