Our verdict
The best time to visit Siem Reap is November
In summer, temperatures can reach as high as 37℃ (99℉) in the middle of the day. In the winter months, it can get down to as low as 19℃ (66℉) at night.
The sun stays up the longest in Siem Reap in April, so you’ll get the most out of your daytime activities if you visit around this time. On average it rains the most days in September, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.
To learn everything you need to know (and none of the stuff you don’t) about when to visit Siem Reap, keep reading below. Plus, you’ll find tools to help you get the best deals on travel and hotels too!
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Siem Reap seasons
Before you continue, it’s important to know when the seasons are in Siem Reap as they might be different to yours depending on where in the world you’re travelling from. Siem Reap is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Siem Reap
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Siem Reap for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Siem Reap climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Siem Reap for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Siem Reap in January
- Average temperature: 26℃ (79℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 22℃ (71℉)
- Average humidity: 60%
- Average sunny days: 25 days
- Average rainfall: 10mm (0") over 5 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in January, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.
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Siem Reap in February
- Average temperature: 28℃ (83℉)
- Average high temperature: 34℃ (93℉)
- Average low temperature: 23℃ (74℉)
- Average humidity: 55%
- Average sunny days: 22 days
- Average rainfall: 13mm (1") over 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in February, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siem Reap in March
- Average temperature: 30℃ (87℉)
- Average high temperature: 36℃ (96℉)
- Average low temperature: 26℃ (78℉)
- Average humidity: 58%
- Average sunny days: 15 days
- Average rainfall: 43mm (2") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in March, make sure you pack t-shirts, shorts and sun protection.
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Siem Reap in April
- Average temperature: 31℃ (87℉)
- Average high temperature: 35℃ (96℉)
- Average low temperature: 27℃ (80℉)
- Average humidity: 64%
- Average sunny days: 7 days
- Average rainfall: 101mm (4") over 22 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in April, make sure you pack t-shirts, shorts and sun protection.
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Siem Reap in May
- Average temperature: 30℃ (87℉)
- Average high temperature: 35℃ (94℉)
- Average low temperature: 27℃ (80℉)
- Average humidity: 71%
- Average sunny days: 3 days
- Average rainfall: 139mm (5") over 27 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in May, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siem Reap in June
- Average temperature: 29℃ (84℉)
- Average high temperature: 33℃ (91℉)
- Average low temperature: 26℃ (78℉)
- Average humidity: 76%
- Average sunny days: 3 days
- Average rainfall: 153mm (6") over 27 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in June, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siem Reap in July
- Average temperature: 28℃ (82℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 80%
- Average sunny days: 2 days
- Average rainfall: 170mm (7") over 29 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in July, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siem Reap in August
- Average temperature: 28℃ (82℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 80%
- Average sunny days: 2 days
- Average rainfall: 194mm (8") over 29 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in August, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siem Reap in September
- Average temperature: 28℃ (82℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 82%
- Average sunny days: 0 days
- Average rainfall: 257mm (10") over 29 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in September, make sure you pack t-shirts and shorts.. It stays warm all day and night.
Siem Reap in October
- Average temperature: 28℃ (82℉)
- Average high temperature: 31℃ (89℉)
- Average low temperature: 25℃ (76℉)
- Average humidity: 79%
- Average sunny days: 3 days
- Average rainfall: 196mm (8") over 27 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in October, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siem Reap in November
- Average temperature: 27℃ (81℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 23℃ (74℉)
- Average humidity: 74%
- Average sunny days: 12 days
- Average rainfall: 62mm (2") over 16 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in November, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siem Reap in December
- Average temperature: 26℃ (78℉)
- Average high temperature: 31℃ (87℉)
- Average low temperature: 22℃ (71℉)
- Average humidity: 67%
- Average sunny days: 23 days
- Average rainfall: 14mm (1") over 7 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siem Reap in December, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.
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