In June, Helsinki typically sees daytime highs of 17.7°C and overnight lows around 10.2°C. Compared to the annual average high of 7.7°C, June runs +10.0°C.
June in Helsinki averages a daytime high of 17.7°C and an overnight low of 10.2°C.
June runs +10.0°C compared to Helsinki's annual average high of 7.7°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 17.7°C and cooler evenings around 10.2°C.