In the western part of the Gulf lies the Koh Samui archipelago, compromising than 80 beautiful tropical islands, and hosting some of the best diving and beaches in Thailand. The waters are warm and shallow, making sailing safe and enjoyable, and there is always another island or idyllic beach in sight.
The southwest monsoon season runs from May to October, with its clear skies, high temperatures and fair sailing winds. January to April is slightly cooler, with the northeast monsoon prevalent and offering steady winds. If you want adventurous sailing, then try the rainy months of October to December, with 25 knot winds and 8 feet waves!