Heroica Matamoros climate

Name: Heroica Matamoros
Address: MX

Heroica Matamoros is warmest in August, with average highs of 33 °C, and coldest in January, when nights average 14 °C. September is the wettest month (110 mm) and February the driest (29 mm). Figures are 1991–2020 climate normals.

Across a full year Heroica Matamoros averages 640 mm of rain, 265 days above 25 °C and 0 days below freezing.

Mexico · population 510,739 · 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 August 33 °C
Coldest month January 14 °C
Driest month February 29 mm
Wettest month September 110 mm
Least cloud June 42 % cloud
Hottest on record April 39 °C
Coldest on record December -1.6 °C

What to expectHeroica Matamoros through the year

Heroica Matamoros has a clear annual cycle: average daily highs run from 21 °C in January to 33 °C in August, a swing of 12 °C in mean temperature across the year.

Counted across a normal year, 265 days a year reach 25 °C, 140 of them reach 30 °C, 0 nights drop below freezing. The warmest reading in the 1991–2020 record is 39 °C, in April.

Rain is strongly seasonal. September averages 110 mm against 29 mm in February — 3.7 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	21.4 °C	35 mm	60 %
February	23.1 °C	29 mm	58 %
March	25.2 °C	40 mm	55 %
April	27.9 °C	49 mm	54 %
May	30.2 °C	48 mm	49 %
June	31.9 °C	58 mm	42 %
July	32.5 °C	60 mm	43 %
August	32.8 °C	53 mm	44 %
September	30.8 °C	110 mm	51 %
October	28.6 °C	78 mm	43 %
November	25.2 °C	44 mm	50 %
December	22.4 °C	36 mm	58 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	21.4 °C	14.1 °C	17.1 °C	31.6 °C	-0.5 °C	5	0
February	23.1 °C	15.6 °C	18.6 °C	33.0 °C	-1.5 °C	9	0
March	25.2 °C	17.9 °C	20.8 °C	35.7 °C	4.1 °C	17	2
April	27.9 °C	20.7 °C	23.6 °C	39.2 °C	6.8 °C	26	6
May	30.2 °C	23.6 °C	26.4 °C	37.9 °C	13.2 °C	31	17
June	31.9 °C	25.5 °C	28.3 °C	37.8 °C	20.5 °C	30	27
July	32.5 °C	26.0 °C	28.8 °C	38.2 °C	21.8 °C	31	29
August	32.8 °C	26.1 °C	29.0 °C	38.2 °C	21.9 °C	31	29
September	30.8 °C	24.6 °C	27.3 °C	39.0 °C	14.9 °C	30	20
October	28.6 °C	21.9 °C	24.8 °C	34.3 °C	6.6 °C	29	9
November	25.2 °C	18.2 °C	21.1 °C	31.7 °C	3.0 °C	18	1
December	22.4 °C	15.1 °C	18.2 °C	31.8 °C	-1.6 °C	9	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	35 mm	6	11 h/day	60 %	74 %	26 km/h
February	29 mm	5	11 h/day	58 %	76 %	27 km/h
March	40 mm	5	12 h/day	55 %	75 %	28 km/h
April	49 mm	6	13 h/day	54 %	75 %	29 km/h
May	48 mm	7	13 h/day	49 %	76 %	28 km/h
June	58 mm	10	14 h/day	42 %	75 %	26 km/h
July	60 mm	8	14 h/day	43 %	75 %	26 km/h
August	53 mm	10	13 h/day	44 %	74 %	24 km/h
September	110 mm	15	12 h/day	51 %	77 %	21 km/h
October	78 mm	10	12 h/day	43 %	74 %	23 km/h
November	44 mm	7	11 h/day	50 %	73 %	24 km/h
December	36 mm	6	11 h/day	58 %	74 %	26 km/h

How Heroica Matamoros 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
Heroica Matamoros	33 °C	14 °C	640 mm	265
Reynosa · Mexico	36 °C	12 °C	561 mm	296
Corpus Christi · United States	32 °C	12 °C	781 mm	215
Ciudad Benito Juárez · Mexico	33 °C	9.7 °C	553 mm	252
Nuevo Laredo · Mexico	37 °C	10 °C	497 mm	281
Ciudad Apodaca · Mexico	34 °C	9.5 °C	575 mm	256
Monterrey · Mexico	33 °C	9.8 °C	582 mm	244

Where Heroica Matamoros ranks

Ranking	Position	Value
The warmest places in North America in June	49th of 50	32 °C

Planning a trip? See the best time to visit Heroica Matamoros.

QuestionsCommon questions about Heroica Matamoros’s climate

When is the best time to visit Heroica Matamoros?

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

How hot does Heroica Matamoros get?

In August, the warmest month, daily highs average 33 °C. About 140 days a year pass 30 °C. The highest value in the 1991–2020 record is 39 °C.

How cold does it get in winter?

Nights average 14 °C in January, the coldest month. A normal year has 0 nights below freezing.

Which month is wettest in Heroica Matamoros?

September, averaging 110 mm over 15 days with rain. The driest month is February with 29 mm. The year as a whole averages 640 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 Heroica Matamoros 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
Data point: 25.880°, -97.504° (the coordinates the reanalysis values are taken for)
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.