Climate of Oman
Oman has two distinct climate zones — hot-arid for most of the country, and a unique monsoon-fed sub-tropical pocket in Dhofar. The travel calendar splits into the cool season (October–March), the hot season (May–September), and the khareef in Salalah.
Overview
Cool season — October to March
Daytime 25–30°C in Muscat, 20–25°C on Jebel Akhdar, 23–28°C in Salalah. Wadis hold water, sea is swimmable, hiking is comfortable. This is the high tourist season; book Jebel Akhdar accommodation 3+ months ahead.
Hot season — May to September
45°C+ in Muscat in July. Hiking before 10:00 only; wadis still swimmable but parking-to-water walks become brutal. Diving visibility peaks August–October at the Daymaniyats. The mountains (Jebel Akhdar, Jebel Shams) drop 10°C versus the plain — Jebel Akhdar tops out at 32°C even in July.
Khareef in Salalah — late June to early September
The southwest monsoon hits Dhofar's coastal range, and only Dhofar's coastal range. Salalah turns green, daytime drops to 22–25°C with constant drizzle and fog. Beaches are unsafe to swim. This is high season locally — Gulf visitors crowd Salalah while the rest of the peninsula is at 45°C.
Practical tips
- If you are hiking or 4×4-ing, October–March is non-negotiable.
- If you want to see whale sharks at the Daymaniyats, August–October.
- If you want khareef in Salalah, fly between mid-July and mid-August for the most reliable green coverage.
Frequently asked questions
What is khareef?
The southwest monsoon that hits the Dhofar coastal range from late June to early September, bringing fog, drizzle and a green transformation of the otherwise desert landscape.
Is it too hot to visit Oman in July?
Most of the country, yes. Salalah is 23°C and green during khareef. Jebel Akhdar tops at 32°C and is comfortable. Muscat and the wadis are 40°C+ and exhausting.
Does it rain in Oman?
Rarely outside the khareef zone. Muscat averages 100 mm a year, mostly in November–March. Flash floods in wadis follow heavy rain in the Hajar mountains; the storm itself can be hours away.
Is there ever snow in Oman?
Frost is normal on Jebel Shams and Jebel Akhdar in January–February. Actual snowfall happens once or twice a decade and makes national news.