Weather: Jeju Island — October

October is typically excellent for visiting Jeju Island, with average highs of 22°C and around 7 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.

Evenings in Jeju Island during October are mild at 18°C. A light cardigan or long sleeves for evenings is usually enough. Outdoor dining remains comfortable, making it a great time to enjoy rooftop bars and terrace restaurants.

With highs of 22°C and lows of 18°C in October, we recommend: Compact umbrella, Sunscreen SPF 30+, Sunglasses, Comfortable walking shoes. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.

Jeju Island typically sees around 7 rainy days in October. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.

October is suitable for swimming in Jeju Island, though the water may feel refreshing at first. Air temperatures average 22°C, and most swimmers find it enjoyable once they're in. Midday is usually the warmest time for a dip.

In October, Jeju Island gets approximately 11.4 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.

Yes, October is peak season in Jeju Island. Expect higher prices for accommodation and more crowds at popular attractions, but also the best weather conditions. Book hotels and major attractions in advance to secure availability and better rates.