Can Tourism Help Angkor Adapt to a Hotter Climate?

A woman puts her palm flat against the sandstone of Angkor Wat before the sun clears the treeline. The stone is still cool from the night. Around her, a few hundred people stand at the edge of the reflecting pool with their phones up, waiting for the towers to turn from grey to gold. In twenty minutes the air will thicken and shirts will stick. Most of this crowd will be gone by ten.

That early hour has always been the beautiful one. It’s also becoming the practical one. What happens at Angkor between dawn and midday now says a lot about how a nine-hundred-year-old temple city, and the people who live and work around it, are learning to live with heat.

Sunrise at the Temple Walls

The western causeway at sunrise is one of the most photographed places in Southeast Asia.

Angkor wat temple silhouette at sunset over water

Photo by Ahmet Yüksek ✪ on Unsplash

It’s also, increasingly, a scheduling decision. Guides start earlier and finish the outer circuit sooner, because a group standing in full sun at noon on hot laterite stone is a group that stops listening.

Visitors keep coming, and in growing numbers. Angkor Archaeological Park received 1.02 million international visitors in 2024, up 28 percent from 798,069 the year before1. Across Cambodia, 6.7 million international arrivals generated about 3.63 billion US dollars in tourism revenue1.

The pressure and the money arrive together, in the same buses, at the same hour.

Why Angkor Feels the Heat

A climate-risk assessment of Angkor describes what people on the ground already sense: rising temperatures, irregular rainfall, flooding, drought, and wider environmental degradation2.

Detailed close-up of cracked, dried earth depicting drought and climate change effects.

Photo by Engin Akyurt on Pexels

The report treats these as risks not only to the monuments but to the forests, the water systems, the local economy, and community health.

That last part matters more than it sounds. Angkor isn’t a fenced ruin. It’s a working landscape with villages, rice fields, reservoirs, and forest inside its boundaries.

Water is the hinge here. The Khmer builders shaped this place around moving and storing it, and the moats and canals still help hold the ground steady beneath heavy stone. When rainfall swings between too much and too little, that old system gets asked to do a job it wasn’t designed for.

In plain terms: dry ground shifts, saturated ground shifts differently, and the stone above feels both.

Tourism as an Unexpected Ally

Here’s where the visitor with the sweaty shirt enters the story.

A group of people standing outdoors in Phú Yên, Vietnam.

Photo by Long Bà Mùi on Pexels

The same assessment that names the risks also lists adaptation priorities, and they’re unglamorous: better monitoring of monuments, forests, and water systems, reservoir monitoring, and folding climate adaptation into everyday conservation planning2.

None of that is free, and most of it is slow.

One example is the Angkor Water Resilience Project, which is restoring and improving water infrastructure across the park with the APSARA National Authority, the Cambodian body that manages the site3. The stated aim is not only heritage protection but local livelihoods. Elsewhere, Cambodia has launched work to make the tourism sector itself lower-carbon and more inclusive, including solar power and more efficient cooling for tourism businesses4.

Cooling a guesthouse is a small thing. Multiplied across Siem Reap, it becomes infrastructure.

A Cultural Shift Among Visitors

The change in how people travel here is quieter than any restoration crane.

Multi-day passes instead of a single frantic dawn-to-dusk sprint
Early mornings and late afternoons, with the middle of the day given over to shade and rest
Time spent at less crowded temples such as 『Banteay Srei』 or 『Preah Khan』
Money spent with local guides, drivers, and family-run kitchens rather than only at the ticket gate

Each of these spreads foot traffic and spending across more hours, more places, and more households. UNESCO has long encouraged community-based management and sustainable tourism at World Heritage sites in the region. This is what it looks like in practice, one itinerary at a time.

For an ordinary traveller, the kindest choice is often also the more comfortable one.

Voices From the Ground

The people who work here describe adaptation as a habit, not a finish line.

Authentic Japanese temple gate framed by vibrant autumn foliage, showcasing cultural heritage.

Photo by G N on Pexels

Conservation staff check, measure, and check again, especially after an unusually hot or dry season. Guides notice things a visitor can’t: which moat sits lower than last year, which gallery now needs a rest stop.

The Angkor climate-risk assessment lists adaptation priorities including better monitoring of monuments, forests, and water systems. Monitoring sounds like paperwork. In practice it’s the difference between finding a crack early and finding a collapse late.

That cool sandstone under a palm at dawn is more than pleasant. It’s the last of the night held in the stone, and it’s measurable, the kind of thing conservation teams track season after season. The next time you stand there, it might be worth staying for the ordinary hours too: the mid-morning walk to a quieter temple, lunch bought from someone who lives inside the park, the afternoon return when the light goes long and orange. Angkor has survived by being used carefully rather than left alone. A slower visit is a small contribution to that same arrangement, made with your feet and your wallet, at six in the morning.