June is one of the warmer months of the year in Korea, with average highs near 43.8°C and lows around 23.5°C (mean 33.7°C). It is a relatively wet time of year, averaging 189 mm of rainfall and 54% relative humidity across the period.
June is one of the warmer months of the year in Korea. Across 45 years of records, the warmest June in Korea was 1998 — when the month averaged 35.6°C — while the coldest were 2001 and 2020 at 30°C. Typical June days reach 43.8°C with nights near 23.5°C. The long-term trend is cooling, about 0.3°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 34.1°C | 34.1°C | 33.2°C | 34.1°C | 32.4°C | -1.7°C |
| Avg High | 44.8°C | 44.6°C | 43.0°C | 44.3°C | 41.8°C | -3°C |
| Avg Low | 23.5°C | 23.7°C | 23.3°C | 23.8°C | 22.9°C | -0.6°C |
| Avg Rain | 190 mm | 189 mm | 204 mm | 150 mm | 231 mm | +41 mm |
June temperatures in Korea have fallen by about 1.1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 21.5°C (2001) to a record high of 46.6°C (1995).
Rainfall in June is a relatively wet time of year, averaging 189 mm, with a wettest year of 393 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows rose 0°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, June — with days averaging 43.8°C and nights around 23.5°C (mean 33.7°C) and higher rainfall (189 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 | 41.2°C | 23.1°C | 32.2°C | 154 mm | 62% | 2.5 m/s | 4.7 |
| 2024 | 44.6°C | 24.3°C | 34.5°C | 239 mm | 54% | 2.2 m/s | 5.3 |
| 2023 | 43.3°C | 22.9°C | 33.1°C | 170 mm | 47% | 2.3 m/s | 5.7 |
| 2022 | 44.6°C | 23.0°C | 33.8°C | 225 mm | 53% | 2.2 m/s | 5.2 |
| 2021 | 38.8°C | 22.3°C | 30.6°C | 304 mm | 74% | 2.2 m/s | 4.5 |
| 2020 | 38.1°C | 22.0°C | 30.0°C | 291 mm | 73% | 2.3 m/s | 4.1 |
| 2019 | 46.1°C | 24.6°C | 35.3°C | 101 mm | 44% | 2.3 m/s | 5.8 |
| 2018 | 41.4°C | 21.9°C | 31.7°C | 153 mm | 57% | 2.7 m/s | 5.4 |
| 2017 | 45.4°C | 24.0°C | 34.7°C | 203 mm | 55% | 2.1 m/s | 5.4 |
| 2016 | 43.5°C | 24.6°C | 34.1°C | 101 mm | 54% | 2.1 m/s | 5.9 |
| 2015 | 44.7°C | 23.4°C | 34.0°C | 140 mm | 55% | 2.4 m/s | 5.3 |
| 2014 | 46.4°C | 23.8°C | 35.1°C | 107 mm | 47% | 2.8 m/s | 5.9 |
| 2013 | 43.0°C | 22.9°C | 32.9°C | 299 mm | 70% | 2.7 m/s | 4.9 |
| 2012 | 46.5°C | 24.4°C | 35.4°C | 71 mm | 44% | 3.3 m/s | 5.6 |
| 2011 | 41.3°C | 23.1°C | 32.2°C | 243 mm | 63% | 2.9 m/s | 4.7 |
| 2010 | 44.8°C | 25.6°C | 35.2°C | 84 mm | 45% | 2.7 m/s | 6.1 |
| 2009 | 44.4°C | 24.1°C | 34.3°C | 57 mm | 38% | 2.1 m/s | 6.2 |
| 2008 | 42.4°C | 22.6°C | 32.5°C | 329 mm | 70% | 2.6 m/s | 4.3 |
| 2007 | 45.0°C | 24.2°C | 34.6°C | 162 mm | 56% | 3 m/s | 5.3 |
| 2006 | 42.5°C | 24.9°C | 33.7°C | 71 mm | 49% | 2.2 m/s | 5.4 |
| 2005 | 44.8°C | 23.5°C | 34.1°C | 199 mm | 41% | 2.6 m/s | 5.7 |
| 2004 | 43.6°C | 22.4°C | 33.0°C | 332 mm | 67% | 3 m/s | 5.2 |
| 2003 | 46.3°C | 23.5°C | 34.9°C | 176 mm | 48% | 2.9 m/s | 5.8 |
| 2002 | 42.2°C | 22.9°C | 32.6°C | 220 mm | 57% | 2.6 m/s | 5.5 |
| 2001 ❄️ | 38.5°C | 21.5°C | 30.0°C | 275 mm | 73% | 3 m/s | 4.4 |
| 2000 | 40.6°C | 23.2°C | 31.9°C | 216 mm | 66% | 2.5 m/s | 5.4 |
| 1999 | 42.8°C | 22.8°C | 32.8°C | 206 mm | 56% | 2.8 m/s | 5.2 |
| 1998 🔥 | 46.3°C | 25.0°C | 35.6°C | 98 mm | 46% | 2.7 m/s | 5.8 |
| 1997 | 42.2°C | 23.8°C | 33.0°C | 200 mm | 50% | 2.6 m/s | 5.6 |
| 1996 | 45.8°C | 22.6°C | 34.2°C | 149 mm | 54% | 2.9 m/s | 5.6 |
| 1995 | 46.6°C | 23.9°C | 35.2°C | 91 mm | 44% | 2.5 m/s | 5.8 |
| 1994 🌧️ | 45.3°C | 23.2°C | 34.3°C | 393 mm | 63% | 2.4 m/s | 4.7 |
| 1993 | 45.4°C | 24.2°C | 34.8°C | 193 mm | 54% | 2.4 m/s | 5.9 |
| 1992 | 46.0°C | 23.9°C | 34.9°C | 109 mm | 43% | 2.5 m/s | 6.2 |
| 1991 | 42.9°C | 24.0°C | 33.5°C | 140 mm | 58% | 2.8 m/s | 5.8 |
| 1990 | 42.8°C | 23.1°C | 33.0°C | 309 mm | 63% | 2.4 m/s | 5.2 |
| 1989 | 45.0°C | 23.0°C | 34.0°C | 261 mm | 59% | 2.6 m/s | 5.6 |
| 1988 | 45.3°C | 23.0°C | 34.1°C | 278 mm | 53% | 2.3 m/s | 5.5 |
| 1987 | 45.5°C | 24.9°C | 35.2°C | 138 mm | 46% | 2.4 m/s | 6.4 |
| 1986 | 46.0°C | 23.4°C | 34.7°C | 203 mm | 47% | 2.7 m/s | 5.8 |
| 1985 | 43.7°C | 24.5°C | 34.1°C | 87 mm | 40% | 2.9 m/s | 6.5 |
| 1984 | 43.9°C | 23.4°C | 33.7°C | 186 mm | 60% | 2.9 m/s | 5.2 |
| 1983 | 45.3°C | 24.0°C | 34.7°C | 120 mm | 43% | 2.5 m/s | — |
| 1982 | 42.6°C | 22.8°C | 32.7°C | 269 mm | 59% | 2.3 m/s | — |
| 1981 | 45.8°C | 22.4°C | 34.1°C | 167 mm | 45% | 3.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 43.8°C with lows near 23.5°C (mean 33.7°C), based on 45 years of NASA POWER data.
June averages 189 mm of rainfall in Korea, a relatively wet time of year. The wettest on record was 393 mm in 1994.
The hottest June reached 46.6°C in 1995. The coldest dipped to 21.5°C in 2001.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have fallen by about 1.1°C. Daytime highs moved from 44.3°C to 42.5°C and overnight lows from 23.4°C to 23.1°C over the same span.
June is one of the warmer months of the year in Korea and a relatively wet time of year, so plan for around 43.8°C daytime highs and 23.5°C at night.
Not quite — June is the 11th coolest month in Korea, averaging 33.7°C.
For June in Korea, pack light, breathable clothing and sun protection, with typical highs of 43.8°C and lows of 23.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 54% — relatively dry.
Average wind speed in June is 2.6 m/s. The windiest June on record averaged 3.3 m/s (2012).
The wettest June on record was 1994 with 393 mm. On average, June sees 189 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 June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
