June is one of the warmer months of the year in Korea, with average highs near 37.3°C and lows around 26.4°C (mean 31.9°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 Junes in Korea were 2005 and 2019 — when the month averaged 34°C — while the coldest was 2020 at 28.3°C. Typical June days reach 37.3°C with nights near 26.4°C. The long-term trend is cooling, about 0.2°C per decade.
June is a relatively wet time of year in Korea, averaging 189 mm of rainfall. The wettest June on record was 1994 with 393 mm, while the driest was 2009 at 57 mm.
Relative humidity in Korea during June averages 54%. The most humid June was 2021 at 74%, and the least humid was 2009 at 38%.
June receives about 5.4 kWh/m²/day of solar energy in Korea. The sunniest June was 1985 at 6.5 kWh/m²/day, and the cloudiest was 2020 at 4.1.
Average wind speed in Korea during June is 2.6 m/s. The windiest June was 2012 at 3.3 m/s, while the calmest were 2009, 2016 and 2017 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.3°C | 32.0°C | 31.4°C | 32.3°C | 30.7°C | -1.6°C |
| Avg High | 38.1°C | 37.5°C | 36.6°C | 37.8°C | 35.8°C | -2.3°C |
| Avg Low | 26.6°C | 26.4°C | 26.2°C | 26.8°C | 25.7°C | -0.9°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 0.3°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 November tend to be the most comfortable for visiting Korea. That said, June — with days averaging 37.3°C and nights around 26.4°C (mean 31.9°C) and higher rainfall (189 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 35.1°C | 30.2°C | 25.2°C | 41.2°C | 23.1°C | 154 mm | 62% | 2.5 m/s | 4.7 |
| 2024 | 38.5°C | 32.6°C | 26.8°C | 44.6°C | 24.3°C | 239 mm | 54% | 2.2 m/s | 5.3 |
| 2023 | 38.5°C | 32.8°C | 27.1°C | 43.3°C | 22.9°C | 170 mm | 47% | 2.3 m/s | 5.7 |
| 2022 | 37.0°C | 31.7°C | 26.4°C | 44.6°C | 23.0°C | 225 mm | 53% | 2.2 m/s | 5.2 |
| 2021 | 33.0°C | 28.6°C | 24.3°C | 38.8°C | 22.3°C | 304 mm | 74% | 2.2 m/s | 4.5 |
| 2020 ❄️ | 32.4°C | 28.3°C | 24.2°C | 38.1°C | 22.0°C | 291 mm | 73% | 2.3 m/s | 4.1 |
| 2019 | 40.2°C | 34.0°C | 27.8°C | 46.1°C | 24.6°C | 101 mm | 44% | 2.3 m/s | 5.8 |
| 2018 | 37.0°C | 31.5°C | 25.9°C | 41.4°C | 21.9°C | 153 mm | 57% | 2.7 m/s | 5.4 |
| 2017 | 37.5°C | 32.2°C | 26.8°C | 45.4°C | 24.0°C | 203 mm | 55% | 2.1 m/s | 5.4 |
| 2016 | 37.9°C | 32.3°C | 26.8°C | 43.5°C | 24.6°C | 101 mm | 54% | 2.1 m/s | 5.9 |
| 2015 | 37.1°C | 31.7°C | 26.4°C | 44.7°C | 23.4°C | 140 mm | 55% | 2.4 m/s | 5.3 |
| 2014 | 39.8°C | 33.6°C | 27.5°C | 46.4°C | 23.8°C | 107 mm | 47% | 2.8 m/s | 5.9 |
| 2013 | 33.7°C | 29.5°C | 25.3°C | 43.0°C | 22.9°C | 299 mm | 70% | 2.7 m/s | 4.9 |
| 2012 | 39.6°C | 33.6°C | 27.7°C | 46.5°C | 24.4°C | 71 mm | 44% | 3.3 m/s | 5.6 |
| 2011 | 35.5°C | 30.7°C | 26.0°C | 41.3°C | 23.1°C | 243 mm | 63% | 2.9 m/s | 4.7 |
| 2010 | 39.5°C | 33.6°C | 27.7°C | 44.8°C | 25.6°C | 84 mm | 45% | 2.7 m/s | 6.1 |
| 2009 | 40.4°C | 33.9°C | 27.4°C | 44.4°C | 24.1°C | 57 mm | 38% | 2.1 m/s | 6.2 |
| 2008 | 33.3°C | 29.2°C | 25.1°C | 42.4°C | 22.6°C | 329 mm | 70% | 2.6 m/s | 4.3 |
| 2007 | 37.0°C | 31.8°C | 26.6°C | 45.0°C | 24.2°C | 162 mm | 56% | 3 m/s | 5.3 |
| 2006 | 37.7°C | 32.3°C | 27.0°C | 42.5°C | 24.9°C | 71 mm | 49% | 2.2 m/s | 5.4 |
| 2005 🔥 | 39.9°C | 34.0°C | 28.1°C | 44.8°C | 23.5°C | 199 mm | 41% | 2.6 m/s | 5.7 |
| 2004 | 34.9°C | 30.1°C | 25.2°C | 43.6°C | 22.4°C | 332 mm | 67% | 3 m/s | 5.2 |
| 2003 | 38.5°C | 32.7°C | 27.0°C | 46.3°C | 23.5°C | 176 mm | 48% | 2.9 m/s | 5.8 |
| 2002 | 37.1°C | 31.6°C | 26.0°C | 42.2°C | 22.9°C | 220 mm | 57% | 2.6 m/s | 5.5 |
| 2001 | 32.5°C | 28.4°C | 24.2°C | 38.5°C | 21.5°C | 275 mm | 73% | 3 m/s | 4.4 |
| 2000 | 34.7°C | 29.9°C | 25.0°C | 40.6°C | 23.2°C | 216 mm | 66% | 2.5 m/s | 5.4 |
| 1999 | 36.4°C | 30.8°C | 25.2°C | 42.8°C | 22.8°C | 206 mm | 56% | 2.8 m/s | 5.2 |
| 1998 | 39.2°C | 33.6°C | 27.9°C | 46.3°C | 25.0°C | 98 mm | 46% | 2.7 m/s | 5.8 |
| 1997 | 37.2°C | 32.0°C | 26.7°C | 42.2°C | 23.8°C | 200 mm | 50% | 2.6 m/s | 5.6 |
| 1996 | 37.2°C | 31.6°C | 26.0°C | 45.8°C | 22.6°C | 149 mm | 54% | 2.9 m/s | 5.6 |
| 1995 | 39.3°C | 33.4°C | 27.6°C | 46.6°C | 23.9°C | 91 mm | 44% | 2.5 m/s | 5.8 |
| 1994 🌧️ | 35.7°C | 31.0°C | 26.3°C | 45.3°C | 23.2°C | 393 mm | 63% | 2.4 m/s | 4.7 |
| 1993 | 38.0°C | 32.3°C | 26.5°C | 45.4°C | 24.2°C | 193 mm | 54% | 2.4 m/s | 5.9 |
| 1992 | 39.7°C | 32.9°C | 26.2°C | 46.0°C | 23.9°C | 109 mm | 43% | 2.5 m/s | 6.2 |
| 1991 | 36.8°C | 31.3°C | 25.8°C | 42.9°C | 24.0°C | 140 mm | 58% | 2.8 m/s | 5.8 |
| 1990 | 35.7°C | 30.6°C | 25.4°C | 42.8°C | 23.1°C | 309 mm | 63% | 2.4 m/s | 5.2 |
| 1989 | 36.2°C | 31.2°C | 26.1°C | 45.0°C | 23.0°C | 261 mm | 59% | 2.6 m/s | 5.6 |
| 1988 | 37.6°C | 32.0°C | 26.5°C | 45.3°C | 23.0°C | 278 mm | 53% | 2.3 m/s | 5.5 |
| 1987 | 40.3°C | 33.7°C | 27.0°C | 45.5°C | 24.9°C | 138 mm | 46% | 2.4 m/s | 6.4 |
| 1986 | 38.3°C | 32.4°C | 26.6°C | 46.0°C | 23.4°C | 203 mm | 47% | 2.7 m/s | 5.8 |
| 1985 | 39.9°C | 33.8°C | 27.7°C | 43.7°C | 24.5°C | 87 mm | 40% | 2.9 m/s | 6.5 |
| 1984 | 35.6°C | 30.7°C | 25.8°C | 43.9°C | 23.4°C | 186 mm | 60% | 2.9 m/s | 5.2 |
| 1983 | 39.1°C | 33.2°C | 27.4°C | 45.3°C | 24.0°C | 120 mm | 43% | 2.5 m/s | — |
| 1982 | 36.6°C | 31.1°C | 25.6°C | 42.6°C | 22.8°C | 269 mm | 59% | 2.3 m/s | — |
| 1981 | 39.4°C | 32.8°C | 26.3°C | 45.8°C | 22.4°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 37.3°C with lows near 26.4°C (mean 31.9°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 38.1°C to 36.4°C and overnight lows from 26.6°C to 26°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 37.3°C daytime highs and 26.4°C at night.
Not quite — June is the 11th coolest month in Korea, averaging 31.9°C.
For June in Korea, pack light, breathable clothing and sun protection, with typical highs of 37.3°C and lows of 26.4°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.
