Surat Thani celebrates the official end of the annual 3-month Buddhist Rains Retreat (Ok Phansa) in mid-October with the Chak Phra Festival (literally 'the procession of hauling the Buddha image'). The tradition stems from the belief that the Buddha ascended to Heaven during Phansa to preach to his mother. The festival marks the Buddha's return to Earth, and is an occasion for religious merit-making and general celebrations. Local people organise dazzling land and waterborne processions of revered Buddha images (to symbolise the Buddha's return to Earth) and boat races on the Tapi River where long boats, manned by up to 50 oarsmen, are ebulliently raced. Religious devotion, spectacle and merriment combine to make Surat Thani's Chak Phra Festival a memorable annual event.

The annual August fair celebrates the delicious fruit, first planted in Surat Thani during 1926. Highlights include floats adorned with rambutans and other fruits, exhibitions of local products and ornamental plants, and demonstrations by specially trained monkeys who harvest coconuts.