Last updated: August 21, 2025
September in Angkor Thom, Cambodia experiences a tropical climate, characterized by warm temperatures and significant rainfall. With maximum temperatures reaching 35°C (96°F) and an average of 28°C (83°F), the days are hot and humid. Minimum temperatures drop to 23°C (74°F), providing some reprieve during the cooler evenings. This month sees an impressive precipitation total of 256 mm (10.1 in) over approximately 25 days, contributing to the lush greenery of this historic region. The humidity levels are high at around 90%, making September a month of vibrant natural beauty, though best suited for travelers prepared for the wet and sticky conditions.
In September, Angkor Thom, Cambodia, experiences a slight cooling trend as the monsoon season begins to taper off. With minimum temperatures around 23°C (74°F) and maximums peaking at 35°C (96°F), the region remains warm but notably less oppressive than the sweltering months of April and May, which boast highs reaching up to 41°C (105°F). The average temperature hovers around 28°C (83°F), providing a comfortable respite ideal for exploring the ancient ruins. As humidity levels increase, the lush vegetation returns, making September a vibrant time to witness the temple complex's beauty amidst transitioning weather patterns, while still enjoying pleasant warm days.
In September, Angkor Thum experiences a significant surge in precipitation, with the rainfall reaching a remarkable 256 mm (10.1 in) over the course of 25 days. This month marks the peak of the wet season, as it builds on the substantial rainfall of August, which averages around 188 mm (7.4 in). The increased precipitation not only contributes to the lush greenery characteristic of this region but also highlights the clear trend of intensifying rainfall as the year progresses. Following September, rainfall begins to taper off in October, dropping to 211 mm (8.3 in), indicating that the monsoon's grip is starting to ease. This pattern showcases the dynamic climate of Angkor Thum, where vibrant growth is fueled by its seasonal deluges.
In September, Angkor Thum, Cambodia, experiences a peak in humidity, maintaining a stifling 90%—a trend that begins in the lush month of August and continues into the wet season. This marks a significant shift from the drier winter months, where humidity levels hover around 50-55% from January to April. As the tropical climate settles in, the transition is palpable; with May's humidity rising sharply to 78%, it paves the way for the sweltering summer months of June and July, which reach 86% and 88%, respectively. Following this pattern, September stands out not only for its persistent heat but also for the relentless humidity that envelops the region, a prelude to the gradual decline during the tail end of the rainy season in October.
In September, Angkor Thum, Cambodia, experiences a UV Index of 14, which falls into the extreme exposure category, demanding vigilance for sun protection. The burn time is notably short, at just 10 minutes, mirroring the intense conditions seen throughout the peak months of March to May. This trend of elevated UV levels signifies that consistently high solar intensity is a hallmark of the region. As the rainy season approaches, September maintains these extreme levels before gradually tapering off in October to a UV Index of 13. For those planning to explore the breathtaking temples and rich culture, a strong sunscreen and protective clothing are essential in combating the perilous rays of the sun. For more detailed UV information, check out Angkor Thum UV Index.
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As summer transitions into autumn, September in Angkor Thum, Cambodia, greets visitors with a gentle decline in sunshine hours, offering 271 hours of warm sunlight. This marks a noticeable dip from the bustling summer months of June and July, where the region basked in over 299 hours of glow. Despite this slight reduction, September still benefits from vibrant daylight, contributing to the lush landscapes and rich cultural heritage that define this extraordinary destination. Following the sunny August, which brought 285 hours, the lingering sunlight of September sets the stage for pleasant discoveries, ensuring that travelers can still explore the magnificent temples and natural beauty without the sweltering heat of peak summer.
In Angkor Thum, Cambodia, the likelihood of sunny weather takes a notable dip by September, with just a 9% chance of clear skies. This marks a continuation of the trend seen through the preceding months, where sunshine becomes increasingly scarce from the peak of 76% in February to the dismal 15% by July. As the rainy season approaches, the sun retreats, leaving visitors to brace for the cloudier, wetter months ahead. For those planning a trip, it’s wise to keep in mind that September is one of the cloudiest periods, setting the stage for a vibrant green landscape, albeit at the expense of sunshine.
In Angkor Thum, Cambodia, the month of September continues the delightful trend of stable daylight that has characterized the region since March. With an average of 12 hours of daylight, September falls into a comfortable rhythm that begins in the spring and persists through the summer, providing ample time to explore the breathtaking temples and lush landscapes. As the year progresses towards October, daylight starts to decline, reverting to 11 hours in a gentle shift that heralds the change of seasons. This consistency in daylight hours not only enhances outdoor adventures but also invites visitors to immerse themselves in the rich cultural tapestry that Angkor Thum has to offer.
In September, the winds in Angkor Thum, Cambodia, tend to be gentler, with an average speed of 1.7 m/s (4 mph). This marks a noticeable dip from the more robust breezes of the preceding months, highlighting a trend where summer gives way to the tranquil whispers of fall. As the region transitions away from the peak winds of June and July, September's calmer atmosphere creates a serene backdrop for exploring the ancient temples. Following this period, wind speeds gradually pick up again in October, hinting at a return to more lively breezes as the dry season approaches. This seasonal pattern not only influences the climate but also enhances the enchanting ambiance of Angkor Thum, inviting visitors to bask in the tranquil beauty of this historic landscape.
Weather in Angkor Thum varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Angkor Thum, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinct contrasts in weather variations. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 35°C (96°F), with an average of 28°C (83°F). This month is characterized by high humidity at 90% and significant rainfall, totaling 256 mm (10.1 in) across 25 days. In contrast, January features cooler temperatures, with a minimum of 14°C (57°F), an average of 27°C (81°F), and a maximum still reaching 35°C (96°F). The month is remarkably dry, receiving only 8 mm (0.3 in) of precipitation over just one day, and experiences much lower humidity at 55%. For a more detailed look at weather conditions during this time, you can check Angkor Thum weather in January.
September and February showcase distinct weather patterns, with September characterized by high humidity and significant rainfall, while February presents a drier and warmer atmosphere. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 35°C (96°F), accompanied by an average of 28°C (83°F) and a staggering 256 mm (10.1 in) of rain over 25 days, leading to a high humidity level of 90%. In contrast, February sees lower humidity levels at 50% with a narrower temperature range where the minimum is 16°C (61°F) and the maximum rises to 37°C (100°F), averaging around 28°C (82°F) and with only 8 mm (0.3 in) of rain over just 2 days. Those interested in the specifics of February weather can find more details here: Angkor Thum weather in February.
In comparing the weather of September and March, it's evident that March typically enjoys warmer temperatures, with averages reaching up to 30°C (86°F) and peaks of 39°C (103°F). In contrast, September experiences lower temperatures, averaging around 28°C (83°F) with a maximum of 35°C (96°F). Additionally, September is significantly wetter, with substantial rainfall of 256 mm (10.1 in) spread over 25 days, contributing to a high humidity of 90%. March, on the other hand, is much drier, receiving only 38 mm (1.5 in) of rainfall over just 6 days, accompanied by a much more comfortable humidity level of 47%. For more details, you can check out the Angkor Thum weather in March.
Comparing the weather in September and April reveals distinct differences in temperature, precipitation, and humidity. September experiences milder temperatures, with a minimum of 23°C (74°F) and an average of 28°C (83°F), but it is also marked by significant rainfall, receiving 256 mm (10.1 in) over 25 days and high humidity at 90%. In contrast, April showcases hotter conditions, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 40°C (105°F), while rainfall is considerably lower at 74 mm (2.9 in) over just 14 days and humidity at a much drier 55%. For more detailed insights into April's weather, check out Angkor Thum weather in April.
September and May offer distinct weather patterns, shaping the experience of each month. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 35°C (96°F), with an average of 28°C (83°F). This month is characterized by high humidity at 90% and significant rainfall, totaling 256 mm (10.1 in) over 25 days. In contrast, May brings slightly higher average temperatures, with a minimum of 22°C (71°F) and a maximum soaring to 41°C (105°F), averaging 30°C (86°F). While May is warmer, it experiences less precipitation at 137 mm (5.4 in) over 19 days and lower humidity at 78%. For a closer look at weather conditions during May, visit Angkor Thum weather in May.
When comparing the weather in September and June, it is clear that both months feature high temperatures, but with some notable differences. September has a slightly lower minimum temperature of 23°C (74°F) and an average temperature of 28°C (83°F), while June experiences a higher minimum of 25°C (77°F) and an average of 30°C (86°F). June can peak at a scorching maximum of 39°C (102°F), whereas September's maximum reaches 35°C (96°F). Additionally, September is significantly wetter, with 256 mm (10.1 in) of precipitation over 25 days, compared to June's 127 mm (5.0 in) across 21 days. Humidity levels are also slightly higher in September at 90%, compared to June's 86%. For a more detailed understanding, you can check Angkor Thum weather in June.
In comparing the weather between September and July, both months exhibit warm temperatures, though July tends to be slightly hotter on average, with a maximum reaching 38°C (101°F) compared to September's 35°C (96°F). However, September experiences more rainfall, with a significant 256 mm (10.1 in) over 25 days, while July receives only 172 mm (6.8 in) across 24 days, resulting in a wetter climate as the summer transitions into fall. The humidity is notably high in both months, with September being marginally more humid at 90% versus July's 88%. For more detailed weather insights, you can refer to Angkor Thum weather in July.
In comparing the weather of September and August, both months experience high humidity levels at 90%. However, September sees a slight decrease in temperature, with average highs reaching 35°C (96°F) compared to August’s maximum of 37°C (99°F). Precipitation also increases in September, accumulating to 256 mm over 25 rainy days, whereas August has a total of 188 mm over 24 days. For more detailed information about the weather in August, you can check Angkor Thum weather in August.
In comparing the weather from September to October, we see a slight decline in temperatures, with September experiencing a minimum of 23°C (74°F) and a maximum of 35°C (96°F), while October sees a minimum of 21°C (71°F) and a maximum of 34°C (94°F). Both months share a similar average temperature of around 28°C (83°F). Precipitation decreases from 256 mm (10.1 in) over 25 days in September to 211 mm (8.3 in) over 22 days in October, indicating a slightly drier condition. Additionally, humidity levels also drop from 90% in September to 85% in October, contributing to a more comfortable experience. For more specifics on the October weather, you can check out Angkor Thum weather in October.
September and November exhibit distinct differences in weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 35°C (96°F), with an average of 28°C (83°F). This month experiences significant rainfall, totaling 256 mm (10.1 in) over 25 days, coupled with a high humidity level of 90%. In contrast, November has a slightly cooler minimum temperature of 20°C (69°F) and a similar maximum of 35°C (96°F), with an average of 27°C (81°F). Rainfall in November is considerably less, with only 73 mm (2.9 in) over 12 days, and the humidity drops to 79%. For a more detailed look at the weather specifics, you can visit Angkor Thum weather in November.
September and December showcase a striking contrast in weather conditions. In September, temperatures range from a minimum of 23°C (74°F) to a high of 35°C (96°F), with an average of 28°C (83°F). However, it is also the wettest month, experiencing 256 mm (10.1 in) of precipitation over 25 days, accompanied by a high humidity level of 90%. In contrast, December brings cooler temperatures with a minimum of 15°C (60°F) and a similar maximum of 35°C (96°F), but the average drops to 26°C (79°F). Rain is scarce, with only 22 mm (0.9 in) of precipitation over just 5 days and a lower humidity of 68%. For more detailed information, you can check out Angkor Thum weather in December.
September in Angkor Thum brings a noticeable shift in weather patterns, characterized by high humidity levels and frequent rainfall. With maximum temperatures peaking at 35°C, the days tend to feel hotter, while the average temperature hovers around a comfortable 28°C. However, the month is marked by an impressive amount of precipitation, with rain gracing the area on about 25 days, contributing to a lush and vibrant landscape. This combination of warmth and moisture sets September apart from the drier months, making it a unique time to experience the beauty of Angkor's ancient wonders. For more on what to expect year-round, explore Angkor Thum Climate.