The Islands in the South of Thailand are even more accessible with daily ferry services connecting them. If you depart from Phuket to to Railay Beach or Railay Beach to Phuket there is a choice of using the daily ferry service.

The local ferry departs daily with a journey time of 2 hours and 15 minutes. Use the search box to check exact departure times, ferry prices and book online.
The ferry arrives and departs Phuket from Rassada pier. When the ferry arrives at Railay Beach it stays out at sea and longtail boats will take you to and from the beach.
The ferry between Phuket and Railay Beach operates from November until April. In the low season they stop due to the winds changing directions creating unpredictable large waves. If you travel in in the Low Season then you will have to travel by minivan around the coastal road to Ao Nang where you can then catch the longtail boat to Railay.
Things To Do In Ao Nang, Railay and Krabi Town
There are lots of excursions and activities in Ao Nang itself, but also in nearby places like Railay Beach and Krabi Town.