Are there many mosquitoes in Seychelles and is Dengue a risk?

Mosquitoes are present year-round in the Seychelles, with activity typically increasing during the transition months like **October** and the wetter northwest monsoon season (November to March). While they are primarily a nuisance, it is important to be aware that **Dengue fever is endemic to the islands**, though outbreaks are sporadic and there is no risk of malaria. Most visitors will find that mosquitoes are most active at dawn and dusk, especially in lush inland areas, while the coastal breeze usually keeps them away from the beach.

In **October**, the wind begins to shift from the South-East trades to the North-West monsoon, leading to calmer air and higher humidity. This environment is ideal for the *Aedes aegypti* mosquito, which is the primary carrier of Dengue. You are most likely to encounter mosquitoes when hiking in forested areas like the **Morne Seychellois National Park** on Mahé or the **Vallée de Mai** on Praslin. If you are staying in self-catering accommodation with a tropical garden in areas like **Anse Royale** or **Côte d'Or**, you should expect some activity in the early evenings.

**Practical Prevention and Local Costs:** You do not need to bring a massive supply of repellent from home, as effective local brands are widely available in "boutiques" (small local shops) and supermarkets like **STC Supermarket** in Victoria. - **Repellent Sprays**: Local favorites like **Peaceful Sleep** or **Tabard** typically cost between **SCR 120–160**. - **Mosquito Coils**: For outdoor seating, "Koko" or mosquito coils are very effective and cost about **SCR 25–40** per pack. - **Electric Plug-ins**: Most hotels and guesthouses provide these, but you can buy refills for approximately **SCR 150–250**.

**Pro Tips from Locals:** * **Breeze is your friend**: If you are sensitive to bites, choose accommodation on the windward side of the island or near the shore where the sea breeze is constant. Mosquitoes are weak fliers and struggle in even a light wind. * **The "Daytime" Risk**: Unlike many other mosquito species, the ones that carry Dengue are active during the day. If you are dining at a garden **take-away** or exploring the botanical gardens in **Mont Fleuri**, apply repellent even if the sun is out. * **Local Attire**: While the heat makes long sleeves difficult, wearing light-colored, loose linen clothing in the evenings is a traditional and effective way to stay cool while staying protected.

The Seychelles Ministry of Health is very proactive in "fogging" (spraying insecticide) in residential areas and around hotels when mosquito counts rise. If you do develop a high fever, joint pain, or a rash during or after your trip, visit a local clinic—such as the **Seychelles Hospital** in Victoria or the **Baie Ste Anne Clinic** on Praslin. A blood test for Dengue is standard procedure and results are usually available quickly. Staying hydrated with fresh coconut water (available for **SCR 50–75** at most beaches) is a local remedy often suggested alongside medical treatment to help manage symptoms. Overall, with basic precautions and a good bottle of repellent, mosquitoes should not hinder your enjoyment of the islands.