April, May, September, and October have sunny days (coolish in May, hot in Oct). Winter (June-Aug) means mild temperatures with cold nights. Summer (Nov-Mar) is ferociously hot and best avoided. In summer, limit exertions to early morning and late afternoon, and choose air-conditioned accommodations. Rain is rare but can come at any time of year.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.