Spring (March-May): Peak season. Perfect weather with cherry blossoms (late March-early April) and azaleas. Temperatures 10-20°C (50-68°F). Parks and palaces are stunning. Book accommodations early as this is the most popular time.
Summer (June-August): Hot and humid with monsoon season (late June-July). Temperatures 23-30°C (73-86°F) with high humidity. Advantages: fewer tourists, indoor attractions ideal, summer festivals, and night markets. Pack light clothes, umbrella, and prepare for air-conditioned interiors.
Autumn (September-November): Second peak season. Comfortable temperatures 10-23°C (50-73°F) with spectacular fall foliage (mid-October-early November). Clear skies perfect for mountain hiking and outdoor activities. Many festivals including Seoul Lantern Festival. Excellent time to visit.
Winter (December-February): Cold with temperatures -6 to 5°C (21-41°F). Snow creates beautiful scenery, fewer crowds, and great deals on accommodation. Ice skating, winter festivals, and cozy cafes. Indoor attractions like museums, shopping, and jjimjilbang perfect for cold days. Pack heavy winter clothing.
| Season | Temperature | Pros | Cons |
|---|---|---|---|
| Spring | 10-20°C | Cherry blossoms, ideal weather | Crowded, higher prices |
| Summer | 23-30°C | Festivals, fewer tourists | Hot, humid, rain |
| Autumn | 10-23°C | Foliage, clear skies | Popular, book early |
| Winter | -6 to 5°C | Low prices, snow scenery | Very cold, short days |
Insider Tip: Late October-early November offers the best combination of beautiful weather, autumn colors, and manageable crowds.