Coatzacoalcos climate

Name: Coatzacoalcos
Address: MX

Coatzacoalcos is warmest in May, with average highs of 32 °C, and coldest in January, when nights average 20 °C. September is the wettest month (324 mm) and April the driest (22 mm). Figures are 1991–2020 climate normals.

Across a full year Coatzacoalcos averages 1,877 mm of rain and 315 days above 25 °C.

Mexico · population 310,698 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month May 32 °C
Coldest month January 20 °C
Driest month April 22 mm
Wettest month September 324 mm
Least cloud April 37 % cloud
Hottest on record May 41 °C
Coldest on record December 13 °C
Warmest sea September 29 °C

What to expectCoatzacoalcos through the year

Coatzacoalcos has a clear annual cycle: average daily highs run from 25 °C in January to 32 °C in May, a swing of 6.1 °C in mean temperature across the year.

Counted across a normal year, 315 days a year reach 25 °C, 113 of them reach 30 °C. The warmest reading in the 1991–2020 record is 41 °C, in May.

Rain is strongly seasonal. September averages 324 mm against 22 mm in April — 14 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Coatzacoalcos is warmest in September at 29 °C and coldest in February at 24 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	25.1 °C	78 mm	56 %
February	26.6 °C	37 mm	46 %
March	29.2 °C	24 mm	38 %
April	32.0 °C	22 mm	37 %
May	32.5 °C	75 mm	48 %
June	30.7 °C	247 mm	72 %
July	29.6 °C	281 mm	74 %
August	29.6 °C	318 mm	77 %
September	29.1 °C	324 mm	81 %
October	28.0 °C	243 mm	67 %
November	26.5 °C	147 mm	57 %
December	25.6 °C	82 mm	56 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	25.1 °C	20.2 °C	22.3 °C	31.8 °C	14.8 °C	15	1
February	26.6 °C	20.6 °C	23.1 °C	34.9 °C	14.5 °C	19	4
March	29.2 °C	21.8 °C	24.9 °C	37.0 °C	14.7 °C	27	12
April	32.0 °C	23.8 °C	27.2 °C	40.7 °C	17.8 °C	30	20
May	32.5 °C	25.2 °C	28.3 °C	41.4 °C	19.7 °C	31	24
June	30.7 °C	25.1 °C	27.6 °C	39.3 °C	22.2 °C	30	17
July	29.6 °C	24.8 °C	27.0 °C	33.6 °C	22.7 °C	31	11
August	29.6 °C	24.7 °C	26.9 °C	33.6 °C	23.0 °C	31	10
September	29.1 °C	24.4 °C	26.4 °C	33.9 °C	20.3 °C	30	8
October	28.0 °C	23.6 °C	25.5 °C	33.3 °C	18.8 °C	29	5
November	26.5 °C	22.1 °C	24.1 °C	32.1 °C	16.1 °C	23	2
December	25.6 °C	20.9 °C	22.9 °C	31.8 °C	13.4 °C	19	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	78 mm	11	11 h/day	56 %	84 %	18 km/h	24.1 °C
February	37 mm	7	12 h/day	46 %	82 %	18 km/h	24.0 °C
March	24 mm	5	12 h/day	38 %	76 %	20 km/h	24.9 °C
April	22 mm	4	13 h/day	37 %	73 %	20 km/h	26.6 °C
May	75 mm	10	13 h/day	48 %	75 %	18 km/h	28.0 °C
June	247 mm	23	13 h/day	72 %	83 %	15 km/h	28.7 °C
July	281 mm	27	13 h/day	74 %	86 %	16 km/h	28.7 °C
August	318 mm	27	13 h/day	77 %	87 %	15 km/h	29.3 °C
September	324 mm	26	12 h/day	81 %	87 %	14 km/h	29.4 °C
October	243 mm	21	12 h/day	67 %	86 %	16 km/h	28.3 °C
November	147 mm	16	11 h/day	57 %	85 %	18 km/h	26.7 °C
December	82 mm	13	11 h/day	56 %	85 %	17 km/h	25.3 °C

How Coatzacoalcos compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Coatzacoalcos	32 °C	20 °C	1,877 mm	315
Villahermosa · Mexico	35 °C	20 °C	1,640 mm	343
Tuxtepec · Mexico	34 °C	19 °C	2,348 mm	328
Tuxtla · Mexico	34 °C	17 °C	1,653 mm	340
Veracruz · Mexico	33 °C	19 °C	1,126 mm	329
San Cristóbal de las Casas · Mexico	24 °C	10.0 °C	2,224 mm	18
Oaxaca · Mexico	30 °C	11 °C	740 mm	219

Where Coatzacoalcos ranks

Ranking	Position	Value
The warmest places in North America in April	20thof 50	32 °C
The warmest places in North America in May	25thof 50	32 °C
Best beach destinations in the world in March	35thof 50	95/100
The warmest places in North America in March	42ndof 50	29 °C

Planning a trip? See the best time to visit Coatzacoalcos.

QuestionsCommon questions about Coatzacoalcos’s climate

When is the best time to visit Coatzacoalcos?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, May is the warmest month and April the driest. The month-by-month table above has the full picture.

How hot does Coatzacoalcos get?

In May, the warmest month, daily highs average 32 °C. About 113 days a year pass 30 °C. The highest value in the 1991–2020 record is 41 °C.

How cold does it get in winter?

Nights average 20 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Coatzacoalcos?

September, averaging 324 mm over 26 days with rain. The driest month is April with 22 mm. The year as a whole averages 1,877 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Coatzacoalcos rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.