January is one of the excellent months to visit Koh Tao, with daytime temperatures of 29°C (84°F) and lows of 26°C (79°F) at night. Do note that quite a bit of rainfall is typical, averaging around 72 mm (2.8 in).
If you're inclined towards comfortable temperatures and drier conditions, January is a good time to visit Koh Tao.
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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.
50-year average (1976-2026)
Based on our historical records, temperatures in Koh Tao typically stay consistent throughout January, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 25°C (77°F).
50-year average (1976-2026)
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 weather observations in Koh Tao between 1993 and 2025, these are the recorded extremes during January.
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in January →
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 weather calls for comfortable, breathable clothing in January. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
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 January - average daytime high across popular destinations.
Bangkok
33°C (91°F) Ao Nang Beach
31°C (88°F) Jomtien Beach31°C (88°F) Chiang Mai31°C (88°F) Ko Lanta31°C (88°F) Hua Hin30°C (86°F) Patong Beach30°C (86°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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