In December, Santa Tecla typically sees daytime highs of 29.1°C and overnight lows around 17.9°C. Compared to the annual average high of 29.2°C, December runs -0.1°C.
December in Santa Tecla averages a daytime high of 29.1°C and an overnight low of 17.9°C.
December runs -0.1°C compared to Santa Tecla's annual average high of 29.2°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 29.1°C and cooler evenings around 17.9°C.