Mud festival in South Korea
In July, the peaceful seaside town of Boryeong turned into a chaos of mud for 9 days. We recommend putting this festival on your bucket list.
Gyeongju Weather in September
September in Gyeongju sees daytime temperatures around 27°C (81°F) and lows of 18°C (64°F) at night. With around 167 mm (6.6 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Gyeongju in September
Typically around 10 days of rainfall are expected, averaging 167 mm (6.6 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Gyeongju in September
September in Gyeongju brings high temperatures, with highs of 27°C (81°F) and nights around 18°C (64°F). Overall, the month follows a fairly predictable daily temperature pattern. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Gyeongju in September
The city usually sees around 153 hours of sunlight, indicating a moderately sunny period.If your ideal day consists of dry skies and pleasant temperatures, April, May and October typically offer the best circumstances for Gyeongju.
Gyeongju Temperature in September
Min Temperature
18°C (64°F)
Max Temperature
27°C (81°F)
Chance of Rain
34%
Precipitation
167 mm (6.6 in)
Rainy days
10 days
Humidity
77% *
Sunshine
153 hours *
Percentage Sunshine
41% *
* Data from: Pohang, South Korea (26 KM, 16 Miles).
Gyeongju Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Gyeongju - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Gyeongju typically drop from around 28°C (82°F) at the start of September to approximately 24°C (75°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 records for Gyeongju in September
Browse day-by-day weather records for Gyeongju spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Gyeongju historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Gyeongju.
- The warmest day in September was on September 1, 1997, with a maximum of 36°C (97°F).
- The coldest September day was on September 20, 1986, with a maximum of 18°C (64°F).
- The coldest night in September in Gyeongju was on September 27, 1987, with a minimum of 8°C (46°F).
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
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Gyeongju in September
Warm but pleasant conditions in Gyeongju 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. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Gyeongju in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Gyeongju 3-Day Forecast
More climate data for Gyeongju
Temperature Rainfall Sunshine Humidity
See the full Gyeongju climate overview or explore weather in South Korea.
Popular in September
Where to go in September - average daytime high across popular destinations.
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Mud festival in South Korea
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