Travelers visiting Siem Reap in September have a special reason to visit Angkor Wat. The Angkor Wat Equinox will take place from September 21 to 23, 2026, when the rising sun appears aligned with the central tower of the famous temple.
The phenomenon happens twice a year, around the March and September equinoxes, and attracts both Cambodian and international visitors to Angkor Wat. This September, Siem Reap is also preparing for the first Equinox Angkor Run on September 21, adding another major event to an already busy period.
When Is the Angkor Wat Equinox in 2026?
The official Cambodia Tourism Board lists the Angkor Wat Equinox for September 21–23, 2026.
The September event is the autumnal equinox period. During these mornings, the sun rises behind the central tower of Angkor Wat, creating the distinctive alignment that makes the event especially popular with photographers and visitors.
The exact visual conditions can vary from morning to morning, particularly because September falls during Cambodia’s green season and clouds or rain can affect the sunrise.
What Happens During the Angkor Wat Equinox?
The Angkor equinox is a natural solar phenomenon connected with the orientation of Angkor Wat.
As the sun rises, it appears above the temple’s central tower, creating a striking composition that can be seen from the western side of the temple complex.
The phenomenon occurs twice each year. The first occurs around March 21–23, while the second occurs around September 21–23.
It is not a separate temple ceremony or ticketed festival. Rather, it is a special sunrise phenomenon that visitors can experience while visiting Angkor Wat.
What Time Should You Arrive?
If you want to watch the equinox sunrise, plan to arrive at Angkor Wat well before sunrise.
The sunrise itself occurs shortly before 6:00 a.m. in Siem Reap during September, but you should allow additional time for transportation, entering the Angkor area, walking to the viewing position and finding a suitable place before the main crowd arrives.
The March equinox demonstrated how popular the phenomenon can be, with large numbers of domestic and international tourists gathering at Angkor Wat before sunrise.
Our Angkor Wat sunrise guide has more practical information about where to stand and how to plan an early-morning visit.
Will Angkor Wat Be Crowded?
You should expect more visitors than on an ordinary morning.
The equinox is one of the more unusual sunrise experiences at Angkor Wat, and previous equinox events have attracted large crowds. Cambodian authorities are also expecting a significant number of visitors to Siem Reap during the September event.
That means travelers should not assume that September’s generally quieter green season will make the equinox sunrise a quiet experience.
If you want a good viewing position, arriving early is one of the most important things you can do.
Equinox Angkor Run on September 21
There is another event to be aware of if you are visiting Siem Reap during the equinox.
The Equinox Angkor Run is scheduled for the morning of September 21, 2026. According to local authorities, participants are expected to gather at the Preah Reach Damnak Stone Bridge at approximately 4:30 a.m. before heading toward the Angkor area.
Authorities expect the event to attract approximately 5,000 to 10,000 participants and visitors.
The event combines sport, tourism and cultural heritage and is intended to promote Siem Reap during the green season.
If you are staying in central Siem Reap on September 21, allow additional time for your early-morning transportation because the event may increase activity around the city and Angkor area.
Which Day Should You Choose?
The equinox period runs from September 21 through September 23, giving travelers several mornings to try to see the phenomenon.
If your schedule is flexible, having more than one morning available gives you a better chance of getting favorable weather and sunrise conditions.
This can be particularly useful in September, when cloud cover and rainfall can change quickly.
If you are planning a longer visit, our Siem Reap 4-day itinerary can help you build the equinox into a broader temple and city itinerary.
What Should You Bring?
An equinox sunrise requires an earlier start than a normal sightseeing day, so prepare accordingly.
- Comfortable walking shoes
- Light clothing suitable for Cambodia’s warm climate
- Water
- Phone or camera with sufficient battery
- Power bank if you plan to photograph the sunrise extensively
- Small rain protection in case of showers
- A light layer if you are sensitive to early-morning temperatures
September is part of Cambodia’s rainy season, so checking the weather forecast before leaving your hotel is particularly useful.
Photographers may also want to read our Angkor Wat photography guide before the visit.
What Else Can You See at Angkor?
The equinox sunrise is only one part of an Angkor visit.
After watching the sunrise, you can continue to other temples in the archaeological park rather than returning immediately to Siem Reap.
Popular choices include Ta Prohm, Bayon and Banteay Srei, although the best combination depends on how much time you have and whether you are visiting Angkor for one, two or several days.
Our guide to Ta Prohm, Bayon and Banteay Srei explains what makes each temple worth visiting.
You can also compare the Small Circuit and Grand Circuit before planning your day.
How Many Days Do You Need in Siem Reap?
If the equinox is the main reason for your visit, staying in Siem Reap for at least two or three nights is useful.
It gives you more than one opportunity to see the sunrise and leaves enough time to explore Angkor and the city itself.
A longer stay also gives you flexibility if rain or cloud cover affects your first attempt.
Travelers with limited time can use our Siem Reap 2-day itinerary or Siem Reap 1-day itinerary.
Where to Stay in Siem Reap for the Equinox
Choosing the right accommodation can make an early-morning Angkor visit much easier.
If you are specifically coming to Siem Reap for the equinox sunrise, consider staying in Siem Reap rather than choosing accommodation far outside the city. A central location gives you easier access to restaurants, transportation and the Angkor area.
Travelers who want to minimize the amount of time spent getting to Angkor can also consider staying near Angkor Wat or choosing a hotel that provides an early-morning shuttle or transportation service.
See our guide to where to stay in Siem Reap to compare the main areas.
If you prefer to stay close to the temples, our guide to luxury resorts near Angkor Wat may also be useful.
For travelers looking for a wider selection, see our guide to the best hotels in Siem Reap.
Do You Need an Angkor Pass?
Yes. Watching the equinox sunrise takes place as part of your visit to Angkor Wat, so you need the appropriate admission ticket for the Angkor Archaeological Park.
Make sure you understand which pass is most suitable for your itinerary before your visit.
Our Angkor Wat 1-day vs 3-day pass guide explains the main options.
If you are planning to spend several days exploring the temples, our 3-day Angkor itinerary can help you organize the visit.
Should You Visit Angkor Wat During the September Equinox?
If you are already planning to visit Siem Reap in September, the equinox is a worthwhile opportunity to experience something unusual at Angkor Wat.
The combination of the sunrise alignment, the green-season landscape and the wider range of activities taking place around Siem Reap makes September 21–23 an interesting period to visit.
However, the event is also likely to attract additional visitors, so it is not the best choice if your priority is having Angkor Wat almost entirely to yourself.
Bottom Line
Angkor Wat Equinox will take place from September 21 to 23, 2026. During the event, the rising sun aligns with the central tower of Angkor Wat, creating one of the temple complex’s most distinctive sunrise views.
Travelers who want to experience it should arrive well before sunrise, expect larger crowds and allow some flexibility for September weather.
The September 21 Equinox Angkor Run will also bring additional activity to Siem Reap, with thousands of participants and visitors expected.
If you are planning to attend, staying in Siem Reap for several nights is the most practical option. It gives you easier access to Angkor, more flexibility around the sunrise and enough time to explore the temples and other attractions in the city.
Sources
- Cambodia Tourism Board — Events & Festivals: confirms Angkor Wat Equinox on September 21–23, 2026, at Angkor Wat, Siem Reap.
- Cambodianess — September Equinox Invites Visitors to Explore Siem Reap: information on the September equinox and Equinox Angkor Run.
- Siem Reap Times — Siem Reap Prepares for Angkor Equinox Tourism Surge With New Running Event: information on the expected visitor numbers and the new running event.
- Mekong Tourism — September 2026 Events: independently lists Angkor Wat Equinox for September 21–23, 2026.