Koh Chang monthly weather and climate
Koh Chang · Eastern Gulf of Thailand
Koh Chang's dry season runs from November to March. Rain increases sharply from May, with heavy rainfall continuing from June to September. Even with little rain in January and February, haze drifting from Cambodia can make the sky look murky. If clear skies matter for your beach holiday, consider air quality as well as rainfall.
Before choosing your travel dates
The key facts list February as the hottest month, while the monthly descriptions point to March and April. The key facts also name June alone as the wettest month, but the table gives 550 mm for each month from June to September. Bear these differences in mind when comparing months.
When are the dry and rainy seasons?
- Best time to visit
- Nov–Mar
- Dry season
- Nov–Mar
- Rainy season
- May–Oct
- Hottest month
- Feb (33°C)
- Wettest month
- Jun (550 mm)
Monthly weather and climate
Use the table below to compare hotter and wetter months. These are historical climate averages, so they do not give a forecast for your travel dates or tell you whether you will be able to swim.
| Month | Travel rating | Temperature | Rainfall | Rainy days | Humidity | Sunshine | Sea conditions |
|---|---|---|---|---|---|---|---|
| January | ++ Very good | 20~31°C | 20 mm | 3 days | 74% | 9 hours | Calm |
| February | ++ Very good | 21~33°C | 50 mm | 5 days | 72% | 9 hours | Calm |
| March | + Good | 23~33°C | 90 mm | 7 days | 74% | 9 hours | Calm |
| April | + Good | 24~33°C | 120 mm | 9 days | 77% | 9 hours | Calm |
| May | - Not recommended | 24~31°C | 350 mm | 20 days | 80% | 8 hours | Moderate |
| June | - Not recommended | 23~30°C | 550 mm | 23 days | 82% | 7 hours | Rough |
| July | - Not recommended | 23~30°C | 550 mm | 21 days | 82% | 7 hours | Rough |
| August | - Not recommended | 23~30°C | 550 mm | 23 days | 83% | 7 hours | Rough |
| September | - Not recommended | 22~29°C | 550 mm | 22 days | 85% | 6 hours | Rough |
| October | - Not recommended | 23~30°C | 300 mm | 20 days | 83% | 7 hours | Moderate |
| November | ++ Very good | 21~30°C | 50 mm | 5 days | 78% | 9 hours | Moderate |
| December | ++ Very good | 20~30°C | 30 mm | 3 days | 72% | 9 hours | Calm |
| Month | Weather and travel advice |
|---|---|
| January | This is the driest month, with cooler temperatures and sunshine. Some haze from forest fires in Cambodia is possible, however. |
| February | The weather is clear and dry, though air pollution drifting from Cambodia can make skies hazy. |
| March | It is warm and mostly dry. This is one of the months with the most sunshine hours. |
| April | The heat remains strong, as in March. Night-time thunderstorms become more frequent. |
| May | The rainy season starts around mid-month and rainfall rises quickly. |
| June | Rainy-season weather continues. Showers mainly fall at night, while afternoons are generally clear. |
| July | This is one of the wettest months. Rain falls regularly, but there are also sunny spells during the day. |
| August | Heavy rain continues, as in July. There are still sunny spells between showers. |
| September | The risk of storms and flooding is at its highest. Heavy rain may change your travel plans. |
| October | The rainy season is drawing to a close, but rainfall varies considerably from year to year. |
| November | Northerly winds arrive as the dry season approaches. This is one of the better months to visit. |
| December | Days are dry and sunny. Northerly winds bring cooler evenings. |