Seoul vs Jeju

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.

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

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

Seoul reaches an average high of 19°C (66°F) and drops to 9°C (48°F) at night during October. The daily temperature range is 10°C, meaning moderate variation throughout the day.

Jeju averages 20°C (68°F) for the high and 17°C (63°F) for the low, with a daily range of 3°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.

Seoul receives approximately 54 mm of rainfall across 5 rain days during October. Rain is occasional, so a light rain jacket should suffice.

Jeju sees 92 mm over 7 rain days. That makes Seoul the drier option by 2 rain days and 38 mm of total precipitation.

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