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Jeju Weather in October
Jeju in October sees pleasant temperatures, with highs around 21°C (70°F) and overnight lows of 17°C (63°F). Rainfall is fairly high at around 82 mm (3.2 in) on average, so pack waterproofs just in case.
Rainfall in Jeju in October
You can expect rain on around 8 days based on historical patterns, with 82 mm (3.2 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Jeju in October
Jeju has excellent weather in October, with days reaching 21°C (70°F) and nights cooling to 17°C (63°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Jeju in October
You can expect a moderate amount of sunlight, with approximately 178 hours. This means a pleasant mix of sun and overcast.If you're inclined towards comfortable temperatures and drier conditions, October is a good time to visit Jeju.
Jeju Temperature in October
Min Temperature
17°C (63°F)
Max Temperature
21°C (70°F)
Chance of Rain
27%
Precipitation
82 mm (3.2 in)
Rainy days
8 days
Humidity
66%
Sunshine
178 hours
Percentage Sunshine
Jeju Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Jeju - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Jeju typically drop from around 24°C (75°F) at the start of October to approximately 19°C (66°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 18°C (64°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather records for Jeju in October
Browse day-by-day weather records for Jeju spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jeju historical weather extremes in October
According to our 49 years of weather records for Jeju, the following extremes were recorded between 1976 and 2025.
- On October 5, 2002, temperatures climbed to 31°C (88°F), marking the warmest October day on record.
- On October 31, 1997, Jeju saw its coldest October day with temperatures maxing out at 12°C (54°F).
- Jeju registered its coldest October night on October 27, 2010, with temperatures dropping to 6°C (43°F).
Best Places in South Korea in October
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Jeju in October
Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Jeju in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Jeju 3-Day Forecast
More climate data for Jeju
Temperature Rainfall Sunshine Humidity
See the full Jeju climate overview or explore weather in South Korea.
Popular in October
Where to go in October - average daytime high across popular destinations.
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