Jiuzhai Valley has a subtropical to temperate monsoon climate. Valleys are warm and dry, the middle mountain slopes cold and damp. At Nuo Ri Lang Waterfall & visitor centre at an altitude of 2,400m (7,875 feet) the mean temperature is 7.3ºC, the mean January temperature is -3.7ºC and the mean July temperature is 16.8ºC. Although the official temperatures are not too high, summer temeratures often reach 30ºC.

        The total annual rainfall is 761mm but in the cloud forest between 2,700m and 3,500m it is at least 1,000mm. 80% of the rain falls between May and October as the monsoon moves up in the valley giving mild, cloudy, moderately humid summers. Above 3,500m the climate is colder and drier. Snow falls vary but usually falls between October and April with December to February receiving the heaviest falls.

Monthly precipitation totals are: 

January	15mm
February	24mm
March	36mm
April	43mm
May	87mm
June	96mm
July	104mm
August	82mm
September	86mm
October	54mm
November	26mm
December	18mm