Last updated: August 21, 2025
In April, Siem Reap, Cambodia experiences warm and inviting weather, characterized by a maximum temperature reaching 39°C (102°F) and an average of 30°C (87°F). The evenings provide a refreshing contrast with temperatures dipping to a minimum of 20°C (68°F). While the month sees 86 mm (3.4 in) of rainfall spread over 14 days, humidity levels hover around 55%, creating a tropical atmosphere. Travelers can expect a blend of sun-soaked days and occasional showers, making it a vibrant time to explore the cultural wonders of this enchanting city.
April in Siem Reap, Cambodia, marks a transition into the hottest period of the year, with temperatures reaching a maximum of 39°C (102°F). The month starts off with a minimum temperature of 20°C (68°F), offering a warm embrace that sets the stage for daytime heat. As the average temperature hovers around 30°C (87°F), visitors can expect a mix of sun-drenched adventures and the vibrant local culture. Interestingly, while the minimum temperatures remain relatively mild compared to the peak heat of the month, the trend shows a consistent rise in warmth from the earlier months of the year. Prepare for the intense tropical heat and hydration to fully enjoy the rich history and stunning temples Siem Reap has to offer!
In April, Siem Reap experiences a notable increase in precipitation, with 86 mm (3.4 in) of rain falling over 14 days—a stark contrast to the drier months of January and February. This uptick marks the beginning of the wet season, following the relatively dry spells of the first quarter. March already hinted at this transition with 40 mm of rainfall, but April sets a new pace, paving the way for May's even heavier downpour. As the month progresses, lush greenery begins to blanket the landscape, and the rhythmic patter of rain creates a vivid backdrop to this vibrant city, highlighting the seasonal shift as temperatures rise and humidity increases.
In April, Siem Reap experiences a return to higher humidity levels, with averages climbing back to 55%, mirroring the January figures. This marks a transition from the consistently lower humidity of the preceding months—March recorded just 47%. As the region approaches the humid peak of the rainy season, where humidity soars to 78% in May and reaches its highest point of 90% through the summer months, April serves as a brief reminder of the more temperate conditions enjoyed earlier in the year. Travelers should prepare for the increasing moisture as the vibrant landscapes of Siem Reap come alive with the onset of warmer and wetter weather.
In April, Siem Reap, Cambodia, experiences an extremely high UV Index of 14, with a burn time of just 10 minutes. Following a peak in March at 15, the UV levels begin to stabilize but remain critically elevated, indicating that sun protection is crucial for anyone spending time outdoors. This trend of extreme exposure persists through the following months, highlighting the need for awareness and precautions against harmful UV radiation. As the region transitions towards the wet season, outdoor enthusiasts should remain vigilant and equip themselves with appropriate sun protection measures to enjoy their adventures safely. For more information on UV levels throughout the year, check out Siem Reap UV Index.
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As April arrives in Siem Reap, sunshine graces the landscape with an impressive 309 hours of radiant daylight, maintaining a vibrant atmosphere that enchants visitors. Following the sunniest month of the year, March, with its spectacular 326 hours, April continues to offer plenty of warm, bright days. This slight dip in sunshine hours doesn't overshadow the needed warmth before the rains begin; rather, it seamlessly fits within a trend of abundant sunlight that the region enjoys throughout the year. The onset of May sees a rebound to 317 hours, keeping spirits high as Siem Reap transitions from the dry season into the lush growth of the upcoming summer months. This pattern exemplifies the region's reliable climate, inviting exploration and adventure under the beautiful Cambodian sun.
While April may bring a decline in sunny weather in Siem Reap, with a probability of just 31%, the trend highlights a clear transition as the region moves from the dry season to the onset of the rainy season. This dip follows a promising February, which holds a robust 75% chance of sun, and a moderately sunny March at 62%. As the balmy days of spring give way to the heavier rains of May, it’s clear that April serves as a bridge, offering occasional sunshine but also hinting at the changing climate ahead. Therefore, if you’re planning a visit, be prepared for a mix of sunshine and clouds, capturing the final whispers of dry season charm before the rains arrive.
In April, Siem Reap, Cambodia basks in a delightful 12 hours of daylight, seamlessly continuing the trend established in March. As the region transitions from the earlier months, which see a steady 11 hours of daylight in January and February, the increase to 12 hours marks the onset of brighter days. This sustained duration of daylight will carry on through the following months of May, June, July, August, and September, creating an ideal backdrop for outdoor adventures and cultural explorations. With the days slowly shortening again as October approaches, April serves as a perfect balancing point in Siem Reap's annual rhythm of light.
In April, Siem Reap experiences a gentle breeze, with an average wind speed of 2.1 m/s (5 mph), a slight dip from the previous months. This calmness sets the stage for the growing heat of the upcoming dry season, as the wind begins to pick up pace in the following months, reaching 3.3 m/s (7 mph) by June. Interestingly, while January and December see comparatively higher breezes at 2.5 m/s (6 mph), the tranquility of April creates a serene atmosphere, perfect for exploring the ancient temples and picturesque landscapes. As the months progress, winds tend to increase again, but April’s soft air remains a hallmark of the seasonal transition, gently whispering the stories of Cambodia's rich heritage as visitors revel in its beauty.
Weather in Siem Reap varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Siem Reap, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in April and January, a noticeable difference in temperature can be observed. April typically boasts warmer temperatures, with a minimum of 20°C (68°F), an average of 30°C (87°F), and a maximum that can reach up to 39°C (102°F). In contrast, January features cooler temperatures, starting at a minimum of 15°C (59°F), averaging 27°C (81°F), and peaking at 35°C (95°F). Additionally, April experiences significantly more precipitation, with 86 mm (3.4 in) over 14 days, compared to January's modest 11 mm (0.4 in) over just 2 days. Interestingly, both months maintain a consistent humidity level of 55%. For more insights on January weather, you can check Siem Reap weather in January.
In comparing the weather between April and February, it’s clear that April tends to be hotter and more humid. April boasts a minimum temperature of 20°C (68°F) and can reach scorching highs of 39°C (102°F), while February starts slightly cooler, with a minimum of 17°C (63°F) and maximums of 36°C (97°F). Additionally, April sees significantly more rainfall, with 86 mm (3.4 in) of precipitation over 14 days, compared to February’s mere 9 mm (0.3 in) over just 2 days. Humidity levels are also higher in April at 55%, compared to February's 50%. For more detailed information on February's weather, visit Siem Reap weather in February.
April's weather in Siem Reap shows a slight increase in temperature compared to March, with minimum temperatures dipping to 20°C (68°F) and maximums reaching up to 39°C (102°F). The average temperature is similar between the two months at 30°C (87°F) for April and 30°C (86°F) for March. Notably, April experiences significantly more precipitation, measuring 86 mm (3.4 in) over 14 days, which is almost double the 40 mm (1.6 in) of rain over just 6 days in March. Additionally, humidity is higher in April at 55%, compared to March's 47%. This weather pattern indicates that while April offers warmer evenings, it also brings increased rainfall and humidity. For more details, check Siem Reap weather in March.
In comparing the weather between April and May, both months exhibit high temperatures with averages around 30°C (86°F). However, May tends to be slightly warmer with a minimum temperature of 22°C (72°F) compared to April's 20°C (68°F). Additionally, May experiences increased precipitation, totaling 141 mm (5.6 in) over 20 rainy days, while April sees 86 mm (3.4 in) over 14 days. The humidity also rises significantly in May, reaching 78%, compared to April's 55%. For more detailed information, you can refer to Siem Reap weather in May.
In the comparison of April and June weather, April generally features slightly cooler temperatures, with a minimum of 20°C (68°F) and a maximum of 39°C (102°F), while maintaining an average temperature of 30°C (87°F). Precipitation in April is relatively moderate, with 86 mm (3.4 in) over 14 days and a humidity level of 55%. Conversely, June sees warmer minimum temperatures at 26°C (79°F) and a maximum of 38°C (100°F), with an average similar to April at 30°C (86°F). However, June experiences more precipitation, totaling 117 mm (4.6 in) across 21 days and a much higher humidity level of 86%. For a detailed look at the weather during June, visit Siem Reap weather in June.
In April, the weather is characterized by a warmer average temperature of 30°C (87°F), with daytime highs reaching up to 39°C (102°F) and a relatively moderate humidity level of 55%. However, this month also experiences considerable rainfall, with 86 mm (3.4 in) spread across 14 days. In contrast, July sees slightly cooler average temperatures at 29°C (85°F) and a higher minimum temperature of 25°C (77°F). Despite having slightly lower high temperatures at 38°C (101°F), July is marked by increased humidity at 88% and a significant rise in precipitation, totaling 145 mm (5.7 in) over 23 days. For more detailed insights, you can check out Siem Reap weather in July.
When comparing the weather in April and August, there are notable differences in temperature and precipitation. In April, temperatures range from a minimum of 20°C (68°F) to a maximum of 39°C (102°F), with an average of 30°C (87°F) and relatively lower humidity at 55%. The month also sees significant rainfall, with 86 mm (3.4 in) spread over 14 days. In contrast, August experiences warmer minimum temperatures starting at 25°C (77°F) and an average of 29°C (85°F), while the maximum reaches 37°C (99°F). However, it is much wetter in August, with 152 mm (6.0 in) of precipitation over 23 days and high humidity levels at 90%. For more details, you can check out Siem Reap weather in August.
April and September showcase distinct weather patterns, each offering a unique climate experience. In April, temperatures can reach up to 39°C (102°F), making it a hotter month, while the average temperature hovers around 30°C (87°F). However, it also sees a moderate amount of rainfall at 86 mm (3.4 in) over 14 days, with a humidity level of 55%.
Conversely, September presents milder temperatures, with a maximum of 35°C (96°F) and an average of 28°C (84°F), but it significantly increases in humidity, reaching 90%. The rainfall in September is much heavier at 240 mm (9.4 in), occurring over 25 days, indicating a wetter and more humid environment. For more detailed information, you can check Siem Reap weather in September.
April and October present contrasting weather patterns. April typically sees warmer temperatures, with a minimum of 20°C (68°F) and averages around 30°C (87°F), peaking at 39°C (102°F). However, it also experiences some rainfall, averaging 86 mm (3.4 in) over 14 days, and a moderate humidity level of 55%. In contrast, October features slightly cooler temperatures with a minimum of 22°C (72°F) and an average of 28°C (83°F), peaking at 34°C (93°F). It is considerably wetter, receiving 238 mm (9.4 in) of rainfall over 22 days, and has higher humidity at 85%. For more details about the climate in October, you can check out Siem Reap weather in October.
April and November present contrasting weather patterns. In April, temperatures are notably higher, with averages around 30°C (87°F) and maximums soaring to 39°C (102°F), while November's temperatures are milder, averaging 27°C (82°F) and peaking at 34°C (94°F). Precipitation levels are somewhat similar, with April receiving 86 mm (3.4 in) over 14 days and November slightly less at 78 mm (3.1 in) across 13 days. Additionally, humidity is markedly higher in November at 79% compared to April's 55%, contributing to a more oppressive atmosphere. For more details, check out Siem Reap weather in November.
April and December present contrasting weather patterns. In April, temperatures can soar as high as 39°C (102°F), with an average of 30°C (87°F), making it one of the hottest months. The humidity sits at a moderate 55%, but with 86 mm (3.4 in) of precipitation over 14 days, the month tends to be quite wet. In contrast, December brings cooler temperatures, with a maximum of 34°C (94°F) and an average of 26°C (80°F). The month is much drier, receiving only 23 mm (0.9 in) of rain over just 5 days, yet it features higher humidity at 68%. For more insights into the weather conditions of December, visit Siem Reap weather in December.
April in Siem Reap showcases an intense transition towards the hot season, characterized by high temperatures and greater humidity compared to other months. As the mercury frequently peaks around 39°C (102°F), visitors can expect a mix of sweltering days and occasional, albeit brief, rain showers—averaging around 86 mm across approximately 14 days. While this month can be challenging due to the heat, it also means the lush landscapes of Siem Reap are bursting with life, making it a vibrant time for exploration. For a deeper understanding of what to anticipate throughout the year, check out Siem Reap Climate.