Size : The National Park covers an area of 739 km2 and thanks to two other protected areas (Klong Saers and Khlong Nakha) next to Khao Sok the actual protected area measures almost 4000 km2.

Climate :  Khao Sok is the wettest area in all of Thailand, because it is situated at the mountain ridge separating the west coast from the east coast. Winds from both Thailand’s gulf in the east and from the Andaman Sea in the west blow monsoon rain into the area. It can rain as much as 3500 mm (3,5 m) in one year.  Late December to early February is the driest period with just a little or no rainfall.

Mosquito : There is no need to worry about malaria, because the disease was been eradicated from this area a long time ago. Even so, we recommend that you bring a mosquito repellent when you visit Khao Sok, because the mosquito can sometimes be a bit annoying, especially in the evening and after rain.

Geography : The dominant forest is lowland rainforest. The rainforest in Southeast Asia is 160 million years old, which makes it the oldest rainforest on earth.

Khao Sok is well known for its limestone mountains. The highest limestone peak is 960 m, but the normal height is 400-600 m.

The National Park consist of:

• 40 % foothill rainforest
• 27 % rainforest plants
• 15 % limestone crag vegetation
• 15 % lowland scrub
• 3 % rainforest at 600-1000 m

There are approximately 200 different floral spices per hectare.