Why Oman's seasons matter.
Three things make timing in Oman consequential. First, the country's climate is sharply seasonal. Northern Oman (Muscat, Nizwa, Wahiba Sands) has Gulf desert climate, November through March is pleasant (20–30 °C), May through September is intensely hot (40–48 °C and outdoor sightseeing impractical). Southern Oman (Salalah) has the unique khareef monsoon (June through September), when the southwest monsoon brings mist, light rain, and 25 °C temperatures while the rest of the Arabian Peninsula bakes at 45 °C+. Salalah's khareef season is the country's most distinctive seasonal phenomenon. The Hajar Mountains (Jebel Akhdar at 2,000 meters, Jebel Shams at 3,000 meters) have alpine conditions, cool year-round, with January-February nights dropping near freezing. Second, Oman's iconic experiences are firmly seasonal. Wahiba Sands desert camping is best from October through April. Nizwa Friday cattle market (the iconic weekly trading market dating from medieval times) operates year-round but is best in cool months. Jebel Akhdar rose harvest in April is the country's distinctive spring cultural moment, Damask roses harvested for traditional rose water at the iconic Jebel Akhdar terraces. Salalah Khareef Festival (typically July-August) celebrates the monsoon transformation. Third, the country's iconic activities (turtle watching at Ras al Jinz from May-September, dolphin watching off Muscat, dhow cruises in Musandam) have specific seasons. Ramadan (varying with Islamic calendar) brings reduced restaurant hours and increased iftar gatherings.