Namtok Sai Rung (Rainbow Waterfall) is the most immediately accessible waterfall to Khao Lak and is situated just north of Bang Niang. It is a charming and refreshingly cool spot to spend time, particularly with a picnic. The fall is located close to the car park, making access easy for the physically challenged or those short on time.
Sai Rung waterfall or Pakwib waterfall or Rainbow waterfall is located in Khao Lak, Phang Nga. This was a great waterfall to hike, relatively easy as well. The waterfall is seven levels high but you can only access one.
Close to Pakwib beach at marker 70 – 71 km on highway 4. Almost opposite the turning to Pakwib Beach, head east inland towards Tambon Bang Sai and make a right turn after about 1 km. Follow the cement road for 1.8 km and then walk 30 meters to the waterfall. (It is about 3 km from route 4). The fall of the water is about 60 m. There is good swimming area but use caution.
Namtok Sai Rung (Rainbow Waterfall)
Location: Khuekkhak, Takua Pa District, Phang Nga 82190 Thailand