In May, Santa Tecla typically sees daytime highs of 29.6°C and overnight lows around 20.5°C. Compared to the annual average high of 29.2°C, May runs +0.4°C.
May in Santa Tecla averages a daytime high of 29.6°C and an overnight low of 20.5°C.
May runs +0.4°C compared to Santa Tecla's annual average high of 29.2°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 29.6°C and cooler evenings around 20.5°C.