Seoul Weather Guide

On paper, Seoul has 4 seasons to enjoy, each offering a different cityscape experience to savour. The reality, though, is one of extremes and unpredictability, no matter what time of the year you visit. When in Seoul, be prepared for anything!

Season and Clothing

Summer: June to August

Summer inspires the release of umbrellas citywide as rainfall starts to lash the roads, dumping up to 383 millimetres on Seoul in July alone. The monsoon cycle brings high temperatures and sticky humidity. Be aware: the seasons of Seoul tend to play opposites - as the air becomes heavy with a clash between humid air and dry troughs, the wind speed can really be something else. Fog, rain, cloud and humidity, summer holidays in Seoul require perfect timing.

Average temperatures: 20 - 28 degrees Celsius.
Appropriate clothing: Short sleeves, thin jumpers, pants and jeans. Shorts aren’t common in South Korea.  
Don't forget: Your umbrella! Invest in a sturdy raincoat too. 

Autumn: September to November

Autumn in Seoul is visually arresting. Standing between 2 completely contrary seasons, September to November is an enjoyable grace period between too much rain and a bracing winter. Other than the occasional wisp of fog and isolated showers, the colours of the trees and the glimmering city will draw you outside to explore the wonders waiting for you.

Average temperatures: 10 -25 degrees Celsius.
Appropriate clothing: Long sleeves, thick jumpers, pants and jeans. Play with layers.
Don't forget: Your camera. A quick memory cannot compete with a colourful snap!  

Winter: December to February

Seoul’s winter is enough to send most natives into hiding, only venturing out to work in thick overcoats and insulated jackets. The wild weather is punctuated by the Siberian Asiatic high causing chilled, dry winds cutting from the northwest. Low pressure troughs sweep Seoul every 5 days, bringing low hanging cloud and drizzling rain. The average winter temperature weighs in at a freezing -4.4 degrees Celsius.

Average temperatures: -17 -5 degrees Celsius.
Appropriate clothing: Coats, scarves, gloves, beanies, thick socks and waterproof shoes.  
Don't forget: Comfortable thermal layers to sleep in and for the day.

Spring: March to May

Nothing compares to the beauty of spring in Seoul. The city comes to life with flowers and street celebrations, shaking off the deep freeze of winter to meet the sun. Enjoy the cherry blossom show as 1,400 beot-kkot trees come to life in a kaleidoscope of colour, covering Yeouido island in pollen and people. Rainy, humid days are rare as average temps stick to a pleasant 13 degrees Celsius; perfect for a visit to the Hampyeong Butterfly Festival!

Average temperatures: 5 - 18 degrees Celsius.
Appropriate clothing: Long sleeves, sunglasses, jeans and comfortable shoes.
Don't forget:  If you’re visiting temples, don’t wear anything that shows a lot of skin – they may not permit you to enter.