Weather in Seoul for August 2025
In general, the average temperature in Seoul at the beginning of August is 33.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 29.1 °C by the end of August.
Seoul experiences an exceptionally high level of rainfall in August, with more than 20 rainy days on average.
Is August a good time to visit Seoul? check out the best time to travel to Seoul page.
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Seoul in August average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  33° | 2  33° | 3  33° | ||||
| 4 34° | 5 34° | 6 35° | 7 34° | 8 31° | 9  33° | 10  29° |
| 11 29° | 12 29° | 13 31° | 14 33° | 15 33° | 16 32° | 17 32° |
| 18 32° | 19 33° | 20 32° | 21 30° | 22 29° | 23 27° | 24 29° |
| 25 31° | 26  30° | 27 28° | 28 29° | 29 28° | 30 28° | 31 30° |
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Temperatures trend during August in Seoul
August weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Patchy rain possible | 33° /25° | 0.6 mm | 7 | |
| 2 Aug. | Sunny | 33° /25° | 2 mm | 8 | |
| 3 Aug. | Partly cloudy | 33° /24° | 0 mm | 8 | |
| 4 Aug. | Sunny | 34° /25° | 0.1 mm | 8 | |
| 5 Aug. | Sunny | 34° /26° | 4 mm | 8 | |
| 6 Aug. | Patchy rain possible | 35° /26° | 0.6 mm | 8 | |
| 7 Aug. | Patchy rain possible | 34° /25° | 3.4 mm | 8 | |
| 8 Aug. | Patchy rain possible | 31° /22° | 8.6 mm | 7 | |
| 9 Aug. | Overcast | 33° /23° | 2.5 mm | 8 | |
| 10 Aug. | Moderate or heavy rain shower | 29° /23° | 95.8 mm | 6 | |
| 11 Aug. | Moderate or heavy rain shower | 29° /23° | 18.3 mm | 6 | |
| 12 Aug. | Moderate or heavy rain shower | 29° /23° | 8.8 mm | 6 | |
| 13 Aug. | Overcast | 31° /23° | 3.6 mm | 7 | |
| 14 Aug. | Patchy rain possible | 33° /24° | 6.6 mm | 7 | |
| 15 Aug. | Partly cloudy | 33° /24° | 6.6 mm | 8 | |
| 16 Aug. | Patchy rain possible | 32° /24° | 6 mm | 7 | |
| 17 Aug. | Patchy rain possible | 32° /23° | 5.8 mm | 7 | |
| 18 Aug. | Patchy rain possible | 32° /24° | 4.4 mm | 7 | |
| 19 Aug. | Patchy rain possible | 33° /24° | 2.9 mm | 7 | |
| 20 Aug. | Partly cloudy | 32° /24° | 5 mm | 8 | |
| 21 Aug. | Patchy rain possible | 30° /24° | 44.1 mm | 7 | |
| 22 Aug. | Moderate or heavy rain shower | 29° /23° | 18.6 mm | 6 | |
| 23 Aug. | Moderate or heavy rain shower | 27° /22° | 53.2 mm | 6 | |
| 24 Aug. | Moderate or heavy rain shower | 29° /22° | 24.9 mm | 7 | |
| 25 Aug. | Patchy rain possible | 31° /22° | 0.3 mm | 7 | |
| 26 Aug. | Cloudy | 30° /22° | 1.8 mm | 7 | |
| 27 Aug. | Overcast | 28° /22° | 0.5 mm | 6 | |
| 28 Aug. | Light rain shower | 29° /20° | 1.5 mm | 7 | |
| 29 Aug. | Light rain shower | 28° /21° | 18.3 mm | 7 | |
| 30 Aug. | Light rain shower | 28° /21° | 11.3 mm | 7 | |
| 31 Aug. | Patchy rain possible | 30° /21° | 0.6 mm | 7 | |
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Guide for Seoul in August
In August, Seoul, South Korea experiences the peak of its summer season, characterized by hot and humid conditions. At the beginning of the month, temperatures typically range from 24° during the early morning hours to around 32° in the afternoon.
The humidity levels are high, often exceeding 80%, which can make the heat feel more intense. Rainfall is also common in early August due to the East Asian monsoon season, with frequent afternoon thunderstorms and occasional heavy downpours.
As the month progresses, the weather remains warm but starts to show subtle signs of transitioning towards autumn. By the end of August, temperatures slightly decrease, with morning lows around 22° and afternoon highs reaching approximately 30°.
The humidity levels remain elevated, but the frequency of rainfall begins to diminish compared to the beginning of the month. The skies often clear up more towards late August, offering more sunny days and less cloud cover.
Overall, August in Seoul is marked by hot, humid, and occasionally rainy weather, with a slight cooling trend and reduced precipitation towards the end of the month. Visitors should be prepared for the heat and humidity, and it is advisable to carry an umbrella or raincoat for sudden showers.
Seoul in August - FAQ
What to pack to Seoul in August?
As you prepare for your trip to Seoul in August, 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 Seoul, during August, 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
- Insect Repellent: For destinations with mosquitos or other insects
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