Yes, there are mosquitoes in St. Martin in 2026, and they are active year-round due to the island’s tropical climate. They are most prevalent during the wet season (June to November) and are especially active during the "twilight" hours of dawn and dusk. While most bites are merely an itchy nuisance, the local government in 2026 continues to monitor for mosquito-borne illnesses such as Dengue, Zika, and Chikungunya. To protect yourself, it is essential to use an EPA-registered insect repellent containing DEET, Picaridin, or Oil of Lemon Eucalyptus. Many 2026 eco-travelers also opt for permethrin-treated clothing. When booking accommodations, prioritize rooms with air conditioning or high-quality window screens, as mosquitoes thrive in the still, humid air of shaded outdoor areas. Keeping the "standing water" around your villa to a minimum also helps reduce the local population. While they won't ruin your trip, being prepared with a small bottle of repellent is a "must" for anyone planning an evening dinner on the beach or a hike in the island's lush interior.