Yangyang Weather in September
Yangyang in September sees high temperatures, with highs around 24°C (75°F) and overnight lows of 16°C (61°F). Rainfall is fairly high at around 168 mm (6.6 in) on average, so pack waterproofs just in case.
Rainfall in Yangyang in September
Expect around 10 days of rain based on historical data, with 168 mm (6.6 in) average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Yangyang in September
Temperatures in Yangyang in September top out at 24°C (75°F) and drop to 16°C (61°F) overnight. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 16°C (61°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.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May typically offers the best weather for Yangyang.
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 Yangyang's climate page.
Yangyang Temperature in September
Min Temperature
16°C (61°F)
Max Temperature
24°C (75°F)
Chance of Rain
34%
Precipitation
168 mm (6.6 in)
Rainy days
10 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Yangyang typically drop from around 25°C (77°F) at the start of September to approximately 22°C (72°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°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 Yangyang in September
Browse day-by-day weather records for Yangyang spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Yangyang historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Yangyang.
- The hottest September day on record in Yangyang reached 33°C (91°F) (September 1, 2025).
- On September 22, 2010, Yangyang saw its coldest September day with temperatures maxing out at 15°C (59°F).
- The coldest night in September in Yangyang was on September 23, 1980, with a minimum of 4°C (39°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
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tolerable
unpleasant
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What to Wear in Yangyang in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Yangyang 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 Yangyang's climate page.
See the full Yangyang climate overview or explore weather in South Korea.
