Weather in Koh Tao in September
Koh Tao, Thailand averages a high of 27.3°C (81.1°F) and low of 25.6°C (78.1°F) in September, with 22 rain days and 8.8 hours of daily sunshine. Travel score: 62.5/100 (Good). The best time to visit Koh Tao is February.
High
27°C81°F
Low
26°C78°F
🌧️
22
rain days
☀️
8.8
hrs/day sunshine
💧
81%
humidity
63— Good
September in Koh Tao is warm and very rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Koh Tao?
How much does it rain in Koh Tao in September?
Koh Tao receives an average of 164mm of rainfall across 22 rainy days in September. The annual total is 1580.5mm.
What should I pack for Koh Tao in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 27°C
🧥
Waterproof jacket
Frequent rain expected (22 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Thailand in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31