Weather in South Korea in October

Thanks to cool but comfortable temperatures and relatively low rainfall, the weather in South Korea in October showcases the best of the fall climate. Temperatures range from 50°F to 70°F (10°C to 21°C) and it pays to pack an extra layer and a jacket as the evenings are cool, especially for higher elevations or evening outings. Vibrant fall foliage sweeps through national parks, city streets and countryside landscapes. Conditions are dry and clear, with excellent visibility for hikes, photography and city walks. Seoul and Gyeongju are particularly beautiful at this time of year, drawing in travelers as a result, with numbers further boosted by the fact October is one of the most popular months for outdoor festivals and cultural events. Overall, October delivers Korea’s most iconic seasonal scenery.

South Korea in October at a glance

The weather in South Korea in October is widely considered one of the best times to visit this fascinating country. The climate is crisp, clear and cool, while fall foliage and comfortable conditions make it a favorite among travelers.

• Average temperatures in Seoul range from 50°F to 70°F (10°C to 21°C), with cooler evenings. Southern regions like Busan remain slightly warmer, around 55°F to 75°F (13°C to 24°C).
• Fall colors peak in late October, especially in the national parks of Seoraksan and Naejangsan, attracting hikers and nature lovers.
• Clear blue skies and low humidity create ideal conditions for sightseeing, photography and outdoor festivals throughout the country.
• October is a high-demand month for travel. As a result, accommodations in popular destinations can be fully booked and prices higher, especially over weekends.
• Tourist crowds grow during peak foliage weeks, especially in natural areas, but the energy and beauty make it well worth the visit.

Is October a good time to visit South Korea?

South Korea in October is one of the most popular and picturesque times to visit. And it’s no wonder. Thanks to clear skies, crisp air and colorful foliage, the full fall beauty of this scenic country is showcased beautifully. 

Temperatures are pleasant, too. In Seoul, temperatures range from 50°F to 70°F (10°C to 21°C), while southern regions stay slightly warmer.

The weather is also dry and comfortable, perfect for hiking in national parks, visiting temples and exploring cities on foot. Fall foliage peaks in late October, especially in mountainous areas like Seoraksan and Naejangsan, drawing both domestic and international travelers to witness what is known as the ‘Golden Season’.

October is also a festival-heavy month, with cultural events, food markets and outdoor performances happening nationwide. While weekends can be busy in nature destinations, overall tourist crowds are manageable and accommodations are widely available — though early reservation is recommended for foliage hot spots. If you're mapping out a South Korea itinerary focused on natural beauty and seasonal festivals, October is hard to beat.

Thanks to the balance of ideal temperatures, striking landscapes and cultural vibrancy, October is arguably the best time to visit South Korea.

Average daily temperatures in October

South Korea in October offers travelers crisp air, loads of eye-catching foliage and some of the year’s most pleasant weather. 

In Seoul, average highs hover around the 70°F (21°C) mark, while lows fall to a chilly 50°F (10°C) that makes packing a warm layer necessary. The humidity is low and skies are generally clear, creating ideal conditions for exploring outdoors.

In the central regions, including Daejeon and Gyeongju, temperatures are similar, with highs around 72°F (22°C) and lows near 52°F (11°C). It’s unsurprising, therefore, that October is a popular month for hiking, thanks to the comfortable weather and vibrant fall colors that start appearing mid-month.

Southern coastal areas, including Busan and Mokpo, stay slightly warmer, averaging 73°F (23°C) during the day and 59°F (15°C) at night. Jeju Island also enjoys mild temperatures, ranging from 60°F to 73°F (16°C to 23°C), perfect for scenic drives and beach walks.

Mountain regions are noticeably cooler. Highs in places like Seoraksan are around 61°F (16°C), with chilly mornings and evenings.

With its comfortable temperatures and golden foliage, October is one of the most picturesque and enjoyable months to experience South Korea, especially for nature lovers and photographers.

What about the crowds and cost?

October is one of the most popular months to visit South Korea. The country’s famed fall foliage draws local and international travelers to mountain trails and national parks, especially during peak color weeks in mid to late October.

Prices for accommodations in scenic areas like Seoraksan and Naejangsan rise sharply, meaning availability can be limited for weekend reservations. Urban hotels are also busier but still manageable with a little bit of advance planning. If you’re planning a trip to South Korea during this season, it’s smart to book early — especially if fall colors and outdoor festivals are on your list.

While crowds grow at nature spots and festivals, the crisp weather and stunning landscapes make October’s higher costs and increased foot traffic a worthy trade-off for many visitors.

Things to do in South Korea in October

October is one of the most scenic months in South Korea. Clear skies, cool air and vibrant fall foliage create the perfect backdrop for outdoor activities, cultural day trips and peaceful escapes into nature — especially across some of the best places to visit in South Korea during the fall season.

Hike among fall colors in national parks

Seoraksan, Naejangsan and Jirisan turn vibrant with red, orange and yellow foliage, with the colors leading to what locals call ‘Golden Season’. Trails are well-marked and cool temperatures make hiking ideal. Visit mid to late October for peak color and the most dramatic views.

Take a temple stay in the mountains

October’s calm, crisp weather makes it a beautiful time for an overnight temple stay, especially in mountain settings where fall leaves frame quiet courtyards and forest paths. Temples such as Haeinsa and Woljeongsa offer a slower rhythm through meditation, tea ceremonies, traditional meals, and time away from busier travel days.

For 9-day South Korea trips, a temple stay can add a reflective cultural pause between cities, hikes, and historic sights, giving the route a deeper sense of place.

Cruise through fall scenery

River cruises on the Han River in Seoul or the Nakdong River in Andong offer a unique view of the changing landscape. These relaxing rides are especially beautiful during golden hour in early evening — one of the most scenic things to do in South Korea in fall.

Visit historic sites in the countryside

Gyeongju’s cultural treasures — like Bulguksa Temple and Daereungwon Tombs—are stunning under fall skies. Fewer bugs, cooler air and clear weather make October ideal for long walks through Korea’s ancient capital.

Enjoy mountain cable cars and skywalks

Cable cars in Tongyeong, Daedunsan and Odaesan elevator you above colorful forests. Many locations also feature skywalks and observation decks for panoramic views of fall foliage and rugged terrain.

Festivals and events in South Korea in October

October is peak festival season, with crisp air, colorful landscapes and numerous events celebrating culture, food and nature.

• Jinju Namgang Yudeung Festival: Thousands of handmade lanterns float along the Nam River in Jinju, creating a dazzling nighttime scene. The history-themed installations and water shows add to festivities. Have your camera at the ready.
• Suwon Hwaseong Cultural Festival: Set around a UNESCO World Heritage site that is worth visiting anyway, this festival includes historical reenactments, parades, fireworks and martial arts displays.
• Busan International Film Festival (BIFF): Asia’s leading film event, held in the Haeundae district, attracts actors, directors and film lovers from around the world.
• Cheongju Craft Biennale: Showcasing contemporary crafts and design, this large-scale exhibition features international artists and innovative works across various mediums. It’s a great place to pick up a unique memento to take home.
• Seoul Kimchi Making Event: Learn Korea’s signature food tradition during large-scale community gatherings that teach you how to make and store gut-friendly kimchi ahead of winter. It’s a surprisingly captivating event.