In August, Vaasa typically sees daytime highs of 18.6°C and overnight lows around 10.5°C. Compared to the annual average high of 7.0°C, August runs +11.6°C.
August in Vaasa averages a daytime high of 18.6°C and an overnight low of 10.5°C.
August runs +11.6°C compared to Vaasa's annual average high of 7.0°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 18.6°C and cooler evenings around 10.5°C.