Pagsum Lake

Lake Scenic high-altitude lake in Tibet

High‑altitude lake in Nyingchi prefecture, Tibet (often called Basum Tso), noted for clear blue water, surrounding pine slopes and nearby Tibetan settlements; visitors take boat trips and day hikes.

Main image

Pagsum Lake, also known as Basum Tso, is a freshwater lake in the Tibet Autonomous Region of China. It is noted for its scenic mountain setting and religious associations.

The lake is ringed by pine-clad slopes and has several small islands that contain temples or shrines, making it both a natural and pilgrimage destination. Boat trips to the islands are a common way for visitors to see the temples and the shoreline.

The lake has long held local religious importance and has been incorporated into Tibetan Buddhist practice through the temples on its islands and the local pilgrimage tradition. It has been visited by pilgrims and travelers for generations.

Situated in the Tibetan highlands, within the administrative area commonly associated with Nyingchi/Bayi, surrounded by forested mountains and alpine valleys.

  • Island temples: The lake contains small wooded islands that host temples and religious structures, and these are commonly reached by boat from the lakeshore.
Pagsum Lake
30.0000, 94.0000

How to Get to Pagsum Lake #

Pagsum Lake is in southeastern Tibet; access typically involves overland travel from Nyingchi or Lhasa depending on itinerary, often via high mountain roads that may require permits. Tours or permits arranged through Tibetan travel services are customary for foreign visitors.

Tips for Visiting Pagsum Lake #

  • Altitude and limited services mean visitors should plan logistics carefully and bring altitude-appropriate gear.
  • Acclimatize in larger towns (e.g., Nyingchi or Lhasa, depending on route) before attempting lake treks.
  • Hire local guides - they know seasonal road conditions and can arrange permits where necessary.

Best Time to Visit Pagsum Lake #

Late spring through early autumn for best access and road conditions; watch altitude considerations.

Summer
June-August · 5-15°C
Milder temperatures and open roads; flowering meadows in lower altitudes.
Spring/Autumn
April-May / September-October · -2-12°C
Clear skies and good visibility; nights are cold and weather can change quickly.
Winter
November-March · -15-0°C
Severe cold and many high passes closed by snow; limited access.

Weather & Climate near Pagsum Lake #

Climate

Pagsum Lake's climate is classified as Subarctic (Dry Winter) - Subarctic (Dry Winter) climate with cool summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -12°C to 16°C. Moderate rainfall (591 mm/year) with a pronounced dry season.

Best Time to Visit
OctoberNovemberDecember
Temperature & Rainfall
Temperature Range
19°
Warmest Month
-24°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of 0°C and lows of -12°C. The driest month with just 3 mm and partly cloudy skies.

58 Acceptable

Comfort

-6°
Feels Like Freezing
-6°C
Temperature
-12°
54%
Humidity
Humid

Weather

3 mm
Rainfall
2.3 m/s
Wind
Calm
1.2
UV Index
High
10.4h daylight

February

February is freezing with highs of 1°C and lows of -9°C. Almost no rain and partly cloudy skies.

55 Acceptable

Comfort

-4°
Feels Like Freezing
-4°C
Temperature
-9°
54%
Humidity
Humid

Weather

5 mm
Rainfall
2.6 m/s
Wind
Calm
1.8
UV Index
Very High
11.0h daylight

March

March is freezing with highs of 5°C and lows of -6°C. Light rainfall and mostly overcast skies.

51 Acceptable

Comfort

Feels Like Freezing
C
Temperature
-6°
56%
Humidity
Humid

Weather

13 mm
Rainfall
2.5 m/s
Wind
Calm
2.7
UV Index
Extreme
11.9h daylight

April

April is cold with highs of 8°C and lows of -2°C. Moderate rainfall (33 mm) and mostly overcast skies.

55 Acceptable

Comfort

Feels Like Cold
C
Temperature
-2°
61%
Humidity
Humid

Weather

33 mm
Rainfall
2.5 m/s
Wind
Calm
2.6
UV Index
Extreme
12.8h daylight

May

May is cold with highs of 12°C and lows of 2°C. Moderate rainfall (64 mm) and mostly overcast skies.

51 Acceptable

Comfort

Feels Like Cold
C
Temperature
12°
67%
Humidity
Humid

Weather

64 mm
Rainfall
2.3 m/s
Wind
Calm
2.7
UV Index
Extreme
13.5h daylight

June

June is cool with highs of 15°C and lows of 5°C. Significant rainfall (112 mm) and mostly overcast skies.

57 Acceptable

Comfort

10°
Feels Like Cool
10°C
Temperature
15°
74%
Humidity
Very Humid

Weather

112 mm
Rainfall
2.3 m/s
Wind
Calm
2.8
UV Index
Extreme
13.9h daylight

July

July is cool with highs of 16°C and lows of 7°C. The wettest month with heavy rain (126 mm) and mostly overcast skies.

55 Acceptable

Comfort

12°
Feels Like Cool
12°C
Temperature
16°
79%
Humidity
Very Humid

Weather

126 mm
Rainfall
1.8 m/s
Wind
Calm
3.0
UV Index
Extreme
13.7h daylight

August

August is cool with highs of 16°C and lows of 6°C. Significant rainfall (102 mm) and mostly overcast skies.

57 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
16°
79%
Humidity
Very Humid

Weather

102 mm
Rainfall
1.9 m/s
Wind
Calm
2.8
UV Index
Extreme
13.1h daylight

September

September is cold with highs of 14°C and lows of 4°C. Regular rainfall (94 mm) and mostly overcast skies.

49 Poor

Comfort

Feels Like Cold
C
Temperature
14°
79%
Humidity
Very Humid

Weather

94 mm
Rainfall
2.0 m/s
Wind
Calm
2.3
UV Index
Extreme
12.2h daylight

October

October is cold with highs of 10°C and lows of 0°C. Moderate rainfall (30 mm) and partly cloudy skies.

61 Good

Comfort

Feels Like Cold
C
Temperature
10°
74%
Humidity
Very Humid

Weather

30 mm
Rainfall
1.7 m/s
Wind
Calm
2.0
UV Index
Very High
11.3h daylight

November

November is freezing with highs of 5°C and lows of -6°C. Almost no rain.

61 Good

Comfort

Feels Like Freezing
C
Temperature
-6°
60%
Humidity
Humid

Weather

6 mm
Rainfall
1.8 m/s
Wind
Calm
1.4
UV Index
High
10.6h daylight

December

December is freezing with highs of 2°C and lows of -10°C. The driest month with just 3 mm.

61 Good

Comfort

-4°
Feels Like Freezing
-4°C
Temperature
-10°
53%
Humidity
Humid

Weather

3 mm
Rainfall
2.0 m/s
Wind
Calm
1.1
UV Index
High
10.2h daylight

Nearby Attractions to Pagsum Lake