Gwangju in September
In September, Gwangju averages 26°C (79°F) during the day and 18°C (64°F) at night, with around 11 days of rain (151 mm total).
High seasonConditions are warm and beach-friendly. Plan for unsettled weather and bring rain gear.
September offers comfortable temperatures in Gwangju, with some rain to plan around.
How September compares to the rest of the year in Gwangju
September is in the middle of the year for warmth in Gwangju (4th of 12) and moderately rainy compared to the rest of the year (4th of 12). Daytime temperature runs 7°C above the annual average (19°C). September runs 4°C cooler than August (30°C) and cools 6°C in October (20°C).
September sunrise & sunset in Gwangju
Times shown for Gwangju local time (Asia/Seoul), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Gwangju — September
Golden-hour and blue-hour windows for the 15th of September, in Gwangju's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Gwangju in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (High season) and Gwangju's popularity.
September in South Korea — events that affect travel
Known cultural, religious, or national events that surge prices, fill hotels, or close businesses during this month. Plan around them, or build your itinerary around the ones you'd like to see.
Korea's major harvest festival — most Koreans travel home; Seoul empties out somewhat but transit out of the city books solid.
Plan: Good time to enjoy a quieter Seoul; bad time to try to take a KTX train south on the holiday's eve.
Crowds & pricing — September in Gwangju
This is a busy month in Gwangju — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — September in Gwangju
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Gwangju in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 5°C / 41°F | -3°C / 26°F | 31 mm | 5 | — |
| February | 8°C / 46°F | -2°C / 28°F | 27 mm | 5 | — |
| March | 14°C / 57°F | 2°C / 36°F | 65 mm | 7 | — |
| April | 19°C / 66°F | 7°C / 45°F | 101 mm | 8 | — |
| May | 24°C / 76°F | 13°C / 55°F | 95 mm | 8 | — |
| June | 28°C / 82°F | 18°C / 64°F | 154 mm | 12 | — |
| July | 29°C / 85°F | 22°C / 72°F | 268 mm | 17 | — |
| August | 30°C / 86°F | 23°C / 73°F | 218 mm | 16 | — |
| September | 26°C / 79°F | 18°C / 64°F | 151 mm | 11 | — |
| October | 20°C / 69°F | 10°C / 51°F | 70 mm | 5 | — |
| November | 14°C / 58°F | 4°C / 40°F | 59 mm | 6 | — |
| December | 7°C / 44°F | -2°C / 29°F | 34 mm | 6 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Gwangju in September →
Frequently asked questions
How hot is Gwangju in September?
In September, Gwangju averages a high of 26°C (79°F) and a low of 18°C (64°F) — generally warm.
Does it rain a lot in Gwangju in September?
September can be fairly wet in Gwangju, with about 11 rainy days on average.
Is September a good time to visit Gwangju?
September is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Gwangju in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Gwangju for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.