Weather in Ko Samui in March
Ko Samui, Thailand averages a high of 29.4°C (84.9°F) and low of 26.5°C (79.7°F) in March, with 9 rain days and 10.8 hours of daily sunshine. Travel score: 82/100 (Excellent). The best time to visit Ko Samui is February.
High
29°C85°F
Low
27°C80°F
🌧️
9
rain days
☀️
10.8
hrs/day sunshine
💧
77%
humidity
82— Excellent
March in Ko Samui is hot and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Ko Samui?
How much does it rain in Ko Samui in March?
Ko Samui receives an average of 81.3mm of rainfall across 9 rainy days in March. The annual total is 1531.5mm.
What should I pack for Ko Samui in March?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 29°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (9 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to Thailand in March?
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