In June, Osan typically sees daytime highs of 26.6°C and overnight lows around 16.2°C. Compared to the annual average high of 16.5°C, June runs +10.0°C.
June in Osan averages a daytime high of 26.6°C and an overnight low of 16.2°C.
June runs +10.0°C compared to Osan's annual average high of 16.5°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 26.6°C and cooler evenings around 16.2°C.