January 2° · ☂ 3 February 5° · ☂ 3 March 12° · ☂ 5 April 18° · ☂ 7 ★ May23° · ☂ 7 June 28° · ☂ 7 July 30° · ☂ 14 August 30° · ☂ 11 ★ September27° · ☂ 7 October 20° · ☂ 6 November 12° · ☂ 6 December 4° · ☂ 5 Seoul in October:cool, occasional rain Seoul, South Korea · Records from 2006 to 2025. Not a forecast.
Mean high 20° Hottest day 28.6° (2006)
Mean low 11° Coldest night −1.3° (2010)
Rain days 6 days 2-12 by year
Rainfall 58mm Daylight 11.8 → 10.7 h
Seoul's 12 months i Best: May and September
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Goodmild and mostly dry
Humidity 74% 0 muggy days
Clear days 10 days 6 overcast days
Mean wind 8 km/h Rarely windy
Sunrise / sunset (15th) 06:39 / 17:56 Daylight 11.8 → 10.7 h
Seoul in October Rain becomes less frequent and the air turns crisp, which makes this a good month for walking. On Bukhansan the first autumn colour normally appears in mid October and peaks late in the month. The Seoul International Fireworks Festival on the Yeouido Han River park was held on an early October Saturday in many years, but has recently been held in September. The organizer announces the date each year.
October was mild: 20°C by day, 11°C at night, the kind of range where you stop checking the thermometer. Out of 31 days, about 6 brought rain; the rest stayed dry. The driest year, 2020, had 2 rain days; the wettest, 2025, had 12.
October 2006 averaged 23.3°C by day, 3.2°C above the 20-year mean. Cold snaps happened: the record low for October was −1.3°C, set in 2010.
How long it rained On a rainy day it rained for about 5.0 hours. Rain came at any time of day.
0 3 6 9 12 15 18 21
Typhoons i 2 of the last 20 years had a tropical storm pass within 300 km this month.
Mitag (2019), 214 km away tropical storm Kong-Rey (2018), 271 km away tropical storm 1 2 3 4 5 6 3 7 6 8 5 9 2 10 11 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
October 1 Thursday 1 rain in 3 of 20 yrs 3/20 23° 15° October 2 Friday 2 rain in 7 of 20 yrs 7/20 23° 15° October 3 Saturday 3 rain in 6 of 20 yrs 6/20 23° 15° 1-3 rain on 27% of days 23° 15°
October 4 Sunday 4 rain in 4 of 20 yrs 4/20 23° 14° October 5 Monday 5 rain in 4 of 20 yrs 4/20 23° 14° October 6 Tuesday 6 rain in 4 of 20 yrs 4/20 22° 13° October 7 Wednesday 7 rain in 5 of 20 yrs 5/20 22° 13° October 8 Thursday 8 rain in 3 of 20 yrs 3/20 22° 14° October 9 Friday 9 rain in 1 of 20 yrs 1/20 22° 13° October 10 Saturday 10 rain in 9 of 20 yrs 9/20 21° 13° 4-10 rain on 21% of days 22° 13°
October 11 Sunday 11 rain in 6 of 20 yrs 6/20 21° 12° October 12 Monday 12 rain in 0 of 20 yrs 0/20 20° 11° October 13 Tuesday 13 rain in 2 of 20 yrs 2/20 21° 11° October 14 Wednesday 14 rain in 5 of 20 yrs 5/20 20° 11° October 15 Thursday 15 rain in 5 of 20 yrs 5/20 21° 11° October 16 Friday 16 rain in 5 of 20 yrs 5/20 20° 11° October 17 Saturday 17 rain in 3 of 20 yrs 3/20 19° 10° 11-17 rain on 19% of days 20° 11°
October 18 Sunday 18 rain in 5 of 20 yrs 5/20 20° 9° October 19 Monday 19 rain in 5 of 20 yrs 5/20 20° 10° October 20 Tuesday 20 rain in 1 of 20 yrs 1/20 19° 10° October 21 Wednesday 21 rain in 1 of 20 yrs 1/20 20° 10° October 22 Thursday 22 rain in 5 of 20 yrs 5/20 19° 10° October 23 Friday 23 rain in 4 of 20 yrs 4/20 18° 10° October 24 Saturday 24 rain in 2 of 20 yrs 2/20 19° 9° 18-24 rain on 16% of days 19° 10°
October 25 Sunday 25 rain in 4 of 20 yrs 4/20 18° 9° October 26 Monday 26 rain in 3 of 20 yrs 3/20 18° 9° October 27 Tuesday 27 rain in 2 of 20 yrs 2/20 17° 8° October 28 Wednesday 28 rain in 3 of 20 yrs 3/20 18° 7° October 29 Thursday 29 rain in 4 of 20 yrs 4/20 17° 7° October 30 Friday 30 rain in 0 of 20 yrs 0/20 17° 6° October 31 Saturday 31 rain in 6 of 20 yrs 6/20 17° 7° 25-31 rain on 16% of days 17° 8°
1-3 rain on 27% of days 23° 15° 4-10 rain on 21% of days 22° 13° 11-17 rain on 19% of days 20° 11° 18-24 rain on 16% of days 19° 10° 25-31 rain on 16% of days 17° 8°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
October 1 Friday 1 rain in 3 of 20 yrs 3/20 23° 15° October 2 Saturday 2 rain in 7 of 20 yrs 7/20 23° 15° 1-2 rain on 25% of days 23° 15°
October 3 Sunday 3 rain in 6 of 20 yrs 6/20 23° 15° October 4 Monday 4 rain in 4 of 20 yrs 4/20 23° 14° October 5 Tuesday 5 rain in 4 of 20 yrs 4/20 23° 14° October 6 Wednesday 6 rain in 4 of 20 yrs 4/20 22° 13° October 7 Thursday 7 rain in 5 of 20 yrs 5/20 22° 13° October 8 Friday 8 rain in 3 of 20 yrs 3/20 22° 14° October 9 Saturday 9 rain in 1 of 20 yrs 1/20 22° 13° 3-9 rain on 19% of days 23° 14°
October 10 Sunday 10 rain in 9 of 20 yrs 9/20 21° 13° October 11 Monday 11 rain in 6 of 20 yrs 6/20 21° 12° October 12 Tuesday 12 rain in 0 of 20 yrs 0/20 20° 11° October 13 Wednesday 13 rain in 2 of 20 yrs 2/20 21° 11° October 14 Thursday 14 rain in 5 of 20 yrs 5/20 20° 11° October 15 Friday 15 rain in 5 of 20 yrs 5/20 21° 11° October 16 Saturday 16 rain in 5 of 20 yrs 5/20 20° 11° 10-16 rain on 23% of days 21° 11°
October 17 Sunday 17 rain in 3 of 20 yrs 3/20 19° 10° October 18 Monday 18 rain in 5 of 20 yrs 5/20 20° 9° October 19 Tuesday 19 rain in 5 of 20 yrs 5/20 20° 10° October 20 Wednesday 20 rain in 1 of 20 yrs 1/20 19° 10° October 21 Thursday 21 rain in 1 of 20 yrs 1/20 20° 10° October 22 Friday 22 rain in 5 of 20 yrs 5/20 19° 10° October 23 Saturday 23 rain in 4 of 20 yrs 4/20 18° 10° 17-23 rain on 17% of days 19° 10°
October 24 Sunday 24 rain in 2 of 20 yrs 2/20 19° 9° October 25 Monday 25 rain in 4 of 20 yrs 4/20 18° 9° October 26 Tuesday 26 rain in 3 of 20 yrs 3/20 18° 9° October 27 Wednesday 27 rain in 2 of 20 yrs 2/20 17° 8° October 28 Thursday 28 rain in 3 of 20 yrs 3/20 18° 7° October 29 Friday 29 rain in 4 of 20 yrs 4/20 17° 7° October 30 Saturday 30 rain in 0 of 20 yrs 0/20 17° 6° 24-30 rain on 13% of days 18° 8°
October 31 Sunday 31 rain in 6 of 20 yrs 6/20 17° 7°
October 31 rain on 30% of days 17° 7°
1-2 rain on 25% of days 23° 15° 3-9 rain on 19% of days 23° 14° 10-16 rain on 23% of days 21° 11° 17-23 rain on 17% of days 19° 10° 24-30 rain on 13% of days 18° 8° October 31 rain on 30% of days 17° 7°
Tap another date to change
2006 none
2007 none
2008 1mm
2009 none
2010 none
2011 none
2012 1mm
2013 1mm
2014 none
2015 7mm
2016 none
2017 7mm
2018 1mm
2019 none
2020 none
2021 3mm
2022 4mm
2023 none
2024 none
2025 22mm
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 5° 13° 22° 30° 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. 2020 had 2 rain days, 2025 had 12.
What to pack A long-sleeve top and one thin layer cover highs of 20°C. A cardigan or thin jacket was welcome after dark. On average 2 nights still dipped below 5°C.
Rain was occasional. A compact umbrella in the bag is enough.
Common questions Does it rain a lot in Seoul 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 12 in the wettest.
What should I wear in Seoul in October? Days averaged 20°C and nights 11°C. Pack a compact umbrella, a light layer for the evenings, and T-shirts.
Is October a good time to visit Seoul? On warmth and rain days alone, Seoul's easiest months were May and September. October ranked 3 of 12, close to the top.
How many clear days does Seoul get in October? About 10 clear days (under 30% cloud on average) and 6 overcast days (80% or more).
Previous month Seoul in September Next month Seoul in November Whole year Seoul weather by month Where to go October By country South Korea: all cities this month Compare Compare with Busan Compare Compare with Tokyo