Nudity in Thailand is forbidden! But there are many qiet places to do it! On every small island, you can find a place to enjoy naked swimming and sunbathing. Some examples where are sometimes people nude:
1. On the freedom beach near Patong. There is a small (15 meters) sandy beach on the left of freedom beach. It's a good place for nudity.
2. Near the Naithon Beach is a small public beach with one restaurant. The owners there accept when you stay nude on the chair and swim nude. Please not in the restaurant!
Ko Pha Ngan
1. Ao Hin Lor is a long nice rock and sandy beach where start in Booms Cafe Bungalows until Blue Hill Resort. There are many paradise nice places for enjoy nudity.
2. Another very good and nice place is near the Wak Thum Beach . When you drive from Thong Sala the way to Wak Thum, after a small viewpoint restaurant you will see a big place without any building on the left. One the end of this place is a small path for go down to the beach, then you see a nice beach.
3. A small but nice beach is near Bovy Resort (Pirates Bar). But the watertide on this beaches goes down in the afternoon. Best time is morning and early afternoon.
Ko Tao
A very small nice beach is near freedom beach. On a small path you can walk from Taa Too to there.
Notice:
1. On the weekend, Thai people come to these beaches, NOT go nude.
2. You may find some (mainly European) naturist suntanners in Thailand on Mai Khao beach near Phuket, Chaweng beach on Koh Samui Island in the south, or Had Tien Beach on Pha Ngan Island. But conditions are always changing and it is good to be cautious and respect local sensitivities since nudism is officially illegal.
3. You will find people in the tourist industry very friendly and unshockable, so don't hesitate to ask where nude sunbathing might be possible. Having a Thai sarong handy or towel is always a good idea.