Ko Samui
July
Weather in Ko Samui for July 2025
Your guide to Ko Samui weather in July - trends and predictions
In general, the average temperature in Ko Samui at the beginning of July is 28.9 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 28.7 °C by the end of July.
Ko Samui experiences an exceptionally high level of rainfall in July, with more than 24 rainy days on average.
Is July a good time to visit Ko Samui? check out the best time to travel to Ko Samui page.
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1
Dry days
30
Rainy days
0
Snow days
29°/27°
Temperatures
29 km/h
Avg max wind
75 %
Avg humidity
Ko Samui in July average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2  29° | 3 29° | 4 29° | 5 28° | 6 29° | |
| 7 29° | 8 29° | 9 29° | 10 27° | 11 27° | 12 28° | 13 28° |
| 14 29° | 15 28° | 16 28° | 17 28° | 18 29° | 19 28° | 20 29° |
| 21 29° | 22  30° | 23 30° | 24 30° | 25 29° | 26 29° | 27 29° |
| 28 28° | 29 29° | 30 28° | 31 29° |
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Temperatures trend during July in Ko Samui
See the weather trend as well as the moving average line
July weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Jul. | Patchy rain possible | 29° /27° | 0.2 mm | 6 | |
| 2 Jul. | Cloudy | 29° /28° | 3.3 mm | 6 | |
| 3 Jul. | Patchy rain possible | 29° /28° | 4.4 mm | 6 | |
| 4 Jul. | Light rain shower | 29° /26° | 17.8 mm | 6 | |
| 5 Jul. | Patchy rain possible | 28° /27° | 1.4 mm | 6 | |
| 6 Jul. | Patchy rain possible | 29° /27° | 0.7 mm | 6 | |
| 7 Jul. | Light rain shower | 29° /27° | 2.6 mm | 6 | |
| 8 Jul. | Patchy rain possible | 29° /27° | 1.9 mm | 6 | |
| 9 Jul. | Patchy rain possible | 29° /27° | 9.6 mm | 6 | |
| 10 Jul. | Light rain shower | 27° /26° | 13 mm | 6 | |
| 11 Jul. | Light rain shower | 27° /26° | 9.5 mm | 6 | |
| 12 Jul. | Light rain shower | 28° /27° | 1.6 mm | 6 | |
| 13 Jul. | Patchy rain possible | 28° /27° | 0.8 mm | 6 | |
| 14 Jul. | Cloudy | 29° /26° | 0.3 mm | 6 | |
| 15 Jul. | Light rain shower | 28° /27° | 2.5 mm | 6 | |
| 16 Jul. | Light rain shower | 28° /26° | 16.4 mm | 6 | |
| 17 Jul. | Light rain shower | 28° /26° | 6.2 mm | 6 | |
| 18 Jul. | Light rain shower | 29° /28° | 4.4 mm | 6 | |
| 19 Jul. | Light rain shower | 28° /27° | 2.9 mm | 6 | |
| 20 Jul. | Light rain shower | 29° /28° | 10 mm | 6 | |
| 21 Jul. | Light rain shower | 29° /28° | 2.6 mm | 6 | |
| 22 Jul. | Light drizzle | 30° /28° | 1.9 mm | 7 | |
| 23 Jul. | Light rain shower | 30° /28° | 1.6 mm | 6 | |
| 24 Jul. | Patchy rain possible | 30° /28° | 0.8 mm | 7 | |
| 25 Jul. | Light rain shower | 29° /28° | 1.5 mm | 6 | |
| 26 Jul. | Light rain shower | 29° /28° | 3.1 mm | 6 | |
| 27 Jul. | Light rain shower | 29° /27° | 12.4 mm | 6 | |
| 28 Jul. | Light rain shower | 28° /27° | 9.4 mm | 6 | |
| 29 Jul. | Light rain shower | 29° /26° | 8 mm | 6 | |
| 30 Jul. | Light rain shower | 28° /27° | 7.5 mm | 6 | |
| 31 Jul. | Light rain shower | 29° /28° | 6.5 mm | 6 | |
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Important Notice
Our weather forecast for Ko Samui in July is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ko Samui forecast closer to your planned date for the most up-to-date weather information.
Ko Samui in July - FAQ
What are the expected maximum and minimum temperatures in Ko Samui during July?
During July, expect a variety of temperatures with highs around 29° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ko Samui during July?
Significant rainfall exceeding 164.7 mm is expected in Ko Samui during July, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Ko Samui during July?
The average wind speed in Ko Samui during July is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Ko Samui in July?
As you prepare for your trip to Ko Samui in July, 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 July, 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
- Sandals/Flip-flops: Comfortable for warm climates
- 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
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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.
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