Thinking of visiting Koh Tao in December? Expect high temperatures reaching 29°C (84°F) during the day, dropping to 26°C (79°F) at night, and note that quite a bit of rainfall is likely.
If you prefer dry days with pleasant temperatures, January and February typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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Pick a month to see the average temperature, rainfall and sunshine in Koh Tao - and find the best time to visit.
48-year average (1976-2025)
Based on our historical records, temperatures in Koh Tao typically stay consistent throughout December, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 25°C (77°F).
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Koh Tao spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 39 years of weather observations (1986-2025), these are the most extreme conditions recorded in Koh Tao.
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm but pleasant conditions in Koh Tao in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the month
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Koh Tao climate overview or explore weather in Thailand.
Where to go in December - average daytime high across popular destinations.
Bangkok
33°C (91°F) Jomtien Beach
31°C (88°F) Ao Nang Beach
30°C (86°F) Hua Hin30°C (86°F) Chiang Mai30°C (86°F) Ko Lanta30°C (86°F) Patong Beach29°C (84°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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