Last updated: August 21, 2025
October in Siem Reap, Cambodia is characterized by warm temperatures and high humidity. The maximum temperature reaches a sweltering 34°C (93°F), with an average of 28°C (83°F), while cooler evenings settle around 22°C (72°F). This month also marks a significant rainy season, with 238 mm (9.4 in) of rainfall over approximately 22 days, resulting in a humidity level of 85%. Visitors should prepare for both heat and frequent downpours, making it a time of vibrant landscapes and lush scenery in this enchanting region.
In October, Siem Reap, Cambodia, experiences a notable shift as the monsoon season begins to wane, bringing pleasant temperatures that are perfect for exploring its renowned temples. With minimums around 22°C (72°F) and maximums reaching 34°C (93°F), the weather is comfortably warm, tapering towards cooler evenings. The average temperature of 28°C (83°F) signifies a slight drop from the more sweltering summer months, providing a welcome respite for travelers. As the humidity lessens, October sets the stage for vibrant local festivals and outdoor adventures amidst a backdrop of lush, rejuvenated landscapes, making it an ideal time to immerse oneself in the rich culture and history of this captivating destination.
October in Siem Reap, Cambodia, marks the tail end of the monsoon season, bringing significant rainfall that measures around 238 mm (9.4 in) over approximately 22 days. This level of precipitation is comparable to September, demonstrating a trend of heavy rains that peaks during these months. As the region transitions from the lush greenery of the wet season to the drier months ahead, the daily showers often nourish the thriving landscapes and cultural heritage sites. It’s a captivating time where the atmosphere is filled with the richness of life, but visitors should be prepared for the frequent rains that define this beautiful yet unpredictable period.
In October, Siem Reap experiences a notable drop in humidity, settling at 85% after the peak months of August and September, where levels reached a sweltering 90%. This gradual decline marks a transition from the intense rainy season to the drier months ahead. Following an upward trend from May to September, which saw humidity levels soar from 78% to an impressive 90%, October provides a brief reprieve, making it a more comfortable time for exploration. Nonetheless, humidity levels remain high compared to the start of the year, when January and February offered a much drier climate at 55% and 50%, respectively. Visitors in October can expect a mix of humid days, but with the promise of cooler temperatures as the month progresses.
In October, Siem Reap experiences a UV Index of 12, categorizing it within the extreme exposure range. This reflects a slight decline from the consistently high levels seen throughout the preceding months, where the UV Index fluctuated between 13 to 15. The burn time remains critically short at just 10 minutes, urging locals and travelers alike to take precautions against sun exposure. As the region transitions toward the end of the rainy season, UV levels remain significant and warrant attention. Understanding these trends is crucial for effective sun protection, so be sure to check the full details at Siem Reap UV Index for safe outdoor activities.
UV Risk Categories
October in Siem Reap, Cambodia, brings a pleasant blend of sunshine, with an average of 277 hours of brilliant daylight. This month marks a subtle decline from the sun-drenched days of the preceding months, yet it still boasts more sunlight than many others throughout the year. The trend shows that after the peak sunshine of March (326 hours) and the consistently bright days of May (317 hours), October offers a gentle transition into the cooler seasons, making it an ideal time for exploration and cultural experiences under the warm, inviting skies. The diminishing daylight hours hint at the approaching change of season, inviting travelers to indulge in the enchanting blend of heritage and nature Siem Reap has to offer.
As the year progresses, Siem Reap, Cambodia sees a notable decline in sunny weather, particularly in the months leading to October. January starts off strong with a 49% chance of sun, but by the time October arrives, this figure plummets to a mere 10%. This trend reflects a significant drop, transitioning from the relatively favorable conditions of early in the year to what is typically the rainy season. Following October, chances of sunshine only improve slightly in November to 25%, indicating that the region is firmly wrapped in cloud cover during this part of the year. Travelers should brace for a rainy October, as the sun takes a backseat to the monsoon rains.
As the calendar turns to October, Siem Reap, Cambodia, enjoys a slight decline in daylight duration, averaging around 11 hours of sunlight per day. This shift mirrors the patterns established earlier in the year, with January through September basking in the glow of 12 hours of daylight. Notably, Siem Reap sees a consistently stable daylight duration of 11 to 12 hours, hinting at the region's moderate climate. As the year progresses towards the dry season, this subtle decrease in daylight serves as a gentle reminder of nature's rhythms, inviting visitors to relish the warm, golden hours that make exploring the stunning temples and vibrant culture of Siem Reap all the more enchanting.
As October arrives in Siem Reap, Cambodia, the winds begin to settle into a gentle rhythm, with an average wind speed of 2.1 m/s (5 mph). This marks a subtle dip from the brisk breezes of June and July, which recorded their highest averages at 3.3 m/s (7 mph). While the winds remain relatively calm compared to the summer months, October maintains a pleasant atmosphere, offering a refreshing contrast to the lingering humidity of the rainy season. The gradual easing into cooler temperatures sets the stage for exploration, allowing visitors to wander through ancient temples and vibrant markets under the soft caress of the October breeze. As the year moves toward its end, the winds remind us of the serene beauty and tranquility that Siem Reap has to offer.
Weather in Siem Reap varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Siem Reap, focusing on differences in temperature, rainfall, humidity, and UV levels.
In October, the weather is characterized by warmer temperatures, with a minimum of 22°C (72°F) and an average of 28°C (83°F), peaking at 34°C (93°F). Rainfall is significant, totaling 238 mm (9.4 in) over 22 days, accompanied by high humidity levels at 85%. In contrast, January presents a cooler climate, with a minimum temperature of 15°C (59°F) and an average of 27°C (81°F), while still reaching up to 35°C (95°F). This month sees drastically less precipitation, just 11 mm (0.4 in) over 2 days, coupled with lower humidity at 55%. For more detailed information about January's climate, check out Siem Reap weather in January.
October and February offer distinctly different weather experiences. In October, temperatures range from a mild 22°C (72°F) at night to a hot 34°C (93°F) during the day, accompanied by high humidity at 85% and significant rainfall of 238 mm (9.4 in) over 22 days. In contrast, February sees a more stable temperature profile, with a minimum of 17°C (63°F) and a maximum of 36°C (97°F), but with much lower humidity at 50% and minimal precipitation—only 9 mm (0.3 in) across just 2 days. This makes February a drier and generally hotter month compared to the wetter and more humid October. For more detailed insights about February weather, you can visit Siem Reap weather in February.
In comparing the weather of October and March, October presents a warmer atmosphere with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 34°C (93°F), accompanied by significant rainfall totaling 238 mm (9.4 in) spread over 22 days and high humidity at 85%. In contrast, March offers slightly higher average temperatures, reaching up to 30°C (86°F) and peaking at 37°C (99°F), yet boasts significantly less rainfall at just 40 mm (1.6 in) over only 6 days, with humidity dropping to 47%. For more detailed insights, you can explore Siem Reap weather in March.
October and April present contrasting weather conditions that significantly impact daily life. In October, temperatures range from a minimum of 22°C (72°F) to a maximum of 34°C (93°F), with an average of 28°C (83°F). This month sees considerable rainfall, with 238 mm (9.4 in) spread over 22 days and high humidity levels at 85%, making the atmosphere feel quite muggy. In contrast, April offers warmer conditions, with temperatures ranging from 20°C (68°F) to a scorching 39°C (102°F) and an average of 30°C (87°F). Rainfall is substantially lower at 86 mm (3.4 in) over 14 days, and humidity is notably reduced to 55%, creating a drier and more comfortable environment. For more detailed insights, check Siem Reap weather in April.
In October, the weather tends to be hot and humid, with average temperatures ranging from a minimum of 22°C (72°F) to a maximum of 34°C (93°F). The month also sees significant rainfall, with an average precipitation of 238 mm (9.4 in) over about 22 days, resulting in a humidity level of 85%. In contrast, May features even higher average temperatures, peaking at 39°C (103°F), while maintaining a minimum of 22°C (72°F) and an average of 30°C (86°F). Rainfall in May is less intense than in October, totaling 141 mm (5.6 in) across 20 days, contributing to lower humidity at 78%. For more detailed information, visit Siem Reap weather in May.
When comparing the weather between October and June, October tends to be slightly cooler and more humid than June. In October, temperatures range from a minimum of 22°C (72°F) to a maximum of 34°C (93°F), with an average of 28°C (83°F). The month experiences significant rainfall, accumulating 238 mm (9.4 in) over 22 days, contributing to its high humidity level of 85%. In contrast, June features warmer temperatures, with a minimum of 26°C (79°F) and a maximum of 38°C (100°F), while the average temperature is around 30°C (86°F). Rainfall in June is notably lower, at 117 mm (4.6 in) over 21 days, and humidity is slightly higher at 86%. For more detailed insights, you can visit Siem Reap weather in June.
In comparing the weather between October and July, October presents a slightly cooler climate with an average temperature of 28°C (83°F), compared to July’s average of 29°C (85°F). The maximum temperatures in July can soar to 38°C (101°F), making it significantly hotter than October's maximum of 34°C (93°F). Additionally, October experiences much higher precipitation, with 238 mm (9.4 in) over 22 days, while July receives 145 mm (5.7 in) over 23 days, indicating that October is generally wetter. Humidity levels are also high in both months, peaking at 88% in July compared to 85% in October. For more details on July weather, you can visit Siem Reap weather in July.
In comparing the weather between October and August, we see distinct differences in temperature and precipitation. October tends to have slightly cooler temperatures, with a minimum of 22°C (72°F) and an average of 28°C (83°F), compared to August, which experiences a minimum of 25°C (77°F) and averages 29°C (85°F). However, August boasts some of the highest maximum temperatures, reaching up to 37°C (99°F), while October maxes out at 34°C (93°F). In terms of precipitation, October is notably wetter, with 238 mm (9.4 in) over 22 days, whereas August receives 152 mm (6.0 in) across 23 days. Both months are characterized by high humidity, with August being slightly more humid at 90%, compared to October’s 85%. For more detailed information, you can check out Siem Reap weather in August.
In comparing the weather of October and September, October shows a slight decrease in minimum temperatures, averaging 22°C compared to September's 24°C. Both months experience similar average temperatures around 28°C, but September reaches a higher maximum of 35°C, while October peaks at 34°C. Precipitation levels are comparable, with October receiving 238 mm over 22 days, just slightly less than September's 240 mm over 25 days. Humidity remains high in both months, but October has a marginally lower average of 85% compared to September's 90%. For more detailed information, you can check Siem Reap weather in September.
In comparing the weather between October and November, October tends to be warmer and more humid, with an average temperature of 28°C (83°F) and a high of 34°C (93°F), alongside frequent rainfall of 238 mm (9.4 in) over 22 days. In contrast, November is slightly cooler, with average temperatures dropping to 27°C (82°F) and similar highs reaching 34°C (94°F), but it experiences significantly less precipitation, totaling only 78 mm (3.1 in) across 13 days. Additionally, the humidity in November decreases to 79%, offering a more comfortable atmosphere compared to the damp conditions of October. For more detailed insights, you can visit Siem Reap weather in November.
October and December present contrasting weather patterns. In October, temperatures range from a minimum of 22°C (72°F) to a maximum of 34°C (93°F), with an average of 28°C (83°F). This month also sees significant rainfall, with approximately 238 mm (9.4 in) over 22 days, contributing to a high humidity level of 85%. In contrast, December features a milder temperature range, with a minimum of 16°C (61°F) and an average of 26°C (80°F), peaking at 34°C (94°F). Rainfall is much lower in December at just 23 mm (0.9 in) over 5 days, leading to a decrease in humidity to 68%. For a detailed look at the weather specifics, visit Siem Reap weather in December.
In October, Siem Reap transitions into a notably humid phase, with temperatures reaching a warm average of 28°C (83°F) and occasional peaks at 34°C (93°F). This month marks a significant increase in rainfall, boasting around 238 mm distributed across 22 days, making it one of the wetter times of the year. Compared to the preceding months, October's combination of high humidity at 85% and frequent downpours creates a lush landscape, ideal for exploring the region's famous temples. For more details on how each month unfolds in this captivating destination, check out the full Siem Reap Climate overview.