Koh Tao month by month
Plan your visit to Koh Tao by month. Compare weather, crowds, events, and prices across all twelve months with historical climate data.
- January
- High
- 27°C
- Low
- 25°C
- Rain
- 20 mm
January is when Koh Tao finally dries out: November typically brings 336mm (13.2 in) of rain, but by New Year that has usually cleared, and on Open-Meteo's five-year average…
- February
- High
- 27°C
- Low
- 25°C
- Rain
- 76 mm
February on Koh Tao is not the bone-dry month most blogs promise, and Open-Meteo's five-year average puts rainfall at nearly four times January's. Most of it arrives as short…
- March
- High
- 28°C
- Low
- 26°C
- Rain
- 33 mm
The northeast monsoon typically dies out by late February, and March is when that becomes visible underwater: the east-coast bays at Tanote and Aow Leuk settle to glass, visibility…
- April
- High
- 29°C
- Low
- 27°C
- Rain
- 80 mm
April on Koh Tao is the tail end of peak season, and the sea is why people come. The Gulf of Thailand tends to lie flat this month, and underwater visibility at Chumphon Pinnacle…
- May
- High
- 29°C
- Low
- 27°C
- Rain
- 189 mm
May is when the rain returns to Koh Tao. The island logs about 189mm (7.4 in) across 22 rainy days, more than double April's total, and most of it arrives as short, heavy afternoon…
- June
- High
- 29°C
- Low
- 27°C
- Rain
- 120 mm
June on Koh Tao falls on the fortunate side of the monsoon divide. The southwest monsoon drenches Phuket, Krabi, and the rest of the Andaman coast from May onward, but Koh Tao's…
- July
- High
- 29°C
- Low
- 26°C
- Rain
- 172 mm
July on Koh Tao is not what Thailand's broader July reputation might lead you to expect. The southwest monsoon hits Phuket and the Andaman coast hard this month, but Koh Tao sits…
- August
- High
- 28°C
- Low
- 26°C
- Rain
- 145 mm
August is Koh Tao's second high season, driven more by European school holidays than by any change in the weather. Divers from Italy, Spain, France and the Netherlands fill Sairee…
- September
- High
- 28°C
- Low
- 26°C
- Rain
- 192 mm
September on Koh Tao is an awkward month to plan for. The Gulf of Thailand misses the worst of the southwest monsoon that soaks Phuket and Krabi, which keeps this island far more…
- October
- High
- 28°C
- Low
- 25°C
- Rain
- 275 mm
October opens Koh Tao's wet season and is the second-wettest month of the year after November. Daytime highs sit around 27.7°C (82°F) and nights rarely drop below 25.4°C (78°F), so…
- November
- High
- 28°C
- Low
- 25°C
- Rain
- 336 mm
November is Koh Tao's wettest month, and it isn't close. The northeast monsoon sits over the Gulf of Thailand, and the 5-year Open-Meteo record shows 336mm (13.2 in) of rain spread…
- December
- High
- 27°C
- Low
- 25°C
- Rain
- 135 mm
December on Koh Tao sits at the tail end of the Gulf of Thailand's northeast monsoon, and that is the one fact that shapes the whole month. November is the island's wettest month…