In December, Lappeenranta typically sees daytime highs of -3.4°C and overnight lows around -8.7°C. Compared to the annual average high of 7.0°C, December runs -10.3°C.
December in Lappeenranta averages a daytime high of -3.4°C and an overnight low of -8.7°C.
December runs -10.3°C compared to Lappeenranta's annual average high of 7.0°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -3.4°C and cooler evenings around -8.7°C.