January 9° · ☂ 8 February 10° · ☂ 8 March 14° · ☂ 8 April 18° · ☂ 8 ★ May22° · ☂ 7 ★ June25° · ☂ 9 July 30° · ☂ 9 August 30° · ☂ 10 September 27° · ☂ 10 ★ October22° · ☂ 6 November 17° · ☂ 8 December 11° · ☂ 9 Jeju in October:cool, rain here and there Jeju, South Korea · Records from 2006 to 2025. Not a forecast.
Mean high 22° Hottest day 29.2° (2025)
Mean low 16° Coldest night 7.4° (2010)
Rain days 6 days 2-14 by year
Rainfall 107mm Daylight 11.9 → 10.9 h
Jeju's 12 months i Best: May, June and October
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Beach Finecool sea and storm risk Sightseeing on foot Finemild, mostly dry and storm risk
Humidity 72% 3 muggy days
Clear days 10 days 6 overcast days
Mean wind 13 km/h Rarely windy
Sea temperature 23.4° 21.8-25.8° by year (last 6)
Sunrise / sunset (15th) 06:38 / 18:01 Daylight 11.9 → 10.9 h
Jeju in October October has the fewest rainy days of the year and the highest share of possible sunshine, so it suits oreum (volcanic cone) walks and the Olle trails. From mid-month the silver grass on Saebyeol Oreum and around Sangumburi crater turns silver. Tangerine-picking farms open around now; October fruit is an extra-early variety and still a little green.
Highs averaged 22°C and lows 16°C, an easy range for walking around all day. 6 rain days in a typical October: noticeable, but most days stayed dry. Averages hide a lot here: one year saw 2, another 14.
The warmest year was 2025, with highs averaging 24.1°C, 2.3°C above normal. Rain days averaged 19 mm each, so when it rained it rained properly.
How long it rained On a rainy day it rained for about 6.0 hours. Rain came at any time of day.
0 3 6 9 12 15 18 21
Typhoons i 4 of the last 20 years had a tropical storm pass within 300 km this month.
Chaba (2016), 62 km away typhoon strength Kong-Rey (2018), 75 km away typhoon strength Mitag (2019), 102 km away tropical storm 1 2 3 4 5 1 6 7 7 10 8 8 9 4 10 1 11 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
October 1 Thursday 1 rain in 6 of 20 yrs 6/20 25° 19° October 2 Friday 2 rain in 6 of 20 yrs 6/20 24° 19° October 3 Saturday 3 rain in 2 of 20 yrs 2/20 24° 18° 1-3 rain on 23% of days 24° 19°
October 4 Sunday 4 rain in 3 of 20 yrs 3/20 24° 18° October 5 Monday 5 rain in 5 of 20 yrs 5/20 23° 18° October 6 Tuesday 6 rain in 6 of 20 yrs 6/20 23° 18° October 7 Wednesday 7 rain in 7 of 20 yrs 7/20 23° 18° October 8 Thursday 8 rain in 6 of 20 yrs 6/20 23° 17° October 9 Friday 9 rain in 3 of 20 yrs 3/20 23° 17° October 10 Saturday 10 rain in 2 of 20 yrs 2/20 23° 18° 4-10 rain on 23% of days 23° 18°
October 11 Sunday 11 rain in 0 of 20 yrs 0/20 23° 17° October 12 Monday 12 rain in 2 of 20 yrs 2/20 22° 16° October 13 Tuesday 13 rain in 1 of 20 yrs 1/20 22° 17° October 14 Wednesday 14 rain in 5 of 20 yrs 5/20 22° 17° October 15 Thursday 15 rain in 4 of 20 yrs 4/20 22° 16° October 16 Friday 16 rain in 6 of 20 yrs 6/20 22° 16° October 17 Saturday 17 rain in 0 of 20 yrs 0/20 21° 15° 11-17 rain on 13% of days 22° 16°
October 18 Sunday 18 rain in 3 of 20 yrs 3/20 21° 15° October 19 Monday 19 rain in 2 of 20 yrs 2/20 22° 15° October 20 Tuesday 20 rain in 2 of 20 yrs 2/20 21° 15° October 21 Wednesday 21 rain in 5 of 20 yrs 5/20 21° 16° October 22 Thursday 22 rain in 8 of 20 yrs 8/20 21° 16° October 23 Friday 23 rain in 5 of 20 yrs 5/20 21° 15° October 24 Saturday 24 rain in 3 of 20 yrs 3/20 20° 14° 18-24 rain on 20% of days 21° 15°
October 25 Sunday 25 rain in 2 of 20 yrs 2/20 20° 14° October 26 Monday 26 rain in 6 of 20 yrs 6/20 20° 14° October 27 Tuesday 27 rain in 4 of 20 yrs 4/20 19° 14° October 28 Wednesday 28 rain in 2 of 20 yrs 2/20 20° 13° October 29 Thursday 29 rain in 3 of 20 yrs 3/20 20° 14° October 30 Friday 30 rain in 0 of 20 yrs 0/20 19° 13° October 31 Saturday 31 rain in 3 of 20 yrs 3/20 19° 13° 25-31 rain on 14% of days 20° 14°
1-3 rain on 23% of days 24° 19° 4-10 rain on 23% of days 23° 18° 11-17 rain on 13% of days 22° 16° 18-24 rain on 20% of days 21° 15° 25-31 rain on 14% of days 20° 14°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
October 1 Friday 1 rain in 6 of 20 yrs 6/20 25° 19° October 2 Saturday 2 rain in 6 of 20 yrs 6/20 24° 19° 1-2 rain on 30% of days 24° 19°
October 3 Sunday 3 rain in 2 of 20 yrs 2/20 24° 18° October 4 Monday 4 rain in 3 of 20 yrs 3/20 24° 18° October 5 Tuesday 5 rain in 5 of 20 yrs 5/20 23° 18° October 6 Wednesday 6 rain in 6 of 20 yrs 6/20 23° 18° October 7 Thursday 7 rain in 7 of 20 yrs 7/20 23° 18° October 8 Friday 8 rain in 6 of 20 yrs 6/20 23° 17° October 9 Saturday 9 rain in 3 of 20 yrs 3/20 23° 17° 3-9 rain on 23% of days 24° 18°
October 10 Sunday 10 rain in 2 of 20 yrs 2/20 23° 18° October 11 Monday 11 rain in 0 of 20 yrs 0/20 23° 17° October 12 Tuesday 12 rain in 2 of 20 yrs 2/20 22° 16° October 13 Wednesday 13 rain in 1 of 20 yrs 1/20 22° 17° October 14 Thursday 14 rain in 5 of 20 yrs 5/20 22° 17° October 15 Friday 15 rain in 4 of 20 yrs 4/20 22° 16° October 16 Saturday 16 rain in 6 of 20 yrs 6/20 22° 16° 10-16 rain on 14% of days 22° 17°
October 17 Sunday 17 rain in 0 of 20 yrs 0/20 21° 15° October 18 Monday 18 rain in 3 of 20 yrs 3/20 21° 15° October 19 Tuesday 19 rain in 2 of 20 yrs 2/20 22° 15° October 20 Wednesday 20 rain in 2 of 20 yrs 2/20 21° 15° October 21 Thursday 21 rain in 5 of 20 yrs 5/20 21° 16° October 22 Friday 22 rain in 8 of 20 yrs 8/20 21° 16° October 23 Saturday 23 rain in 5 of 20 yrs 5/20 21° 15° 17-23 rain on 18% of days 21° 15°
October 24 Sunday 24 rain in 3 of 20 yrs 3/20 20° 14° October 25 Monday 25 rain in 2 of 20 yrs 2/20 20° 14° October 26 Tuesday 26 rain in 6 of 20 yrs 6/20 20° 14° October 27 Wednesday 27 rain in 4 of 20 yrs 4/20 19° 14° October 28 Thursday 28 rain in 2 of 20 yrs 2/20 20° 13° October 29 Friday 29 rain in 3 of 20 yrs 3/20 20° 14° October 30 Saturday 30 rain in 0 of 20 yrs 0/20 19° 13° 24-30 rain on 14% of days 20° 14°
October 31 Sunday 31 rain in 3 of 20 yrs 3/20 19° 13°
October 31 rain on 15% of days 19° 13°
1-2 rain on 30% of days 24° 19° 3-9 rain on 23% of days 24° 18° 10-16 rain on 14% of days 22° 17° 17-23 rain on 18% of days 21° 15° 24-30 rain on 14% of days 20° 14° October 31 rain on 15% of days 19° 13°
Tap another date to change
2006 27mm
2007 none
2008 21mm
2009 none
2010 none
2011 1mm
2012 17mm
2013 none
2014 9mm
2015 none
2016 110mm
2017 none
2018 1mm
2019 none
2020 none
2021 none
2022 none
2023 none
2024 13mm
2025 none
Holidays in October (2026) October 3 to October 5 National Foundation Day long weekendOctober 5 Substitute holiday (National Foundation Day)October 9 to October 11 Hangul Day long weekendOctober 12 Columbus Day 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Holidays in October (2027) October 2 to October 4 National Foundation Day long weekendOctober 4 Substitute holiday (National Foundation Day)October 9 to October 11 Hangul Day long weekendOctober 11 Substitute holiday (Hangul Day)October 11 Columbus Day 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Day by day temperature i 12° 18° 25° 31° 1 8 15 22 29 31
Your trip dates, the past 20 years Trip dates October 1 (Thu) 2 (Fri) 3 (Sat) 4 (Sun) 5 (Mon) 6 (Tue) 7 (Wed) 8 (Thu) 9 (Fri) 10 (Sat) 11 (Sun) 12 (Mon) 13 (Tue) 14 (Wed) 15 (Thu) 16 (Fri) 17 (Sat) 18 (Sun) 19 (Mon) 20 (Tue) 21 (Wed) 22 (Thu) 23 (Fri) 24 (Sat) 25 (Sun) 26 (Mon) 27 (Tue) 28 (Wed) 29 (Thu) 30 (Fri) 31 (Sat) ~ October 1 (Thu) 2 (Fri) 3 (Sat) 4 (Sun) 5 (Mon) 6 (Tue) 7 (Wed) 8 (Thu) 9 (Fri) 10 (Sat) 11 (Sun) 12 (Mon) 13 (Tue) 14 (Wed) 15 (Thu) 16 (Fri) 17 (Sat) 18 (Sun) 19 (Mon) 20 (Tue) 21 (Wed) 22 (Thu) 23 (Fri) 24 (Sat) 25 (Sun) 26 (Mon) 27 (Tue) 28 (Wed) 29 (Thu) 30 (Fri) 31 (Sat) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Trip rain days Month rain days Tap a date to start, tap another to end. Each cell is that date in one year. '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '22 '23 '24 '25
of 20 Dates outside your trip are dimmed.
One row per year, one cell per day. 2006 had 2 rain days, 2024 had 14.
Jeju through the year Month High Low Rain days Rainfall Sea January 9° 4° 8 days 59mm 16° February 10° 4° 8 days 67mm 15° March 14° 7° 8 days 85mm 14° April 18° 11° 8 days 89mm 15° May Good 22° 15° 7 days 93mm 17° June Good 25° 19° 9 days 161mm 21° July 30° 24° 9 days 201mm 25° August 30° 25° 10 days 254mm 28° September 27° 21° 10 days 290mm 27° October Good 22° 16° 6 days 107mm 23° November 17° 11° 8 days 90mm 20° December 11° 6° 9 days 54mm 17°
Common questions Does it rain a lot in Jeju in October? Over the past 20 years October averaged 6 rain days (1 mm or more) out of 31. Individual years ran from 2 in the driest to 14 in the wettest.
What should I wear in Jeju in October? Days averaged 22°C and nights 16°C. Pack a compact umbrella, a light layer for the evenings, and T-shirts.
Can you swim in Jeju in October? Sea surface temperature averaged 23.4°C in October, cool when you first get in. Year to year it ranged 21.8-25.8°C. Check local flags for waves and jellyfish on the day.
Is October a good time to visit Jeju? On warmth and rain days alone, Jeju's easiest months were May, June and October. October ranked first of 12.
How many clear days does Jeju get in October? About 10 clear days (under 30% cloud on average) and 6 overcast days (80% or more).
Previous month Jeju in September Next month Jeju in November Whole year Jeju weather by month Where to go October By country South Korea: all cities this month Compare Compare with Busan Compare Compare with Naha