Central Vietnam links Hue's Imperial Citadel, Hoi An's UNESCO lantern-lit old town, the My Son Cham ruins, and Da Nang's marble mountains and curved Dragon Bridge over the Han River.
Dry warm season with Hoi An at peak photographic conditions, My Son ruins accessible without afternoon storms, and the Da Nang International Fireworks Festival in late June aside.
Hot dry season with Da Nang and Hoi An hitting 35°C, but China Beach swimming pleasant and lantern-lit Hoi An evenings cooling 5°C after sunset.
Wet season with afternoon storms and typhoon risk peaking October-November, but Hoi An lantern festival on the 14th of every lunar month draws crowds.
Tet Vietnamese New Year (late January-February) brings family celebrations, peach blossoms decorate Hue's Imperial Citadel, and Hoi An lanterns at peak.