Koh Rong in July
July is one of the wettest months of the year, suited to travelers who don't mind rain and want peace and low prices.
| Average daytime high | 31 °C |
| Average night-time low | 24 °C |
| Average rainfall | 562 mm |
| Average sea temperature | 29.4 °C |
Long-term averages for nearby Sihanoukville: World Meteorological Organization 1982-2024; sea temperature: seatemperature.org.
Weather
Rain is frequent, sometimes in longer spells, with over 550 mm on average. Daytime temperatures stay around 31°C.
Sea and activities
Rough seas can occasionally cause ferry cancellations. Some local guides report a particularly strong plankton glow in the rainy season.
Holidays and crowds
Many resorts offer big discounts. Keep a buffer day before your onward flight in case a ferry is cancelled.