Koh Rong in August
August is the wettest month of the year on average. It is the quietest time on the island.
| Average daytime high | 31 °C |
| Average night-time low | 24 °C |
| Average rainfall | 617 mm |
| Average sea temperature | 29.2 °C |
Long-term averages for nearby Sihanoukville: World Meteorological Organization 1982-2024; sea temperature: seatemperature.org.
Weather
Expect a lot of rain, over 600 mm on average, often in long spells, with only short sunny breaks.
Sea and activities
Sea conditions are often rough and ferries can be cancelled. The upside: the waterfalls on Koh Rong are at their best.
Holidays and crowds
Low season with the lowest prices. Stay near a main pier (Koh Touch or Long Set) and plan with flexibility.