Cambodia weather in September

Considering a trip to Cambodia this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What is the weather like in Cambodia in September?

September in Cambodia generally has temperatures that range from warm to very warm, with heavy precipitation.

During the day the temperature is warm in Koh Rong Island at 29°C and very warm in Battambang at 34°C. As night falls, temperatures generally drop to 26°C in Battambang and 26°C in Koh Rong Island. The temperatures mentioned for daytime and nighttime are general averages. However there can be days that surpass these temperatures. So equip yourself with clothing that can handle the potential heat.

In September, precipitation varies across different areas. From heavy rainfall in Kampong Speu with an average of 222 mm to heavy rainfall in Sihanoukville with 571 mm. Based on our climate, it is the month with the most precipitation throughout the year in Siem Reap.

To learn more about the conditions in specific areas of Cambodia in September, check out the map below. For more details on the yearly weather, visit our Cambodia climate page.

Where to go in Cambodia in September

Find the average weather conditions in September for the most popular destinations in Cambodia on the map below. Click on a destination dot for more detailed information.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Cambodia

What is the weather like in September for the 5 most popular destinations in Cambodia?

Average weather in Siem Reap

In September Siem Reap generally has very high temperatures with maximum daytime temperatures around 33°C, minimum nighttime temperatures around 26°C and heavy monthly rainfall. So on average the conditions are poor that month.

Siem Reap
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
33°C 
26°C 
196 mm 
18 days 
33°C 
26°C 
286 mm 
18 days 
poor 
October   >> October
>>  
32°C 
25°C 
220 mm 
15 days 
poor 
Climate in Siem Reap

Average weather in Phnom Penh

In September Phnom Penh generally has very high temperatures with maximum daytime temperatures around 33°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.

Phnom Penh
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
34°C 
26°C 
175 hours 
172 mm 
17 days 
33°C 
25°C 
129 hours 
252 mm 
19 days 
poor 
October   >> October
>>  
33°C 
25°C 
205 hours 
247 mm 
17 days 
poor 
Climate in Phnom Penh

Average weather in Sihanoukville

In September Sihanoukville generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 26°C and heavy monthly rainfall. So on average the conditions are poor that month.

Sihanoukville
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
167 hours 
572 mm 
21 days 
poor 
29°C 
26°C 
148 hours 
571 mm 
21 days 
poor 
October   >> October
>>  
30°C 
26°C 
201 hours 
328 mm 
19 days 
poor 
Climate in Sihanoukville

Average weather in Kampot

In September Kampot generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.

Kampot
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
25°C 
167 hours 
269 mm 
19 days 
poor 
30°C 
25°C 
148 hours 
304 mm 
20 days 
poor 
October   >> October
>>  
30°C 
25°C 
201 hours 
271 mm 
19 days 
poor 
Climate in Kampot

Average weather in Battambang

In September Battambang generally has very high temperatures with maximum daytime temperatures around 34°C, minimum nighttime temperatures around 26°C and heavy monthly rainfall. So on average the conditions are poor that month.

Battambang
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
35°C 
26°C 
150 mm 
17 days 
poor 
34°C 
26°C 
232 mm 
17 days 
poor 
October   >> October
>>  
33°C 
25°C 
208 mm 
15 days 
poor 
Climate in Battambang

Is your destination not in the list? Have a look at other destinations in Cambodia.

Is September the best time to visit Cambodia?

In our opinion, September may not be the ideal time to visit Cambodia due to the typically poor weather in Siem Reap.

Generally speaking, January and December provide perfect weather in Siem Reap. On the other hand, the months of March, April, May, September and October tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Cambodia. Interested in the weather conditions in a specific month? Select the month below.

  • January      
  • February      
  • March      
  • April      
  • May      
  • June      
  • July      
  • August      
  • September      
  • October      
  • November      
  • December      
  • Weather and climate has detailed information for every country in the world. Are you going to Cambodia? Get detailed historical weather averages for many cities in Cambodia.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.