In May, Bilbao typically sees daytime highs of 18.1°C and overnight lows around 10.4°C. Compared to the annual average high of 17.0°C, May runs +1.1°C.
May in Bilbao averages a daytime high of 18.1°C and an overnight low of 10.4°C.
May runs +1.1°C compared to Bilbao's annual average high of 17.0°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 18.1°C and cooler evenings around 10.4°C.