Cambodia in September

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

• Angkor and the plains · Siem Reap, Phnom Penh, Battambang, Kampong Chamrainy

  Dry and cooler Nov–Feb; April tops 38 °C; the green season brings afternoon storms and flooded rural roads, but the moats and rice fields look their best.

• South coast · 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.

• North-east highlands · Mondulkiri, Ratanakirirainy

  Cooler nights; red-dirt roads turn to mud in the rains, so plan Nov–Mar.

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.

• Constitution Day

  24 Sep

  Public holiday.

• Pchum Ben (Ancestors' Day) big impact

  Sep–Oct, 3 days (lunar — check)

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

Crowds · Cambodia

Low

Prices · Cambodia

Low

• A rain jacket or umbrella and shoes that dry fast
• A spare day in the plan: storms can cancel flights and ferries

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Better another month

• South coast

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