But - mossies really have more to do with where you are staying and the type of vegetation. So, come prepared - but you may not need to battle with them. On the beach - no problems - in town in the evenings not much problem. Most restaurants - in the evenings will burn the citronella (sp?)

Mosquitoes are a prevalent part of life in Phuket, as in most tropical destinations, but their "badness" depends largely on the season and your specific location on the island. They are most active during the rainy season (May to October), as the increased humidity and pockets of standing water create ideal breeding grounds. You will find them most active during "crepuscular" hours—dawn and dusk—especially in areas with dense vegetation, near lakes, or in garden-heavy resorts. While they are a nuisance, the primary concern for travelers is the risk of mosquito-borne illnesses like Dengue Fever, which is endemic to Thailand. Malaria is not a significant risk in the main tourist areas of Phuket, but Dengue outbreaks can occur. To stay safe, it is highly recommended to use a high-quality repellent containing DEET or Picaridin, wear long-sleeved clothing in the evenings, and ensure your accommodation has proper screens or air conditioning. Most upscale resorts in Phuket perform regular "fogging" (spraying insecticide) to keep the populations down, but if you are dining outdoors at a local "sala" or trekking in the jungle, you should expect to encounter them and take proactive precautions to avoid bites.