Beaches and Islands in Southern of Thailand include Phuket Island, Krabi, Phi Phi islands, Koh Samui, Koh Tao, and Koh Phangan. Mainland beaches in the Gulf of Thailand close to Bangkok include Pattaya, Hua Hin, and Cha Am. In eastern Thailand are some of the most beautiful Islands including Koh Chang and Koh Samet.
The map below gives you an overview of the most important Cities and Islands in Thailand. It's definitely not a complete overview. There are additional small islands like Koh Lipe in the very south which normally doesn't find its way into tourist guides. But maybe such a small and well preserved Island is just what you're looking for?
This guide will mainly cover the following Islands and Beaches in the following three Areas:
Gulf of Thailand.
Gulf of Thailand East Coast.
Koh Kood The Andaman Sea.
Phi Phi Islands.
Most Tourists arrive from an International Flight in Bangkok, some of them flying directly to Phuket. Because most visitors start their Trip in Bangkok, it's good to have a look at transportation in Thailand. The majority of visitors will continue their trip by airplane; some will head to their destination by Taxi, Minibus or Bus.
It's also important to know that Thailand's rain season doesn't impact all parts of Thailand by the same time and impact, so be careful you choose your destination according to Season your traveling. While mostly dry in winter season, Monsoon can be quite annoying if you're looking for a beach holiday in summer time. There are some destinations like Phuket and Koh Samui which are perfectly fine to travel during Rainy season. Some of the smaller Islands are simply a no Go during this time, not only because of rain but also due to the annoyances and dangers that high waves might bring to the ferry services to smaller Islands.
So choose carefully to no be disappointed. A beach holiday in a small remote Beach Area during rainy season will definitely lead into serious frustration.