Jeju-si (Jeju City)
August
Weather in Jeju-si for August 2026
Your guide to Jeju-si weather in August - trends and predictions
Until now, August 2026 in Jeju-si is slightly cooler than the historical average by 0.9 °C.
The forecast for the next days in Jeju-si predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in Jeju-si at the beginning of August is 30.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.3 °C by the end of August.
Jeju-si experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 189.8 mm.
Temperatures
Rain 🌧️
1
Dry days
30
Rainy days
0
Snow days
29°/25°
Temperatures
17 km/h
Avg max wind
80 %
Avg humidity
Jeju-si Weather August
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Temperatures trend during August in Jeju-si
See the weather trend as well as the moving average line
August weather in Jeju-si day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Patchy rain possible | 31° /25° | 1.7 mm | 8 | |
| 2 Aug. |  Sunny | 31° /25° | 2.5 mm | 8 | |
| 3 Aug. | Patchy rain possible | 31° /25° | 1.5 mm | 8 | |
| 4 Aug. | Patchy rain possible | 32° /26° | 1.5 mm | 8 | |
| 5 Aug. | Patchy rain possible | 31° /26° | 2.6 mm | 7 | |
| 6 Aug. | Patchy rain possible | 30° /25° | 1.3 mm | 8 | |
| 7 Aug. | Patchy rain possible | 30° /26° | 1.5 mm | 7 | |
| 8 Aug. | Patchy rain possible | 30° /25° | 2.6 mm | 7 | |
| 9 Aug. |  Moderate or heavy rain shower | 30° /25° | 11.6 mm | 6 | |
| 10 Aug. | Patchy rain possible | 29° /24° | 14.6 mm | 6 | |
| 11 Aug. | Light rain shower | 30° /24° | 12 mm | 8 | |
| 12 Aug. | Patchy rain possible | 29° /23° | 10.9 mm | 7 | |
| 13 Aug. | Patchy rain possible | 29° /24° | 11.5 mm | 7 | |
| 14 Aug. | Moderate or heavy rain shower | 29° /24° | 15.1 mm | 7 | |
| 15 Aug. | Moderate or heavy rain shower | 29° /24° | 6.6 mm | 7 | |
| 16 Aug. | Moderate or heavy rain shower | 28° /24° | 16.7 mm | 6 | |
| 17 Aug. | Moderate or heavy rain shower | 28° /24° | 14.8 mm | 6 | |
| 18 Aug. | Patchy rain possible | 28° /24° | 4.1 mm | 6 | |
| 19 Aug. | Patchy rain possible | 30° /24° | 2.8 mm | 7 | |
| 20 Aug. | Patchy rain possible | 30° /25° | 2.7 mm | 10.4 | |
| 21 Aug. |  Overcast | 30° /25° | 0 mm | 10.3 | |
| 22 Aug. | Sunny | 29° /24° | 0 mm | 10.4 | |
| 23 Aug. | Overcast | 30° /24° | 1.8 mm | 10 | |
| 24 Aug. | Overcast | 29° /24° | 0 mm | 7 | |
| 25 Aug. | Sunny | 29° /24° | 0 mm | 7 | |
| 26 Aug. | Sunny | 28° /24° | 0.1 mm | 7 | |
| 27 Aug. | Sunny | 28° /23° | 0 mm | 7 | |
| 28 Aug. | Overcast | 27° /23° | 0 mm | 7 | |
| 29 Aug. | Overcast | 27° /23° | 0 mm | 7 | |
| 30 Aug. | Overcast | 27° /23° | 0 mm | 6 | |
| 31 Aug. | Overcast | 25° /22° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Jeju-si in August 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 Jeju-si forecast closer to your planned date for the most up-to-date weather information.
Change Month
Jeju-si in August - FAQ
What are the expected maximum and minimum temperatures in Jeju-si during August?
During August, expect a variety of temperatures with highs around 29° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Jeju-si during August?
Significant rainfall exceeding 189.8 mm is expected in Jeju-si during August, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Jeju-si during August?
The average wind speed in Jeju-si during August is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Jeju-si
Explore the daily rainfall trends and prepare for Jeju-sis August weather 💧
Typically, Jeju-si has 30 rainy days in August with a total of 189.8 mm of rainfall.
UV exposure in Jeju-si during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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