Heroica Matamoros climate

Tamaulipas, Mexico · 25.88°N, 97.50°W · elevation 16 m · population 510,739

Warmest month
August
high 34 °C93 °F
Coldest month
January
low 12 °C54 °F
Wettest month
September
144 mm5.7 in
Best time to visit
November–April
by our comfort score
Annual precipitation
645 mm25 in
February driest
Year average
24 °C76 °F
humid subtropical (Cfa)

Heroica Matamoros (Tamaulipas, Mexico) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 24 °C76 °F, and about 645 mm25 in of precipitation falls in an average year.

Temperature by month

Average highAverage low
10°15°20°25°30°35°50°60°70°80°90°JFMAMJJASOND34°93°12°54°January: high 22 °C / 71 °F, low 12 °C / 54 °FFebruary: high 24 °C / 75 °F, low 14 °C / 56 °FMarch: high 27 °C / 80 °F, low 16 °C / 61 °FApril: high 30 °C / 86 °F, low 20 °C / 67 °FMay: high 32 °C / 89 °F, low 23 °C / 73 °FJune: high 34 °C / 93 °F, low 25 °C / 77 °FJuly: high 33 °C / 92 °F, low 25 °C / 78 °FAugust: high 34 °C / 93 °F, low 26 °C / 78 °FSeptember: high 32 °C / 90 °F, low 24 °C / 76 °FOctober: high 30 °C / 86 °F, low 21 °C / 70 °FNovember: high 26 °C / 79 °F, low 17 °C / 62 °FDecember: high 23 °C / 73 °F, low 13 °C / 56 °F

Precipitation by month

Precipitation per month (mminches)
050100150024JJanuary: 25 mm / 1.0 inFFebruary: 22 mm / 0.9 inMMarch: 30 mm / 1.2 inAApril: 35 mm / 1.4 inMMay: 57 mm / 2.2 inJJune: 79 mm / 3.1 inJJuly: 78 mm / 3.1 inAAugust: 44 mm / 1.7 inSSeptember: 144 mm / 5.7 inOOctober: 63 mm / 2.5 inNNovember: 39 mm / 1.5 inDDecember: 30 mm / 1.2 in1445.7

Heroica Matamoros climate table

Monthly averages, 2001–2025
MonthHigh °C°FLow °C°FMean °C°FPrecip. mmin
Jan227112541762251.0
Feb247514561966220.9
Mar278016612171301.2
Apr308620672577351.4
May328923732781572.2
Jun349325772985793.1
Jul339225782985783.1
Aug349326783086441.7
Sep3290247628831445.7
Oct308621702678632.5
Nov267917622271391.5
Dec237313561865301.2
Year34931254247664525

“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.

Humidity, cloud, sun and daylight
MonthHumid.CloudSolarDaylight
Jan75%64%3.210:41
Feb74%61%3.911:15
Mar72%58%4.811:56
Apr71%56%5.612:44
May71%45%6.213:24
Jun70%36%6.613:45
Jul72%36%6.513:36
Aug70%33%6.313:02
Sep74%45%5.312:16
Oct72%39%4.711:30
Nov73%47%3.610:50
Dec74%62%3.010:32

Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.

What the climate of Heroica Matamoros is like

The warmest month is August, with an average high of 34 °C93 °F and a low of 26 °C78 °F. The coldest is January, when highs average 22 °C71 °F and lows 12 °C54 °F. There is a clear seasonal cycle, with 13 °C23.3 °F between the average temperature of the warmest and the coolest month.

Annual precipitation is moderate at about 645 mm25 in. The wettest three-month stretch is July–September, which brings 41% of the annual total. The wettest month is September (144 mm5.7 in), the driest is February (22 mm0.9 in).

Relative humidity ranges from 70% in June to 75% in January. The clearest skies (lowest average cloud amount, 33%) are typical of August. Average wind speed near the ground ranges from 10 km/h (6 mph) in September to 15 km/h (9 mph) in April. Daylight lasts from about 10.5 hours in December to 13.7 hours in June.

Best time to visit Heroica Matamoros

Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–April: average highs of 22 °C71 °F to 30 °C86 °F with 22 mm0.9 in to 39 mm1.5 in of precipitation per month.

The most challenging month is September, which is hot, with average highs of 32 °C90 °F.

Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.

What to pack for Heroica Matamoros

  • Winter (December–February) — highs 2271 to 24 °C75 °F, lows 1254 to 14 °C56 °F, about 26 mm1.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
  • Spring (March–May) — highs 2780 to 32 °C89 °F, lows 1661 to 23 °C73 °F, about 41 mm1.6 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
  • Summer (June–August) — highs 3392 to 34 °C93 °F, lows 2577 to 26 °C78 °F, about 67 mm2.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
  • Autumn (September–November) — highs 2679 to 32 °C90 °F, lows 1762 to 24 °C76 °F, about 82 mm3.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.

How Heroica Matamoros compares

Compared with Reynosa, about 81 km to the west, Heroica Matamoros has practically the same average temperature and receives 7% more precipitation (645 mm25 in vs 605 mm24 in). The difference is largest in December (1.2 °C2.2 °F warmer).

Of the 96 places in Mexico covered by World Climates, Heroica Matamoros is the 39th warmest by annual mean temperature and the 59th wettest by annual precipitation. See all of them on the Mexico climate page.

Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Corpus Christi (United States, Cfa), Rockhampton (Australia, Cfa) and Xai-Xai (Mozambique, BSh).

The same NASA POWER grid cell also contains Brownsville (pop. 186,738). Their long-term averages in this dataset are essentially the same as for Heroica Matamoros, so they do not have separate pages.

Nearby places

All places in Mexico

Frequently asked questions

What is the warmest month in Heroica Matamoros?

August is the warmest month in Heroica Matamoros, with an average high of 34 °C (93 °F) and an average low of 26 °C (78 °F).

What is the coldest month in Heroica Matamoros?

January is the coldest month, with an average high of 22 °C (71 °F) and an average low of 12 °C (54 °F).

When does it rain the most in Heroica Matamoros?

September is the wettest month with about 144 mm (5.7 in) of precipitation; February is the driest with about 22 mm (0.9 in).

What is the best time to visit Heroica Matamoros?

Judging by long-term averages, the most comfortable months are November–April.

About this data

All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.

Sources and method