Best time to visit Koh Chang
The best time to visit Koh Chang is during the dry season from late-November to early-March, when you can expect sunny and dry weather with an average temperature of 27°C (80°F) and a night-time low of 24°C (75°F).
March and April are also good months to visit, with sunny and progressively warmer weather, despite the onset of the first short pre-monsoon showers.
Koh Chang weather
Ko Chang has a hot tropical climate with a short dry season.
What is the best month to visit Koh Chang?
December, January and February are the best months to visit Koh Chang – since these months see the least rainfall during the year.
November, March and April are good alternative months, despite the prospect of additional rainfall.
Which is the hottest month in Koh Chang?
May is the hottest month in Koh Chang with an average high of 31°C (87°F), with high heat and humidity, and a night-time low of 26°C (78°F).
The hot season in Koh Chang lasts from mid-April to mid-May, with an average daily high temperature above 31°C (87°F).
Which is the coolest month in Koh Chang?
The coldest month of the year in Koh Chang is January, with an average low of 24°C (75°F) and high of 30°C (86°F).
The cool season lasts from early-February through to mid-March, with an average daily high temperature below 30°C (86°F).
When is it sunniest in Koh Chang?
The sunniest time of year in Koh Chang is usually December with around nine hours of bright sunshine every day – that's on average 74% of daylight hours.
What is the humidity in Koh Chang?
Koh Chang experiences little significant seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 80% – 85% over the course of the year. Typically, it's humid all year round.
The more humid time of year lasts from February through November, when you can expect the comfort level to be muggy at least 75% of the time.
The months with the most muggy days in Koh Chang are March through October, when every day in each month is muggy or worse.
We derive the humidity comfort level from the dew point temperature, which measures moisture content in the air. A higher dew point feels muggy and uncomfortable.
December and January are only slightly more comfortable, with around 23 days in each month that are muggy.
When is the sea warmest in Koh Chang?
The sea is usually at its warmest in Koh Chang in May when the water temperature reaches 30°C (86°F), which is very pleasant for swimming
The sea in Koh Chang is warm enough to swim year-round.
Which month has the most rain in Koh Chang?
August has the most rain in Koh Chang with 633mm (25in) of rainfall on average, distributed across 24 days.
The wet season typically lasts from May through October, with a greater than 42% chance of a given day being a wet day. The months of September through November receive the most rainfall.
Rain falls throughout the year in Koh Chang.
The drier season lasts from late-October to early-May. The month with the fewest wet days in Koh Chang is December, with 13mm of rainfall on average, distributed across 2 days.
Which is the windiest month in Koh Chang?
The windiest month of the year in Koh Chang is August, with an average hourly wind speed of 14 kilometres per hour (8.7 mph; 7.6 knots).
The windy part of the year lasts from late-May through to mid-September, with average wind speeds of more than 12 kilometres per hour (7.5 mph; 6.5 knots).
The less-windy time of year lasts from mid-September through to mid-May. The calmest month of the year in Koh Chang is January, with an average hourly wind speed of 9 kilometres per hour (5.6 mph; 5 knots).
The predominant average hourly wind direction varies throughout the year in Koh Chang.
Koh Chang Weather Averages
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average high temperature (°C) | |||||||||||
| 30 | 30 | 30 | 31 | 31 | 30 | 30 | 29 | 29 | 30 | 31 | 30 |
| Average low temperature (°C) | |||||||||||
| 24 | 24 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 24 |
| Average daily sunshine (hrs) | |||||||||||
| 9 | 8 | 8 | 8 | 6 | 5 | 5 | 5 | 5 | 6 | 8 | 9 |
| Average daily daylight (hrs) | |||||||||||
| 11 | 12 | 12 | 12 | 12 | 13 | 12 | 12 | 12 | 12 | 11 | 11 |
| Comfort level | |||||||||||
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| Average relative humidity (%) | |||||||||||
| 85 | 85 | 85 | 80 | 80 | 80 | 80 | 80 | 80 | 85 | 85 | 85 |
| UV Index (max) | |||||||||||
| 10 | 11+ | 11+ | 11+ | 11+ | 11+ | 11+ | 11+ | 11+ | 11+ | 10 | 10 |
| Average days of rainfall (≥1mm) | |||||||||||
| 2 | 4 | 6 | 9 | 18 | 23 | 24 | 24 | 22 | 17 | 6 | 2 |
| Average monthly rainfall (mm) | |||||||||||
| 20 | 45 | 72 | 122 | 325 | 593 | 631 | 633 | 556 | 284 | 68 | 13 |
| Average wind speed (km/h) | |||||||||||
| 9 | 9 | 9 | 9 | 11 | 13 | 14 | 14 | 12 | 9 | 10 | 11 |
| Average sea temperature (°C) | |||||||||||
| 28 | 28 | 29 | 30 | 30 | 29 | 29 | 29 | 28 | 29 | 29 | 28 |
| Koh Chang, Thailand | |||||||||||
Holiday seasons
High Season: From November to March, especially during Christmas and New Year holidays.
Low Season: The wet season, from May to October, also known as the 'green season', brings less crowds, cheaper accommodation and, as the locals are quick to point out, it does not rain all day.
Source: Meteorological data for Koh Chang is based on weather statistics gathered for the 36-year period 1980 to 2016 by the Thai Meteorological Department at the closest weather station: Chanthaburi, located about 70km (43mi) north of Koh Chang.
Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
Latest update: Best time to visit Koh Chang: 18 May, 2024
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.
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