In September, Matamoros typically sees daytime highs of 32.1°C and overnight lows around 17.7°C. Compared to the annual average high of 29.4°C, September runs +2.7°C.
September in Matamoros averages a daytime high of 32.1°C and an overnight low of 17.7°C.
September runs +2.7°C compared to Matamoros's annual average high of 29.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 32.1°C and cooler evenings around 17.7°C.