July is one of the warmer months of the year in Korea, with average highs near 34°C and lows around 22.3°C (mean 28.2°C). It is a relatively wet time of year, averaging 327 mm of rainfall and 84% relative humidity across the period.
July is one of the warmer months of the year in Korea. Across 45 years of records, the warmest July in Korea was 2012 — when the month averaged 30.5°C — while the coldest were 1981 and 1990 at 26.5°C. Typical July days reach 34°C with nights near 22.3°C. The long-term July temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.0°C | 28.3°C | 28.0°C | 28.5°C | 27.6°C | -0.4°C |
| Avg High | 34.0°C | 34.4°C | 33.7°C | 34.9°C | 32.4°C | -1.6°C |
| Avg Low | 22.0°C | 22.3°C | 22.4°C | 22.1°C | 22.7°C | +0.7°C |
| Avg Rain | 338 mm | 339 mm | 302 mm | 327 mm | 328 mm | -10 mm |
July temperatures in Korea have fallen by about 0.5°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 20.7°C (2018) to a record high of 39.1°C (2012).
Rainfall in July is a relatively wet time of year, averaging 327 mm, with a wettest year of 568 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A quieter season to visit Korea
If your dates are flexible, the more temperate months of February and October tend to be the most comfortable for visiting Korea. That said, July — with days averaging 34°C and nights around 22.3°C (mean 28.2°C) and higher rainfall (327 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 🌧️ | 31.4°C | 21.7°C | 26.6°C | 568 mm | 88% | 2.1 m/s | 3.6 |
| 2024 | 33.5°C | 23.3°C | 28.4°C | 335 mm | 85% | 2.2 m/s | 4.1 |
| 2023 | 33.5°C | 23.2°C | 28.3°C | 253 mm | 83% | 2.2 m/s | 4.9 |
| 2022 | 32.7°C | 22.9°C | 27.8°C | 282 mm | 85% | 2.2 m/s | 4.6 |
| 2021 | 31.9°C | 22.9°C | 27.4°C | 283 mm | 86% | 2.4 m/s | 4.1 |
| 2020 | 31.6°C | 22.3°C | 26.9°C | 248 mm | 87% | 2 m/s | 4.2 |
| 2019 | 33.1°C | 22.9°C | 28.0°C | 380 mm | 84% | 2.4 m/s | 4.4 |
| 2018 | 34.0°C | 20.7°C | 27.4°C | 380 mm | 85% | 2.4 m/s | 3.9 |
| 2017 | 32.4°C | 22.5°C | 27.5°C | 433 mm | 87% | 2.5 m/s | 3.6 |
| 2016 | 34.7°C | 22.5°C | 28.6°C | 351 mm | 84% | 2.4 m/s | 3.9 |
| 2015 | 34.8°C | 22.1°C | 28.4°C | 282 mm | 84% | 2.5 m/s | 4.5 |
| 2014 | 39.1°C | 21.6°C | 30.3°C | 288 mm | 76% | 2.4 m/s | 4.6 |
| 2013 | 32.2°C | 22.2°C | 27.2°C | 309 mm | 86% | 2.2 m/s | 4.1 |
| 2012 🔥 | 39.1°C | 21.8°C | 30.5°C | 374 mm | 81% | 2 m/s | 3.7 |
| 2011 | 32.6°C | 21.9°C | 27.3°C | 224 mm | 85% | 2 m/s | 4.7 |
| 2010 | 36.8°C | 23.2°C | 30.0°C | 243 mm | 78% | 2.2 m/s | 4.6 |
| 2009 | 33.7°C | 23.0°C | 28.4°C | 247 mm | 82% | 2.5 m/s | 4.4 |
| 2008 | 31.0°C | 22.7°C | 26.8°C | 372 mm | 88% | 2.3 m/s | 4.2 |
| 2007 | 32.7°C | 20.8°C | 26.8°C | 376 mm | 85% | 2.6 m/s | 4.3 |
| 2006 | 36.1°C | 22.8°C | 29.4°C | 349 mm | 81% | 3.1 m/s | 3.6 |
| 2005 | 32.9°C | 22.2°C | 27.5°C | 392 mm | 86% | 2.6 m/s | 4.3 |
| 2004 | 33.5°C | 22.4°C | 27.9°C | 245 mm | 85% | 2.2 m/s | 4.8 |
| 2003 | 33.1°C | 22.8°C | 28.0°C | 203 mm | 84% | 2 m/s | 4.5 |
| 2002 | 37.3°C | 22.9°C | 30.1°C | 87 mm | 72% | 2.5 m/s | 4.7 |
| 2001 | 32.0°C | 22.0°C | 27.0°C | 531 mm | 90% | 3.4 m/s | 3.5 |
| 2000 | 34.7°C | 21.9°C | 28.3°C | 219 mm | 83% | 2.1 m/s | 4.4 |
| 1999 | 33.8°C | 22.4°C | 28.1°C | 242 mm | 82% | 2.5 m/s | 4.3 |
| 1998 | 34.7°C | 22.9°C | 28.8°C | 262 mm | 85% | 2.6 m/s | 4.5 |
| 1997 | 32.0°C | 22.8°C | 27.4°C | 406 mm | 87% | 2.7 m/s | 4.2 |
| 1996 | 34.6°C | 21.5°C | 28.0°C | 366 mm | 83% | 2.1 m/s | 4.6 |
| 1995 | 38.0°C | 22.0°C | 30.0°C | 369 mm | 79% | 2.3 m/s | 4.7 |
| 1994 | 31.3°C | 22.5°C | 26.9°C | 449 mm | 89% | 2.8 m/s | 4.1 |
| 1993 | 33.9°C | 22.3°C | 28.1°C | 328 mm | 85% | 2.2 m/s | 4.8 |
| 1992 | 38.6°C | 21.6°C | 30.1°C | 294 mm | 76% | 2.4 m/s | 4.9 |
| 1991 | 35.7°C | 22.9°C | 29.3°C | 372 mm | 78% | 2.8 m/s | 4.4 |
| 1990 | 31.2°C | 21.8°C | 26.5°C | 304 mm | 89% | 2.7 m/s | 4 |
| 1989 | 31.8°C | 21.8°C | 26.8°C | 189 mm | 84% | 2.4 m/s | 4.6 |
| 1988 | 31.8°C | 22.9°C | 27.3°C | 306 mm | 86% | 2.2 m/s | 4.4 |
| 1987 | 38.0°C | 21.6°C | 29.8°C | 282 mm | 77% | 2.9 m/s | 4.6 |
| 1986 | 33.1°C | 21.1°C | 27.1°C | 302 mm | 86% | 2.5 m/s | 4.7 |
| 1985 | 36.6°C | 21.6°C | 29.1°C | 377 mm | 82% | 2.4 m/s | 4.3 |
| 1984 | 32.7°C | 22.2°C | 27.5°C | 388 mm | 85% | 2 m/s | 4.6 |
| 1983 | 34.6°C | 22.3°C | 28.5°C | 354 mm | 81% | 2.1 m/s | — |
| 1982 | 36.9°C | 21.7°C | 29.3°C | 402 mm | 83% | 2.4 m/s | — |
| 1981 ❄️ | 30.5°C | 22.4°C | 26.5°C | 445 mm | 88% | 2.5 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 34°C with lows near 22.3°C (mean 28.2°C), based on 45 years of NASA POWER data.
July averages 327 mm of rainfall in Korea, a relatively wet time of year. The wettest on record was 568 mm in 2025.
The hottest July reached 39.1°C in 2012. The coldest dipped to 20.7°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have fallen by about 0.5°C. Daytime highs moved from 34.3°C to 32.6°C and overnight lows from 22°C to 22.8°C over the same span.
July is one of the warmer months of the year in Korea and a relatively wet time of year, so plan for around 34°C daytime highs and 22.3°C at night.
Not quite — July is the 9th coolest month in Korea, averaging 28.2°C.
For July in Korea, pack light, breathable clothing and sun protection, with typical highs of 34°C and lows of 22.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 84% — quite humid.
Average wind speed in July is 2.4 m/s. The windiest July on record averaged 3.4 m/s (2001).
The wettest July on record was 2025 with 568 mm. On average, July sees 327 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
