In December, Santa Maria typically sees daytime highs of 29.0°C and overnight lows around 17.5°C. Compared to the annual average high of 24.1°C, December runs +5.0°C.
December in Santa Maria averages a daytime high of 29.0°C and an overnight low of 17.5°C.
December runs +5.0°C compared to Santa Maria's annual average high of 24.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 29.0°C and cooler evenings around 17.5°C.