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When to go · Koh Rong

Koh Rong in September

Avoid month. Listed as a month to avoid: May–Oct (rainy season, some services close).

Key facts

Verdict
Avoid
Temperature
32°C (90°F) / 27°C (81°F)
average high / low
Rain days
11
Crowds
Low
Cambodia overall
Prices
Low
Cambodia overall

Verdict

AvoidBest and avoid months for Koh Rong

Listed as a month to avoid: May–Oct (rainy season, some services close).

Is another month better than September?

September is rated avoid. These months rate higher:

Weather in September

Long-term averages
  • Koh RongHighs around 32 °C (90 °F), lows around 27 °C (81 °F), rain on about 11 days
  • South coast, Cambodia · Kampot, Kep, Sihanoukville, Koh Rongstorm or typhoon risk

    The southwest monsoon hits the coast hardest Jul–Sep: rough crossings to the islands and some resorts close.

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Pchum Ben (Ancestors' Day) big impact

    Sep–Oct, 3 days (lunar — check) · Cambodia

    Families return to home villages; pagodas crowded at dawn; buses full and many businesses shut.

Crowds and prices

Crowds · Cambodia overall
Low
Prices · Cambodia overall
Low

Cambodia overall: Wettest month: floods on rural roads and around Tonle Sap; Pchum Ben may fall here or in October.

Compare two months

Weather, crowds and prices for any two months in Koh Rong, side by side.

  • Verdict

    Sep: Avoid

    Jan: Great (better)

  • Daytime high

    Sep: 32 °C (90 °F)

    Jan: 28 °C (82 °F)

  • Night low

    Sep: 27 °C (81 °F)

    Jan: 24 °C (75 °F)

  • Rain days

    Sep: 11

    Jan: 2 (better)

  • Crowds

    Sep: Low

    Jan: High

  • Prices

    Sep: Low

    Jan: High

  • Festivals listed

    Sep: 1

    Jan: 0

September: Listed as a month to avoid: May–Oct (rainy season, some services close).

January: Inside Koh Rong's best window: Dec–Apr.

Koh Rong: figures are long-term averages from this guide, not a forecast.

What to pack

  • Light, breathable clothes, a sun hat and sunscreen
  • A rain jacket or umbrella and shoes that dry fast
  • A spare day in the plan: storms can cancel flights and ferries

Build the full packing list for your trip →

Across Cambodia in September →