In December, San Sebastian de los Reyes typically sees daytime highs of 9.4°C and overnight lows around 0.9°C. Compared to the annual average high of 18.9°C, December runs -9.5°C.
December in San Sebastian de los Reyes averages a daytime high of 9.4°C and an overnight low of 0.9°C.
December runs -9.5°C compared to San Sebastian de los Reyes's annual average high of 18.9°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 9.4°C and cooler evenings around 0.9°C.