Weather in Ko Samui for January 2025
The forecast for the next days in Ko Samui predicts temperatures to be around 27 °C, close to the historical average.
In general, the average temperature in Ko Samui at the beginning of January is 27.6 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 28 °C by the end of January.
Ko Samui in January brings notable rainfall, with an average of 19 rainy days and a total precipitation of 53.7 mm.
Is January a good time to visit Ko Samui? check out the best time to travel to Ko Samui page.
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Ko Samui in January average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2  27° | 3  27° | 4 28° | 5  28° | ||
| 6 28° | 7 27° | 8 27° | 9 27° | 10 27° | 11 27° | 12 27° |
| 13 27° | 14 27° | 15 27° | 16 27° | 17 27° | 18 28° | 19 28° |
| 20 27° | 21 28° | 22 27° | 23 27° | 24 27° | 25  28° | 26 28° |
| 27 28° | 28 28° | 29 28° | 30 28° | 31 28° |
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Temperatures trend during January in Ko Samui
January weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Jan. | Patchy rain possible | 28° /25° | 2.2 mm | 6 | |
| 2 Jan. | Partly cloudy | 27° /27° | 0 mm | 2 | |
| 3 Jan. | Sunny | 27° /27° | 0 mm | 1.9 | |
| 4 Jan. | Patchy rain possible | 28° /27° | 0.8 mm | 2 | |
| 5 Jan. | Moderate rain | 28° /27° | 10.6 mm | 2.1 | |
| 6 Jan. | Partly cloudy | 28° /27° | 0.1 mm | 2.5 | |
| 7 Jan. | Partly cloudy | 27° /27° | 0 mm | 7 | |
| 8 Jan. | Sunny | 27° /27° | 0 mm | 7 | |
| 9 Jan. | Sunny | 27° /27° | 0 mm | 7 | |
| 10 Jan. | Patchy rain possible | 27° /27° | 4.8 mm | 6 | |
| 11 Jan. | Moderate rain | 27° /27° | 6.3 mm | 6 | |
| 12 Jan. | Patchy rain possible | 27° /27° | 0.6 mm | 6 | |
| 13 Jan. | Patchy rain possible | 27° /26° | 0.3 mm | 6 | |
| 14 Jan. | Partly cloudy | 27° /26° | 0 mm | 7 | |
| 15 Jan. | Patchy rain possible | 27° /26° | 0.2 mm | 6 | |
| 16 Jan. | Patchy rain possible | 27° /25° | 0.1 mm | 7 | |
| 17 Jan. | Patchy rain possible | 27° /25° | 0.9 mm | 6 | |
| 18 Jan. | Patchy rain possible | 28° /25° | 0.9 mm | 6 | |
| 19 Jan. | Patchy rain possible | 28° /24° | 0.7 mm | 6 | |
| 20 Jan. | Patchy rain possible | 27° /25° | 0.4 mm | 6 | |
| 21 Jan. | Patchy rain possible | 28° /25° | 0.3 mm | 6 | |
| 22 Jan. | Patchy rain possible | 27° /25° | 0.4 mm | 6 | |
| 23 Jan. | Patchy rain possible | 27° /25° | 2.1 mm | 6 | |
| 24 Jan. | Patchy rain possible | 27° /25° | 4.4 mm | 6 | |
| 25 Jan. | Cloudy | 28° /25° | 11.5 mm | 6 | |
| 26 Jan. | Patchy rain possible | 28° /25° | 3.8 mm | 6 | |
| 27 Jan. | Patchy rain possible | 28° /25° | 1.9 mm | 6 | |
| 28 Jan. | Patchy rain possible | 28° /25° | 1.1 mm | 6 | |
| 29 Jan. | Patchy rain possible | 28° /25° | 1.3 mm | 6 | |
| 30 Jan. | Patchy rain possible | 28° /25° | 1.9 mm | 6 | |
| 31 Jan. | Cloudy | 28° /25° | 0.3 mm | 6 | |
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Ko Samui in January - FAQ
What to pack to Ko Samui in January?
As you prepare for your trip to Ko Samui in January, 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 January, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
January rainfall patterns in Ko Samui
UV exposure in Ko Samui during January
Quick links
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.