The climate is cool, and many areas above 1,500 metres often have chilly nights. The western slopes are very wet, some places have almost 7,000 mm of rain per year. The eastern slopes are parts of the mid-dry zone as it is receiving rain only from North-Eastern monsoon. The temperatures range from 24°C at Kandy to just 16°C in Nuwara Eliya, which is 1,889 m above sea level. The highest mountains in Sri Lanka are in the Central Province. The terrain is mostly mountainous, with deep valleys cutting into it. The two main mountain regions are the central massif and the Knuckles range to the east of Kandy.