The month in detail
What to expect in May
May falls in the wet season in Koh Chang. Showers are often brief but intense. With 57% of rainy days, always have indoor alternatives planned.
May ranks 8 out of 12 months in Koh Chang. Compared to April: −2°F daytime, 28 pts more rainy days, −2.0h of sun per day.
This month's conditions
What it's like in May
UV index
8 · high
sunscreen and hat advised
Feels like
very humid
23°
Sea
32°C
warm, ideal
Daylight
12.6h of daylight
Air quality
good
AQI 25
Compare
Is May the right month?
The best month in Koh Chang is December (9.1/10), 4.2 pts higher than May.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Koh Chang
Expedia →
Activities
Tours, tickets, experiences
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Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Koh Chang
GetYourGuide selection · free cancellation
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 · 84°F
❄️Coolest monthJuly · 79°F
🌧️Rainiest month ⓘAugust · 81%
🏝️ Tropical stay
🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Explore
Other destinations in May
If May doesn't convince you for this destination, compare with others.
Location
Where is Koh Chang ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
ThailandTropical 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 82°F highs, 72°F 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 72°F, while afternoon highs average 82°F.
Is Koh Chang good in winter?
In winter (December-February), Koh Chang scores 8.6/10 on average — Acceptable 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 May?
In May, the sea averages 89°F in Koh Chang: warm, ideal. Ideal conditions for swimming and snorkeling.
Do you need sun protection in Koh Chang in May?
The average UV index reaches 8 in May in Koh Chang (high), with about 12.6h of daylight. Sunscreen and hat advised.