Ilsan Lake Park cherry blossoms bloom in early April. The annual Goyang International Flower Festival runs April-May at the Flower Exhibition Center — one of Korea's largest flower shows.

Hot and humid like Seoul. Ilsan Lake Park fountain shows provide relief. Indoor KINTEX events and Aqua Planet Ilsan are great rainy-day options.

Comfortable weather for exploring Haengjusanseong Fortress. Fall foliage at Ilsan Lake Park peaks in late October. Concert season at Goyang Stadium.

Cold and dry — slightly colder than central Seoul due to open terrain. Layer up for outdoor events. KINTEX hosts major indoor conventions year-round.