Siem Reap Weather

Featuring typical tropical climate, Siem Reap in Cambodia remains hot throughout the year, with the average temperatures hovering between 25-31℃ (77-88℉). Siem Reap has two distinct seasons: the dry season and the rainy season. The hottest time in Siem Reap generally takes place in transition months from the dry season to the rainy season, in April or May, when the average high temperature hovers around 35℃ (95℉) and sometimes can rise over 39℃ (102℉). The most comfortable months fall in the dry season, generally from October to early March, when is also the busy travel season of Siem Reap. Most rainfall of the year happens in the rainy season between May and October. High temperature and high humidity make Siem Reap hot, sultry and wet from May to August. September and October are a little cooler. In general, the rainy season coincides with the city's low travel season.           
 

Generally, mid-November to early March is considered the best time to visit Siem Reap, as far as the fine weather is concerned. During the period, the temperature is not so high, ranging between 24-32°C (75-90℉) and it hardly rains. The pleasant climate and sunny weather make the largest draw of Siem Reap, the Angkor Wat, just full of visitors. If you are fond of a less hectic travel experience and don’t mind rainy weather, then September and October are ideal times to avoid crowds and enjoy price discounts.

Siem Reap is characterized by two seasons. The dry season lasts for about half of a year from November to next April while the rainy season starts in May and ends in October.     

Siem Reap’s dry season from November to April is generally sunny and dry. The humidity is typically below 70%. There is a little rain and the monthly precipitation is generally below 55mm. With the relatively low humidity, rainless weather and moderate temperature, Siem Reap receives lots of tourists from all over the world, especially during the time from November to early March. April is one of the hottest months of the year, with the temperature ranging between 27-35℃ (81-95℉) and the highest temperature sometimes soaring to over 39℃(102℉); tourists also become thin on the ground since then.  

Siem Reap has much rainfall in rainy season and the rainy days are as most as 15 to 22 days each month. With the monthly precipitation averaging between 180-260mm, the humidity during the period also increases a little, to over 70%. The temperature in the rainy season generally ranges between 25-32℃ (77-90℉). In the first two months of the rainy season, May and June have pretty high temperature of around 34℃ (93℉). Also because of the high humidity, the weather is hot and sultry. Accordingly, it is the low travel season and the good time to enjoy a leisurely Siem Reap trip. Thanks to fewer tourists, it is possible for you to capture the most fantastic pictures of the spectacular Angkor Wat complex.