Last updated: August 21, 2025
January in Siem Reap, Cambodia, offers a delightful escape with its warm temperatures and low humidity. This month typically sees maximum temperatures soaring to 35°C (95°F), while the average hovers around a comfortable 27°C (81°F). Visitors can expect a mild minimum temperature of 15°C (59°F) during the cooler nights. With only 11 mm (0.4 in) of precipitation across just 2 days, January is ideal for exploring Siem Reap’s stunning temples and rich culture. Enjoy the pleasant 55% humidity that enhances the overall experience in this enchanting destination.
In January, Siem Reap, Cambodia, welcomes the new year with a comfortable climate, featuring a minimum temperature of 15°C (59°F) that gradually warms to an average of 27°C (81°F), peaking at a toasty 35°C (95°F). As the month progresses, temperatures rise slightly, hinting at the hot season ahead. By February, lows increase to 17°C (63°F) and average highs reach 36°C (97°F), showcasing a steady upward trend. This pattern continues into March and April, where maximum temperatures soar to 37°C (99°F) and a sizzling 39°C (102°F), respectively. Even as temperatures remain consistent throughout the following months, the cozy appeal of early January's mildness quickly gives way to the heat of mid-year, emphasizing the stark transition from cool mornings to scorching afternoons that characterize Siem Reap's tropical climate.
In January, Siem Reap experiences a comparatively dry start to the year, with only 11 mm (0.4 in) of precipitation falling over just 2 days. This gentle beginning contrasts sharply with the upcoming months, as rainfall begins to intensify, particularly in March when totals leap to 40 mm (1.6 in) across 6 days, setting the stage for the heavier rains of the wet season that follows. By the time April arrives, the annual shift becomes evident with precipitation jumping to 86 mm (3.4 in) over 14 days, and the subsequent months show a clear trend of rising rainfall amounts and frequency, peaking in September with 240 mm (9.4 in) over 25 days. This seasonal transition highlights how January represents a tranquil interlude before the lush, verdant landscapes emerge from the tropical rains that define the region later in the year.
In January, Siem Reap enjoys a comfortable humidity level of 55%, providing a pleasant atmosphere ideal for exploring the city's ancient temples and lush landscapes. As the month progresses, humidity gradually decreases to 50% in February and continues to decline, reaching its lowest at 47% by March. However, the approach of the hot season sees a notable shift, with humidity rising back to 55% in April. The real humid summer begins in May, escalating sharply to a steamy 78% in preparation for the rains that follow. From June through September, humidity peaks, consistently hovering around 90%, creating a tropical sensation that persists until the end of the monsoon season. As the year winds down, humidity levels gently taper off, settling at 68% in December, still reminiscent of the hot, humid climate that characterizes Siem Reap throughout the year. This cyclical dance of humidity ensures that every visit offers a unique blend of experiences, from the cooler dry season to the lush green landscapes of the wet months.
In January, Siem Reap, Cambodia, experiences a UV Index of 10, classified under the very high exposure category, allowing for a burn time of just 15 minutes. This marks the beginning of a trend toward higher UV levels, as the following months see a sharp increase, with the index peaking at 15 in March. From February through October, the UV Index remains in the extreme category, frequently hitting levels of 13 to 14, resulting in a notably reduced burn time of only 10 minutes. As the year progresses, the UV exposure begins to taper off slightly, returning to a very high level of 10 in December. It's crucial for visitors and residents alike to stay informed and protect their skin during these intense periods of UV radiation. For more information on managing UV exposure, check out Siem Reap UV Index.
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In January, Siem Reap basks in an impressive 260 hours of sunshine, setting the tone for a vibrant start to the year. This sunny trend continues to rise, reaching 300 hours in February and peaking at 326 hours in March, where it truly shines. As spring approaches, the sun remains generous, with sunshine hours remaining robust at 309 and 317 hours in April and May, respectively. Even as the region transitions into the rainy season, Siem Reap enjoys a comfortable level of sunlight, maintaining around 300 hours throughout the summer months. However, the days gradually begin to shorten, dipping to 272 hours by September but bouncing back slightly to 299 hours in November. The trend clearly indicates that January marks the beginning of a bright and sunlit journey through the year in this enchanting Cambodian destination.
The likelihood of sunny weather in Siem Reap, Cambodia during January stands at 49%, making it a relatively bright month compared to the wetter seasons that follow. As the year progresses into February, the chances of sunshine notably increase to 75%, marking it as the sunniest month. However, this trend doesn’t last, as March sees a decline to 62%, before plunging into a more overcast April and May, where the likelihood drops to just 31% and 30%, respectively. The monsoon season that follows is characterized by significantly lower chances of sun, with August and September experiencing their bleakest days at a mere 8%. This pattern underscores January as a transitional month, hinting at brighter days ahead, offering travelers a perfect opportunity to enjoy Siem Reap’s rich culture and iconic temples before the rain takes hold.
In Siem Reap, Cambodia, January marks the transition into a bright year, offering 11 hours of daylight that remain consistent through February. As nature begins to awaken, March heralds an increase to 12 hours, a pattern that continues through the following months, reaching its zenith during the long and inviting days of April to August. This delightful duration remains steady at 12 hours, perfect for exploring the region's rich cultural heritage and natural beauty. As the year progresses, daylight gradually wanes, returning to 11 hours by October and tapering off through November and December. This illuminating cycle highlights the rhythmic reliability of Siem Reap’s daylight, inviting visitors to enjoy its splendor throughout the year.
In January, Siem Reap enjoys a gentle breeze with an average wind speed of 2.5 m/s (6 mph), setting a pleasant tone for those exploring the ancient temples and vibrant markets. As the month transitions into February and March, the wind slightly eases, dipping to 2.3 m/s (5 mph), creating a calm atmosphere perfect for leisurely strolls. However, as April approaches, the winds continue to soften, reaching a low of 2.1 m/s (5 mph), coinciding with the heat of the dry season. Interestingly, the summer months bring a refreshing shift, with wind speeds increasing to 3.3 m/s (7 mph) in June, before moderately tapering off again during the subsequent months. Overall, January serves as a delightful kickoff to the year, where a mild breeze invites both adventure and relaxation in this enchanting Cambodian destination.
Weather in Siem Reap varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Siem Reap, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, February experiences slightly warmer temperatures, with minimums reaching 17°C (63°F) and maximums peaking at 36°C (97°F), compared to January's 15°C (59°F) and 35°C (95°F). The average temperature also rises marginally from 27°C (81°F) in January to 28°C (82°F) in February. Both months see limited precipitation, with February receiving 9 mm (0.3 in) over two days, a bit less than January's 11 mm (0.4 in) under similar conditions. Additionally, humidity decreases slightly from 55% in January to 50% in February, making the latter month feel a touch drier. For detailed insights, check out Siem Reap weather in February.
In January, the weather is generally milder, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F), averaging around 27°C (81°F). The month experiences limited precipitation of 11 mm (0.4 in) over just 2 days, and humidity is relatively comfortable at 55%. In contrast, March introduces warmer temperatures, with a minimum of 22°C (72°F), an average of 30°C (86°F), and a maximum reaching 37°C (99°F). This month also sees increased rainfall at 40 mm (1.6 in) over 6 days, although the humidity drops slightly to 47%. For a closer look at what to expect, check out Siem Reap weather in March.
In comparing the weather between January and April, it is evident that April brings warmer temperatures and significantly higher precipitation. January features a milder temperature range, with a minimum of 15°C (59°F) and a maximum of 35°C (95°F), along with only 11 mm (0.4 in) of rain over just 2 days. In contrast, April's temperatures are notably hotter, with a minimum of 20°C (68°F) and a maximum hitting 39°C (102°F). Additionally, April experiences substantial rainfall, totaling 86 mm (3.4 in) over 14 days, while maintaining the same humidity level of 55%. For more details on the weather conditions during this month, you can check out Siem Reap weather in April.
In January, the weather features a more moderate climate with temperatures ranging from a comfortable 15°C (59°F) to a warm 35°C (95°F), accompanied by low precipitation of just 11 mm (0.4 in) over two days and humidity around 55%. In contrast, May experiences significantly higher temperatures, with a minimum of 22°C (72°F) and a maximum reaching 39°C (103°F). This month also sees a dramatic increase in rainfall, totaling 141 mm (5.6 in) across 20 days and higher humidity levels of 78%. For more detailed insights, you can check the Siem Reap weather in May.
In January, Siem Reap experiences milder weather with minimum temperatures around 15°C (59°F) and maximums reaching up to 35°C (95°F), averaging at 27°C (81°F). The month is relatively dry, with only 11 mm (0.4 in) of precipitation over just 2 days and a humidity level of 55%. In contrast, June sees significantly warmer temperatures, with minimums of 26°C (79°F), averages of 30°C (86°F), and maximums soaring to 38°C (100°F). This month is characterized by heavy rainfall, totaling 117 mm (4.6 in) across 21 days, and much higher humidity at 86%. For a more detailed outlook on the weather in June, you can visit Siem Reap weather in June.
In January, the weather is generally warm with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F), averaging around 27°C (81°F). This month sees relatively low precipitation, with only about 11 mm (0.4 in) over a couple of days, along with humidity levels around 55%. In contrast, July is significantly hotter and more humid, with temperatures ranging from a minimum of 25°C (77°F) to a peak of 38°C (101°F), averaging 29°C (85°F). Rainfall increases dramatically to 145 mm (5.7 in) over 23 days, resulting in a much higher humidity level of 88%. For more details, check out Siem Reap weather in July.
In January, the weather is relatively mild, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F) and an average of 27°C (81°F). The month sees minimal precipitation, with only 11 mm (0.4 in) of rain over just 2 days, and humidity levels around 55%. In contrast, August experiences much warmer temperatures, with a minimum of 25°C (77°F) and a high of 37°C (99°F), averaging 29°C (85°F). This month is characterized by heavy rainfall, totaling 152 mm (6.0 in) over 23 days, and significantly higher humidity at 90%. For more details, you can check Siem Reap weather in August.
In January, the weather in Siem Reap is characterized by relatively warm and dry conditions, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F). The average temperature hovers around 27°C (81°F), and the region experiences only 11 mm (0.4 in) of precipitation over just 2 days, leading to a comfortable humidity level of 55%.
Conversely, September sees a significant shift. The minimum temperature rises to 24°C (76°F), while the maximum can reach 35°C (96°F), resulting in an average temperature of 28°C (84°F). However, this month is much wetter, with precipitation surging to 240 mm (9.4 in) over 25 days and humidity levels climbing to 90%. This stark contrast highlights the seasonal variations in Siem Reap's climate throughout the year. For more details on September weather, visit Siem Reap weather in September.
When comparing the weather between January and October, we see significant differences in both temperatures and precipitation. In January, temperatures range from a pleasant minimum of 15°C (59°F) to a maximum of 35°C (95°F), with an average temperature of 27°C (81°F). The month experiences minimal precipitation, only about 11 mm (0.4 in) over just 2 days, and humidity sits at a comfortable 55%.
In contrast, October is markedly wetter and more humid. It boasts a higher minimum temperature of 22°C (72°F) and maintains an average of 28°C (83°F), peaking at around 34°C (93°F). However, it sees substantial rainfall, with precipitation reaching 238 mm (9.4 in) across 22 days, and humidity soaring to 85%. For more details, you can check Siem Reap weather in October.
January's weather is characterized by warmer temperatures, with a minimum of 15°C (59°F) and an average high of 35°C (95°F), while November sees a slightly higher minimum of 21°C (71°F) and an average high of 34°C (94°F). In terms of precipitation, January is relatively dry, receiving only 11 mm (0.4 in) over just two days, whereas November experiences significantly more rainfall, accumulating 78 mm (3.1 in) over 13 days. This increased rainfall also contributes to a higher humidity level of 79% in November compared to January's 55%. For more details on November weather, you can visit Siem Reap weather in November.
In January, the weather in Siem Reap tends to be slightly warmer, with average temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F). This month typically sees only 11 mm (0.4 in) of precipitation over just 2 days, resulting in a lower humidity level at 55%. In contrast, December experiences slightly cooler temperatures, with an average ranging from 16°C (61°F) to a maximum of 34°C (94°F). December also brings more rainfall, totaling 23 mm (0.9 in) over 5 days, leading to a higher humidity level of 68%. For more details, check out Siem Reap weather in December.
In January, Siem Reap experiences some of its most delightful weather, making it a prime time for visitors to explore the stunning temples and vibrant culture. Compared to the hotter and more humid months that follow, January boasts a more comfortable average temperature of around 27°C (81°F), allowing for enjoyable outdoor activities. With only minimal rainfall and low humidity, the typically clear skies create the perfect backdrop for your adventures. Embrace the charm of Siem Reap this month and enjoy the pleasant conditions that set it apart from the rest of the year. For more information about the climate, check out Siem Reap Climate.