In May, Santiago de Compostela typically sees daytime highs of 18.8°C and overnight lows around 8.5°C. Compared to the annual average high of 17.4°C, May runs +1.3°C.
May in Santiago de Compostela averages a daytime high of 18.8°C and an overnight low of 8.5°C.
May runs +1.3°C compared to Santiago de Compostela's annual average high of 17.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.8°C and cooler evenings around 8.5°C.