🇹🇭 Weather in Koh Samui – month by month
Thailand
Choose a month to see what the weather in Koh Samui was really like over the past 10 years – year by year and day by day.
- January27.6 °C · 13.8 Rain days
- February28.0 °C · 9.1 Rain days
- March29.0 °C · 7.8 Rain days
- April30.1 °C · 12.6 Rain days
- May30.3 °C · 27.5 Rain days
- June29.9 °C · 26.5 Rain days
- July29.6 °C · 26.9 Rain days
- August29.4 °C · 28.6 Rain days
- September29.1 °C · 26.2 Rain days
- October28.7 °C · 28.5 Rain days
- November28.5 °C · 26.1 Rain days
- December28.0 °C · 19.3 Rain days
Climate by month (avg. of the past 10 years)
| Month | Avg. max | Avg. min | Rain days | Precipitation | Sea temperature |
|---|---|---|---|---|---|
| January | 27.6° | 26.3° | 13.8 | 151 mm | – |
| February | 28.0° | 26.6° | 9.1 | 82.4 mm | – |
| March | 29.0° | 27.4° | 7.8 | 53.5 mm | – |
| April | 30.1° | 28.5° | 12.6 | 108 mm | – |
| May | 30.3° | 28.8° | 27.5 | 204 mm | – |
| June | 29.9° | 28.2° | 26.5 | 175 mm | 30.7 °C |
| July | 29.6° | 27.9° | 26.9 | 187 mm | – |
| August | 29.4° | 27.7° | 28.6 | 167 mm | – |
| September | 29.1° | 27.5° | 26.2 | 206 mm | – |
| October | 28.7° | 27.4° | 28.5 | 261 mm | – |
| November | 28.5° | 27.4° | 26.1 | 446 mm | – |
| December | 28.0° | 26.8° | 19.3 | 370 mm | – |
Check your exact travel dates
Choose your travel period – we show the weather for exactly those days.