In May, Piraeus typically sees daytime highs of 24.8°C and overnight lows around 14.7°C. Compared to the annual average high of 22.0°C, May runs +2.8°C.
May in Piraeus averages a daytime high of 24.8°C and an overnight low of 14.7°C.
May runs +2.8°C compared to Piraeus's annual average high of 22.0°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 24.8°C and cooler evenings around 14.7°C.