Ski Dubai
A complete ski resort with five ski runs, ski school, chair lifts along with other snow based activities such as toboggan rides. The snow park is fun for all the family and possible to build your own snowman. The snow making process involves atomising water and then sprinkling the cloud with ice particles which then allows snow to fall out of the cloud. There are 5 slopes and a four man chairlift. Mall of the Emirates.

Sand skiing
A bit different but a number of tour companies offer sand skiing where you ski down sand dunes.