In August, Joensuu typically sees daytime highs of 18.6°C and overnight lows around 10.5°C. Compared to the annual average high of 5.9°C, August runs +12.7°C.
August in Joensuu averages a daytime high of 18.6°C and an overnight low of 10.5°C.
August runs +12.7°C compared to Joensuu's annual average high of 5.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 18.6°C and cooler evenings around 10.5°C.