September weather forecast
Cambodia

September in Cambodia marks the tail end of the wet season, exhibiting continued heavy rainfall and high humidity. During this month, average temperatures fluctuate between 24°C (75.2°F) and 31°C (87.8°F). Despite the cooling trend compared to the hotter months, the high humidity level contributes to a persistently warm climate.

In Phnom Penh, the nation's capital, average high temperatures settle around 31°C (87.8°F). Siem Reap, known for the historic Angkor Wat, also experiences similar temperature trends. The coastal city of Sihanoukville continues to offer a refreshing coastal climate with temperatures between 25°C (77°F) to 30°C (86°F).

September is typically the wettest month in Cambodia, with average precipitation reaching approximately 250mm (9.84"). These showers, which mostly occur in the afternoons and evenings, are often heavy but short-lived. Despite the high frequency of rainfall, mornings and early afternoons often present clearer skies and dry weather, conducive for outdoor activities.

When compared to August, September experiences a slight drop in temperatures while maintaining high levels of rainfall. As the transition into October occurs, the monsoon starts to recede, signaling the approach of the dry season. Despite the challenge posed by the heavy rains, September offers a unique opportunity to observe Cambodia's lush and vibrant landscapes, especially for visitors who appreciate the beauty of the monsoon season.

---

• Phnom Penh - September »
  The months with the highest humidity in Phnom Penh are September and October, with an average relative humidity of 84%. September carries forward the monsoon chapter in Phnom Penh with a substantial 249mm (9.8") of rainfall, making it the rainiest month of the year.
• Kampot - September »
  In September, on the first day of the month, sunrise is at 05:53 and sunset at 18:12. When is the sunrise / sunset in September in Kampot?
• Banlung - September »
  In Banlung during September, the rain falls for 19 days and regularly aggregates up to 306mm (12.05") of precipitation. On the first day of September in Banlung, Cambodia, sunrise is at 05:40 and sunset at 18:03.
• Kep - September »
  In September, the average heat index, which takes the relative humidity and factors it into the air temperature reading, is evaluated at 36°C (96.8°F). The months with the highest humidity in Kep are September and October, with an average relative humidity of 80%.
• Paôy Pêt - September »
  The month with the most rainfall in Paôy Pêt is September, when the rain falls for 27.8 days and typically aggregates up to 172mm (6.77") of precipitation. September is the most humid month in Paôy Pêt with an average relative humidity of 84%.
• Pailin - September »
  July through September, with an average relative humidity of 82%, are most humid months in Pailin, Cambodia. In Pailin in September, during 28.4 rainfall days, 222mm (8.74") of precipitation is typically accumulated.
• Krong Siem Reap - September »
  August and September, with an average of 5h of sunshine, are months with the least sunshine in Krong Siem Reap, Cambodia. In Krong Siem Reap in September, it is raining for 18 days, with typically 250mm (9.84") of accumulated precipitation.
• Krong Preah Sihanouk - September »
  The months with the least sunshine in Krong Preah Sihanouk are July through September, with an average of 5h of sunshine. July through September, with an average of 5h of sunshine, are months with the least sunshine in Krong Preah Sihanouk, Cambodia.
• Memot - September »
  The month with the most rainfall in Memot is September, when the rain falls for 26.3 days and typically aggregates up to 184mm (7.24") of precipitation. With an average relative humidity of 83%, September is the most humid month in Memot, Cambodia.