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Koh Chang, Thailand · Tropical

Koh Chang in March: go or not?

Excellent time. Koh Chang in March scores 8.4/10.

📅 Data updated: October 2026 🛰️ ERA5 · 10 years 📍 12.07°N · 102.33°E
⚡ This month's verdict
Go for it
Koh Chang · March
8.4
23–28°
Temperature
25%
Rain
7h
Sun
🌴 Tropical☀️ High UV🌧️ Monsoon season
Photo : Christian Holzinger via Unsplash
The month in detail

What to expect in March

In March, Koh Chang sees 28°C during the day with 6.9h of sunshine per day. Rain risk remains low (25% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if December (9.1/10) remains theoretically better.

March ranks 5 out of 12 months in Koh Chang. Compared to February: 10 pts more rainy days, −0.6h of sun per day.

This month's conditions

What it's like in March

UV index
9 · very high
protection essential
Feels like
very humid
22°
Sea
29°C
warm, ideal
Daylight
11.9h of daylight
Air quality
good
AQI 34
Compare

Is March the right month?

The best month in Koh Chang is December (9.1/10), 0.7 pt higher than March.

See December →See all 12 months →
Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Koh Chang

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.

Country · Thailand

🗣️LanguageThai
💶CurrencyThai Baht (฿)
🚗DrivingLeft-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘCheap · 2/5

🌡️ Climate

🌍Climate typeTropical
📈Climate trend ⓘStable
🔥Hottest monthApril · 29°C
❄️Coolest monthJuly · 26°C
🌧️Rainiest month ⓘAugust · 81%

🏝️ Tropical stay

🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Location

Where is Koh Chang ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Thailand
Tropical climate with a 9.1 → 4.3 gap between best and worst month. 10 years of ERA5 data to choose by project.
12.07°N · 102.33°E
Questions

Frequently asked questions

What is the best time to visit Koh Chang?
December is the best month with 28.0°C highs, 22.0°C lows, 8.1h of sunshine and 8.0% rainy days. The months of December & January offer comparable conditions.
How many hours of sunshine does Koh Chang get in December?
Koh Chang averages 8.1 sunshine hours per day in December. It is the sunniest month with a climate score of 8.8/10.
What is the rainiest month in Koh Chang?
August is the most unfavourable month with August has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Koh Chang in December?
In December, overnight lows reach 22.0°C, while afternoon highs average 28.0°C.
Is Koh Chang good in winter?
In winter (December-February), Koh Chang scores 8.6/10 on average — Decent period conditions for cultural visits.. The best month overall remains December with a score of 8.8/10.
When should you avoid Koh Chang?
August is the most difficult month to visit Koh Chang, with August has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Koh Chang in March?
In March, the sea averages 29°C in Koh Chang: warm, ideal. Ideal conditions for swimming and snorkeling.
Do you need sun protection in Koh Chang in March?
The average UV index reaches 9 in March in Koh Chang (very high), with about 11.9h of daylight. Protection essential.