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 29.7 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 29.4 °C by the end of July.
Ko Samui experiences heavy rainfall in July, with over 20 rainy days and an average total precipitation 138.4 mm.
Is July a good time to visit Ko Samui? check out the best time to travel to Ko Samui page.
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Temperatures
Rain 🌧️
More
1
Dry days
30
Rainy days
0
Snow days
29°/27°
Temperatures
24 km/h
Avg max wind
74 %
Avg humidity
Ko Samui in July average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 30° | 3 30° | 4  30° | 5 29° | 6 30° | |
| 7 30° | 8 30° | 9 28° | 10 28° | 11 28° | 12 29° | 13 29° |
| 14  29° | 15 29° | 16 29° | 17  29° | 18 30° | 19 29° | 20 30° |
| 21 29° | 22 30° | 23 30° | 24  30° | 25 29° | 26  30° | 27 29° |
| 28 29° | 29 30° | 30 29° | 31 30° |
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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° /26° | 6.1 mm | 6 | |
| 2 Jul. | Patchy rain possible | 30° /27° | 2.3 mm | 6 | |
| 3 Jul. | Patchy rain possible | 30° /27° | 1.4 mm | 6 | |
| 4 Jul. | Moderate or heavy rain shower | 30° /27° | 7 mm | 6 | |
| 5 Jul. | Patchy rain possible | 29° /27° | 1.8 mm | 6 | |
| 6 Jul. | Patchy rain possible | 30° /27° | 2.3 mm | 6 | |
| 7 Jul. | Patchy rain possible | 30° /27° | 1.7 mm | 7 | |
| 8 Jul. | Moderate or heavy rain shower | 30° /26° | 9.8 mm | 7 | |
| 9 Jul. | Moderate or heavy rain shower | 28° /26° | 10.8 mm | 6 | |
| 10 Jul. | Moderate or heavy rain shower | 28° /26° | 9.9 mm | 6 | |
| 11 Jul. | Patchy rain possible | 28° /26° | 7.3 mm | 6 | |
| 12 Jul. | Moderate or heavy rain shower | 29° /26° | 5.3 mm | 6 | |
| 13 Jul. | Patchy rain possible | 29° /26° | 1.4 mm | 6 | |
| 14 Jul. | Cloudy | 29° /26° | 0.8 mm | 6 | |
| 15 Jul. | Moderate rain at times | 29° /26° | 3 mm | 6 | |
| 16 Jul. | Cloudy | 29° /26° | 6.5 mm | 6 | |
| 17 Jul. | Partly cloudy | 29° /26° | 4.1 mm | 6 | |
| 18 Jul. | Partly cloudy | 30° /27° | 2.9 mm | 7 | |
| 19 Jul. | Cloudy | 29° /27° | 2.5 mm | 6 | |
| 20 Jul. | Patchy rain possible | 30° /27° | 8.5 mm | 6 | |
| 21 Jul. | Cloudy | 29° /26° | 3.1 mm | 6 | |
| 22 Jul. | Moderate or heavy rain shower | 30° /27° | 6 mm | 7 | |
| 23 Jul. | Moderate or heavy rain shower | 30° /27° | 4.4 mm | 6 | |
| 24 Jul. | Heavy rain at times | 30° /27° | 1.2 mm | 6 | |
| 25 Jul. | Cloudy | 29° /27° | 1.3 mm | 6 | |
| 26 Jul. | Overcast | 30° /27° | 2.9 mm | 6 | |
| 27 Jul. | Patchy rain possible | 29° /27° | 6.6 mm | 6 | |
| 28 Jul. | Moderate or heavy rain shower | 29° /27° | 4.2 mm | 6 | |
| 29 Jul. | Moderate rain at times | 30° /27° | 4.8 mm | 6 | |
| 30 Jul. | Moderate rain at times | 29° /26° | 5.3 mm | 7 | |
| 31 Jul. | Moderate or heavy rain shower | 30° /27° | 3.4 mm | 7 | |
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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 138.4 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 24 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
July rainfall patterns in Ko Samui
Explore the daily rainfall trends and prepare for Ko Samuis July weather 💧
UV exposure in Ko Samui during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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