Conditions in Swaziland vary according to altitude, with the higher areas being generally cloudy, misty and several degrees cooler than the rest of the country. The mountainous region in the west, where most tourists spend their time, is humid and wet, the rain falling in occasional violent storms. In the middle and lowland regions conditions are drier, the climate ranging from sub-tropical to tropical as one moves east. The rainy season is generally between October and May and is warm and wet, while cooler and drier conditions prevail from June to September.