Weather in Koh Tao
Surat Thani · Gulf
Here you can see how warm it gets in Koh Tao month by month, how much rain falls and when the best time to visit is. The figures are long-term averages from the Thai weather service, not a forecast.
Koh Tao is the smallest of the three well-known islands in the Gulf, north of Koh Phangan. Koh Tao has no weather station of its own with long-term figures. The figures come from the Koh Samui station, about 73 km away.
Koh Tao through the yearTemperature and rain
All values as a table
| Month | Koh Tao (Gulf) |
|---|---|
| Jan | 29° / 24° at night · 86 mm |
| Feb | 29° / 25° at night · 54 mm |
| Mar | 31° / 26° at night · 81 mm |
| Apr | 32° / 26° at night · 83 mm |
| May | 33° / 26° at night · 156 mm |
| Jun | 32° / 26° at night · 124 mm |
| Jul | 32° / 25° at night · 116 mm |
| Aug | 32° / 25° at night · 111 mm |
| Sept | 32° / 25° at night · 122 mm |
| Oct | 30° / 24° at night · 310 mm |
| Nov | 30° / 24° at night · 507 mm |
| Dec | 29° / 24° at night · 210 mm |
Source: Thai Meteorological Department (TMD), climate averages 1981 to 2010, rounded. Temperature = average daily high, rain = monthly total. Individual years can differ considerably.
Weather in Koh Tao month by month
Koh Tao in January
In January, daytime temperatures in Koh Tao average 29 °C, with 24 °C at night. With around 86 millimetres of rain, January is fairly dry with occasional showers.
Koh Tao in February
In February, daytime temperatures in Koh Tao average 29 °C, with 25 °C at night. With around 54 millimetres of rain, February is dry. It is part of the best time to visit.
Koh Tao in March
In March, daytime temperatures in Koh Tao average 31 °C, with 26 °C at night. With around 81 millimetres of rain, March is fairly dry with occasional showers. It is part of the best time to visit.
Koh Tao in April
In April, daytime temperatures in Koh Tao average 32 °C, with 26 °C at night. With around 83 millimetres of rain, April is fairly dry with occasional showers. It is part of the best time to visit.
Koh Tao in May
In May, daytime temperatures in Koh Tao average 33 °C, with 26 °C at night. With around 156 millimetres of rain, May is a rainy season month. It is part of the best time to visit.
Koh Tao in June
In June, daytime temperatures in Koh Tao average 32 °C, with 26 °C at night. With around 124 millimetres of rain, June is a rainy season month. It is part of the best time to visit.
Koh Tao in July
In July, daytime temperatures in Koh Tao average 32 °C, with 25 °C at night. With around 116 millimetres of rain, July is a rainy season month. It is part of the best time to visit.
Koh Tao in August
In August, daytime temperatures in Koh Tao average 32 °C, with 25 °C at night. With around 111 millimetres of rain, August is a rainy season month. It is part of the best time to visit.
Koh Tao in September
In September, daytime temperatures in Koh Tao average 32 °C, with 25 °C at night. With around 122 millimetres of rain, September is a rainy season month. It is part of the best time to visit.
Koh Tao in October
In October, daytime temperatures in Koh Tao average 30 °C, with 24 °C at night. With around 310 millimetres of rain, October is very wet.
Koh Tao in November
In November, daytime temperatures in Koh Tao average 30 °C, with 24 °C at night. With around 507 millimetres of rain, November is very wet. This is the wettest month of the year.
Koh Tao in December
In December, daytime temperatures in Koh Tao average 29 °C, with 24 °C at night. With around 210 millimetres of rain, December is a rainy season month.
Frequently asked questions about the weather in Koh Tao
When is the best time to visit Koh Tao?
The best time to visit Koh Tao is February to September. In these months an average of 54 to 156 millimetres of rain falls, and daytime temperatures reach 29 to 33 °C.
When is the rainy season in Koh Tao?
On average, more than 100 millimetres of rain a month fall in Koh Tao from May to December. The most rain falls in November, with around 507 millimetres, the least in February, with around 54 millimetres.
When is it hottest in Koh Tao?
It is hottest in May, with an average of 33 °C by day. Nights stay warm all year, with lows between 24 and 26 °C.
Getting there, places to stay and day trips: Destination Koh Tao