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Tonle Sap Lake

Lake · 🇰🇭 Cambodia
Area 2,448 km²
Time zone Asia/Phnom_Penh
Tonle Sap Lake

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Deror_avi / CC BY-SA 3.0

Tonle Sap Lake Essentials

Tonle Sap Lake is Southeast Asia's largest freshwater lake and a UNESCO Biosphere Reserve. This collection highlights its seasonal ecosystem, including the 9th-century Hindu ruins of Phnom Krom and the Prek Toal Bird Sanctuary, a critical breeding ground for rare storks and pelicans. The list features floating communities like Chong Kneas and the dense flooded forests near Kampong Phluk. During the monsoon, the lake expands six-fold, reversing the Tonle Sap River's flow and creating a unique landscape of submerged trees and stilted villages.

7 places
Remi Jouan / CC BY-SA 3.0

Buddhist Heritage

This collection explores the religious evolution of the Tonle Sap region, from the 11th-century ruins of Prasat Vat Athvea to the vibrant urban compounds of Wat Bo and Preah Prom Rath. These sites feature traditional Khmer architecture, characterized by tiered roofs, intricate bas-reliefs, and ornate pagodas. The selection includes hilltop sanctuaries like Phnom Krom and quiet village places of worship that serve as central hubs for local Buddhist communities near the shores of the lake.

8 places

Tonle Sap Lake — Map

Tonle Sap Lake — Map

Climate & when to visit

Select a month

Typical weather in January

Good
  • 30° (feels like 32°) · extremes 20°–33°
  • 24° at night
  • 3 rainy days
  • 17 sunny days
  • 8 hours of sunshine per day
  • Muggy, humid air
  • Calm winds
  • 28°C · warm for swimming
  • UV index 8 · very high

Typical weather in February

Good
  • 31° (feels like 34°) · extremes 22°–34°
  • 25° at night
  • 6 rainy days
  • 13 sunny days
  • 8 hours of sunshine per day
  • Muggy, humid air
  • Calm winds
  • 29°C · warm for swimming
  • UV index 9 · very high

Typical weather in March

Poor
  • 33° (feels like 36°) · extremes 24°–35°
  • 27° at night
  • 13 rainy days
  • 9 sunny days
  • 7 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 32°C · warm for swimming
  • UV index 9 · very high

Typical weather in April

Poor
  • 33° (feels like 37°) · extremes 25°–36°
  • 27° at night
  • 19 rainy days
  • 6 sunny days
  • 7 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 33°C · warm for swimming
  • UV index 9 · very high

Typical weather in May

Poor
  • 32° (feels like 37°) · extremes 26°–35°
  • 27° at night
  • 25 rainy days
  • 5 sunny days
  • 7 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 32°C · warm for swimming
  • UV index 10 · very high

Typical weather in June

Poor
  • 31° (feels like 35°) · extremes 26°–33°
  • 27° at night
  • 24 rainy days
  • 5 sunny days
  • 7 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 31°C · warm for swimming
  • UV index 9 · very high

Typical weather in July

Poor
  • 31° (feels like 34°) · extremes 26°–33°
  • 27° at night
  • 25 rainy days
  • 4 sunny days
  • 6 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 30°C · warm for swimming
  • UV index 9 · very high

Typical weather in August

Poor
  • 31° (feels like 34°) · extremes 25°–32°
  • 27° at night
  • 26 rainy days
  • 3 sunny days
  • 6 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 30°C · warm for swimming
  • UV index 10 · very high

Typical weather in September

Poor
  • 30° (feels like 34°) · extremes 25°–32°
  • 26° at night
  • 28 rainy days
  • 2 sunny days
  • 5 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 30°C · warm for swimming
  • UV index 9 · very high

Typical weather in October

Poor
  • 30° (feels like 34°) · extremes 24°–31°
  • 25° at night
  • 26 rainy days
  • 5 sunny days
  • 6 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 30°C · warm for swimming
  • UV index 8 · very high

Typical weather in November

Fair
  • 30° (feels like 33°) · extremes 22°–32°
  • 25° at night
  • 14 rainy days
  • 9 sunny days
  • 7 hours of sunshine per day
  • Oppressive humidity
  • Calm winds
  • 29°C · warm for swimming
  • UV index 8 · very high

Typical weather in December

Good
  • 29° (feels like 31°) · extremes 20°–32°
  • 24° at night
  • 5 rainy days
  • 16 sunny days
  • 8 hours of sunshine per day
  • Muggy, humid air
  • Calm winds
  • 27°C · warm for swimming
  • UV index 8 · very high

Climate data: NASA POWER + Copernicus ERA5-Land and ERA5 · 1996–2025

Practical information

Currency
Cambodian Riel KHR ៛ · Card payments · Commonly accepted
Electricity
Type A / Type C / Type G
230 V · 50 Hz
Languages
Khmer
Tap water
Not safe to drink
Driving side
Right
Calling code
+855
Learn more

Tours & Activities

Tonle Sap Lake
Drive
Prek Toal Bird Sanctuary
Drive
Phnom Krom Temple

Tonle Sap Lake – Plan Your Days

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Cambodia

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Data: © OpenStreetMap contributors, Wikidata, Wikipedia, Tripomatic, Official websites.