South Korea
1 city
TTDI covers Seoul for South Korea. Every city page answers the canonical traveler questions (best time to visit, daily costs, where to stay) composed from the TTDI database.
April is the ideal-band month across TTDI's covered South Korea cities (TTDI Best-Months Heat Map 2026). Full heat map →
TTDI covers South Korea through 1 launched city. Seoul holds all 44 published guides and answers, the only entry point for the country right now. Every measured record TTDI holds for South Korea lives in those 44 Seoul pages.
Seoul is where you start, and the measured climate data frames the timing question. The average high reaches 30°C in July, when 18 rain days in Seoul bring sticky, persistent moisture. That said, January averages 2°C with 4 rain days, and the air tends toward sharp, dry cold. Those 44 Seoul pages cover both extremes.
July's 18 rain days in Seoul likely mean warm drizzle more days than not. January's 4 rain days and 2°C average high suggest clear, biting mornings.
Seoul's measured climate spread runs from 2°C with 4 rain days in January to 30°C with 18 rain days in July.
