Jeju vs Seoul

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Seoul edges ahead as the better destination in October. Seoul offers 9 hours of daily sunshine with only 5 rain days, while Jeju sees 9 sunshine hours and 7 rain days.

Jeju sits in the comfortable travel range at 20°C. Seoul is also comfortable at 19°C.

For travelers who prioritize dry weather, Seoul is the stronger choice in October.

Jeju reaches an average high of 20°C (68°F) and drops to 17°C (63°F) at night during October. The daily temperature range is 3°C, meaning relatively stable temperatures from day to night.

Seoul averages 19°C (66°F) for the high and 9°C (48°F) for the low, with a daily range of 10°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in October.

Jeju receives approximately 92 mm of rainfall across 7 rain days during October. Rain is occasional, so a light rain jacket should suffice.

Seoul sees 54 mm over 5 rain days. That makes Seoul the drier option by 2 rain days and 38 mm of total precipitation.

Humidity also differs: Jeju averages 70% while Seoul sits at 65%. Jeju will feel muggier, especially at higher temperatures.