15-Day Weather Forecast - Jeju
15-day weather forecast for Jeju: temperatures from 14°C (57°F) to 24°C (75°F). Average daily high 23°C (73°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
Jeju's 15-day outlook ranges from a low of 14°C to a high of 24°C, with an average daytime high near 23°C. That's 3° below the long-term average high of 26°C for this time of year. Air quality is currently Moderate (AQI 53), driven mainly by PM2.5 at 10 μg/m³.
Today vs Normal
The long-term average high for today is 26°C.
27 of the last 28 days with published data ran above normal.
That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Extended Outlook for Jeju
Over the next 15 days, Jeju is forecast to see temperatures ranging from 14°C to 25°C, averaging a daily high of 23°C. The extended outlook indicates significant rainfall totalling 99.1 mm spread across 15 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.