Gangneung Weather in September
During September, Gangneung experiences high daytime temperatures of 23°C (73°F) and cooler nights around 17°C (63°F). September sits within the rainy season, and part of the summer season, so expect regular and often heavy rainfall.
Rainfall in Gangneung in September
Gangneung is in the rainy season in September, with rain on around 11 days and an average of 203 mm (8 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.
Temperature in Gangneung in September
Daytime highs in Gangneung in September reach 23°C (73°F), with nights around 17°C (63°F). Experience the summer season in September. Overall, the month follows a fairly predictable daily temperature pattern. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Gangneung in September
You can expect a moderate amount of sunlight, with approximately 147 hours. Even though this month is part of the wet season, you can still see the sun occasionally.If you prefer dry days with pleasant temperatures, May 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 Gangneung's climate page.
Gangneung Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
23°C (73°F)
Chance of Rain
35%
Precipitation
203 mm (8 in)
Rainy days
11 days
Humidity
84% *
Sunshine
147 hours *
Percentage Sunshine
38% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Gangneung typically drop from around 26°C (79°F) at the start of September to approximately 23°C (73°F) by the end. Nights are pleasant, with lows typically ranging from 12°C (54°F) to 19°C (66°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 Gangneung in September
Browse day-by-day weather records for Gangneung spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Gangneung historical weather extremes in September
According to our 49 years of weather records for Gangneung, the following extremes were recorded between 1976 and 2025.
- On September 10, 2024, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 16°C (61°F), recorded on September 22, 2010.
- Nighttime temperatures dropped to 2°C (36°F) on September 18, 1987, 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 Gangneung in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Gangneung 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 Gangneung's climate page.
Temperature Rainfall Sunshine Humidity
See the full Gangneung climate overview or explore weather in South Korea.
