What to Wear in Seoul in October

Wear autumn layers in October: a t-shirt or thermal long-sleeve base, a knit sweater or fleece mid-layer, and a medium-weight wool-blend coat or structured jacket. The 66°F daytime high is comfortable in just the sweater on a sunny afternoon in Gyeongbokgung Palace, but evenings near Bukhansan trailheads and the Han River cool to 50°F and below, requiring the coat. Comfortable ankle boots or clean sneakers handle the mostly dry conditions.

October is one of Seoul's finest months for visitors — Bukhansan's autumn foliage peaks in mid-to-late October, the palace complexes are at their most photogenic, and temperatures are ideal for full-day outdoor sightseeing without heat or rain concerns. The Seoul Lantern Festival occasionally falls in late October, illuminating Cheonggyecheon Stream in spectacular fashion. Book accommodations early as October is peak domestic and international tourism season.

Leather ankle boots, suede loafers, or clean sneakers are all appropriate for October's mostly dry conditions. Bukhansan hiking requires trail runners or hiking boots as the rocky granite terrain demands grip and ankle support — particularly on descent. For urban exploration in Insadong, Hongdae, and Gangnam, stylish leather footwear fits the autumn aesthetic while handling Seoul's varied cobblestone and tile surfaces.

October averages a high of 66°F (19°C) and a low of 50°F (10°C). The temperature range creates a classic 'crisp autumn' feel — warm enough in the afternoon sun on Bukhansan's south-facing slopes to remove a layer, cool enough in the shade and evening to require a proper coat. About 7 rain days occur, typically brief showers rather than extended rain events. October is arguably Seoul's best month for outdoor sightseeing.

Pack a medium-weight coat (wool blend or structured jacket), 2–3 knit sweaters or thermal long-sleeves, slim trousers or dark jeans, and ankle boots or clean sneakers. A compact umbrella handles the occasional shower. Bring one light thermal layer for cold evening Han River walks or Bukhansan's higher elevations. Layers that mix and match easily help navigate Seoul's varied October temperature range without over-packing.