About Sam Phan Bok
The "Grand Canyon of Thailand": the largest rock reef in the Mekong, in Ubon Ratchathani, with more than 3,000 potholes and basins carved by the river. It is only visible in the dry season, when the water level drops.
Highlights
- 3,000 river-carved potholes
- Dry season only
- Mekong views to Laos
When to visit Sam Phan Bok
Month by month: good, OK or less good, based on average rain and temperature (Buriram climate).
Best months: January, February, November, December.
- January Dry: about 8 mm on 1 rain days, max 31°C (Buri Ram climate)
- February Dry: about 10 mm on 2 rain days, max 34°C (Buri Ram climate)
- March Dry but very hot: about 56 mm on 5 rain days, max 36°C (Buri Ram climate)
- April Some rain: about 81 mm on 8 rain days, max 37°C (Buri Ram climate)
- May Rainy season: about 203 mm on 15 rain days, max 35°C (Buri Ram climate)
- June Rainy season: about 198 mm on 14 rain days, max 34°C (Buri Ram climate)
- July Rainy season: about 224 mm on 16 rain days, max 33°C (Buri Ram climate)
- August Rainy season: about 254 mm on 18 rain days, max 33°C (Buri Ram climate)
- September Rainy season: about 302 mm on 22 rain days, max 32°C (Buri Ram climate)
- October Some rain: about 107 mm on 14 rain days, max 31°C (Buri Ram climate)
- November Dry: about 30 mm on 4 rain days, max 31°C (Buri Ram climate)
- December Dry: about 13 mm on 1 rain days, max 30°C (Buri Ram climate)
Source: climate figures from our weather page: Weather and climate.
Practical information
- Location
- Ubon Ratchathani · 15.79300, 105.39900
- Type
- 🌿 Nature
- Best time of day
- Late afternoon and sunset
Opening hours and entry fee: no reliable source found, so not listed. Ask on site or check the official website.
More photos of Sam Phan Bok
Sam Phan Bok (2) Photo: Charin ninsu · CC BY 3.0 · Wikimedia Commons 
Sam Phan Bok (3) Photo: Charin ninsu · CC BY 3.0 · Wikimedia Commons 
Sam Phan Bok (4) Photo: Charin ninsu · CC BY 3.0 · Wikimedia Commons
Sam Phan Bok on the map
Pinch to zoom; tap a point for more info. Open circles: approximate location.
More great places nearby
- Pha Taem National Park 45 km as the crow flies
- 💎 Glowing Temple (Wat Sirindhorn Wararam Phu Prao) 72 km as the crow flies
- 💎 Indochina Market, Mukdahan 110 km as the crow flies
- Wat Phra That Phanom 147 km as the crow flies
- 💎 Temple of a Million Bottles (Wat Pa Maha Chedi Kaew) 168 km as the crow flies
- Ban Ta Klang Elephant Village 212 km as the crow flies