Jejudo
September
Weather in Jejudo for September 2025
Your guide to Jejudo weather in September - trends and predictions
Heavy Rain Advisory - See hour by hour.
So far, September 2025 in Jejudo is slightly warmer than the historical average by 0.6 °C.
Expect cooler weather in the next days in Jejudo with the forecast suggesting a temperature of 25.4 °C, lower than the historical average.
In general, the average temperature in Jejudo at the beginning of September is 28.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.1 °C by the end of September.
Jejudo in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 171.8 mm.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
12
Dry days
18
Rainy days
0
Snow days
27°/23°
Temperatures
21 km/h
Avg max wind
78 %
Avg humidity
Jejudo Weather September
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Temperatures trend during September in Jejudo
See the weather trend as well as the moving average line
September weather in Jejudo day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Torrential rain shower | 27° /23° | 31.1 mm | 6 | |
| 2 Sept. |  Moderate or heavy rain shower | 28° /24° | 7.8 mm | 6 | |
| 3 Sept. |  Patchy rain possible | 30° /23° | 1.8 mm | 7 | |
| 4 Sept. |  Partly cloudy | 27° /23° | 0.1 mm | 7 | |
| 5 Sept. | Partly cloudy | 28° /23° | 0.6 mm | 7 | |
| 6 Sept. |  Sunny | 30° /23° | 0.3 mm | 7 | |
| 7 Sept. | Partly cloudy | 28° /23° | 1.9 mm | 7 | |
| 8 Sept. | Sunny | 28° /22° | 3.7 mm | 7 | |
| 9 Sept. | Patchy rain possible | 26° /22° | 5.7 mm | 6 | |
| 10 Sept. | Light rain shower | 27° /21° | 8.6 mm | 6 | |
| 11 Sept. | Light rain shower | 27° /23° | 11.9 mm | 6 | |
| 12 Sept. |  Cloudy | 30° /24° | 1.8 mm | 7 | |
| 13 Sept. |  Overcast | 28° /24° | 3.5 mm | 6 | |
| 14 Sept. |  Moderate rain | 27° /24° | 1.8 mm | 6 | |
| 15 Sept. | Moderate rain | 30° /25° | 5.9 mm | 1.7 | |
| 16 Sept. | Patchy rain possible | 30° /25° | 1.2 mm | 1.9 | |
| 17 Sept. | Patchy rain possible | 30° /25° | 2.4 mm | 2 | |
| 18 Sept. | Patchy rain possible | 25° /22° | 3.2 mm | 0.8 | |
| 19 Sept. | Moderate rain | 24° /23° | 13 mm | 5 | |
| 20 Sept. | Moderate rain | 23° /22° | 11.5 mm | 5 | |
| 21 Sept. | Patchy rain possible | 24° /21° | 0.5 mm | 5 | |
| 22 Sept. | Patchy rain possible | 24° /21° | 0.2 mm | 5 | |
| 23 Sept. | Patchy rain possible | 25° /22° | 0.4 mm | 5 | |
| 24 Sept. | Patchy rain possible | 26° /24° | 4.4 mm | 6 | |
| 25 Sept. | Moderate rain | 24° /20° | 14.4 mm | 5 | |
| 26 Sept. | Heavy rain | 21° /17° | 23.5 mm | 5 | |
| 27 Sept. | Patchy rain possible | 25° /19° | 0.4 mm | 5 | |
| 28 Sept. | Partly cloudy | 24° /21° | 0.1 mm | 6 | |
| 29 Sept. | Sunny | 25° /21° | 0.4 mm | 7 | |
| 30 Sept. |  Patchy light drizzle | 24° /20° | 0.2 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Jejudo in September 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 Jejudo forecast closer to your planned date for the most up-to-date weather information.
Change Month
Jejudo in September - FAQ
What are the expected maximum and minimum temperatures in Jejudo during September?
During September, expect a variety of temperatures with highs around 27° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Jejudo during September?
Significant rainfall exceeding 171.8 mm is expected in Jejudo during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Jejudo during September?
The average wind speed in Jejudo during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Jejudo
Explore the daily rainfall trends and prepare for Jejudos September weather 💧
UV exposure in Jejudo during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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