Al Ain has a desert climate with year-round sunshine, however temperatures range from only 5°C-30°C in the winter months, which run from December to February, and it can feel cold early morning and in the evenings. In the summer months, which run from May to August, temperatures can reach as high as 50°C+ and even September and October can have high temperatures. Rainfall is sporadic, falling mainly in winter (November-March) and averages 12cm per year in most of the emirates. Rain is more common in Al Ain due to its proximity to the Hajar mountains. There are occasional sand storms, when the wind whips the sand off the desert. This is not to be confused with a shamal, a north-westerly wind that comes of the Arabian Gulf and cools temperatures down. Sand storms cover everything left outside in gardens or on balconies and can even blow inside the house. Thick fog occasionally sets in on winter mornings, causing havoc on the roads, but is invariably burnt off by mid-morning.