Surat Thani, Thailand
Ko Samui cruise weather by month
What to expect when your ship is in Ko Samui in any month: temperatures, how often it rains, wind, sea temperature and wave heights.
- 89°Fwarmest average high (April)
- 82°Fcoolest average high (December)
- 37%fewest rain days (March)
- 91%most rain days (October)
Weather in Ko Samui right now
Weather in Ko Samui by month
Average highs run from 82°F (28°C) in December to 89°F (32°C) in April. Rain falls on the fewest days in March and the most in October. Sea temperature and wave heights are for the water just off the port.
| Month | High / low | Rain days | Wind | Sea temp | Typical seas |
|---|---|---|---|---|---|
| January | 84 / 76°F29 / 24°C | 44% | 10 mph16 km/h | 83°F28°C | 1 ft (0.4 m)Smooth; rougher days up to 3 ft |
| February | 85 / 77°F29 / 25°C | 56% | 10 mph17 km/h | 84°F29°C | 1 ft (0.4 m)Smooth; rougher days up to 2 ft |
| March | 87 / 78°F30 / 26°C | 37% | 9 mph15 km/h | 86°F30°C | 1 ft (0.3 m)Smooth; rougher days up to 2 ft |
| April | 89 / 80°F32 / 27°C | 40% | 8 mph14 km/h | 89°F32°C | 1 ft (0.2 m)Smooth; rougher days up to 1 ft |
| May | 88 / 80°F31 / 27°C | 73% | 10 mph16 km/h | 89°F32°C | 1 ft (0.3 m)Smooth; rougher days up to 2 ft |
| June | 88 / 80°F31 / 27°C | 67% | 11 mph18 km/h | 88°F31°C | 1 ft (0.3 m)Smooth; rougher days up to 2 ft |
| July | 88 / 79°F31 / 26°C | 74% | 12 mph19 km/h | 87°F31°C | 1 ft (0.4 m)Smooth; rougher days up to 2 ft |
| August | 88 / 79°F31 / 26°C | 73% | 11 mph18 km/h | 87°F31°C | 1 ft (0.3 m)Smooth; rougher days up to 2 ft |
| September | 86 / 79°F30 / 26°C | 77% | 12 mph19 km/h | 86°F30°C | 1 ft (0.4 m)Smooth; rougher days up to 2 ft |
| October | 84 / 77°F29 / 25°C | 91% | 9 mph15 km/h | 87°F31°C | 1 ft (0.2 m)Smooth; rougher days up to 2 ft |
| November | 83 / 76°F28 / 24°C | 87% | 10 mph16 km/h | 86°F30°C | 1 ft (0.4 m)Smooth; rougher days up to 2 ft |
| December | 82 / 76°F28 / 24°C | 68% | 11 mph18 km/h | 83°F29°C | 2 ft (0.5 m)Smooth; rougher days up to 3 ft |
Check the forecast for your sailing
Upcoming cruises in Ko Samui
13 ships from 10 cruise lines are scheduled here, 20 visits in total. The next 15:
Ships that visit Ko Samui
- WesterdamHolland America Line
- Oceania NauticaOceania Cruises
- Star SeekerWindstar Cruises
- Norwegian JadeNorwegian Cruise Line
- AIDAstellaAIDA Cruises
- Celebrity MillenniumCelebrity Cruises
- Celebrity SolsticeCelebrity Cruises
- Costa DeliziosaCosta Cruises
- Royal PrincessPrincess Cruises
- Sapphire PrincessPrincess Cruises
- Mein Schiff 6TUI Cruises
- Viking OrionViking
- Viking VenusViking
Nearby cruise ports
- Koh Yao NoiThailand
- Ko Phi PhiKrabi, Thailand
- Ko LantaKrabi, Thailand
- PhuketThailand
- LangkawiKedah, Malaysia
- Ko KoodTrat, Thailand
Wave heights are significant wave height on the Douglas sea state scale. What the numbers mean for a cruise. Sources and method are on the about page.