Weather in Jeju Island in September
The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.
Climate Overview
September is an excellent time to visit Jeju Island. Jeju Island has a Warm climate with average yearly highs of 24°C, lows of 20°C, and approximately 18 rainy days per month.
24°C
20°C
18days
12.4h
Is September a good time to visit Jeju Island?
The weather is near-perfect with ideal temperatures and minimal rain.
Daylight
6:18 AM
6:43 PM
Weather by Month
| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | 9°C | 6°C | 12 | Good |
| February | 10°C | 5°C | 11 | Good |
| March | 13°C | 7°C | 9 | Good |
| April | 14°C | 8°C | 7 | Excellent (best) |
| May | 21°C | 15°C | 9 | Excellent (best) |
| June | 25°C | 20°C | 12 | Good |
| July | 25°C | 22°C | 23 | Wet |
| August | 30°C | 26°C | 14 | Wet |
| September | 24°C | 20°C | 18 | Excellent (best) |
| October | 19°C | 15°C | 4 | Excellent (best) |
| November | 15°C | 11°C | 7 | Good |
| December | 9°C | 5°C | 8 | Good |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
What to Pack for September
Layers, a light jacket, comfortable walking shoes, and an umbrella.
Planning a trip to Jeju Island?
Common Questions
Is September a good time to visit Jeju Island? +
September is typically Excellent for visiting Jeju Island, with average highs of 24°C and around 18 rainy days.
What should I pack for Jeju Island in September? +
With highs of 24°C and lows of 20°C in {month}, we recommend: Layers, a light jacket, comfortable walking shoes, and an umbrella.
Does it rain a lot in Jeju Island in September? +
Jeju Island typically sees around 18 rainy days in September.
How many hours of daylight are there in Jeju Island in September? +
In September, Jeju Island gets approximately 12.4 hours of daylight per day.
Is September peak season in Jeju Island? +
Yes, September is peak season in Jeju Island. Expect higher prices and more crowds, but also the best weather.
What is the best month to visit Jeju Island? +
The best months to visit Jeju Island are April, May, September, October, when the weather is optimal for sightseeing.
More Jeju Island Guides
Best Time to Visit
Coming soon
Things to Do
Coming soon
Itineraries
Coming soon
Overview
Complete travel guide for Jeju Island: top things to do, itineraries, and typical costs.