Climate
 
The topography, geographical location and high altitude create special climate of Tibet. In general, Tibet climate is a little harsh, with thin air, intense ultraviolet radiation, and distinct rainy season and dry season. But the climate is not as harsh as many people imagine it to be.

Tibet Climates are quite different from southeast to northwest and temperatures vary a lot within a day. Summer in Tibet is cool while winter is not very cold owing to the intense sunlight.

Most annual rainfall comes in the rainy season, staring from June to September, when the precipitation covers 90% of the whole year. Usually it rains at night in Lhasa, Shigatse, and Shegar areas.

The best time for traveling to Tibet is from April to October. Though summer is widely regarded as the best time to travel to Tibet, some travelers prefer to travel to Tibet in autumn when the landscape of Tibet is at its most colorful time with clear sky.

The sun in Tibet is extremely strong. It's not for nothing that Lhasa is called the Sunlight City. Because of the thinness of the air, heat and sunlight are not retained, and the temperature can vary very quickly between extremes.

Monthly temperature and precipitation of Tibet 
Month Average High Temperature Average Low Temperature Average Precipitation
January 8 ° C -9° C 0cm
February 10° C -6° C 0cm
March 13° C -2° C 0.3cm
April 17° C 2° C 0.5cm
May 20° C 6° C 3cm
June 24° C 10° C 7.5cm
July 23° C 11° C 12cm
August 22° C 10° C 12cm
September 21° C 9° C 6cm
October 17° C 2° C 1cm
November 12° C -4° C 0.3cm
December 9° C -8° C 0
 
Average Climate of Lhasa/Shigatse/Tsedang/Nyingchi by Month
Month  Lhasa Shigatse Tsedang Nyingchi
High (ºC) Low (ºC) High (ºC) Low (ºC) High (ºC) Low (ºC) High (ºC) Low (ºC)
Jan. 6.8 -10.2 5.7 -13.1 7.6 -9.0 7.9 -5.3
Feb. 9.2 -3.9 8.0 -9.5 9.9 -5.9 9.8 -2.7
Mar.  12.0  -3.2 11.0 -5.4 12.9  -2.4 13.0 -0.1
Apr. 15.7 0.9 15.5 -0.7 16.9  1.3 16.5 3.2
May  19.7 5.1 19.5 3.4 20.4  5.2 18.8 6.8
Jun. 22.5 9.2 22.1 7.6 22.9 8.9 20.9 10.0
Jul. 21.7 9.9 21.0 8.7 22.5 10.1 22.1 11.2
Aug. 20.7 9.4 19.6 8.1 21.5 9.5 22.1 10.7
Sep. 19.6 7.6 18.7 5.8 20.5 7.6  20.3 9.2
Oct.  16.4 1.4 15.2  -1.2 17.1 1.8 17.2 4.9
Nov.  11.6 -5.0 10.7 -8.0 12.4 -4.1 12.9 -0.7
Dec.  7.7 -9.1 7.0   -12.3 8.7 -7.9 9.6 -4.5
Average 15.3 0.8 14.5 -1.4 15.5 1.3 15.9 3.6

Monthly Night Temperature of Everest Base Camp (ºC)
Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
-13 -12  -9  -8 -5 -1   1 2 -1 -6  -7 -10
 
Monthly Average Temperature of Everest Summit (ºC)
Jan.  Feb. Mar.  Apr. May.  Jun. Jul. Aug. Sep. Oct.  Nov. Dec.
-36 -35  -32  -31  -25  -20  -18  -18   -21   -27   -30   -34
 
 
 
 
 
 
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