Isla Arenas Threshold Days by Year (MXN00004014)

12 fixed thresholds counted per year at Isla Arenas (MXN00004014): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Isla Arenas Thresholds

Isla Arenas: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1993 with 40.
Isla Arenas: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1995 with 20.
Isla Arenas: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 2010 with 365.
Isla Arenas: days with a maximum temperature at or above 35 C (95 F) in 34 years, most in 1975 with 213.
12 fixed thresholds have at least one qualifying day at Isla Arenas.

Days at or above 30 C (86 F)

34 years with a qualifying day

Days per year at Isla Arenas with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 365 in 2010.

Days at or above 30 C (86 F) per year at Isla Arenas
Year	Days	Decade average
1974	349	345
1975	351	345
1976	343	345
1977	345	345
1978	342	345
1979	340	345
1980	315	319.9
1982	333	319.9
1983	303	319.9
1984	331	319.9
1986	334	319.9
1987	324	319.9
1988	283	319.9
1989	336	319.9
1990	310	300.9
1991	302	300.9
1992	262	300.9
1993	307	300.9
1994	335	300.9
1995	331	300.9
1996	273	300.9
1997	248	300.9
1998	286	300.9
1999	355	300.9
2000	315	229
2002	233	229
2003	164	229
2005	323	229
2006	255	229
2007	262	229
2008	99	229
2009	181	229
2010	365	365
2011	365	365

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

First to last qualifying date each year at Isla Arenas
Year	First date	Last date
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-31
1976	1976-01-01	1976-12-31
1977	1977-01-01	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-05	1979-12-31
1980	1980-01-01	1980-12-21
1982	1982-01-01	1982-12-31
1983	1983-01-01	1983-12-28
1984	1984-01-02	1984-12-31
1986	1986-01-01	1986-12-29
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-31
1990	1990-01-02	1990-12-31
1991	1991-01-01	1991-12-22
1992	1992-01-01	1992-11-25
1993	1993-01-04	1993-12-30
1994	1994-01-02	1994-12-31
1995	1995-01-01	1995-12-30
1996	1996-01-01	1996-11-22
1997	1997-02-07	1997-12-27
1998	1998-01-28	1998-12-31
1999	1999-01-01	1999-12-31
2000	2000-01-01	2000-12-03
2002	2002-02-01	2002-11-11
2003	2003-02-06	2003-11-18
2005	2005-01-01	2005-12-25
2006	2006-02-25	2006-12-31
2007	2007-01-04	2007-11-21
2008	2008-03-23	2008-10-10
2009	2009-03-27	2009-12-31
2010	2010-01-01	2010-12-31
2011	2011-01-01	2011-12-31

Every Fixed Threshold

Fixed thresholds at Isla Arenas
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	34	365	2010	365
35 C (95 F): Days	34	213	1975	94
40 C (104 F): Days	14	17	2007	17
90 F (32.2 C): Days	34	280	1974	268
100 F (37.8 C): Days	29	81	2007	6
20 C (68 F): Tropical nights (min	34	365	2011	365
25 C (77 F): Days with min	28	99	1979	9
10 mm (0.39 in): Days with 10 mm or more rain	40	40	1993	25
25 mm (0.98 in): Days with 25 mm or more rain	40	20	1995	4
50 mm (1.97 in): Days with 50 mm or more rain	30	7	1974	1
100 mm (3.94 in): Days with 100 mm or more rain	4	2	1995	2
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1993	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1974.

Download the Data

Data for Isla 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Isla Arenas Threshold Days by Year (MXN00004014)

Key Facts for Isla Arenas Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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