In December, Santa Lucia typically sees daytime highs of 18.4°C and overnight lows around 12.7°C. Compared to the annual average high of 21.8°C, December runs -3.4°C.
December in Santa Lucia averages a daytime high of 18.4°C and an overnight low of 12.7°C.
December runs -3.4°C compared to Santa Lucia's annual average high of 21.8°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 18.4°C and cooler evenings around 12.7°C.