Koh Tao Weather & Climate: Best Time to Visit

The temperature in Koh Tao remains steady throughout the year, providing a consistently very warm climate. Average daytime temperatures reach a very warm 31°C (88°F) in May. In January, the coolest month of the year, temperatures drop to a comfortable 29°C (84°F).

At night, temperatures range from around 28°C (82°F) in May to 26°C (79°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Koh Tao has a relatively rainy climate with high precipitation levels, averaging 1794 mm (71 in) of rainfall annually. Koh Tao can be quite wet during October, receiving approximately 311 mm (12 in) of precipitation over 20 rainy days.

In contrast, during the driest month (February), you will experience much drier conditions, with 38 mm (1.5 in) of precipitation spread across 5 rainy days days. For more details, please visit our Koh Tao Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Koh Tao can be enjoyed more throughout the sunniest month of March under a blue sky, with approximately 8.0 hours of sunshine daily. In contrast, the city experiences much darker days in September, with only 4.9 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The city experiences its highest humidity in October, reaching 86%. In June, the humidity drops to its lowest level at 79%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year