Cambodia weather in September

Many people wonder what kind of weather they can expect in September in Cambodia. Is this month a good time to go to Cambodia? To answer that question we created this page with all the information you need.

What is the weather like in Cambodia in September?

The weather conditions in Cambodia in September are generally poor.

During September in Cambodia the average maximum daytime temperatures are very high and range from 30°C (86°F) in Stung Treng to 32°C (90°F) in Phnom Penh. Minimum nighttime temperatures generally drop to 24°C (76°F) in Phnom Penh and 23°C (73°F) in Stung Treng. These night and day temperatures are average and some days may be even warmer. So be prepared and dress for the heat.

Precipitation in September ranges from heavy in Battambang with an average of 245mm (9.6inch) rainfall to heavy in Stung Treng with 323mm (13inch). It is the wettest month of the year in Siem Reap.

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.

Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inch 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 32°C (89°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Siem Reap
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
33°C / 91°F 
25°C / 77°F 
207mm / 8.1inch 
18 days 
poor 
32°C / 89°F 
25°C / 77°F 
288mm / 11inch 
18 days 
poor 
October   >> October
>>  
32°C / 89°F 
25°C / 76°F 
198mm / 7.8inch 
16 days 
Climate in Siem Reap

Average weather in Phnom Penh

In September Phnom Penh generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 24°C (76°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Phnom Penh
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
33°C / 91°F 
25°C / 76°F 
175 hours 
182mm / 7.2inch 
18 days 
32°C / 90°F 
24°C / 76°F 
129 hours 
272mm / 11inch 
21 days 
poor 
October   >> October
>>  
32°C / 89°F 
24°C / 75°F 
205 hours 
249mm / 9.8inch 
19 days 
poor 
Climate in Phnom Penh

Average weather in Sihanoukville

In September Sihanoukville generally has very high temperatures with maximum daytime temperatures around 31°C (87°F), minimum nighttime temperatures around 25°C (78°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Sihanoukville
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 87°F 
25°C / 77°F 
167 hours 
379mm / 15inch 
15 days 
poor 
31°C / 87°F 
25°C / 78°F 
148 hours 
320mm / 13inch 
19 days 
poor 
October   >> October
>>  
31°C / 88°F 
25°C / 77°F 
201 hours 
291mm / 11inch 
17 days 
poor 
Climate in Sihanoukville

Average weather in Kampot

In September Kampot generally has very high temperatures with maximum daytime temperatures around 31°C (87°F), minimum nighttime temperatures around 25°C (78°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Kampot
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 87°F 
25°C / 77°F 
167 hours 
379mm / 15inch 
15 days 
poor 
31°C / 87°F 
25°C / 78°F 
148 hours 
320mm / 13inch 
19 days 
poor 
October   >> October
>>  
31°C / 88°F 
25°C / 77°F 
201 hours 
291mm / 11inch 
17 days 
poor 
Climate in Kampot

Average weather in Battambang

In September Battambang generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Battambang
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 88°F 
23°C / 73°F 
168mm / 6.6inch 
16 days 
31°C / 88°F 
23°C / 73°F 
245mm / 9.6inch 
16 days 
poor 
October   >> October
>>  
30°C / 86°F 
23°C / 73°F 
240mm / 9.4inch 
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 go to Cambodia?

In our opinion September is not the best time to visit Cambodia with commonly poor weather in Siem Reap.

On average the best time to visit Cambodia is in January and December with generally perfect weather in Siem Reap. The worst months are April, May, June, August and September that can 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.

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  • Weather and climate has detailed information for almost all countries in the world. Are you going to Cambodia? Get detailed historical weather averages for many cities in Cambodia.

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