In September, Santa Tecla typically sees daytime highs of 28.1°C and overnight lows around 19.9°C. Compared to the annual average high of 29.2°C, September runs -1.2°C.
September in Santa Tecla averages a daytime high of 28.1°C and an overnight low of 19.9°C.
September runs -1.2°C compared to Santa Tecla's annual average high of 29.2°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 28.1°C and cooler evenings around 19.9°C.