In December, Santa Barbara typically sees daytime highs of 18.5°C and overnight lows around 5.7°C. Compared to the annual average high of 22.0°C, December runs -3.5°C.
December in Santa Barbara averages a daytime high of 18.5°C and an overnight low of 5.7°C.
December runs -3.5°C compared to Santa Barbara's annual average high of 22.0°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 18.5°C and cooler evenings around 5.7°C.