Cambodia in september: average Weather, Temperature and Climate, Where to go?
Weather in Cambodia in september 2025
Here, find the the weather forecast for september for most popular cities in Cambodia. These forecasts are probabilities for the month of september from weather reports for over 10 years. The percentage indicates the probability of having the weather indicated.
Average weather in september in Phnom Penh
bad weather UV index: 7
Weather at 6am
79°F
Partly Cloudy
39% of time
23%
16%
10%
Weather at 12pm
92°F
Moderate rain at times
41% of time
26%
16%
13%
Weather at 6pm
83°F
Heavy rain
50% of time
33%
9%
4%
Weather at 3am
79°F
32%
25%
17%
12%
More information about the weather in Phnom Penh in september
Where to go in Cambodia in september?
Where to go in Cambodia in september: destination map
Where to go in each region in september?
| Central Plains (Phnom Penh, Sambor Prei Kuk, Kampong Cham...) | 90°F to 92°F | 19 à 21 days | tolerable weather* | |
| East of Cambodia (Kratie, Banlung (Ratanakiri), Sen Monorom (Mondulkiri)...) | 83°F to 90°F | 19 à 27 days | bad weather* | |
| North West of Cambodia (Siem Reap (Angkor), Battambang, Poipet...) | 90°F to 92°F | 15 à 25 days | very bad weather* | |
| South-West and Coastline (Sihanoukville, Kampot, Koh Kong...) | 85°F to 86°F | 16 à 22 days | 85°F | very bad weather* |
Where should you go in Cambodia in september when it comes to the weather?
Remember:
The climate in Cambodia in september ranges from tolerable to very bad depending on the region and city.
All of the localities of Cambodia face the pangs of nature, since September is the wettest month of the year. Expect abundant rains that occur frequently. It is not surprising that the weather in Cambodia throughout September is unfavorable to outdoor activities. In fact, the days with the beautiful sun can be counted on the fingers of one hand.
Phnom Penh and the Center of Cambodia throughout September
With the noticeable decrease in temperature, the atmosphere is more comfortable. However, the moments to enjoy such to the fullest are rare because of the rain. In fact, the rainy days succeed one another. Moreover, even if the mornings seem acceptable with their cloud coverings, one should always expect showers the rest of the day.
Eastern Cambodia throughout September
It is practically impossible to take full advantage of the drop in temperature because it is rare to see beautiful sunny days. In fact, in the east of the country, the weather throughout September in Cambodia is deteriorating. It will also be necessary to face the appearance of thick fogs, in addition to the vigilance that one must have in relation to stormy showers.
Western Cambodia throughout September
Given the resurgence of rain, the climate throughout September in Cambodia is not very suitable for traditional touristic visits. However, if one likes to think outside the box, this is the best time to discover the temples of Angkor Wat in the rain. Of course, dress accordingly to enjoy the getaway. On the Battambang side, the relatively more frequent cloud thinnings allow a little more enjoyment of the sun.
The West Coast of Cambodia throughout September
The abundance of rain affects the weather of coastal cities. The seaside resorts are less frequented since the sunny days are becoming increasingly rare. Yet, with the drop in temperature, the heat becomes more comfortable. Temperatures vary between 27° C and 32° C.
Climate in Cambodia in september
Climate in Phnom Penh in september
In the month of september, the mean temperature in Phnom Penh is 86°F (maximum temperature is 92°F and minimum temperature is 79°F). The climate is very warm in that locality in the month of september. With 13.9in over 21 days, rain is to be feared during your vacations. Consider to pack rain clothes.
| September | |||
| Average temperature | 86°F | ||
| Highest temperature | 92°F | ||
| Lowest temperature | 79°F | ||
| Rainfall | 13.9in | ||
| Number of days with rainfall | 21 day(s) (70%) | ||
| Humidity | 87% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 51% | ||
| Length of day | 12:11 | ||
| Our opinion at whereandwhen.net | bad |
Climate in Battambang in september
In the month of september, the mean temperature in Battambang is 85°F (maximum temperature is 92°F and minimum temperature is 79°F). The climate is very warm in that locality in this month. With 13.7in over 21 days, you will suffer the rain for your trip. Remember to pack clothes for rain.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 92°F | ||
| Lowest temperature | 79°F | ||
| Rainfall | 13.7in | ||
| Number of days with rainfall | 21 day(s) (68%) | ||
| Humidity | 90% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 49% | ||
| Length of day | 12:12 | ||
| Our opinion at whereandwhen.net | bad |
Climate in Kampot in september
In the month of september, the mean temperature in Kampot is 85°F (maximum temperature is 86°F and minimum temperature is 81°F). The climate is burning here in the month of september. With 13in over 16 days, the weather is rather to rain throughout your journey. Consider to pack adapted clothes.
With a bad weather, the month of september is not the best time to go in that area.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 86°F | ||
| Lowest temperature | 81°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 13in | ||
| Number of days with rainfall | 16 day(s) (53%) | ||
| Humidity | 85% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 47% | ||
| Length of day | 12:11 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Koh Kong in september
In the month of september, maximum temperature is 85°F and minimum temperature is 79°F (for an average temperature of 81°F). The climate is very warm in this location in this month. With 22.6in over 18 days, rain is to be feared for your vacations. Remember to bring adapted clothes.
| September | |||
| Average temperature | 81°F | ||
| Highest temperature | 85°F | ||
| Lowest temperature | 79°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 22.6in | ||
| Number of days with rainfall | 18 day(s) (60%) | ||
| Humidity | 86% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 53% | ||
| Length of day | 12:11 | ||
| Our opinion at whereandwhen.net | very bad |
Climate in Kratie in september
In the month of september, maximum temperature is 90°F and minimum temperature is 79°F (for an average temperature of 85°F). The climate is very hot in this location in this month. With 14.4in over 19 days, you may find yourself often in the rain during your trip. Remember to pack rain clothes.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 90°F | ||
| Lowest temperature | 79°F | ||
| Rainfall | 14.4in | ||
| Number of days with rainfall | 19 day(s) (65%) | ||
| Humidity | 91% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 54% | ||
| Length of day | 12:12 | ||
| Our opinion at whereandwhen.net | tolerable |
All cities in Cambodia in september
| Phnom Penh in september | bad weather |
| Battambang in september | bad weather |
| Kampot in september | tolerable weather |
| Koh Kong in september | very bad weather |
| Kratie in september | tolerable weather |
| Siem Reap (Angkor) in september | very bad weather |
| Sihanoukville in september | very bad weather |
| Banlung (Ratanakiri) in september | bad weather |
| Kampong Cham in september | tolerable weather |
| Koh Rong in september | very bad weather |
| Koh Rong Samloem in september | very bad weather |
| Poipet in september | bad weather |
| Sambor Prei Kuk in september | tolerable weather |
| Sen Monorom (Mondulkiri) in september | bad weather |
| Beng Mealea in september | very bad weather |
| Botum Sakor National Park in september | very bad weather |
| Kbal Spean in september | very bad weather |
| Kirirom National Park in september | tolerable weather |
| Koh Russey (Bamboo Island) in september | very bad weather |
| Koh Sdach (King Island) in september | very bad weather |
| Koh Ta Kiev in september | very bad weather |
| Koh Thmei in september | very bad weather |
| Koh Tonsay (Rabbit Island) in september | tolerable weather |
| Krong Ban Lung in september | bad weather |
| Krong Kaeb in september | tolerable weather |
| Kulen Prum Tep in september | very bad weather |
| Phnum Samkoh Reserve in september | tolerable weather |
| Preah Vihear in september | very bad weather |
| Stoeng Treng in september | bad weather |
| Tonlé Sap in september | tolerable weather |
| Virachey National Park in september | very bad weather |
| Yeak Laom Lake in september | very bad weather |
| Koh Pen in september | tolerable weather |
Weather data for Cambodia in september:
Weather data for Cambodia in september is derived from an average of the weather forecast since 2009 in Cambodia. There is a margin of error and these forecasts are to be considered as general information only. The weather in Cambodia can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Cambodia.