Weather in Oman in September

Following the extreme heat of the hottest summer months, the weather in Oman in September starts to cool. That said, northern regions are still hot, but relief is in sight as humidity drops and nighttime heat and humidity start to drop. Highs in Muscat average 100°F (38°C). In Dhofar, the Khareef monsoon ends, but the region remains green and beautiful and relatively cool. The mountains begin to see more comfortable conditions for trekking, while beach activities become more manageable in the mornings and evenings. September offers a transition from extreme summer heat to more comfortable travel conditions, making it a good time for those who prefer fewer crowds.

Oman in September at a glance

September marks the slow transition from summer to fall in Oman. The weather in Oman in August lingers into early September, especially in the north, while Salalah begins to dry out after the Khareef monsoon.

Here’s what to expect:

• Muscat and the desert often see highs above 100°F (38°C), so indoor attractions and beach resorts are still the go-to.
• The Khareef season ends, but misty hills and green valleys remain for a few more weeks.
• Tourist numbers drop in Salalah, making it a great time to enjoy the scenery without the peak-season rush.
• Prices stay low in the north, and begin to fall in the south as demand decreases.
• While not the best time to visit Oman overall, September offers a quieter, more affordable experience — especially in Salalah.

Is September a good time to visit Oman?

The weather in Oman in September offers a sweet spot for travelers who prefer to avoid crowds while enjoying the last breath of summer warmth with hints of fall relief. In Salalah, the Khareef season comes to an end, but the landscape is still lush and green, making it one of the best places to visit in Oman this time of year.

In the north, temperatures start to dip slightly, though the days are still hot. Mornings and evenings become more comfortable, making sightseeing and outdoor activities much more enjoyable. Beach days, diving trips, and cultural exploration — some of the best things to do in Oman — start to pick up again as the country moves toward the milder fall months. September is a unique time to experience both the last of Salalah’s greenery and the slow transition to cooler weather in the rest of Oman.

Average daily temperatures in September

September is a transitional month, with the heat gradually decreasing, making travel more comfortable toward the end of the month.

In Muscat in September, temperatures begin to drop slightly compared to the baking highs of peak summer, with daytime highs still hot at around 100°F (38°C) and nighttime lows near 82°F (28°C). The weather remains hot but starts to become more manageable.
In the mountains, daytime highs average a pleasant 79°F (26°C), while nights cool to 61°F (16°C), making outdoor activities possible and comfortable.

Desert temperatures remain high, with daytime highs of 108°F (42°C), but evenings begin to feel slightly cooler at around 79°F (26°C).

Salalah sees the end of its monsoon season, with highs rising to 84°F (29°C) and the mist beginning to clear. The greenery starts to fade from its verdant brightness, but the cooler temperatures still make it an appealing destination.

What about the crowds and cost?

Salalah's Khareef season ends in September, and while travel to the rest of Oman gradually picks up as the month moves on, Salalah's tourist numbers start to drop. Although the heat is still present in the north of the country and along the coast, it is beginning to cool down, which makes locations like Muscat, Nizwa and Jebel Akhdar more alluring.

That means September is a fantastic time to enjoy savings on hotels and tours at a time of year that's manageable temperature-wise. As they set up ready for the next cooler months, desert camps and outdoor activity providers start to reopen, frequently with special offers to entice early tourists.

Things to do in Oman in September

September marks the end of the Khareef season in Salalah, while temperatures in northern Oman begin to cool slightly. It’s a transitional month that offers both greenery in the south and the start of outdoor exploration in the north. Here're some of the best ativities to add to your Oman itinerary in September.

Enjoy the final moments of the Khareef monsoon in Salalah

Early in September, the cool, misty weather of the Khareef monsoon starts to be repalced by drier, hotter weather. That means the greenery in Dhofar starts to fade, but early in the month, visitors can still experience waterfalls, misty hills and cooler temperatures before the landscape begins drying out.

Explore the Al Ayn and Bat Beehive Tombs

These ancient tombs, dating back over 4,000 years, are a UNESCO World Heritage Site. September’s lower temperatures make it a good time to visit these fascinating archaeological structures set against Oman’s rugged landscapes.

Visit Wadi Al Arbeieen

One of Oman’s most beautiful wadis, Wadi Al Arbeieen features clear pools, waterfalls and dramatic rock formations. September’s slightly cooler weather makes hiking and swimming here more enjoyable than in the peak summer months.

Walk along the corniche in Mutrah

As temperatures begin to ease, a walk along Mutrah’s scenic corniche is a great way to enjoy Muscat’s coastal beauty. Visitors can explore the historic Mutrah Souq, admire the grand mosque’s architecture, and watch the sunset over the harbor.

Camp in the Hajar Mountains

With the intense summer heat fading, September is an ideal time for overnight camping in the Hajar Mountains. The cool mountain air and star-filled skies provide a refreshing break from the cities — and a perfect introduction to wild camping in Oman.

Festivals and Events in Oman in September

The end of the cool and misty Khareef monsoon season in southern Oman coincides with a return to traditional activities across the rest of the country, which is starting to cool down. While large-scale festivals are virtually non-existent, there are plenty of authentic cultural experiences to enjoy in Oman in September:

• National Horse Racing Championship: Experience thrilling races held across different regions, showcasing Oman's deep and proud equestrian heritage.
• Date Harvest Season: September marks the peak time for date harvesting, offering visitors a chance to witness local farms in full production mode and sample fresh dates.
• Dhofar Camel Festival: Immerse yourself in Bedouin traditions through this vibrant event featuring impressive camel beauty contests and exhilarating races.