Ocho Rios is low-risk this winter. Reapply after the falls.

Are there mosquitoes in Ocho Rios? Yes, though the disease side is light this winter. Dengue has run low in Jamaica since late 2024, the CDC recommends no malaria medicine, and a December–April trip falls in the drier season. The bites travelers mention come on the waiting and walking parts of the Dunn's River and Blue Hole trips and from sand fleas at the resorts around dusk.

Low dengue, and no malaria medicine

Dengue, chikungunya and Zika are endemic in Jamaica, all spread by the same day-biting Aedes mosquito. Jamaica's health minister said in October 2025 that dengue had stayed below the epidemic threshold since September 2024, press reports in late November 2025 described activity as still low, and the ministry's bulletin for the week ending May 23, 2026, showed one lab-confirmed case nationwide and no deaths. There are no recent counts for St. Ann, the parish that holds Ocho Rios. Outbreaks do recur, and during the 2023–24 wave the regional health authority scheduled fogging for the Ocho Rios pier and town center, according to local press.

Jamaica eliminated malaria in 2012, the CDC's Jamaica page has no malaria section, and the CDC estimates the risk for US travelers as very low. The yellow fever vaccine isn't recommended, and it isn't required when you fly in directly from the US. The CDC considers Zika endemic, and its Jamaica page notes that "An infected pregnant woman can spread it to her unborn baby," so if you're pregnant, talk to a healthcare provider before you go. Our Jamaica briefing covers Kingston and the rest of the island.

Falls, rivers and resort beaches

Bite reports from Ocho Rios are milder and more mixed than Negril's. At Dunn's River Falls, Cruise Critic's excursion review says mosquitoes are a minor concern during the climb, with bites more likely while you wait beforehand, on the walk back and at other stops on the tour. The Blue Hole at Island Gully Falls and the White River tubing runs go through shaded, wet gullies in the hills behind town, the kind of place day-biting mosquitoes tend to like. Put repellent on over sunscreen before you leave the ship or the room, carry it, and reapply after the climb, the swim or the tubing run, because water strips it off.

The river trips come with one rule that has nothing to do with mosquitoes. PAHO reported confirmed leptospirosis deaths after Hurricane Melissa in three parishes, St. Ann among them, and the CDC says the infection spreads through urine-contaminated fresh water and mud, so skip tubing, Blue Hole swims and freshwater wading after heavy rain and ask the operator about recent flooding.

At the resorts in town and west toward Runaway Bay, one poster says the big properties spray regularly and that sand fleas, the tiny biting midges Americans call no-see-ums, are the bigger nuisance at dusk. Experiences range from never bitten to bitten often, so spray feet and ankles before sunset and keep balcony doors closed after dark. Sand-fly complaints here don't single out a beach the way Negril's do. Our Barbados sand fly guide explains how the midges behave.

Where you're going

Scores are for a December–April trip.

Heading west as well? Our Montego Bay briefing covers the Hip Strip and the Rose Hall resorts, and the Negril briefing covers Seven Mile Beach's sunset sand flies.

What travelers report

Paraphrased from two TripAdvisor threads and linked so you can read them in full. Neither is dated, and posters disagree a lot, so read them for where and when the bites happen.

• Ocho Rios (Dunn's River Falls, Konoko Falls, Blue Hole) · December

  A traveler who is bitten often, planning a December 24-29 stay, asked about mosquitoes at Dunn's River Falls, Konoko Falls and the Blue Hole. One reply, from someone also bitten a lot, advised heavy repellent in any month, said sand fleas are the bigger nuisance at dusk, suggested an after-bite cream and noted that the big resorts spray regularly. Another poster said they had never been bitten in about 20 years of visits to large and small resorts, though others report bad bites. TripAdvisor ↗

• Moon Palace Jamaica, Ocho Rios

  Asked about mosquitoes and Zika at the resort, a reply said WHO had determined the Caribbean was no longer at risk from Zika but that other mosquito-borne diseases such as dengue remain a concern, and that there will be mosquitoes, both day-biting and night-biting kinds. TripAdvisor ↗

One rule outlasts the trip. Any fever in the two weeks after you get home means a doctor visit, and you tell them you were in Jamaica, naming Ocho Rios and any river trips. Dengue usually shows up within two weeks, and the travel history is what gets you the right test quickly.

Traveler questions