AI-generatedSeoul at a glance
- Best time
- Apr – Jun, Sep – Oct
- Warmest month
- Aug · 28°
- Sunshine a year
- 2,140 h
- Rain a year
- 1,160 mm
- Climate
- Continental
- Time zone
- UTC+9
- Elevation
- 38 m
Climate in Seoul
Seoul has warm to hot summers and cold winters with occasional snow. August is the warmest month with average highs of 28 °C, while January is the coolest at 2 °C. With around 2,140 hours of sunshine a year, Seoul is moderately sunny; May is the sunniest month with 7.2 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Excellent
Best time to visit: April – June, September – October
October is the peak of the typhoon season
Good forSightseeing & walks
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 13°
- Midday, 13:00: about 18°
- Afternoon, 16:00: about 18°
- Evening, 20:00: about 14°
- Night, 23:00: about 13°
06:3917:56
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:23–07:14 · evening 17:21–18:13
- Blue hour
- Morning 06:13–06:23 · evening 18:13–18:23
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Seoul in October?
In October, Seoul is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. The sun shines for around 7 hours a day. Rain falls on about 6 days, adding up to 56 mm. All in all, October is an excellent month for a holiday in Seoul.
More details for October
- Daylight
- 11 h 18 min06:39 – 17:56
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 46 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+9Asia/Seoul
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %62 %
- Few rainy daysweight 30 %86 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- A jumper for the evenings
Sunshine hours in Seoul
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.7 of 11.3 hours of daylight in Seoul, 59 % of the day.
Sunshine hours: measured at the weather station 1 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Seoul
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 10).
Minutes until sunburn in October
- Very fair skin
- about 30 min
- Fair skin
- about 35 min
- Light brown skin
- about 50 min
- Olive skin
- about 65 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Seoul: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Seoul has about 6 rainy days with 56 mm of rain in total.
Wind and clouds in Seoul
How breezy and how cloudy Seoul is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Seoul typically peaks at 15 km/h during the day: Beaufort 3, light breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 46 % of the sky over Seoul: variable cloud, with about 6.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Seoul
How often the day gets hot in Seoul (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Seoul has about 0 hot days, with an average daytime high of 19 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Seoul
Snow is possible in Seoul, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Seoul.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Seoul
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- muggy month (10+ muggy days)
CoolOctober: nights around 10°. A duvet at night and a jumper for the evening. Muggy on about 1 days (dew point 18 °C or more).
The coolest nights are in January (−6°), the warmest in August (23°). Tropical nights of 20 °C and more are the rule from July to August; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in June and in September. Nights fall below 8 °C on average from November to April, so the room should be heated. It is muggy (dew point 18 °C or more) on about 82 days a year, mostly from June to September.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 38 | 2° | −6° | 5.5 h | 4 | 19 |
| FebruaryFeb | 40 | 4° | −4° | 6.0 h | 4 | 22 |
| MarchMar | 44 | 9° | 0° | 6.4 h | 6 | 38 |
| AprilApr | 73 | 15° | 6° | 6.9 h | 7 | 67 |
| MayMay | 86 | 21° | 12° | 7.2 h | 8 | 93 |
| JuneJun | 82 | 25° | 17° | 6.3 h | 8 | 125 |
| JulyJul | 58 | 27° | 22° | 4.0 h | 15 | 298 |
| AugustAug | 58 | 28° | 23° | 5.0 h | 14 | 243 |
| SeptemberSep | 81 | 25° | 18° | 6.0 h | 8 | 131 |
| OctoberOct | 88 | 19° | 10° | 6.7 h | 6 | 56 |
| NovemberNov | 45 | 11° | 3° | 5.2 h | 7 | 47 |
| DecemberDec | 36 | 4° | −4° | 5.3 h | 5 | 22 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
37.57° N, 126.98° E · 38 m · Asia/Seoul
Best time to visit Seoul
The best time to visit Seoul is from April to June and from September to October. For sightseeing, day trips and hiking, conditions are most comfortable from April to June and from September to October. Rain is most frequent from July to August; the wettest month is July with 298 mm.
Seoul through the seasons
How the weather changes over the seasons, with averages for each.
Seoul in spring
Mar – May
Good
- 9–21 °C by day
- 7 h of sun a day
- 21 rainy days in all
Seoul in summer
Jun – Aug
Good
- 25–28 °C by day
- 5 h of sun a day
- 38 rainy days in all
Seoul in autumn
Sep – Nov
Good
- 11–25 °C by day
- 6 h of sun a day
- 21 rainy days in all
Seoul in winter
Dec – Feb
Poor
- 2–4 °C by day
- 6 h of sun a day
- 12 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Seoul for you.
Your best months: May – June, September
Based on the climate averages; tap a month to see its details.
Compare two months in Seoul
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and May bring similar holiday weather to Seoul (score 88 and 86). In May, days are 2 °C warmer than in October. May has 2 more rainy days. The sun shines an hour longer a day in May.
| Month | October | May |
|---|---|---|
| Weather score | 88 | 86 |
| Day high | 19° | 21° |
| Night low | 10° | 12° |
| Sunshine | 6.7 h | 7.2 hbetter |
| Rainy days | 6better | 8 |
| Rainfall | 56 mmbetter | 93 mm |
| Muggy days | 1 | 0better |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr – Jun, Sep – Oct
15–28 °C and not too much rain
Rainy months
Jul – Aug
12 or more rainy days
Seoul month by month
The typical weather for every month at a glance.
38January2° · 6 h
In January, Seoul is freezing cold: daytime highs average 2 °C, and nights often drop below freezing (−6 °C). Expect around 6 hours of sunshine a day. Precipitation, often as snow, falls on about 4 days, totalling 19 mm. Snow falls on about 2 days. All in all, January is not an ideal month for a holiday in Seoul.
Seoul in January40February4° · 6 h
In February, Seoul is cold: daytime highs average 4 °C, and nights often drop below freezing (−4 °C). Expect around 6 hours of sunshine a day. Rain is rare: about 4 days bring 22 mm in total. All in all, February is a so-so month for a holiday in Seoul.
Seoul in February44March9° · 6 h
In March, Seoul is cold: daytime highs average 9 °C, and nights cool down to about 0 °C. Expect around 6 hours of sunshine a day. Rain falls on about 6 days, adding up to 38 mm. All in all, March is a so-so month for a holiday in Seoul.
Seoul in March73April15° · 7 h
In April, Seoul is cool: daytime highs average 15 °C, and nights cool down to about 6 °C. The sun shines for around 7 hours a day. Rain falls on about 7 days, adding up to 67 mm. All in all, April is a good month for a holiday in Seoul.
Seoul in April86May21° · 7 h
In May, Seoul is mild: daytime highs average 21 °C, and nights cool down to about 12 °C. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 93 mm. All in all, May is an excellent month for a holiday in Seoul.
Seoul in May82June25° · 6 h
In June, Seoul is warm: daytime highs average 25 °C, and nights cool down to about 17 °C. Expect around 6 hours of sunshine a day. Rain falls on about 8 days, adding up to 125 mm. All in all, June is an excellent month for a holiday in Seoul.
Seoul in June58July27° · 4 h
In July, Seoul is hot: daytime highs average 27 °C, and even at night it stays warm at around 22 °C. Expect around 4 hours of sunshine a day. It rains often – on about 15 days, adding up to 298 mm. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Seoul.
Seoul in July58August28° · 5 h
In August, Seoul is hot: daytime highs average 28 °C, and even at night it stays warm at around 23 °C. Expect around 5 hours of sunshine a day. It rains often – on about 14 days, adding up to 243 mm. On about 7 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a so-so month for a holiday in Seoul.
Seoul in August81September25° · 6 h
In September, Seoul is warm: daytime highs average 25 °C, and nights cool down to about 18 °C. Expect around 6 hours of sunshine a day. Rain falls on about 8 days, adding up to 131 mm. All in all, September is an excellent month for a holiday in Seoul.
Seoul in September88October19° · 7 h
In October, Seoul is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. The sun shines for around 7 hours a day. Rain falls on about 6 days, adding up to 56 mm. All in all, October is an excellent month for a holiday in Seoul.
Seoul in October45November11° · 5 h
In November, Seoul is cool: daytime highs average 11 °C, and nights cool down to about 3 °C. Expect around 5 hours of sunshine a day. Rain falls on about 7 days, adding up to 47 mm. All in all, November is a so-so month for a holiday in Seoul.
Seoul in November36December4° · 5 h
In December, Seoul is cold: daytime highs average 4 °C, and nights often drop below freezing (−4 °C). Expect around 5 hours of sunshine a day. Rain is rare: about 5 days bring 22 mm in total. All in all, December is not an ideal month for a holiday in Seoul.
Seoul in DecemberSeoul compared
Put Seoul side by side with another destination.
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Seoul vs. Kaesong
In October the holiday weather in Seoul and Kaesong is about equally good (score 88 vs. 89). During the day it is about as warm in Kaesong as in Seoul.
| in October | Seoul | Kaesong |
|---|---|---|
| Holiday score | 88 | 89 |
| Daytime high | 19° | 19° |
| Sunshine | 7 h | 7 h |
| Rainy days | 6 | 6 |
| Best time | Apr – Jun, Sep – Oct | Apr – Jun, Sep – Oct |
Through the year
South Korea in October: the best places
In October, Seoul ranks 5 of 9 destinations in this country.
- Daegu20°90
- 2Gwangju20°90
- 3Busan21°22°90
- 4Daejeon20°89
- 5SeoulThis page19°88
- 6Ulsan20°22°87
- 7Gyeongju20°85
- 8Jeju21°22°82
Planning a trip to Seoul
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Seoul in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Seoul has its best school-holiday weather during October half-term (score 88) and its weakest during the Christmas holidays (score 37).
- 64
Easter holidays
Mar – Apr
Good
- 14 °C by day
- 6.8 h of sun a day
- 7 rainy days a month
- 85
May half-term
May – Jun
Excellent
- 21 °C by day
- 7.0 h of sun a day
- 8 rainy days a month
Good for: Sightseeing & walks
- 58
Summer holidays
Jul – Aug
Fair
- 28 °C by day
- 4.7 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain, Storm season
- 88
October half-term
Oct
ExcellentBest holidays
- 19 °C by day
- 6.7 h of sun a day
- 6 rainy days a month
Good for: Sightseeing & walks
Keep in mind: Storm season
- 37
Christmas holidays
Dec – Jan
Poor
- 3 °C by day
- 5.4 h of sun a day
- 4 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 10 min
- Distance
- 8,880 km
- Time zone
- UTC+9
- Jet lag
- About 8 days (8 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Seoul lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM); not a forecast.
Frequently asked questions about Seoul
When is the best time to visit Seoul?
The best time to visit Seoul is from April to June and from September to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Seoul?
August is the warmest month, with average highs of 28 °C and nights around 23 °C. January is the coolest month at 2 °C.
When does it rain most in Seoul?
Rain is most frequent from July to August; the wettest month is July with 298 mm. The driest month is January with 19 mm.
How many hours of sunshine does Seoul get?
Seoul gets around 2,140 hours of sunshine a year. The sunniest month is May with 7.2 hours a day; in July there are 4.0 hours a day.
What time zone is Seoul in?
Seoul uses the time zone Asia/Seoul, at UTC+9 all year.
How long is the flight from London to Seoul?
A nonstop flight from London to Seoul takes about 11 h 10 min, for a straight-line distance of about 8,880 km.
When is typhoon season in Seoul?
Seoul lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Seoul?
Seoul has its best school-holiday weather during October half-term (score 88) and its weakest during the Christmas holidays (score 37). Holiday ratings (0–100): Easter holidays 64, May half-term 85, Summer holidays 58, October half-term 88, Christmas holidays 37.
Near Seoul
Other destinations close by.
Places with a climate like Seoul
Destinations whose weather through the year is closest to Seoul's – good alternatives.