Weather in Koh Phangan in September
Koh Phangan, Thailand averages a high of 25.4°C (77.7°F) and low of 23.6°C (74.5°F) in September, with 22 rain days and 8.9 hours of daily sunshine. Travel score: 63.2/100 (Good). The best time to visit Koh Phangan is February.
High
25°C78°F
Low
24°C74°F
🌧️
22
rain days
☀️
8.9
hrs/day sunshine
💧
81%
humidity
63— Good
September in Koh Phangan is warm and very rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Koh Phangan?
How much does it rain in Koh Phangan in September?
Koh Phangan receives an average of 175.6mm of rainfall across 22 rainy days in September. The annual total is 1671.8mm.
What should I pack for Koh Phangan in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 25°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