In May, Santander typically sees daytime highs of 18.1°C and overnight lows around 9.8°C. Compared to the annual average high of 16.8°C, May runs +1.3°C.
May in Santander averages a daytime high of 18.1°C and an overnight low of 9.8°C.
May runs +1.3°C compared to Santander's annual average high of 16.8°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 18.1°C and cooler evenings around 9.8°C.