Seongnam Weather in June
During June, Seongnam experiences high daytime temperatures of 28°C (82°F) and cooler nights around 17°C (63°F). Expect quite a bit of rainfall. Around 145 mm (5.7 in) is typical.
Rainfall in Seongnam in June
Expect around 10 days of rain based on historical data, with 145 mm (5.7 in) average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Seongnam in June
June in Seongnam sees highs of 28°C (82°F) and lows of 17°C (63°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 17°C (63°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Seongnam in June
The area experiences a moderate amount of sunshine, with approximately 188 hours of sunlight expected. This means a decent mix of sun and overcast.
Wind Speed in Seongnam in June
Average wind conditions reach 2 m/s (4 knots) in June. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.If you prefer dry days with pleasant temperatures, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Seongnam's climate page.
Seongnam Temperature in June
Min Temperature
17°C (63°F)
Max Temperature
28°C (82°F)
Chance of Rain
33%
Precipitation
145 mm (5.7 in)
Rainy days
10 days
Humidity
64% *
Windspeed
2 m/s (4 knots) *
Sunshine
188 hours *
Percentage Sunshine
43% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Seongnam typically stay consistent throughout June, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 20°C (68°F).
Average temperatures in June
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Historical weather for Seongnam in June
Browse day-by-day weather records for Seongnam spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Seongnam historical weather extremes in June
Our historical data for Seongnam spans 1976 to 2026, revealing these weather extremes.
- The hottest June day on record in Seongnam reached 36°C (97°F) (June 22, 2020).
- Seongnam experienced its chilliest June day on June 5, 1998, reaching only 16°C (61°F).
- The lowest overnight temperature recorded in June was 7°C (45°F) (June 1, 1981).
Best Places in South Korea in June
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in June →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Seongnam in June
Warm but pleasant conditions in Seongnam in June. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Seongnam in June
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Seongnam's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Seongnam climate overview or explore weather in South Korea.
