Weather in Cambodia in September

Cambodia's varied topography, including mountains, plains, and coastal areas, results in different weather conditions. In September, high-altitude areas such as the Cardamom and Dangrek Mountains tend to be cooler than the hot summer months, while the weather remains warmer in the lower areas, especially in the busy plains. Let's break down the specifics of the weather in Cambodia in September.

What is the weather like in Cambodia in September?

The weather in Cambodia in September is characterized by the continuation of the monsoon season, characterized by high humidity and frequent rainfall. During this time, the country experiences heavy downpours that can last for several hours, usually in the afternoon or early evening, followed by clear and sunny weather.

Heavy rainfall can affect travel plans and can also result in muddy paths and waterlogging, making some attractions difficult to access. Traffic can be slow due to wet roads, and boats are more likely to be used in flooded areas.

September is considered part of the low season in Cambodia due to the monsoon. During this time, there are fewer tourists, lower prices, and more accommodation options. This is the perfect time if you are looking for a more authentic and relaxed experience as the main attractions are less crowded.

September sees a lot of rainfall, which encourages the greening and filling of lakes and rivers, which can be particularly scenic. However, this can lead to localized flooding in some areas.

Overall, September may suit you if you are prepared for rain and want to explore the country without the crowds of tourists. However, due to the unpredictable weather, you need to pack properly and be flexible with your travel plans.

Rough Guide's Tip: A trip to Cambodia is a once-in-a-lifetime experience, so connect with our travel experts for the best trip experience.


Ta Keo, Angkor Wat, Cambodia © Shutterstock

Temperatures in Cambodia in September?

Cambodia in September sees average high temperatures of 30 to 32°C (86-89°F) and average low temperatures of 24 to 26°C (75-78°F). These temperatures can vary from region to region: coastal areas and lower altitudes can be slightly warmer, while higher altitudes such as the Cardamom and Dangrek Mountains can be cooler, especially at night.

This weather in Cambodia in September indicates that the country remains quite hot although frequent rainfall can provide temporary relief from the heat. However, the high humidity levels can make it feel warmer than it actually is.

This is a transitional period from the sweltering summer to the slightly cooler fall months, but overall the climate is still considered hot, especially during the daytime.

So although September in Cambodia is not as hot as the peak summer months, it is still warm and humid, so it is important to remember to stay hydrated and wear appropriate breathable clothing.

Set on taking a trip this autumn? Read up on the best places to visit in September.

Is September a good time to visit Cambodia?

Even though it is the wet season, September can still be a good time to visit Cambodia for several reasons. First, the crowds of tourists are still small, allowing for a more relaxed exploration of popular sites like Angkor Wat. Second, the scenery here is particularly lush and colorful, allowing for breathtaking views. In addition, fewer tourists result in lower accommodation and tour prices.

However, you should be prepared for some inconveniences due to rain, which may cause your travel plans to change and necessitate indoor activities. The weather in Cambodia in September can also create problems such as muddy roads and sometimes flooding in some areas.

Overall, September is a good time to visit Cambodia if you don't mind the rain and are looking for a less crowded and more economical trip. It is an ideal month for those who are flexible with their plans and interested in seeing the country's natural beauty in full bloom.

Can't decide on the season to travel? Explore our Cambodia year-round weather guide. Also, to better prepare for your trip you can read our travel tips for visiting Cambodia.

Angkor Wat, South Gate, Cambodia © Shutterstock

Angkor Wat, South Gate, Cambodia © Shutterstock

What about crowds and costs

September in Cambodia sees fewer tourists due to the monsoon season, resulting in fewer crowds, especially at major attractions such as Angkor Wat. This allows for a better experience of the country's historical and natural attractions. Also as a result of lower demand, the cost of accommodation, excursions, and other services are usually reduced, making September one of the most budget-friendly times to visit.

September contrasts with the high season from November to March when the weather is drier and cooler, but prices are higher and tourist spots are crowded. The lower number of tourists provides a unique opportunity to experience Cambodia's rich culture and landscapes without the hustle and bustle, offering better interaction with locals and a calmer environment.

So despite the rain, the combination of fewer tourists and low prices makes September an attractive option if you are looking for a more relaxed and affordable travel experience.

Looking for budget travel ideas? Explore our detailed list of the most budget-friendly destinations around the world.

Festivals and events in Cambodia in September

Some significant events take place in Cambodia during September that provide a unique experience. Constitution Day, celebrated on September 24, commemorates the signing of Cambodia's Constitution in 1993. This national holiday allows visitors to observe patriotic celebrations and official ceremonies, giving a glimpse into Cambodia's modern history and a sense of national pride.

The country also celebrates Ancestors' Day (also known as Pchum Ben) at the end of September. This significant Buddhist holiday is dedicated to honoring deceased relatives. During this time, Cambodians visit temples to make offerings, pray, and remember their ancestors, creating an atmosphere of reverence and community spirit.

Due to the importance of these events, it is advisable to book accommodation and make travel plans in advance. Participating in these cultural events can greatly enrich your visit to Cambodia, allowing for a deeper understanding of the country's cultural depth and community values.

Banteay Srei - hindu temple in Cambodia © Rolf_52/Shutterstock

Banteay Srei - hindu temple in Cambodia © Rolf_52/Shutterstock

Ready for your dream trip to Cambodia in September?

Depending on the weather in Cambodia in September, make your dream trip a reality by selecting one of our tailor-made trip services. We simplify planning by providing itineraries created by local travel experts.

  • A Vietnam, Cambodia, and Laos Adventure (15 days): Make the most of your time in Southeast Asia and discover not one, but three exciting countries. From Vietnam to Cambodia to Laos, you'll meet the locals, visit ancient temples, relax on a cruise, learn about Buddhism, and more. This itinerary will show you the wonders of Asia.
  • Khmer Cultural Treasures (9 days): Discover the wonders of Khmer architecture as you tour the temples of ancient Siem Reap, explore the Cambodian countryside, the floating markets of Tonle Sap, and visit all the cultural attractions of Phnom Penh, the bustling capital of Cambodia.
  • Cambodia’s Beaches and Temples (11 days): See the best of beautiful Cambodia on this amazing tour. Explore the bustling capital Phnom Penh, laze on the golden sands of the south coast beaches, discover local villages and Cambodian cuisine, and then get lost among the mystical temples of Angkor.
  • Discover more of our Cambodia itineraries.
Siem Reap, Cambodia

Siem Reap, Cambodia © Shutterstock

Visit Cambodia in other months

While each month offers a unique Cambodian experience, the best time to visit depends on your travel preferences, whether it's exploring ancient temples, enjoying the beaches, or participating in cultural activities. Here's a quick overview of what to expect in Cambodia by month:

  • October: Rainfall starts to decrease, making way for clearer skies and comfortable travel conditions towards the end of the month.
  • November: Marking the start of the peak season, November offers cool, dry weather, ideal for exploring and comfortable travel.
  • December: With cool temperatures and low humidity, December is one of the best times to visit, perfect for holiday celebrations and year-end travels.
  • January: The dry season is in full swing, offering sunny days and cool evenings, making it perfect for temple tours and outdoor adventures.
  • February: Still within the dry season, February provides excellent weather conditions for sightseeing, with minimal rainfall and comfortable temperatures.
  • March: As the hot season begins, temperatures start to rise, making early morning and late afternoon the best times for outdoor activities.
  • April: Known for the hottest temperatures of the year, April is also celebrated as the Khmer New Year, a significant cultural festival.
  • May: The beginning of the monsoon season brings sporadic showers, cooling down the hot temperatures and bringing the landscape to life.
  • June: Rainfall increases, leading to lush landscapes and fewer tourists, ideal for those seeking a quieter experience.
  • July: Similar to June, expect warm weather with regular rain showers, offering verdant scenery and fewer crowds.
  • August: The wet season continues with frequent rains, making it a good time for river and waterfall visits.
Olga Sitnitsa

written by
Olga Sitnitsa

updated 22.05.2024

Online editor at Rough Guides, specialising in travel content. Passionate about creating compelling stories and inspiring others to explore the world.

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