In December, Santiago de Compostela typically sees daytime highs of 11.3°C and overnight lows around 4.1°C. Compared to the annual average high of 17.4°C, December runs -6.1°C.
December in Santiago de Compostela averages a daytime high of 11.3°C and an overnight low of 4.1°C.
December runs -6.1°C compared to Santiago de Compostela's annual average high of 17.4°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 11.3°C and cooler evenings around 4.1°C.