Seoul weather in October
In October, Seoul has an average high of 19 °C65 °F and an average low of 10 °C49 °F, with about 53 mm2.1 in of precipitation. It is the 6th warmest month of the year and ranks 7th for precipitation.
How October compares with other months
Compared with September, October is 6.4 °C11.6 °F cooler on average and drier by 84 mm3.3 in. Compared with November, October is 7.4 °C13.3 °F warmer on average and wetter by 7 mm0.3 in. Daylight lasts about 11.1 hours around the middle of the month. Average relative humidity is 75% and the average cloud amount 44%.
Is October a good time to visit Seoul?
Yes — October is one of the most comfortable months to visit Seoul by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in October
For Seoul in October, pack light layers — T-shirts plus a light sweater or jacket.
October in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Seoul | 1965 | 1049 | 532.1 |
| Hanam | 1966 | 846 | 572.2 |
| Paju | 1865 | 745 | 522.1 |
| Yangju | 1865 | 745 | 522.1 |
| Suwon | 1865 | 1049 | 532.1 |
| Hwaseong-si | 1966 | 1151 | 512.0 |
| Osan | 1966 | 1151 | 512.0 |
| Kaesŏng | 1865 | 846 | 461.8 |
| Chuncheon | 1864 | 745 | 612.4 |
Nearby places that are more than 1 °C1.8 °F cooler: Paju, Yangju, Kaesŏng and Chuncheon.
Other months in Seoul
- January1 °C33 °F / −7 °C20 °F
- February3 °C38 °F / −5 °C23 °F
- March9 °C48 °F / −1 °C30 °F
- April15 °C60 °F / 5 °C40 °F
- May21 °C70 °F / 11 °C52 °F
- June26 °C78 °F / 17 °C62 °F
- July28 °C82 °F / 21 °C70 °F
- August28 °C83 °F / 22 °C71 °F
- September25 °C76 °F / 17 °C62 °F
- October19 °C65 °F / 10 °C49 °F
- November11 °C51 °F / 3 °C37 °F
- December3 °C37 °F / −4 °C24 °F
Frequently asked questions
How warm is Seoul in October?
In October the average high in Seoul is 19 °C (65 °F) and the average low is 10 °C (49 °F).
Does it rain a lot in Seoul in October?
On average about 53 mm (2.1 in) of precipitation falls in October; it ranks 7th of the 12 months.
Is October the warmest month in Seoul?
No. The warmest month in Seoul is August, with an average high of 28 °C (83 °F). The coldest month is January, with an average low of -7 °C (20 °F).
How long is the day in Seoul in October?
In the middle of October the day in Seoul lasts about 11.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Seoul in October?
The average relative humidity in October is about 75%. This is a long-term average for the whole day.
How cloudy is Seoul in October?
On average about 44% of the sky is covered by cloud in October. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.