In December, Joensuu typically sees daytime highs of -4.6°C and overnight lows around -10.5°C. Compared to the annual average high of 5.9°C, December runs -10.5°C.
December in Joensuu averages a daytime high of -4.6°C and an overnight low of -10.5°C.
December runs -10.5°C compared to Joensuu's annual average high of 5.9°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -4.6°C and cooler evenings around -10.5°C.