Koh Rong in January
January is one of the best months for Koh Rong: the heart of the dry season, with sunny days and pleasant evenings.
| Average daytime high | 31 °C |
| Average night-time low | 22 °C |
| Average rainfall | 27 mm |
| Average sea temperature | 27.8 °C |
Long-term averages for nearby Sihanoukville: World Meteorological Organization 1982-2024; sea temperature: seatemperature.org.
Weather
Expect mostly sunny skies, lower humidity than later in the year and very little rain. Nights are the coolest of the year, at around 22°C.
Sea and activities
The sea is usually calm and clear, which is ideal for snorkeling, diving, boat tours and crossing to the neighboring islands.
Holidays and crowds
Early January is still busy after the New Year holidays, and Chinese New Year sometimes falls in late January. It is peak season, so book ferries and accommodation ahead.