In December, Vaasa typically sees daytime highs of -1.8°C and overnight lows around -7.0°C. Compared to the annual average high of 7.0°C, December runs -8.8°C.
December in Vaasa averages a daytime high of -1.8°C and an overnight low of -7.0°C.
December runs -8.8°C compared to Vaasa's annual average high of 7.0°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -1.8°C and cooler evenings around -7.0°C.