In December, Ostroleka typically sees daytime highs of 1.1°C and overnight lows around -4.5°C. Compared to the annual average high of 11.9°C, December runs -10.8°C.
December in Ostroleka averages a daytime high of 1.1°C and an overnight low of -4.5°C.
December runs -10.8°C compared to Ostroleka's annual average high of 11.9°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 1.1°C and cooler evenings around -4.5°C.