Mosquitoes in Oman: Muscat Dengue, Desert Camps & Winter Trips (2026)

Dengue has spread locally in Muscat since 2018, mostly in Seeb and Bawshar, and cases there peaked in April and May in 2022 and 2023. December to February is the quieter window, the Ministry of Health reported a notable decline in 2026, and the desert and the interior tend to be light on bites.

Yes, and in Muscat they include Aedes aegypti, the day-biting mosquito that spreads dengue. Dengue has spread locally in the capital since 2018, mostly in Seeb, where the airport is, and Bawshar, and cases rise from November to a peak in April and May. The CDC lists no malaria medicine for Oman, and the desert camps, Nizwa and the wadis tend to be light on bites in winter.

Disease risk ModerateDengue has spread locally in Muscat since 2018, mainly in Seeb and Bawshar, with an April–May peak; the ministry reported a notable decline in 2026.

Bite nuisance OccasionalWinter tends to be light, with evening mosquitoes at Muscat's outdoor tables and mixed reports from desert camps.

CirculatingDengue (Muscat, since 2018)Leishmaniasis (sand flies)No malaria medicine (CDC)No CDC travel noticeNo yellow fever vaccine advised

CDC noticesNo country-specific notice for mosquito-borne disease

Dec–Apr tripsDecember to February is the quietest window. Muscat's dengue cases rise from November and peaked in April and May in 2022 and 2023, so a late March or April trip carries more exposure. Salalah's insect season is the June–September khareef.

Data checkedOctober 2026 · sources

Dengue in Muscat

Oman's first local dengue outbreak was detected in December 2018 in Seeb, where a mosquito survey turned up Aedes aegypti, a species not previously reported there. Fifty-nine cases were confirmed over five months before a clean-up campaign in January 2019 contained it. A second outbreak, from mid-March to mid-April 2022, had 169 confirmed cases, mainly in Bawshar and Seeb. Oman Daily, reporting Ministry of Health data in July 2024, put national totals at 1,989 cases in 2022 and 2,711 in 2023. Of 345 people hospitalized with dengue in Muscat over those two years, 98.6% caught it locally and 95% lived in Seeb or Bawshar.

The timing matters for a winter trip. In those hospital records, cases peaked in April in 2022 and in May in 2023, and a rise that began in November 2022 lasted until May 2023. December to February is the lower-risk window, and late March and April carry more exposure. In September 2026, the Times of Oman reported the Ministry of Health saying cases had not risen in 2026 and had declined notably, though it gave no figures.

Aedes bites by day, with peaks after sunrise and in the late afternoon. In Muscat, put repellent on over sunscreen in the morning and again before sunset, most of all in Seeb and Bawshar and from March on. Our dengue & Zika routine has the full schedule, and our guide to bites in a dengue zone covers what to watch for afterward. The CDC lists Oman among areas with mosquitoes that can spread Zika but no reported cases, and advises everyone there, pregnant travelers included, to prevent bites during and after travel.

Desert camps, wadis and Salalah

Beyond Muscat's dengue neighborhoods, a winter trip tends to be light on bites, and in the city evening mosquitoes at outdoor tables are the usual nuisance. Camps in the Wahiba Sands vary, so check the screens, ask whether the beds have nets, and bring repellent. The CDC's Oman page lists leishmaniasis, spread by sand flies that bite from dusk to dawn, one more reason to cover your legs after dark at camp. Standing water near the wadis breeds mosquitoes, and the CDC also lists schistosomiasis, a parasite picked up from contaminated freshwater, so stay out of stagnant wadi water.

Salalah, in the far south, tends to be dry and light on bites in winter. Its insect season is the khareef, the June–September monsoon, when the Ministry of Health issued a mosquito advisory for visitors in July 2026 and Dhofar Municipality sprays against arnoot, a biting midge, at springs and at Wadi Darbat.

You don't need a yellow fever certificate flying in from the US, and Oman asks for one only from travelers 9 months or older arriving from a country with yellow fever risk, with Rwanda and Tanzania added, including layovers of more than 12 hours there.

Where you're going

How the main stops compare for a December–April trip.

city

Muscat

Disease risk ModerateBite nuisance Occasional

Dengue has spread locally here since 2018, mostly in Seeb, where the airport is, and Bawshar. Wear repellent by day as well as for evening meals outside, especially from March on.

countryside

Wahiba Sands camps

Disease risk NegligibleBite nuisance Occasional

No disease figures single out the desert, and camp reviews are mixed on mosquitoes. Check that screens are intact, ask whether the beds have nets and spray your ankles before dusk.

countryside

Nizwa & the wadis

Disease risk LowBite nuisance Occasional

Dengue has turned up in the interior governorate of Ad Dakhiliyah, including Bahla district, though no case figures single out Nizwa or the wadis. Standing water near wadis breeds mosquitoes, so carry repellent and stay out of stagnant pools.

beach

Salalah & Dhofar

Disease risk NegligibleBite nuisance Hardly any

In winter Salalah tends to be dry and light on bites. A summer khareef visit is a different trip, with a Ministry of Health mosquito advisory in July 2026 and municipal spraying against biting midges at Wadi Darbat and the springs.

Pairing Oman with Dubai or Jordan? Our Dubai and Jordan briefings cover Dubai's dengue after the 2024 floods and the Dead Sea's sand flies.

The Oman kit

Small and simple. Daytime use in Muscat is the part that counts.

Picaridin 20% travel sprays: odorless in the heat and layers over sunscreen for a day in Muttrah or Seeb. One 3.4 oz bottle rides in a carry-on and covers about a week of daily use for one person.
Light long pants or socks for evening meals outside and a night at a desert camp, when the ankles take the bites.

Carry-on trio → Full rankings

What travelers report

Paraphrased from TripAdvisor threads and camp reviews, and linked so you can read them in full. None is dated to a year, and one Muscat thread is more than a decade old, so the dengue picture above is the newer one.

Muscat · December
A reply said mosquitoes are mainly a concern when eating outdoors in the evening and suggested tucking trousers into socks because they go for the ankles; the same poster said there is no malaria around Muscat, so no tablets are needed. The thread is about 13 years old. TripAdvisor ↗
Muscat (Seeb)
Replies said malaria is very unlikely around Muscat and recent cases were usually brought in by already-infected travelers; one poster mentioned a municipal and Ministry of Health spraying program after a few dengue cases in Seeb, near the airport, and advised avoiding standing water near wadis. TripAdvisor ↗
Thousand Nights Camp, Wahiba Sands
A reviewer who praised the camp said the only thing missing in the tent was a mosquito net over each bed. TripAdvisor ↗
Safari Desert Camp, Bidiyah (edge of Wahiba Sands)
A guest noted the beds had mosquito nets but did not notice any bugs during the stay. TripAdvisor ↗

One rule outlasts the trip. Any fever during or after your trip means a doctor visit, and you tell them you were in Oman. Dengue usually shows up within two weeks of the bite.

Traveler questions

Is there dengue in Muscat?

Yes. Dengue has spread locally in Muscat since 2018, mostly in Seeb and Bawshar. Oman Daily, reporting Ministry of Health data, put national totals at 1,989 cases in 2022 and 2,711 in 2023, and in September 2026 the ministry said cases had declined notably. There's no CDC travel notice. The mosquito that spreads dengue bites by day, so wear repellent in daylight as well as in the evening, especially from March to May.

Is winter a good time to visit Oman for fewer mosquitoes?

Mostly. December to April is the cool, dry season in northern Oman, and mosquitoes are rarely a problem. It does overlap Muscat's dengue season: cases rise from November and peaked in April and May in 2022 and 2023, so December to February is the lower-risk window. Salalah follows its own calendar, with its mosquito and midge season in the June–September khareef.

Do I need malaria pills or a yellow fever vaccine for Oman?

The CDC's Oman page lists no malaria and recommends no malaria medicine for any part of the country, even though Oman isn't on the World Health Organization's list of countries certified malaria-free. The CDC doesn't recommend the yellow fever vaccine, and you don't need proof when you fly in directly from the US. Oman does require it from travelers 9 months or older arriving from a country with yellow fever risk, with Rwanda and Tanzania added, including airport layovers of more than 12 hours in one. If Oman comes after a safari in Tanzania or Rwanda, see a travel clinic 4–6 weeks before departure.

Are there mosquitoes at Wahiba Sands desert camps?

Some, depending on the camp. Check the screens, ask whether the beds have nets, and spray your ankles and legs before dusk. The CDC's Oman page also lists MERS, which may spread from camels, and Crimean-Congo hemorrhagic fever, spread by ticks and by contact with infected animals' body fluids, so keep your distance from camels and livestock at camp.

Sources

Health authorities, surveillance reports and news coverage of official bulletins used for this briefing, last checked October 2026. Traveler reports are linked where they appear. This page summarizes public-health guidance and is not medical advice.

Winter is Oman's best season. Muscat's dengue peaks at the end of it.