Koh Rong in July
Not the best time
This is when Koh Rong tests your tropical storm tolerance. Serious rain and rough seas make this challenging for casual visitors, but prices drop dramatically and you'll practically have the island to yourself.
Weather
July brings the heart of monsoon season with heavy rainfall and high humidity creating that greenhouse effect feeling. Storms can last several hours and seas get choppy with southwest winds. But mornings are often gorgeous before the afternoon deluge.
31°C high25°C low16 rain days
Crowds & Cost
low crowds
~$45/day average
July Tips
- •Ferry schedules become unreliable in rough weather
- •Pack entertainment for weather-bound afternoons
- •Some beach restaurants close during heavy rain periods
All Months
November through April is peak season for good reason. The northeast monsoon keeps things dry, temperatures hover around 28°C, and the sea stays calm for boat transfers. December and January are busiest — book accommodation well ahead.
May through October brings the southwest monsoon. Expect daily afternoon downpours, rough seas that cancel boat services, and many guesthouses closing entirely. But here's the upside: the few places that stay open offer serious discounts, and you'll have beaches almost entirely to yourself between rain showers.
The bioluminescent plankton peaks during the dry season, especially on dark nights between November and March. Full moon periods wash out the effect, so time your visit for the new moon if this is your main reason for coming.
Avoid Cambodian holidays like Khmer New Year (April) and Pchum Ben (October) when domestic tourists pack the island. Chinese New Year (January/February) also brings crowds, though the atmosphere stays more international than local holiday periods.
Koh Rong Scores
Solo
7/10
Couples
7/10
Families
5/10
Adventure
8/10
Budget
8/10
Luxury
3/10