In December, Oulu typically sees daytime highs of -4.1°C and overnight lows around -10.9°C. Compared to the annual average high of 5.3°C, December runs -9.4°C.
December in Oulu averages a daytime high of -4.1°C and an overnight low of -10.9°C.
December runs -9.4°C compared to Oulu's annual average high of 5.3°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -4.1°C and cooler evenings around -10.9°C.