Koh Tao Weather in December
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.
Rainfall in Koh Tao in December
Looking at the last 30 years, the data shows about 11 days with rain, averaging 117 mm (4.6 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Koh Tao in December
Temperatures in Koh Tao in December top out at 29°C (84°F) and drop to 26°C (79°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 26°C (79°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.
Sunshine in Koh Tao in December
The month brings about 177 hours of sunlight, offering a comfortable mix of sun and overcast.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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Koh Tao's climate page.
Koh Tao Temperature in December
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Chance of Rain
37%
Precipitation
117 mm (4.6 in)
Rainy days
11 days
Humidity
83% *
Sunshine
177 hours *
Percentage Sunshine
*
Daily Historical Temperatures
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).
Average temperatures in December
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Koh Tao in December
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.
Koh Tao historical weather extremes in December
Based on 39 years of weather observations (1986-2025), these are the most extreme conditions recorded in Koh Tao.
- Koh Tao recorded its highest December temperature of 34°C (93°F) on December 11, 2023.
- The coldest December day was on December 25, 1999, with a maximum of 24°C (75°F).
- The coldest night in December in Koh Tao was on December 21, 1999, with a minimum of 20°C (68°F).
Best Places in Thailand in December
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
pleasant
tolerable
unpleasant
poor
What to Wear in Koh Tao in December
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 monthWhat To Do in Koh Tao in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Koh Tao's climate page.
Temperature Rainfall Sunshine Humidity
See the full Koh Tao climate overview or explore weather in Thailand.
