Sihanoukville General information Sihanoukville was originally founded as a port town, half a century ago. Today this provincial town, located on the southwest peninsula facing the Gulf of Thailand, is Cambodia’s premier beach destination. Miles of powdered white sand beaches, picturesque islands and warm tropical waters can be visited year-round. The nearby islands teeming with coral and tropical fish offer excellent opportunities for snorkeling and diving. If you are a seafood lover, you will especially enjoy the local specialties of fresh caught crab and shrimp. Weather Summary Sihanoukville has a tropical climate; it sees significant rainfall most months and has a short dry season. The temperatures are highest in April, averaging around 29°C (84.2°F) and at the lowest in January, averaging 26.8°C (80.2°F). The average temperature year-round is 27.6° (81.7°F) and the average precipitation is 3498 mm. The least amount of rainfall occurs in February with an average of 26mm. Precipitation reaches its peak in August with an average of 697 mm.