Climate averages 1991–2020
Heroica Matamoros weather
in May.
A hot, moderately wet month: the 5th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Heroica Matamoros: daytime highs average 30.1°C and nights cool to about 23.6°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 45 mm of rain on roughly 7 days, which makes May a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 24 min on an average May day.
The nearest other city in this atlas is Ciudad Río Bravo (60 km away). In May its highs average 32.7°C, 2.6°C warmer than Heroica Matamoros, with 47 mm of rain.
Among the 153 cities listed in Mexico, Heroica Matamoros ranks joint 81st of 153 for the warmest May highs and joint 76th of 153 for the driest May (rainfall, lowest first). The mean May high of those 153 cities is 29.6°C; Heroica Matamoros is 0.4°C warmer than that mean.
From May to June, average highs rise by 1.8°C to 31.8°C, and monthly rainfall rises from 45 mm to 58 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Heroica Matamoros climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.0°C13.7°C | 13.7°C | 32 | 5.7 | 10.711 h |
| February | 22.7°C15.4°C | 15.4°C | 27 | 5.3 | 11.311 h |
| March | 24.9°C17.7°C | 17.7°C | 38 | 5.6 | 12.012 h |
| April | 27.6°C20.6°C | 20.6°C | 47 | 5.9 | 12.813 h |
| May, selected | 30.1°C23.6°C | 23.6°C | 45 | 7.0 | 13.413 h |
| June | 31.8°C25.6°C | 25.6°C | 58 | 10.3 | 13.714 h |
| July | 32.4°C26.0°C | 26.0°C | 64 | 8.8 | 13.614 h |
| August | 32.7°C26.1°C | 26.1°C | 52 | 10.3 | 13.013 h |
| September | 30.6°C24.5°C | 24.5°C | 108 | 15.6 | 12.312 h |
| October | 28.4°C21.8°C | 21.8°C | 72 | 9.3 | 11.612 h |
| November | 24.8°C17.9°C | 17.9°C | 43 | 7.6 | 10.911 h |
| December | 22.0°C14.8°C | 14.8°C | 34 | 5.9 | 10.611 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Ciudad Río Bravo in MayMexico · 60 kmHigh 32.7°C · Low 23.2°C · 47 mm rain
- Edinburg in MayUnited States · 81 kmHigh 33.0°C · Low 23.1°C · 55 mm rain
- McAllen in MayUnited States · 81 kmHigh 33.0°C · Low 23.1°C · 55 mm rain
- Reynosa in MayMexico · 81 kmHigh 33.2°C · Low 23.2°C · 49 mm rain
- Mission in MayUnited States · 90 kmHigh 33.2°C · Low 23.0°C · 55 mm rain
- Corpus Christi in MayUnited States · 214 kmHigh 29.4°C · Low 22.5°C · 71 mm rain
- Linares in MayMexico · 236 kmHigh 31.7°C · Low 20.2°C · 65 mm rain
- Ciudad Benito Juárez in MayMexico · 260 kmHigh 30.6°C · Low 19.7°C · 51 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Heroica Matamoros) is explained once on the Heroica Matamoros year overview and on the Sources, method and limits page.