October is one of the cooler months of the year in Korea, with average highs near 30.2°C and lows around 13.9°C (mean 22.1°C). It is one of the drier months, averaging 57 mm of rainfall and 77% relative humidity across the period.
October is one of the cooler months of the year in Korea. Across 45 years of records, the warmest October in Korea was 2000 — when the month averaged 25.5°C — while the coldest was 1983 at 20.2°C. Typical October days reach 30.2°C with nights near 13.9°C. The long-term trend is warming, about 0.2°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.7°C | 21.7°C | 22.4°C | 22.3°C | 22.2°C | +0.5°C |
| Avg High | 30.4°C | 29.8°C | 30.8°C | 30.0°C | 30.2°C | -0.2°C |
| Avg Low | 13.0°C | 13.6°C | 13.9°C | 14.7°C | 14.3°C | +1.3°C |
| Avg Rain | 41 mm | 59 mm | 46 mm | 74 mm | 70 mm | +29 mm |
October temperatures in Korea have risen by about 0.8°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 10.4°C (1983) to a record high of 36°C (2000).
Rainfall in October is one of the drier months, averaging 57 mm, with a wettest year of 360 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Korea
October is one of the best times to visit Korea. Expect days averaging 30.2°C and nights around 13.9°C (mean 22.1°C) — cooler than Korea's yearly average — with moderate rainfall (57 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 30.5°C | 16.4°C | 23.4°C | 130 mm | 84% | 1.4 m/s | 3.9 |
| 2024 | 30.5°C | 16.3°C | 23.4°C | 13 mm | 84% | 1.4 m/s | 4.2 |
| 2023 | 30.0°C | 13.9°C | 21.9°C | 40 mm | 76% | 1.5 m/s | 4.8 |
| 2022 | 29.2°C | 12.7°C | 20.9°C | 112 mm | 84% | 1.5 m/s | 4.7 |
| 2021 | 30.4°C | 11.5°C | 20.9°C | 36 mm | 82% | 1.3 m/s | 4.9 |
| 2020 | 30.3°C | 15.0°C | 22.7°C | 87 mm | 80% | 1.3 m/s | 4.5 |
| 2019 | 28.7°C | 16.3°C | 22.5°C | 34 mm | 85% | 1.4 m/s | 4.1 |
| 2018 | 31.0°C | 14.9°C | 22.9°C | 4 mm | 69% | 1.3 m/s | 5.3 |
| 2017 | 31.3°C | 16.3°C | 23.8°C | 28 mm | 77% | 1.2 m/s | 4.8 |
| 2016 | 29.5°C | 13.4°C | 21.4°C | 56 mm | 77% | 1.3 m/s | 5.1 |
| 2015 | 30.8°C | 16.2°C | 23.5°C | 33 mm | 72% | 1.1 m/s | 5.1 |
| 2014 | 29.9°C | 15.5°C | 22.7°C | 146 mm | 79% | 1.5 m/s | 4.7 |
| 2013 🌧️ | 29.1°C | 15.3°C | 22.2°C | 360 mm | 86% | 1.9 m/s | 3.9 |
| 2012 | 30.2°C | 11.2°C | 20.7°C | 20 mm | 74% | 1.2 m/s | 5.2 |
| 2011 | 30.0°C | 14.1°C | 22.1°C | 5 mm | 76% | 1.2 m/s | 5.2 |
| 2010 | 29.9°C | 13.3°C | 21.6°C | 52 mm | 81% | 1.5 m/s | 4.6 |
| 2009 | 31.8°C | 12.4°C | 22.1°C | 67 mm | 65% | 1.6 m/s | 5.1 |
| 2008 | 30.5°C | 13.7°C | 22.1°C | 7 mm | 76% | 1.2 m/s | 5.2 |
| 2007 | 29.2°C | 14.2°C | 21.7°C | 18 mm | 76% | 1.3 m/s | 5.2 |
| 2006 | 31.3°C | 15.7°C | 23.5°C | 34 mm | 75% | 1.1 m/s | 5.3 |
| 2005 | 30.1°C | 13.3°C | 21.7°C | 73 mm | 82% | 1.5 m/s | 4.7 |
| 2004 | 29.5°C | 13.7°C | 21.6°C | 38 mm | 73% | 1.3 m/s | 5.2 |
| 2003 | 29.8°C | 13.9°C | 21.8°C | 124 mm | 84% | 1.9 m/s | 4.2 |
| 2002 | 30.1°C | 13.1°C | 21.6°C | 30 mm | 73% | 1.1 m/s | 5.2 |
| 2001 | 30.1°C | 14.2°C | 22.2°C | 68 mm | 82% | 1.5 m/s | 4.7 |
| 2000 🔥 | 36.0°C | 15.0°C | 25.5°C | 2 mm | 56% | 1.4 m/s | 5.5 |
| 1999 | 29.4°C | 13.0°C | 21.2°C | 77 mm | 84% | 1.8 m/s | 5 |
| 1998 | 30.5°C | 14.0°C | 22.2°C | 55 mm | 85% | 1.6 m/s | 4.8 |
| 1997 | 28.7°C | 13.7°C | 21.2°C | 93 mm | 78% | 1 m/s | 4.9 |
| 1996 | 29.9°C | 14.7°C | 22.3°C | 57 mm | 78% | 1.5 m/s | 5.3 |
| 1995 | 30.4°C | 11.9°C | 21.2°C | 25 mm | 78% | 1.4 m/s | 5.1 |
| 1994 | 29.8°C | 15.1°C | 22.4°C | 60 mm | 78% | 1.3 m/s | 5.1 |
| 1993 | 30.3°C | 13.6°C | 22.0°C | 40 mm | 77% | 1.2 m/s | 5.4 |
| 1992 | 30.5°C | 13.2°C | 21.8°C | 25 mm | 77% | 1.6 m/s | 5.3 |
| 1991 | 29.4°C | 13.4°C | 21.4°C | 21 mm | 74% | 1.3 m/s | 5.4 |
| 1990 | 29.3°C | 13.6°C | 21.4°C | 139 mm | 81% | 1.6 m/s | 5.1 |
| 1989 | 31.2°C | 13.5°C | 22.4°C | 7 mm | 67% | 1.3 m/s | 5.8 |
| 1988 | 30.2°C | 13.7°C | 21.9°C | 10 mm | 68% | 1.5 m/s | 5.4 |
| 1987 | 31.3°C | 12.6°C | 22.0°C | 85 mm | 77% | 1.2 m/s | 5.1 |
| 1986 | 32.0°C | 12.4°C | 22.2°C | 27 mm | 65% | 1.4 m/s | 5.6 |
| 1985 | 29.5°C | 11.1°C | 20.3°C | 73 mm | 81% | 1.7 m/s | 5.2 |
| 1984 | 29.7°C | 13.0°C | 21.4°C | 15 mm | 73% | 1.6 m/s | 4.7 |
| 1983 ❄️ | 29.9°C | 10.4°C | 20.2°C | 60 mm | 80% | 1.5 m/s | — |
| 1982 | 29.8°C | 15.7°C | 22.8°C | 78 mm | 75% | 1.1 m/s | — |
| 1981 | 29.6°C | 14.4°C | 22.0°C | 10 mm | 72% | 1.3 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 30.2°C with lows near 13.9°C (mean 22.1°C), based on 45 years of NASA POWER data.
October averages 57 mm of rainfall in Korea, one of the drier months. The wettest on record was 360 mm in 2013.
The hottest October reached 36°C in 2000. The coldest dipped to 10.4°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 0.8°C. Daytime highs moved from 29.7°C to 30.1°C and overnight lows from 12.9°C to 14.2°C over the same span.
October is one of the cooler months of the year in Korea and one of the drier months, so plan for around 30.2°C daytime highs and 13.9°C at night.
Not quite — October is the 5th coolest month in Korea, averaging 22.1°C.
For October in Korea, pack light, breathable clothing and sun protection, with typical highs of 30.2°C and lows of 13.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 77% — quite humid.
Average wind speed in October is 1.4 m/s. The windiest October on record averaged 1.9 m/s (2003).
The wettest October on record was 2013 with 360 mm. On average, October sees 57 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Korea behaves each October, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for October specifically, along with year-by-year records and how the month has changed over the decades.
