Gwangju Weather in September
September in Gwangju brings high temperatures, with highs of 28°C (82°F) and nights dropping to 17°C (63°F). Rainfall is on the higher side this month, averaging around 149 mm (5.9 in), so keep a rain jacket handy.
Rainfall in Gwangju in September
Rain is expected on roughly 10 days, totalling around 149 mm (5.9 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Gwangju in September
Daytime highs in Gwangju in September reach 28°C (82°F), with nights around 17°C (63°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Gwangju in September
The area experiences a moderate amount of sunshine, with approximately 172 hours of sunlight expected. This means a decent mix of sun and overcast.If your ideal day consists of dry skies and pleasant temperatures, April and October typically offer the best circumstances for Gwangju.
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 Gwangju's climate page.
Gwangju Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
28°C (82°F)
Chance of Rain
32%
Precipitation
149 mm (5.9 in)
Rainy days
10 days
Humidity
74% *
Sunshine
172 hours *
Percentage Sunshine
47% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Gwangju typically drop from around 29°C (84°F) at the start of September to approximately 25°C (77°F) by the end. Nights are pleasant, with lows typically ranging from 15°C (59°F) to 21°C (70°F).
Average temperatures in September
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 September
Historical weather for Gwangju in September
Browse day-by-day weather records for Gwangju spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Gwangju historical weather extremes in September
Our historical data for Gwangju spans 1976 to 2025, revealing these weather extremes.
- The hottest September day on record in Gwangju reached 36°C (97°F) (September 17, 2024).
- The coldest September day was on September 20, 1986, with a maximum of 17°C (63°F).
- Nighttime temperatures dropped to 8°C (46°F) on September 30, 2017, marking the coldest September night on record.
Best Places in South Korea in September
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 September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Gwangju in September
Warm but pleasant conditions in Gwangju in September. 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. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Gwangju in September
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 Gwangju's climate page.
Temperature Rainfall Sunshine Humidity
See the full Gwangju climate overview or explore weather in South Korea.
