Tuol Sleng Genocide Museum ទួលស្លែង

The Tuol Sleng Genocide Museum is a museum and former prison located in Phnom Penh, Cambodia. Established in 1980, it serves as a site of historical documentation. It ranks as the second most looked-up sight in the country on English Wikipedia.
Planning a visit
The site is open daily from 08:00 to 17:00. Admission is 5 dollars, with an additional 5 dollars for an audio or guided tour. Wheelchair access is limited. The museum is located in the city of Phnom Penh, 2 kilometers from the city center. The nearest airport is Techo International Airport, located 21 kilometers away. For drier weather, consider visiting between December and February, when monthly rainfall is lowest. From March to May, temperatures rise to highs of 35 °C, while the rainy season from June to October sees significant precipitation, with up to 23 rainy days in October.
Visitors often combine a trip here with other locations in Phnom Penh, such as the Royal Palace of Cambodia, which is 2.1 kilometers away, or Wat Phnom, located 3 kilometers away. The Choeung Ek site is also nearby, situated 7.4 kilometers from the museum.
Weather by month
The warmest month is April, with an average high of 35 °C. The wettest is September, with about 256 mm of rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 32 | 33 | 34 | 35 | 34 | 33 | 32 | 32 | 31 | 31 | 30 | 30 |
| Average low, °C | 22 | 23 | 25 | 26 | 26 | 25 | 25 | 25 | 24 | 24 | 23 | 22 |
| Rainfall, mm | 10 | 4 | 35 | 74 | 120 | 150 | 165 | 199 | 256 | 252 | 113 | 22 |
| Rainy days | 4 | 3 | 6 | 11 | 18 | 20 | 22 | 19 | 22 | 23 | 15 | 6 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.