Isla Arenas Weather Records (MXN00004014)

Record envelope, standing records and threshold days for Isla Arenas (MXN00004014), Mexico, with 42 years of record.

Key Facts for Isla Arenas

Isla Arenas (MXN00004014) is a weather station in Mexico at 20.68 latitude and -90.45 longitude, 1 m (3 ft) above sea level.
The station reports from 1970 to 2011, 42 years of record.
1,464 records set at Isla Arenas still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Isla Arenas tied a daily record high minimum temperature of 22.8 C (73.0 F) on 30 December 2011.

About the Station

Location: Mexico, 20.68 latitude, -90.45 longitude.
Elevation: 1 m (3 ft).
Period of record: 1970 to 2011, 42 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Isla Arenas. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Isla Arenas, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	37.2 C (99.0 F)	6.7 C (44.1 F)	n/a	n/a
Feb	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a
Mar	40.6 C (105.1 F)	7.8 C (46.0 F)	n/a	n/a
Apr	41.7 C (107.1 F)	10.0 C (50.0 F)	n/a	n/a
May	41.7 C (107.1 F)	12.8 C (55.0 F)	n/a	n/a
Jun	40.6 C (105.1 F)	12.8 C (55.0 F)	n/a	n/a
Jul	40.0 C (104.0 F)	15.6 C (60.1 F)	n/a	n/a
Aug	40.0 C (104.0 F)	15.6 C (60.1 F)	n/a	n/a
Sep	39.4 C (102.9 F)	10.6 C (51.1 F)	n/a	n/a
Oct	41.7 C (107.1 F)	11.7 C (53.1 F)	n/a	n/a
Nov	38.9 C (102.0 F)	10.0 C (50.0 F)	n/a	n/a
Dec	38.9 C (102.0 F)	7.8 C (46.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Isla Arenas still stand. 2001 holds the most, with 148.

Standing records at Isla Arenas by the year they were set
Year set	Standing records
1973	39
1974	73
1975	100
1976	40
1977	45
1978	43
1979	73
1980	47
1981	45
1982	6
1983	8
1984	14
1985	10
1986	15
1987	21
1988	11
1989	7
1990	8
1991	7
1992	11
1993	23
1994	31
1995	13
1996	13
1997	26
1998	8
1999	20
2000	58
2001	148
2002	110
2003	108
2004	40
2005	32
2006	56
2007	46
2008	57
2009	43
2010	2
2011	7

All-Time Record Progression

1 new records

1 all-time records were set at Isla Arenas between 14 February 2006 and 14 February 2006. Each dot is a new record.

Wettest Day of Each Month

Jun: 216.7 mm (8.5 in)

The wettest day on record for each calendar month at Isla Arenas. The most was 216.7 mm (8.5 in) on 17 June 1993.

Record daily precipitation for each month at Isla Arenas
Month	Record daily precipitation (mm)	Date
Jan	60.5 mm (2.4 in)	23 January 2007
Feb	59.2 mm (2.3 in)	11 February 1983
Mar	41.9 mm (1.6 in)	15 March 2007
Apr	49.8 mm (2.0 in)	1 April 1985
May	90.4 mm (3.6 in)	16 May 2004
Jun	216.7 mm (8.5 in)	17 June 1993
Jul	78.2 mm (3.1 in)	24 July 1980
Aug	77.2 mm (3.0 in)	19 August 1973
Sep	174.8 mm (6.9 in)	24 September 2002
Oct	210.8 mm (8.3 in)	1 October 1995
Nov	63.5 mm (2.5 in)	12 November 2006
Dec	83.8 mm (3.3 in)	4 December 1985

Period of Record Coverage

1973 to 2011

39 years of record at Isla Arenas, 1973 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1973, 1981, 1985, 2001, 2004.

Days with data per year at Isla Arenas
Year	Days with data	Share of year	Complete
1973	154	42%	No
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	365	100%	Yes
1981	274	75%	No
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	245	67%	No
1986	365	100%	Yes
1987	365	100%	Yes
1988	340	93%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	335	92%	Yes
1993	362	99%	Yes
1994	365	100%	Yes
1995	364	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	300	82%	No
2002	334	92%	Yes
2003	363	99%	Yes
2004	305	83%	No
2005	365	100%	Yes
2006	365	100%	Yes
2007	364	100%	Yes
2008	365	100%	Yes
2009	331	91%	Yes
2010	365	100%	Yes
2011	365	100%	Yes

Latest Records

Latest records at Isla Arenas
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 December 2011	Isla Arenas, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	12 years	1 of 100 (Routine)
29 December 2011	Isla Arenas, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	32 years	3 of 100 (Routine)
28 December 2011	Isla Arenas, MX	daily high min	22.8 C (73.0 F)	1.1 C (2.0 F)	32 years	15 of 100 (Routine)
26 December 2011	Isla Arenas, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	33 years	3 of 100 (Routine)
25 December 2011	Isla Arenas, MX	daily high min	22.8 C (73.0 F)	1.1 C (2.0 F)	36 years	17 of 100 (Routine)
24 December 2011	Isla Arenas, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	36 years	3 of 100 (Routine)
23 December 2011	Isla Arenas, MX	daily high min	22.8 C (73.0 F)	1.1 C (2.0 F)	36 years	17 of 100 (Routine)
21 December 2011	Isla Arenas, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	36 years	3 of 100 (Routine)
20 December 2011	Isla Arenas, MX	daily high min	22.8 C (73.0 F)	1.1 C (2.0 F)	0 years	6 of 100 (Routine)
18 December 2011	Isla Arenas, MX	daily high min	22.8 C (73.0 F)	0.6 C (1.1 F)	34 years	14 of 100 (Routine)
16 December 2011	Isla Arenas, MX	daily high min	23.9 C (75.0 F)	1.1 C (2.0 F)	32 years	15 of 100 (Routine)
14 December 2011	Isla Arenas, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	34 years	3 of 100 (Routine)
12 December 2011	Isla Arenas, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	33 years	3 of 100 (Routine)
4 December 2011	Isla Arenas, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	34 years	3 of 100 (Routine)
3 December 2011	Isla Arenas, MX	daily high min	23.9 C (75.0 F)	1.1 C (2.0 F)	33 years	16 of 100 (Routine)
1 December 2011	Isla Arenas, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	33 years	3 of 100 (Routine)
25 November 2011	Isla Arenas, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	34 years	3 of 100 (Routine)
18 November 2011	Isla Arenas, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	36 years	3 of 100 (Routine)
16 November 2011	Isla Arenas, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	32 years	3 of 100 (Routine)
15 November 2011	Isla Arenas, MX	daily high max (Tie)	35.6 C (96.1 F)	tie	32 years	3 of 100 (Routine)

Climate Trend

30 complete years, 1974 to 2011

One stripe for each of 30 complete years at Isla Arenas, 1974 to 2011. Blue stripes are years cooler than the station's own mean of 26.5 C (79.7 F); red stripes are warmer. The coolest year was 2008, at 21.8 C (71.3 F), and the warmest was 1975, at 28.4 C (83.1 F). The strongest colour marks a difference of 4.7 C (8.5 F).

Annual mean temperature at Isla Arenas as warming stripes, 1974 to 2011
Year	Annual mean temperature	Difference from the station mean
1974	28.0 C	+1.53 C
1975	28.4 C	+1.90 C
1976	27.6 C	+1.13 C
1977	27.7 C	+1.22 C
1978	27.7 C	+1.20 C
1979	28.1 C	+1.64 C
1980	27.4 C	+0.88 C
1982	26.7 C	+0.21 C
1983	26.5 C	-0.01 C
1984	26.5 C	+0.01 C
1986	27.1 C	+0.58 C
1987	26.8 C	+0.31 C
1989	26.9 C	+0.43 C
1990	26.6 C	+0.14 C
1991	26.7 C	+0.22 C
1993	26.9 C	+0.45 C
1994	27.6 C	+1.12 C
1995	27.2 C	+0.73 C
1996	25.6 C	-0.84 C
1997	24.1 C	-2.38 C
1998	25.2 C	-1.33 C
1999	26.6 C	+0.13 C
2000	25.4 C	-1.06 C
2003	22.4 C	-4.04 C
2005	26.0 C	-0.48 C
2006	24.9 C	-1.54 C
2007	26.9 C	+0.38 C
2008	21.8 C	-4.67 C
2010	27.3 C	+0.86 C
2011	27.6 C	+1.14 C

The annual mean temperature here has fallen by 0.8 C (0.3 to 1.2) per decade over 1974 to 2011. In Fahrenheit: 1.4 F (0.6 to 2.1) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Isla Arenas
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.8 C (-1.2 to -0.3) per decade	-1.4 F (-2.1 to -0.6) per decade	1974 to 2011	30	Fall
Mean daily maximum	-0.6 C (-1.1 to -0.2) per decade	-1.2 F (-2.0 to -0.3) per decade	1974 to 2011	30	Fall
Mean daily minimum	-0.9 C (-1.3 to -0.4) per decade	-1.5 F (-2.3 to -0.8) per decade	1974 to 2011	30	Fall

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1970 to 2011

Yearly extremes at Isla Arenas: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.7 C (107.1 F)	1975	38.9 C (102.0 F)	39
Coldest night (TNn)	5.0 C (41.0 F)	2006	11.7 C (53.1 F)	39
Wettest day (Rx1day)	216.7 mm (8.5 in)	1993	62.7 mm (2.5 in)	42
Wettest five days (Rx5day)	507.5 mm (20.0 in)	1995	121.5 mm (4.8 in)	42
Longest dry spell (CDD)	148 days	1988	58 days	42

Hottest day (TXx)

The hottest day of the year at Isla Arenas, 1970 to 2011. The record is 41.7 C (107.1 F) in 1975, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Isla Arenas by year
Year	Hottest day (TXx)
1970	n/a
1971	n/a
1972	n/a
1973	38.9 C (102.0 F)
1974	40.6 C (105.1 F)
1975	41.7 C (107.1 F)
1976	40.0 C (104.0 F)
1977	40.6 C (105.1 F)
1978	40.6 C (105.1 F)
1979	40.0 C (104.0 F)
1980	41.7 C (107.1 F)
1981	41.7 C (107.1 F)
1982	38.9 C (102.0 F)
1983	37.8 C (100.0 F)
1984	38.9 C (102.0 F)
1985	38.9 C (102.0 F)
1986	38.9 C (102.0 F)
1987	38.9 C (102.0 F)
1988	37.8 C (100.0 F)
1989	38.9 C (102.0 F)
1990	37.8 C (100.0 F)
1991	38.9 C (102.0 F)
1992	38.9 C (102.0 F)
1993	38.9 C (102.0 F)
1994	40.0 C (104.0 F)
1995	40.0 C (104.0 F)
1996	38.9 C (102.0 F)
1997	37.8 C (100.0 F)
1998	37.8 C (100.0 F)
1999	35.6 C (96.1 F)
2000	35.6 C (96.1 F)
2001	40.0 C (104.0 F)
2002	40.0 C (104.0 F)
2003	40.0 C (104.0 F)
2004	40.0 C (104.0 F)
2005	40.6 C (105.1 F)
2006	41.7 C (107.1 F)
2007	40.6 C (105.1 F)
2008	35.6 C (96.1 F)
2009	35.6 C (96.1 F)
2010	37.8 C (100.0 F)
2011	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at Isla Arenas, 1970 to 2011. The record is 5.0 C (41.0 F) in 2006, marked on the chart; the median year is 11.7 C (53.1 F).

Coldest night (TNn) at Isla Arenas by year
Year	Coldest night (TNn)
1970	n/a
1971	n/a
1972	n/a
1973	11.7 C (53.1 F)
1974	10.6 C (51.1 F)
1975	15.0 C (59.0 F)
1976	10.6 C (51.1 F)
1977	10.6 C (51.1 F)
1978	10.6 C (51.1 F)
1979	13.9 C (57.0 F)
1980	12.8 C (55.0 F)
1981	7.2 C (45.0 F)
1982	11.7 C (53.1 F)
1983	15.0 C (59.0 F)
1984	11.7 C (53.1 F)
1985	15.0 C (59.0 F)
1986	10.6 C (51.1 F)
1987	11.7 C (53.1 F)
1988	12.8 C (55.0 F)
1989	12.8 C (55.0 F)
1990	13.9 C (57.0 F)
1991	13.9 C (57.0 F)
1992	15.0 C (59.0 F)
1993	10.6 C (51.1 F)
1994	13.9 C (57.0 F)
1995	13.9 C (57.0 F)
1996	11.7 C (53.1 F)
1997	10.6 C (51.1 F)
1998	11.7 C (53.1 F)
1999	10.6 C (51.1 F)
2000	10.0 C (50.0 F)
2001	6.7 C (44.1 F)
2002	6.7 C (44.1 F)
2003	7.8 C (46.0 F)
2004	8.9 C (48.0 F)
2005	8.9 C (48.0 F)
2006	5.0 C (41.0 F)
2007	8.9 C (48.0 F)
2008	11.7 C (53.1 F)
2009	11.7 C (53.1 F)
2010	15.6 C (60.1 F)
2011	20.0 C (68.0 F)

Wettest day (Rx1day)

The wettest day of the year at Isla Arenas, 1970 to 2011. The record is 216.7 mm (8.5 in) in 1993, marked on the chart; the median year is 62.7 mm (2.5 in).

Wettest day (Rx1day) at Isla Arenas by year
Year	Wettest day (Rx1day)
1970	57.9 mm (2.3 in)
1971	43.9 mm (1.7 in)
1972	42.9 mm (1.7 in)
1973	77.2 mm (3.0 in)
1974	151.4 mm (6.0 in)
1975	98.6 mm (3.9 in)
1976	75.9 mm (3.0 in)
1977	80.3 mm (3.2 in)
1978	59.9 mm (2.4 in)
1979	54.9 mm (2.2 in)
1980	78.2 mm (3.1 in)
1981	81.3 mm (3.2 in)
1982	63.2 mm (2.5 in)
1983	68.3 mm (2.7 in)
1984	49.3 mm (1.9 in)
1985	83.8 mm (3.3 in)
1986	54.9 mm (2.2 in)
1987	43.4 mm (1.7 in)
1988	68.3 mm (2.7 in)
1989	62.2 mm (2.4 in)
1990	62.2 mm (2.4 in)
1991	43.2 mm (1.7 in)
1992	73.4 mm (2.9 in)
1993	216.7 mm (8.5 in)
1994	45.7 mm (1.8 in)
1995	210.8 mm (8.3 in)
1996	58.4 mm (2.3 in)
1997	46.2 mm (1.8 in)
1998	36.6 mm (1.4 in)
1999	48.5 mm (1.9 in)
2000	54.4 mm (2.1 in)
2001	70.6 mm (2.8 in)
2002	174.8 mm (6.9 in)
2003	68.1 mm (2.7 in)
2004	90.4 mm (3.6 in)
2005	90.2 mm (3.6 in)
2006	63.5 mm (2.5 in)
2007	60.5 mm (2.4 in)
2008	57.7 mm (2.3 in)
2009	76.7 mm (3.0 in)
2010	37.6 mm (1.5 in)
2011	54.4 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Isla Arenas, 1970 to 2011. The record is 507.5 mm (20.0 in) in 1995, marked on the chart; the median year is 121.5 mm (4.8 in).

Wettest five days (Rx5day) at Isla Arenas by year
Year	Wettest five days (Rx5day)
1970	89.4 mm (3.5 in)
1971	109.5 mm (4.3 in)
1972	103.9 mm (4.1 in)
1973	146.3 mm (5.8 in)
1974	236.2 mm (9.3 in)
1975	188.3 mm (7.4 in)
1976	154.2 mm (6.1 in)
1977	118.6 mm (4.7 in)
1978	116.8 mm (4.6 in)
1979	106.8 mm (4.2 in)
1980	140.8 mm (5.5 in)
1981	208.6 mm (8.2 in)
1982	116.6 mm (4.6 in)
1983	139.0 mm (5.5 in)
1984	85.7 mm (3.4 in)
1985	138.8 mm (5.5 in)
1986	87.2 mm (3.4 in)
1987	68.5 mm (2.7 in)
1988	130.3 mm (5.1 in)
1989	92.0 mm (3.6 in)
1990	106.0 mm (4.2 in)
1991	58.7 mm (2.3 in)
1992	146.8 mm (5.8 in)
1993	302.3 mm (11.9 in)
1994	91.7 mm (3.6 in)
1995	507.5 mm (20.0 in)
1996	130.6 mm (5.1 in)
1997	124.4 mm (4.9 in)
1998	71.4 mm (2.8 in)
1999	87.7 mm (3.5 in)
2000	76.3 mm (3.0 in)
2001	139.5 mm (5.5 in)
2002	452.5 mm (17.8 in)
2003	125.0 mm (4.9 in)
2004	158.4 mm (6.2 in)
2005	143.1 mm (5.6 in)
2006	129.6 mm (5.1 in)
2007	71.8 mm (2.8 in)
2008	141.8 mm (5.6 in)
2009	85.3 mm (3.4 in)
2010	92.7 mm (3.6 in)
2011	70.4 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Isla Arenas, 1970 to 2011. The record is 148 days in 1988, marked on the chart; the median year is 58 days.

Longest dry spell (CDD) at Isla Arenas by year
Year	Longest dry spell (CDD)
1970	90 days
1971	64 days
1972	78 days
1973	41 days
1974	56 days
1975	77 days
1976	40 days
1977	43 days
1978	56 days
1979	53 days
1980	105 days
1981	64 days
1982	72 days
1983	53 days
1984	76 days
1985	34 days
1986	120 days
1987	48 days
1988	148 days
1989	79 days
1990	54 days
1991	50 days
1992	33 days
1993	40 days
1994	63 days
1995	43 days
1996	60 days
1997	39 days
1998	66 days
1999	105 days
2000	132 days
2001	50 days
2002	50 days
2003	67 days
2004	39 days
2005	75 days
2006	43 days
2007	56 days
2008	69 days
2009	72 days
2010	56 days
2011	123 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

40 years, 1970 to 2011

A day with at least 61.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 265.2 mm (10.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Isla Arenas: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	61.2 mm (2.4 in)
5 years	87.8 mm (3.5 in)
10 years	113.2 mm (4.5 in)
25 years	158.3 mm (6.2 in)
50 years	204.6 mm (8.1 in)	Longer than the 40 years of record
100 years	265.2 mm (10.4 in)	Longer than the 40 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 40 years of values from 1970 to 2011.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 216.7 mm (8.5 in) in 1993; 210.8 mm (8.3 in) in 1995; 174.8 mm (6.9 in) in 2002.

Download the Data

Data for Isla Arenas standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).