Weather in Ko Samui for October 2026
So far, October 2026 in Ko Samui is slightly warmer than the historical average by 1.1 °C.
In general, the average temperature in Ko Samui at the beginning of October is 28.5 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 28.1 °C by the end of October.
Ko Samui experiences heavy rainfall in October, with over 20 rainy days and an average total precipitation 292.8 mm.
Is October a good time to visit Ko Samui? check out the best time to travel to Ko Samui page.
✨ Is October a good time to visit Ko Samui? – Ask the AI Weatherman
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Ko Samui Weather October
Temperatures trend during October in Ko Samui
October weather in Ko Samui day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Oct. |  Light rain | 29° /27° | 3.7 mm | 7 | |
| 2 Oct. | Light rain | 29° /27° | 2.7 mm | 6 | |
| 3 Oct. | Light rain | 29° /27° | 7.2 mm | 5 | |
| 4 Oct. |  Moderate or heavy rain shower | 29° /27° | 7 mm | 5 | |
| 5 Oct. | Moderate or heavy rain shower | 28° /27° | 9.7 mm | 5 | |
| 6 Oct. |  Moderate rain | 28° /27° | 12.5 mm | 6 | |
| 7 Oct. | Moderate or heavy rain shower | 28° /27° | 9 mm | 6 | |
| 8 Oct. | Light rain | 28° /26° | 8.5 mm | 6 | |
| 9 Oct. | Moderate rain | 28° /26° | 10.9 mm | 6 | |
| 10 Oct. | Light rain | 29° /27° | 7.6 mm | 6 | |
| 11 Oct. | Light rain | 29° /26° | 9.2 mm | 6 | |
| 12 Oct. | Moderate or heavy rain shower | 28° /27° | 8.7 mm | 5 | |
| 13 Oct. | Moderate or heavy rain shower | 28° /27° | 5.8 mm | 5 | |
| 14 Oct. | Light rain | 29° /27° | 6.2 mm | 6 | |
| 15 Oct. | Light rain | 29° /27° | 6.9 mm | 5 | |
| 16 Oct. | Moderate rain | 29° /27° | 15 mm | 6 | |
| 17 Oct. | Moderate rain | 28° /27° | 16.6 mm | 6 | |
| 18 Oct. | Moderate rain | 28° /26° | 14.3 mm | 5 | |
| 19 Oct. | Moderate rain | 28° /26° | 14.7 mm | 5 | |
| 20 Oct. | Light rain | 29° /27° | 9.9 mm | 5 | |
| 21 Oct. | Light rain | 29° /27° | 6.7 mm | 5 | |
| 22 Oct. | Light rain | 29° /27° | 4.4 mm | 7 | |
| 23 Oct. | Light rain | 29° /27° | 6.5 mm | 7 | |
| 24 Oct. | Moderate or heavy rain shower | 29° /27° | 9.4 mm | 6 | |
| 25 Oct. | Light rain | 28° /27° | 9.4 mm | 5 | |
| 26 Oct. | Light rain | 28° /26° | 9.5 mm | 5 | |
| 27 Oct. | Moderate rain | 28° /27° | 12.4 mm | 5 | |
| 28 Oct. | Moderate rain | 28° /26° | 16.6 mm | 5 | |
| 29 Oct. | Moderate rain | 28° /26° | 14 mm | 5 | |
| 30 Oct. | Light rain | 28° /27° | 9.1 mm | 5 | |
| 31 Oct. | Light rain | 29° /27° | 2.8 mm | 10.4 | |
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Ko Samui weather in October vs September vs November
| September | October | November | |
|---|---|---|---|
| Weather |  Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 29°/27° | 28°/27° | 28°/26° |
| Rainfall | 165 mm | 293 mm | 474 mm |
| Wind | 25.7 km/h | 18.5 km/h | 21 km/h |
| Humidity | 74% | 75% | 77% |
| Rainy days | 23 days | 27 days | 26 days |
| Dry days | 7 days | 4 days | 4 days |
Planning a trip to Ko Samui? Discover the best time to visit
Ko Samui in October - FAQ
What are the expected maximum and minimum temperatures in Ko Samui during October?
How much rainfall should be expected in Ko Samui during October?
What are the typical wind conditions in Ko Samui during October?
October rainfall patterns in Ko Samui
UV exposure in Ko Samui during October
What to pack to Ko Samui in October?
Warm & sunny · highs around 28 °C, frequent showers
As you prepare for your trip to Ko Samui in October, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Ko Samui, during October, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
🧴 Personal Items
Where is Ko Samui?Get accurate weather forecasts for Ko Samui, located at latitude 9.536 and longitude 99.936. Stay updated with localized weather information tailored for Ko Samui.