Busan weather in June
In June, Busan has daytime highs averaging 23 °C, nights around 18 °C, with 9.4 wet days, and a sea temperature of 20 °C. Figures are 1991–2020 climate normals.
- 22.9°C Average high
- 18.1°C Average low
- 9.4days Wet days
- 171mm Rainfall
- 20.0°C Sea temperature
- 15h Daylight
Daily temperatures through June
How June develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 June | 22.1 °C | 16.6 °C | 22 % |
| 11–20 June | 23.0 °C | 18.0 °C | 26 % |
| 21–30 June | 23.6 °C | 19.5 °C | 45 % |
- Average highs rise from 22.1 °C early in June to 23.6 °C by the end of it.
- Rain is most likely over days 21–30 of June (45 % of days) and least likely over days 1–10 (22 %).
What to expect
| Measure | Typical June | Share of the month |
|---|---|---|
| Days above 25 °C | 3.1 of 30 | 10 % |
| Days above 30 °C | 0 of 30 | 0 % |
| Days below 0 °C | 0 of 30 | 0 % |
| Days with more than 1 mm rain | 9.4 of 30 | 31 % |
Conditions in June
| Measure | Average |
|---|---|
| Mean temperature | 20 °C |
| Record high (1991–2020) | 29 °C |
| Record low (1991–2020) | 13 °C |
| Relative humidity | 84 % |
| Wind speed | 18 km/h |
| Cloud cover | 71 % |
Where Busan ranks in June
| Ranking | Position | Value |
|---|---|---|
| The coolest places in Asia in June | 50thof 50 | 23 °C |
June compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| April | 16.0 °C | 113 mm | 55 % |
| May | 19.9 °C | 118 mm | 59 % |
| June | 22.9 °C | 171 mm | 71 % |
| July | 26.0 °C | 247 mm | 73 % |
| August | 27.6 °C | 217 mm | 64 % |
See all twelve months for Busan
- June is the 4th warmest month here.
- It is the 10th driest month of the year.
- It ranks 11th for least cloud cover.
- Days last about 15 hours from sunrise to sunset.
- It rains on 9.4 of 30 days — 31 % of the month.
- Nights are about 4.8 °C cooler than the middle of the day.
- The hottest June day on record since 1991 reached 29 °C, 6.0 °C above the usual daytime high.
- Beach score: 64 / 100 — see how this is calculated.
Nearby destinations in June
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| Busan | 23 °C | 9.4 | 20 |
| Changwon | 25 °C | 10 | – |
| Geoje | 21 °C | 10 | 20 |
| Ulsan | 25 °C | 9 | 20 |
| Gyeongju | 27 °C | 9 | – |
| Gyeongsan-si | 28 °C | 9 | – |
| Chinju | 26 °C | 11 | – |
| Daegu | 28 °C | 9 | – |
| Pohang | 25 °C | 9 | 19 |
QuestionsJune in Busan, answered
How warm is Busan in June?
Daily highs average 23 °C and nights fall to about 18 °C, a spread of 4.8 °C between afternoon and dawn. That makes June the 4th warmest month of the year here.
Does it rain much in Busan in June?
June averages 171 mm of rain, spread over about 9 of the 30 days — 31 % of the month. Cloud cover averages 71 % of the sky.
Is the sea warm enough to swim in June?
The sea averages 20 °C off Busan in June. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in June?
Busan averages 15 hours between sunrise and sunset in June. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.