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Best time to visit Siem Reap, Cambodia

Our verdict

The best time to visit Siem Reap is November

If you’re looking to travel to Siem Reap for your next trip but aren’t sure when to go and when to avoid, this article is all you’ll need. The best time to visit Siem Reap is November due to the excellent all-round weather conditions, and it’s also not during the height of peak travel periods, so it’s not likely to be as busy.

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!

Warmest month

April

Least rainfall

January

Most daylight

April

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Siem Reap

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:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

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
25 days
of pure sunshine
5 days
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.


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
22 days
of pure sunshine
6 days
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.


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
15 days
of pure sunshine
15 days
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.


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
7 days
of pure sunshine
22 days
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.


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
3 days
of pure sunshine
27 days
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.


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
3 days
of pure sunshine
27 days
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.


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
2 days
of pure sunshine
29 days
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.


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
2 days
of pure sunshine
29 days
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.


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
0 days
of pure sunshine
29 days
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
3 days
of pure sunshine
27 days
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.


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
12 days
of pure sunshine
16 days
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.


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
23 days
of pure sunshine
7 days
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.


Top FAQs

The hottest month of the year in Siem Reap is usually April, where temperatures tend to rise to around 36℃ (96℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Siem Reap is generally around January. The dry season often coincides with cooler weather, so you should check the temperatures in January first to make sure it’s still a good time to go.
The rainiest time of year in Siem Reap is generally around September, although the wetter season can sometimes extend a few months either side of September too.
If you want to get the most out of your time visiting Siem Reap, or if you're just afraid of the dark, the days in April are usually the longest between sunrise and sunset.

Siem Reap map

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