Weather in Cambodia in September

September in Cambodia is a hot month. Plan the serious walking for morning. The rest of the day wants shade and a slower pace.

A country pin in September is a warning: one region of Cambodia will not match another. Use a city page if you already know where you are going. Compared with March and December, September sits in the middle of Cambodia's year.

Cambodia
Average temp
28°C

25–32°C

Rainfall
254 mm

A wet month

Sunshine

What to expect

Daytime

Hot days in Cambodia. Ruins, markets and hills are a morning job. Midday sightseeing is how people remember September for the wrong reason.

Nights stay warm. Air-con, if you can get it, is part of the brief. A jumper for September in Cambodia is almost always a waste of bag space.

Rain

September is the wet side of the year in Cambodia, the wettest stretch on these averages. Days can be heavy. Plans that cannot survive rain are the wrong plans.

This is not a reason to skip Cambodia if you like the place. It is a reason to pack for weather and to stop treating every grey hour as a failed holiday.

Evening

Evenings stay warm.

What to pack

  • Sun protection

  • Rain jacket

Travel guides for Cambodia

What to read before you book.

All travel guides in Cambodia

Average weather in Cambodia

TemperatureRainfall

Source: MeteostatPeriod: 1991-2020Checked: 28 Aug 2026265 places covered

Check another month

This is the month you are reading. Change either side to look at another.

FAQs about Cambodia

Climate averages for Cambodia, 1991–2020.

The best time to visit Cambodia is between November and March, the most comfortable stretch of the year on these averages.

April is the hottest month, with an average around 31°C.

October is the wettest month, with about 260 mm of rain.

No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.