In June, Olsztyn typically sees daytime highs of 21.4°C and overnight lows around 9.6°C. Compared to the annual average high of 11.0°C, June runs +10.4°C.
June in Olsztyn averages a daytime high of 21.4°C and an overnight low of 9.6°C.
June runs +10.4°C compared to Olsztyn's annual average high of 11.0°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 21.4°C and cooler evenings around 9.6°C.