In September, Santa Lucia typically sees daytime highs of 25.6°C and overnight lows around 18.7°C. Compared to the annual average high of 21.8°C, September runs +3.8°C.
September in Santa Lucia averages a daytime high of 25.6°C and an overnight low of 18.7°C.
September runs +3.8°C compared to Santa Lucia's annual average high of 21.8°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 25.6°C and cooler evenings around 18.7°C.