September Weather in Koh Tao

Last updated: March 2, 2024

The weather in Koh Tao, Thailand, during September is characterized by an average temperature of 28°C (82°F). Highs can soar to 30°C (86°F), while lows may dip to 26°C (79°F). Typically, the humidity level in Koh Tao throughout September hovers around 87%.

26°C (79°F)

Minimum temperature

28°C (82°F)

Average temperature

30°C (86°F)

Maximum temperature

87%

Humidity

Precipitation and Sunshine hours

In September, Koh Tao averages 192 mm (7.6 inches) of rainfall, typically over the course of 22 rainy days. The month enjoys an average of 12 hours 9 minutes of daylight, with the sun shining for approximately 9 hours 18 minutes each day. Additionally, there is a 11% probability of sunny days during this period.

192 mm (7.6 inches)

Precipitation

22 rainy days

Rainy days

9 hours 18 minutes

Sunshine hours

11%

Chance of sun

UV Index

In September, the UV Index in Koh Tao reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 2 5 9 12 14 13 10 7 3 1 1 0
Exposure Low Moderate VeryHigh Extreme VeryHigh High Moderate Low
Time to burn 45 min 30 min 15 min 10 min 15 min 25 min 30 min 45 min

Compare Koh Tao's Climate with Cities Worldwide