Xian is located in Loess Plateau of Northwest of China and the city area is situated in the alluvial plain of Wei River. Xian is surrounded by eight water and mountains. There are many kinds of wild animals and plants, including giant panda, golden monkey, takin, crested ibis, which are often the key protection by the nations. It has a wide range of wild plants, which is an important gene pool of seed plants in China. Qinling is also the natural boundaries of climate between north and south and great ecological reservoir of Xian. The annual rainfall gradually increased from the 600mm to 900mm, if it was measured from Xian Plain to the of Qingling moutain areas. Consequently, the natural ecological environmental conditions are better than other cities in Northwest China. Xi'an has been the most suitable natural living environment for human survival, reproduction and development since the ancient times, for lush forests, abundant water, and humid climate. Xian belongs to monsoon climate of medium latitudes, which has offered comparative advantages to Xian’s ecological building.
Detailed Information on Seasons:
Spring (March-May): the temperature rose rapidly, but instability. After suddenly getting warmer, the weather has turned cold again.
The average temperature of Xi'an in March is 7.9 ℃, 14.1 ℃ in April, and 19.4 ℃ in May. Rainfall in spring is equal to about a quarter of one year's rainfall. The rain often continues for 7 to 9 days. Spring temperature is pleasant, sunny. And outdoor activities and travel are good decision.
Summer (June-August): Hot and rainy are its salient features. Xian is one of the hottest cities in China. July is the hottest month throughout the year, with the average temperature of up to 26.3 ℃; the average temperatures in June and August were 24.8 ℃, 15.3 ℃. The maximum temperature which is equal to or higher than 35 ℃ often continues for about 22 days. Summer rainfall is 37% of annual rainfall. The monthly average rainfall stops over 8 ~ 11 days.
Fall (September-November): Due to the Pacific subtropical and high-pressure impact, the precipitation in Xian is of course far more. The continuous rainy and cloudy is very common in fall. The average monthly rainfall is up to 99.5 mm, which is equaled to 19% of annual rainfall. Averagely, the rainy days are 12 days in this season. The level of coldness and warmness is proper, but the temperature reduction is fast.
Winter (December-February): It is cold, but short of rain and snow. The average temperature dropped to -0.5 ℃ in January. Influenced by the strong cold wave, the extreme minimum temperature may fall to -10 ℃. The rainfall is rare and the climate is dry, for the precipitation of the three months is only 24 mm, only 4% of annual precipitation.
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