In May, Lahti typically sees daytime highs of 14.9°C and overnight lows around 2.9°C. Compared to the annual average high of 7.8°C, May runs +7.1°C.
May in Lahti averages a daytime high of 14.9°C and an overnight low of 2.9°C.
May runs +7.1°C compared to Lahti's annual average high of 7.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 14.9°C and cooler evenings around 2.9°C.