Koh Chang Weather in May
Thinking of visiting Koh Chang in May? Expect very high temperatures reaching 31°C (88°F) during the day, dropping to 27°C (81°F) at night. Heavy showers are common during the rainy season.
Rainfall in Koh Chang in May
Koh Chang is in the rainy season in May, with rain on around 20 days and an average of 419 mm (16 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours, often in the late afternoon.
Temperature in Koh Chang in May
Daytime highs in Koh Chang in May reach 31°C (88°F), with nights around 27°C (81°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. At 27°C (81°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.
Sunshine in Koh Chang in May
The month brings about 119 hours of sunlight, offering a comfortable mix of sun and rainy moments.May in Koh Chang has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Koh Chang's climate page.
Koh Chang Temperature in May
Min Temperature
27°C (81°F)
Max Temperature
31°C (88°F)
Chance of Rain
67%
Precipitation
419 mm (16 in)
Rainy days
20 days
Humidity
84% *
Sunshine
119 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Koh Chang typically stay consistent throughout May, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Koh Chang in May
Browse day-by-day weather records for Koh Chang spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Koh Chang historical weather extremes in May
Based on 50 years of weather observations in Koh Chang between 1976 and 2026, these are the recorded extremes.
- Koh Chang recorded its highest May temperature of 39°C (102°F) on May 5, 1979.
- On May 20, 1994, Koh Chang saw its coldest May day with temperatures maxing out at 26°C (79°F).
- Nighttime temperatures dropped to 23°C (73°F) on May 4, 2022, marking the coldest May night on record.
Best Places in Thailand in May
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in May →
perfect weather
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tolerable
unpleasant
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What to Wear in Koh Chang in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Koh Chang in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Koh Chang's climate page.
Temperature Rainfall Sunshine Humidity
See the full Koh Chang climate overview or explore weather in Thailand.
