Mosquitoes in Machu Picchu: What You Should Know Before Traveling

Although Machu Picchu is known for its archaeological and natural wealth, many travelers are unaware that there are also mosquitoes and other biting insects, especially during certain times of the year and in specific areas of the sanctuary.

In general, NO active cases of serious diseases transmitted by mosquitoes (such as dengue, zika, or malaria) are reported in Machu Picchu or Aguas Calientes. The Ministry of Health of Peru considers this area to be of low epidemiological risk.

During the rainy season, which runs from November to March, Machu Picchu sees the highest number of mosquitoes. During these months, frequent rains and high humidity—above 70%—create stagnant water surfaces where mosquitoes breed their larvae.

For the entire year, it is recommended to always bring insect repellent, wear light long-sleeve clothes and long pants, preferably in light colors, to reduce the number of bites. Avoiding the more forested areas during critical times of the day also reduces contact with mosquitoes.

If your accommodation is very close to watercourses or in areas with dense vegetation, it is advisable to sleep with a mosquito net or ensure that the windows are protected. Also, those who are prone to allergic reactions should bring antihistamines and soothing gels to apply on bites in case of intense irritation.

When are there more mosquitoes in Machu Picchu?

The presence of mosquitoes in Machu Picchu varies throughout the year, depending on the climate and humidity. Although they are more frequent during the rainy season, it is important to know that they are present year-round, especially in low and humid areas such as Aguas Calientes, Mandor, and the nearby jungle trails.

Rainy season (November to March)

During this time, the climate is warm and very humid, creating ideal conditions for mosquito breeding. Constant rain generates puddles and areas of stagnant water that favor their appearance.

• Average temperature: 18 °C to 26 °C
• Humidity: High (70%–90%)
• Peak mosquito activity: at dawn (5:30 a.m. to 7:30 a.m.) and at dusk (4:30 p.m. to 6:30 p.m.)

Dry season (April to October)

Although the number of mosquitoes decreases, they do not disappear completely. They are still present in humid areas, especially in the morning and late afternoon. Dense vegetation and proximity to rivers remain risk factors.

• Average temperature: 12 °C to 22 °C
• Humidity: Moderate (60%–70%)
• Moderate mosquito activity: similar to the rainy season hours

Don’t forget to bring repellent on long walks, especially on jungle trails or shaded areas, like the Inca Trail or the Mandor gardens.

What can I bring to prevent mosquito bites?

• Repellent with DEET or icaridin (spray or wipes)
• Soothing gel for post-bite relief (aloe vera, calamine)
• Travel mosquito net (lightweight and foldable)
• Antihistamines (loratadine, cetirizine)
• Fragrance-free wet wipes
• Water bottle to stay hydrated (itchiness increases with dry skin)

What effects can mosquito bites have?

• Itching and irritation: especially if scratched.
• Localized swelling: in sensitive individuals or those with delicate skin.
• Minor infections: if scratched excessively or with poor hygiene in rural areas.

Do the mosquitoes in Machu Picchu transmit diseases?

In general, NO active cases of serious diseases transmitted by mosquitoes (such as dengue, zika, or malaria) are reported in Machu Picchu or Aguas Calientes. The Ministry of Health of Peru considers this area to be of low epidemiological risk. However, climate change and tourism movements could alter this situation in the future, so it is always recommended to take precautions. Mosquito bites may cause intense itching, mild allergic reactions (in sensitive people), and discomfort during walks.

What types of mosquitoes are there?

The mosquitoes in Machu Picchu mainly belong to the Culicidae family, although not all bite or transmit diseases. The most common are:

• Hematophagous mosquitoes (biting mosquitoes): mainly at dawn and dusk.
• Gnats: large, slow-flying, and visible; their bites often leave irritating marks.
• No-see-ums (small, barely visible): they are smaller, and their bites can cause more irritation than regular mosquitoes.

Where are there more mosquitoes?

• Aguas Calientes (Machu Picchu Pueblo): Being at a lower altitude (2,040 m above sea level) and near the Urubamba River, it has a warmer and more humid climate, ideal for mosquitoes.
• Humid and jungle paths such as those leading to Puente Ruinas, Mandor, Hidroeléctrica, or the Inca Trail.
• Shaded trails, with dense vegetation and stagnant water or high humidity.

Recommendations for your trip to Machu Picchu

Repellent:

• Use products with 20-30% DEET or icaridin.
• Apply on exposed skin and clothing if in humid areas.
• Natural alternatives such as citronella or lemon eucalyptus oil, although they last for a shorter time.

Clothing:

• Long-sleeve, light-colored clothing.
• Wear long pants, preferably closed at the ankles.
• Avoid dark-colored clothing, as it attracts more insects.

Other useful tips:

• Sleep with mosquito nets if staying near rivers or in the jungle.
• Do not use sweet perfumes or strong-scented creams.
• If you're prone to reactions, bring oral or topical antihistamines.

How to dress to avoid mosquitoes in Machu Picchu (without overusing repellent)?

• Long-sleeve clothing and long pants: Wear long-sleeve shirts and slim pants that are breathable, preferably made from materials like cotton or light synthetic fabrics. Make sure the clothing covers your wrists and ankles, where mosquitoes tend to bite. Keep in mind that mosquitoes are attracted to dark colors like black, navy, or red; opt for light, neutral colors: beige, white, light gray, or olive green.
• Hat or wide-brimmed hat: Protects your neck and face, especially in forested or shaded areas, and protects you from the sun without exposing your skin.
• Long socks: Wear them over your pants or make sure they are tightly fitted at the edge to prevent insects from entering.
• Closed footwear: Avoid sandals or open footwear. Mosquitoes tend to bite feet and ankles, especially when walking on damp trails.
• Clothing treated with repellent: There are garments treated with permethrin, a textile insecticide that repels insects and lasts through several washes. They are sold as trekking or safari clothing.
• Gaiters or ankle sleeves also help seal off insect entry, and if you carry a backpack, use shoulder and neck covers, which are often exposed.