In May, Oulu typically sees daytime highs of 10.0°C and overnight lows around 1.1°C. Compared to the annual average high of 5.3°C, May runs +4.6°C.
May in Oulu averages a daytime high of 10.0°C and an overnight low of 1.1°C.
May runs +4.6°C compared to Oulu's annual average high of 5.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 10.0°C and cooler evenings around 1.1°C.