Facts checked against live data · 25 Aug 2026

Cambodia · September

Cambodia in September: Weather, Crowds & What's On

What September is actually like in Cambodia — average highs and lows, how much rain to expect, public holidays that fill trains and hotels, and verified places to go.

Weather in September

Average high31°C
Average low24°C
Rainfall377mm

The 9th warmest month of Cambodia's year. The wettest month — 20% of the year's rain falls now.

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When to Visit Cambodia: Month by Month →

Public holidays in September

Domestic travel peaks around these dates — book earlier and expect busier sights.

  • September 24 ទិវាប្រកាសរដ្ឋធម្មនុញ្ញ · Constitution Day
  • September 29 ពិធីបុណ្យភ្ផុំបិណ្ឌ · Pchum Ben

Climate figures are 10-year averages for Siem Reap, from Open-Meteo; holidays from public calendars. Updated monthly.

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