September is a great time to visit Cambodia if you don't mind the heavy rain showers (often in the afternoon and or night).
Tourist attractions are less crowded, hills are lush and green, and flights and accommodation are cheap.
Read on for a useful description of typical weather in September in Cambodia, including average temperatures and rainfall, as well as travel tips on what to wear and best places to visit.
- The Weather in September: Overview
- City Weather in Cambodia
- The 5 Best Places to Visit
- Crowds and Cost in September
- What to Wear in September
- Visit Cambodia with Asia Highlights
1. The Weather in September: Overview
- Average temperature range: 25–31°C (77–89°F)
- Average rainfall: 200–290 mm (8–12 inches)
- Average rainy days: 15–25
- Average sunny days: 5–10
It is quite hot and humid in September in Cambodia. The average minimum temperature is 25°C (77°F), while the average maximum is 31°C (89°F).
The average amount of rainfall in Cambodia in September is a high 227 mm (10 in), but it is concentrated in downpours, well interspersed with 5–6 hours of sunshine per day on average.
2. City Weather in Cambodia
| City |
Min. Temp. (ºC) |
Max. Temp. (ºC) |
Rainfall (mm) |
| Phnom Penh |
24 |
33 |
270 |
| Battambang |
26 |
33 |
290 |
| Siem Reap |
25 |
33 |
300 |
| Sihanoukville |
25 |
31 |
320 |
| Koh Rong |
26 |
32 |
290 |
Phnom Penh and southern Cambodia
In Phnom Penh, the weather in September is very warm.
The average minimum temperature is 24°C (75°F) and a maximum of 33°C (94°F).
The average precipitation during this month is 270 mm (11 in), with more than 26 rainy days.
Battambang and Siem Reap
In Siem Reap (Angkor), the weather in September gets very warm.
The average temperature is 29°C (84°F), with the average minimum temperature only falling to 26°C (79°F) and the daily maximum reaching 33°C (94°F) on average.
In September, the average precipitation is 290 mm (12 in), with around 17 days of rainfall.
Coastal Cambodia and Sihanoukville
The weather in Sihanoukville gets very humid, though not as hot during this time of the year.
The average temperature is 29°C (84°F), with the average minimum temperature at 25°C (77°F) and the average maximum reaching 31°C (89°F).
The average precipitation in September is 320 mm (13 in), with the number of rainy days usually exceeding 23.
3. The Best Places to Visit in Cambodia in September
September is a great month to travel to Cambodia if you are keen to avoid crowds and happy to take a chance with the rain, which often falls in the afternoon and night.
Here are some of the recommended places to visit in September.
Angkor Wat
Mahendraparvata for the Phnom Kulen Waterfalls
Tongle Sap Lake
Kratie: Natural Beauty and Wildlife
Phnom Penh
4. Crowds and Cost in September
September is in the low tourist season because of constant rainfall, which makes it challenging to visit different destinations.
For this reason, fewer tourists visit Cambodia this month, and most hotels offer good accommodation deals and bargains.
All of Cambodia turns lush green, and the lakes expand in size due to the countrywide rise in water levels.
5. What to Wear in September
Although September falls in the wet season, it is important to note that Cambodia is a hot and tropical country.
Synthetic clothes have the benefit of being more quick-drying and breathable, but choose natural fabrics such as silk, cotton, and linen to keep you cool and comfortable when not so active.
Loose-fitting light clothes such as long-sleeved shirts and trousers will help protect you from mosquito bites.
As it tends to get warm or hot during the day and stay warm in the evenings, jeans would not be a good choice.
As there is much rain during September, remember to pack a raincoat or poncho and a light pair of walking boots or shoes, depending on the activities you plan on engaging in.
6. Visit Cambodia with Asia Highlights
The month of September falls in Cambodia's wet season. Even with the rains, the mornings can get sunny and warm though sometimes the humidity levels drop, making the weather conditions comfortable for a morning tour.
As this is still the low tourism season, hotels and resorts offer low rates and special offers to tourists.
We can help you plan a successful trip and design a custom vacation that best suits you.