Layover guideSeoul · ICN · GMP

Weather in Seoul

January in Seoul runs between minus 5.5 and 2.1 degrees, August between 22.9 and 30, and the rain arrives in one concentrated month.

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All of Seoul

Seoul's published range is a January high of 2.1C against a low of minus 5.5C, and an August high of 30C against a low of 22.9C. Winter averages sit at 0 to 1C and frequently drop below zero, driven by the northerly wind off Siberia.

The rainy season runs from the end of June to the end of July. That is one month carrying a disproportionate share of the year's rain, not a scattered wet season.

June to October also brings several typhoons, which is the window where a Seoul layover is most likely to be disrupted by weather rather than merely made unpleasant by it.

Four seasons are clearly divided: spring March to May, summer June to August, autumn September to November, winter December to February. Pack for the season you are landing in, not for an average.

Korea Tourism Organization: Climate · checked 2026-09-03

The rest of Seoul

The whole guide

Getting out of the airportExpress train, 43 minutes from Terminal 1 and 51 from Terminal 2. The last express back leaves Seoul Station at 23:00, and the last airport-bound all-stop at 23:40.Ride-hailingMetered taxis from numbered ranks outside arrivals, with surcharges that are published rather than negotiated.Local laws that catch crew outCannabis sits with opium and cocaine on the restricted list, food is a quarantine matter, and cash over ten thousand dollars is declarable in both directions.Staying connectedRoaming centres at Incheon and Gimpo sell SIMs and rent Wi-Fi eggs, convenience stores sell SIMs too, and free public Wi-Fi is widespread.Eating near the crew hotelsWater and side-dish refills are free, every table has a call button, and tips are not expected.What to buyDuty-free bought inside Korea counts against your 800 dollar allowance, and the VAT refund starts at a kiosk before you check your bags.TippingTaxis do not require a tip, and the extras on the meter are published percentages rather than anything discretionary.