April–May and September–November are the best times to visit Korea. Spring brings cherry blossoms and mild weather; autumn offers crisp air and spectacular foliage. Summer (July–August) is hot, humid and rainy; winter is cold but cheap, uncrowded and great for skiing.
For cherry blossoms aim for late March (south) to mid-April (Seoul). For autumn colors, mid-October through early November is peak. Avoid the jangma monsoon weeks of July if you can.
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