Yes, it's a good idea to consider the weather when planning your event in Seoul. The city experiences four seasons: hot, humid summers and cold, snowy winters. Summer (June to August) can also bring heavy rainfall during the monsoon season, so if you're hosting an outdoor event, it's best to have a backup indoor option. Spring (April to June) and autumn (September to November) offer the most pleasant weather, with mild temperatures and clear skies, making them ideal for events. While winter and summer events can still be successful, planning around the weather is key to ensuring everything runs smoothly!