Lake Atitlán has no malaria and few mosquitoes. A light routine covers it.

Are there mosquitoes at Lake Atitlán? Very few. The CDC states that there is "No malaria transmission at Lake Atitlán," and at about 5,100 feet (1,560 m) visitors describe few or no mosquitoes. Dengue is the one disease to keep in mind. It reaches the lake towns in active years, and its mosquito bites by day.

No malaria at the lake, in the CDC's words

The CDC's Guatemala page places malaria "Primarily in the departments of Alta Verapaz, Baja Verapaz, Escuintla, Izabal, and Petén" and says "No malaria transmission at Lake Atitlán." Because it names the lake itself, Panajachel, San Pedro, San Juan, San Marcos and Santiago Atitlán are all outside the CDC's malaria-medicine areas. The CDC doesn't recommend the yellow fever vaccine for Guatemala, and it says "Chikungunya vaccination is generally not recommended."

The lowlands are another matter. The road south from Santiago drops toward the Pacific slope, where Escuintla is one of the five medicine departments, and Tikal is in Petén. If either is on the route, see a travel clinic 4–6 weeks before departure. Our Guatemala briefing covers the lowlands, and the Antigua briefing covers the colonial city most visitors pass through on the way to the lake.

Dengue in the lake towns

No dengue count for Sololá, the lake's department, or for the lake towns has been published for 2025 or 2026. In the record year of 2024, Guatemalan press reported Sololá among the areas above the national dengue rate early in the year, and that June health brigades went house to house in Panajachel against the dengue mosquito. Nationally, 2026 has been a low year. The health ministry's count through late July was about 43% below the same point of 2025. In October the Pan American Health Organization reported dengue rising again across Central America, with three dengue types circulating together in Guatemala.

The mosquito behind it, Aedes, breeds in water containers and plant pots and bites in daylight, with peaks after sunrise and in the late afternoon. Panajachel's streets and courtyards are the likeliest in-town exposure, so repellent goes on over sunscreen in the morning. Our dengue & Zika routine has the full schedule.

Lakeside lodges and the dry season

Forum visitors describe few mosquitoes around the lake, even in the rainy season. The greener, more humid hillside villages of the northwest shore, San Marcos, Tzununá and Jaibalito, have garden cabins and open-air decks, and those lodges have more of a reputation for spiders, scorpions and big moths in the room than for bites. Ask for a room with intact screens or a net, shake out shoes and bedding, and put repellent on before dusk on a dock or a yoga deck. The launches across the lake are open and breezy.

December to April is the highland dry season, sunny by day and cool at night, and the quietest stretch for mosquitoes. Nights by the lake can be cold in December and January, so pack a warm layer along with the spray.

Where you're going

Scores are for a December–April trip.

What travelers report

Paraphrased from a TripAdvisor thread and a guest review, linked so you can read them in full. Neither is dated, and the review is probably an old one.

• Panajachel · Late August to late September (one poster's stay); question about a November trip

  Asked about treating clothes and taking malaria pills for a November trip, a reply from someone never bothered by mosquitoes at the lake still advised light long sleeves, permethrin-treated clothing and DEET and said malaria is not a concern at that altitude; a visitor who spent a month in Panajachel from late August to late September saw no mosquitoes at all. TripAdvisor ↗

• Lush Atitlan, San Marcos La Laguna

  In a review titled 'Way too many bugs', a guest said the room was overrun with insects, with more spiders, scorpions and giant moths than they had ever seen. TripAdvisor ↗

One rule outlasts the trip. Any fever during the trip or after you get home means a doctor visit, and you tell the doctor you were in Guatemala, naming any lowland stops.

Traveler questions