In May, Rijeka typically sees daytime highs of 19.8°C and overnight lows around 9.0°C. Compared to the annual average high of 16.0°C, May runs +3.9°C.
May in Rijeka averages a daytime high of 19.8°C and an overnight low of 9.0°C.
May runs +3.9°C compared to Rijeka's annual average high of 16.0°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 19.8°C and cooler evenings around 9.0°C.