The lengthy rainy season experienced by most parts of the region sees rivers swell to the delight of rafters and kayakers. The rapids here rank from grade 1 to 5, meaning there is suitable floating for beginners as well as appropriate white-knuckle whitewater for die-hards.

The kayaking is Southeast Asia is a highlight for many, with sea kayaking a popular way to tour the islands. Vietnam’s majestic Ha Long Bay, a UNESCO World Heritage site featuring hundreds of karst mountains, is a favorite place for this activity, as is Thailand’s scenic Pha Nga bay.

Padas river - Borneo, Malaysia: The rapids here are considered the best in the region by many, with two-meter high waves and grade 4 whitewater on offer. Accessible by train only, the Padas can be visited before or after an excursion to the nearby Kota Kinabalu National Park.

Wa river, Thailand: Boasting grade 3 to 5 rapids, the Wa River in Nan province can be enjoyed independently by experienced rafters of on an organized trip in a group. Outfitters in Chiang Mai can provide the know-how.

Sadan river - Sulawesi, Indonesia: Less dangerous than some of Indonesia’s other rivers, the Sadan features grade 3 to 4 rapids that are best enjoyed on a multi-day raft trip that includes camping. The best rafting conditions are from November to March.

Ayung river - Bali, Indonesia: This exciting river has lots to offers kayakers and rafters alike with its pretty waterfalls, deep canyons, impressive gorges and rainforest wildlife. The rapids here are suitable for beginners and intermediates.

Maykha river, Burma: The snowy peaks in Burma’s Kachin state feed this river, creating some of the country’s best whitewater. Best enjoyed on an organized trip, the river offers less challenging rides the farther you go from its source.

Ha Long bay, Vietnam: Many of the organized boat trips to this World Heritage site include kayaking among the imposing karst mountains. Suitable for all levels, even those with no experience, kayaking here is a magical experience.

Mae Tang river, Thailand: The most popular river to raft from Thailand’s northern capital, Chiang Mai, the Mae Tang river is best tackled after the wet season when rapids reach grade 4. A number of professional tours along the river are available.

Pai, Thailand: Offering relaxed rafting adventures, Mae Hong Son’s bohemian town of Pai features a river that makes for fun adventures. Organized trips typically include bamboo rafting and elephant riding as part of the package.

Nam Ha, Laos: The kayaking and rafting scenes here are low-key compared to those in neighboring Thailand, but the unspoiled scenery of the Nam Ha makes it an attractive rafting hotspot. The whitewater here is gentle, and the river offers plenty of lazy floating.

Pha Nga bay, Thailand: A favorite place among kayakers, Pha Nga bay’s outstanding scenery makes it a hotspot for daytrips from Phuket. Organized tours depart from Krabi or Phuket and are a good way to take in the karst scenery.