The Thai Meteorological Department issued a level-three heat advisory on June 19. Bangkok and Phuket are forecast to see daytime highs of 39-41°C until mid-July. Health officials recorded 47 heat-related hospital admissions last week.
Popular temples and national parks will limit guided tours between 11:00 and 15:00. Hotels have increased complimentary water stations and extended pool hours. The Tourism Authority of Thailand launched a public campaign urging visitors to carry electrolytes.
Similar advisories were issued in 2024 and 2025 during the same period. Climate experts link the trend to rising ocean temperatures affecting the Andaman Sea. Phuket hospitals added extra staff for potential dehydration cases.
What this means for you
Reschedule temple visits and hiking to early morning or late afternoon slots. Carry at least two litres of water per person when outdoors and avoid alcohol during peak heat. Book hotels with strong air-conditioning and indoor activities as backup plans.
Monitor the TAT app for daily updates and cancel any open-air cooking classes if the index exceeds 40°C. Travel insurance with medical evacuation is recommended for elderly travellers.
Longer-term cooling infrastructure projects are planned for major tourist zones by 2028.