I would though be paying extra for the airfare and less on Accommodation to go mid March - late June or in September. If Castles and 5* is your thing then there is no harm visiting in February. The Weather might be a bit chilly and the daylight hours on the short side but the scenery won't be closed.
1 Saudi Arabia is home to the worldâs largest continuous sand desert â the Rub Al-Khali, or Empty Quarter.  Oil was first struck in Saudi Arabia in March 1938, at a depth of 1,440 metres in the Dammam oilfield.
Geography of Saudi Arabia - Water resources. 1  Until the 1980s, Saudi Arabia had lakes at Layla Aflaj and deep waterholes at 'Al-Kharj, fed by huge underground aquifers formed in prehistoric times and non-renewable.