Cambodia's second-largest island sits 25km off the coast of Sihanoukville in the Gulf of Thailand. Covered in dense jungle with 43km of white sand beaches, it remained largely uninhabited until the early 2000s. The island's waters produce bioluminescent plankton that glow electric blue at night — one of the few places in the world where this phenomenon occurs regularly.
Koh Rong barely changes season: around 28°C most of the year.
There is a clear wet season from April – November, peaking in August with around 617 mm. The dry months run from January.
Wind is rarely an issue; most months sit between calm and a light breeze. Air quality is worth watching: February averages an AQI of 66, while October clears to 36.
Daylight is steady all year, around 12.0 hours a day.
For what you're after, the best months in Koh Rong are November – March. Expect slow internet (19 Mbps) and a low cost of living (about €650 a month).
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