Last updated: August 21, 2025
August in Phnom Penh, Cambodia is characterized by hot and humid conditions, with maximum temperatures reaching up to 36°C (98°F) and an average of 29°C (84°F). The month experiences considerable rainfall, totaling 197 mm (7.7 in) across approximately 26 days, contributing to a steamy atmosphere with humidity levels around 88%. Travelers should be prepared for both the heat and frequent showers, making August a time of vibrant greenery and lively city life, albeit with a chance of rain.
In August, Phnom Penh continues to bask in the warmth of its tropical climate, with temperatures peaking at a pleasant 36°C (98°F). The month features a consistent minimum of 25°C (77°F) and an average of 29°C (84°F), mirroring the conditions seen in the preceding months of July and June, which also exhibit similar temperature patterns. As the rainy season progresses, fluctuations remain subtle, with daytime highs slightly decreasing compared to the peak of May's swelter. The relatively stable warmth invites both locals and tourists to enjoy the vibrant city, making August a month of heat and humidity, perfectly captured by the backdrop of lush greenery that flourishes during the monsoon season.
August in Phnom Penh, Cambodia, marks a significant peak in precipitation, with an impressive 197 mm (7.7 inches) of rain falling over the course of 26 days. This increase is part of a discernible trend throughout the rainy season, which begins in earnest around May and swells to its fullest in August, characterized by a flourish of water that nourishes the lush landscapes of the region. Following July's substantial downpour of 154 mm, August’s rainfall heightens the atmosphere, transitioning the city into a vibrant hub of life despite the clouds overhead. As the month rolls into September, precipitation continues to rise, reaching 246 mm (9.7 inches), highlighting the relentless rhythm of the monsoon while drawing attention to the importance of the rainy season for Cambodia's agriculture and ecology.
August brings the peak of humidity to Phnom Penh, Cambodia, with levels reaching a sweltering 88%. This month marks the crescendo of a rising trend that begins in the early months of the year, where humidity typically hovers around 60%. As the calendar advances toward the rainy season, moisture levels soar—especially from June onwards, when they climb from 84% in June to the 86% recorded in July. The oppressive humidity of August leaves its mark, influencing not only the environment but also the daily lives of residents and visitors alike. As September approaches, humidity begins a gradual decline, suggesting a shift in the weather patterns as the rainy season continues.
In August, Phnom Penh continues to experience a very high UV Index of 14, categorizing it as extreme and allowing for a swift burn time of just 10 minutes. This trend of high UV exposure persists through the summer months, with similar indices recorded from February through July. As the rainy season approaches, the UV index remains notably elevated into September, suggesting that residents and visitors alike should remain vigilant against sun exposure. To stay protected, it's essential to plan activities outside of peak sun hours. For more information on UV levels, visit Phnom Penh UV Index.
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August in Phnom Penh, Cambodia, offers a delightful embrace of sunshine with 288 hours of bright, golden light. While this is slightly lower than the sun-drenched months of March and April, it still contributes to a lively summer atmosphere. The trend shows that as the year progresses, the city enjoys a peak in daylight hours from late winter through early spring, gradually tapering off into late summer. Notably, the month of August is characterized by a balance of warmth and occasional rain, bridging the sweltering heat of July and the cooler days of September. With sun shining for more than nine hours a day, August remains a fantastic time to soak in the vibrant energy of Phnom Penh, making it a cherished backdrop for locals and travelers alike.
In Phnom Penh, the likelihood of sunny weather dramatically decreases as the year progresses, with August experiencing one of the lowest chances at just 9%. This significant drop follows a trend of diminishing sunshine from the more pleasant months of February and March, which boast probabilities of 60% and 55% respectively. As the rainy season peaks in mid-year, conditions become increasingly overcast, culminating in July's mere 15% chance of clear skies. August, often shrouded in clouds and moisture, highlights the shift to wetter weather, reflecting the challenges of finding sunny moments in this vibrant city during late summer.
In August, Phnom Penh basks in 12 hours of daylight, a continuation of the consistency established throughout the summer months. As the rainy season progresses, daylight hours remain stable, reflecting a tropical climate's relatively uniform sun exposure. This trend of 12 hours of daylight, which also spans from March to September, highlights the region's balanced day length, contrasting sharply with the shorter, 11-hour days of the later months. Such a steady presence of sunlight not only enhances outdoor activities but also fosters a vibrant atmosphere, making August a lively time in the Cambodian capital.
In August, the wind in Phnom Penh gently sways at an average speed of 2.5 m/s (6 mph), bringing a refreshing breeze amidst the heat of the monsoon season. This slight dip from the higher speeds of July (2.9 m/s) and return to levels similar to November suggests a transitional period. Notably, the wind speeds have fluctuated throughout the year, with the strongest gusts typically occurring in December at 3.1 m/s. The trend indicates that while the summer months bring increased wind activity, the humidity and rain may temper the breezes as the year progresses, providing a mix of calm and invigorating moments for both residents and visitors alike.
Weather in Phnom Penh varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Phnom Penh, focusing on differences in temperature, rainfall, humidity, and UV levels.
In Phnom Penh, August is characterized by high humidity levels averaging 88% and frequent rainfall, with precipitation recorded on 26 days totaling 197 mm. Temperatures remain warm, ranging from a minimum of 25°C (77°F) to a maximum of 36°C (98°F). In contrast, January offers a much drier climate, with only 19 mm of rain over just 3 days, and lower humidity at 62%. The temperature range is slightly cooler, with a minimum of 19°C (66°F) and a maximum of 36°C (96°F), resulting in a more comfortable atmosphere. For more details, check out Phnom Penh weather in January.
August and February present contrasting weather patterns. In August, temperatures range from a minimum of 25°C (77°F) to a maximum of 36°C (98°F), with an average of 29°C (84°F). This month is characterized by high humidity at 88% and significant rainfall, totaling 197 mm (7.7 in) over 26 days. In comparison, February enjoys milder conditions with a minimum temperature of 20°C (68°F) and the same maximum of 36°C (98°F), but a slightly lower average temperature of 28°C (83°F). Precipitation is minimal during this month, with only 10 mm (0.4 in) and rainfall on just 2 days, resulting in a lower humidity level of 61%. Overall, February is considerably drier and less humid than August. For more detailed weather information, visit Phnom Penh weather in February.
In comparing the weather between August and March, August presents a much more humid experience with average temperatures reaching 29°C (84°F) and a high of 36°C (98°F). However, it is also characterized by significant rainfall, receiving 197 mm (7.7 in) over 26 days, resulting in a muggy atmosphere with a humidity level of 88%. In contrast, March offers a hotter climate with a maximum temperature of 39°C (102°F) and a lower average of 30°C (86°F). This month experiences minimal rainfall, with only 30 mm (1.2 in) over just 5 days, leading to a drier overall feel and a more comfortable humidity level of 61%. For a detailed perspective on the conditions during this month, visit Phnom Penh weather in March.
When comparing the weather in August to that of April, it’s evident that both months exhibit notable characteristics. In August, temperatures range from a minimum of 25°C (77°F) to a maximum of 36°C (98°F), with an average of 29°C (84°F). This month experiences higher humidity at 88% and significant rainfall, totaling 197 mm (7.7 in) over 26 days. In contrast, April is slightly warmer overall, with a minimum of 22°C (73°F) and a maximum reaching 39°C (103°F), while the average temperature stands at 30°C (87°F). However, April sees considerably less precipitation, with 78 mm (3.1 in) over just 14 days and lower humidity at 67%. For more specific insights, you can explore Phnom Penh weather in April.
August typically presents a slightly milder climate compared to May, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 36°C (98°F) and an average of 29°C (84°F). In contrast, May experiences higher maximum temperatures, reaching up to 40°C (104°F) while averaging 30°C (86°F). Both months see significant rainfall, but August has a higher precipitation level of 197 mm (7.7 in) over 26 days, compared to May’s 155 mm (6.1 in) across 23 days. Additionally, August exhibits higher humidity at 88%, while May's humidity stands at 78%. For more detailed insights on May weather, visit Phnom Penh weather in May.
In comparing the weather between June and August, both months exhibit similar temperature ranges, with June having a slightly higher maximum average at 37°C (99°F) compared to August's 36°C (98°F). Both months have a minimum temperature of 25°C (77°F) and average around 29°C (84°C). However, August sees a significant increase in precipitation, with 197 mm (7.7 in) falling over 26 days, while June has 155 mm (6.1 in) over 24 days. Additionally, humidity levels are slightly higher in August at 88%, compared to June's 84%. For more detailed information, you can check out Phnom Penh weather in June.
In comparing the weather of August to that of July, both months exhibit similar minimum and average temperatures, with both months starting at a comfortable 25°C (77°F) and averaging around 29°C (84°F). However, July tends to be slightly hotter at its maximum, reaching up to 38°C (100°F) compared to August's peak of 36°C (98°F). When it comes to precipitation, August experiences a substantial increase, recording 197 mm (7.7 in) over 26 days, whereas July sees less rainfall at 154 mm (6.1 in) across 25 days. Humidity levels are also slightly higher in August at 88% compared to July’s 86%. For more detailed insights, you can check out Phnom Penh weather in July.
August and September in Phnom Penh exhibit similar temperature ranges, with August slightly warmer overall, averaging 29°C (84°F) compared to September’s 28°C (83°F). Both months share a maximum temperature of 36°C (97°F) and a minimum of 25°C (77°F) and 24°C (76°F) respectively. However, September experiences increased rainfall, with precipitation reaching 246 mm (9.7 in) over 26 days, compared to August’s 197 mm (7.7 in) over the same number of days. Humidity remains high in both months, hovering around 88% in August and 87% in September. For more detailed information, check out Phnom Penh weather in September.
In comparing the weather patterns of August and October, we observe a slight decrease in temperatures during October, with average daily highs dropping from 29°C (84°F) in August to 28°C (83°F). August experiences more extreme heat with maximum temperatures reaching up to 36°C (98°F), while October's maximum is 35°C (95°F). Additionally, October sees a notable increase in precipitation, with 246 mm (9.7 in) recorded over 24 days, compared to August's 197 mm (7.7 in) over 26 days. Despite the higher rainfall in October, humidity levels are marginally lower at 84% compared to August's 88%. For more details on the weather during this month, check out Phnom Penh weather in October.
August and November in Phnom Penh present distinct weather patterns, reflecting the transition from the intense heat of summer to the cooler late rainy season. In August, temperatures range from a minimum of 25°C (77°F) to a maximum of 36°C (98°F), with an average of 29°C (84°F). The month is characterized by high humidity at 88% and abundant rainfall, totaling 197 mm (7.7 in) over approximately 26 days, making it one of the wettest months of the year.
In contrast, November offers slightly cooler temperatures, with a minimum of 22°C (71°F), an average of 28°C (82°F), and a maximum of 35°C (95°F). The precipitation decreases significantly to 121 mm (4.8 in) over about 15 days, and humidity also drops to 84%. Overall, November tends to be more comfortable and less wet compared to the sweltering, humid August conditions. For more details, check out Phnom Penh weather in November.
August and December in Phnom Penh present contrasting weather experiences. In August, temperatures range from a minimum of 25°C (77°F) to a maximum of 36°C (98°F), with an average of 29°C (84°F). This month is characterized by high humidity at 88% and significant rainfall, totaling 197 mm (7.7 in) over 26 days. In stark contrast, December offers milder temperatures, with a minimum of 19°C (67°F) and a maximum of 34°C (94°F), and an average of 27°C (81°F). Rainfall drops dramatically to only 40 mm (1.6 in) across just 5 days, while humidity decreases to 76%. For more detailed information, you can check Phnom Penh weather in December.
As August unfolds in Phnom Penh, residents and visitors experience a notable shift in weather patterns marked by high humidity and frequent rainfall. The month stands out with more precipitation days than others, contributing to a lush, vibrant environment. Although temperatures peak at warm levels, the consistent humidity can make the heat feel more intense compared to drier months. This unique blend of warmth and moisture creates a characteristic tropical atmosphere, making August a distinct yet picturesque time to explore the city. For a deeper understanding of what to expect, check out the detailed report on Phnom Penh Climate.