DMZ in January

April through May offers perfect weather and clear skies for those long-distance views into North Korea. September and October bring similar conditions without the spring crowds. Summer gets hot and hazy, limiting visibility across the border. Winter tours still run, but fog and snow can cancel outdoor portions. Here's what tour operators won't tell you – weekdays are significantly less crowded than weekends. Tuesday and Wednesday tours often have half the people, meaning better photo opportunities and more time at each stop. Book at least a week ahead during peak season, but last-minute spots sometimes open up due to cancellations.