Yeosu Weather in September
September in Yeosu brings high temperatures, with daytime highs of 26°C (79°F) and nights around 21°C (70°F). Quite a bit of rainfall is expected, around 167 mm (6.6 in), so pack an umbrella.
Rainfall in Yeosu in September
Records from the past 30 years suggest around 9 days of rain, with 167 mm (6.6 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Yeosu in September
September in Yeosu sees highs of 26°C (79°F) and lows of 21°C (70°F) overnight. The summer season is characteristic of September. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 21°C (70°F), evenings stay pleasantly warm.
Sunshine in Yeosu in September
The area enjoys a balanced 160 hours of sunlight, ensuring it's neither too overcast nor too sunny.Our weather planner can help you find worldwide destinations with pleasant weather during this period. October typically offers the best weather for Yeosu.
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 Yeosu's climate page.
Yeosu Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
26°C (79°F)
Chance of Rain
31%
Precipitation
167 mm (6.6 in)
Rainy days
9 days
Humidity
77% *
Sunshine
160 hours *
Percentage Sunshine
43% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Yeosu 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 22°C (72°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 Yeosu in September
Browse day-by-day weather records for Yeosu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Yeosu historical weather extremes in September
The extremes listed below come from historical weather data collected in Yeosu from 1976 through 2025.
- Yeosu recorded its highest September temperature of 35°C (95°F) on September 2, 1994.
- Yeosu experienced its chilliest September day on September 19, 1986, reaching only 17°C (63°F).
- The lowest overnight temperature recorded in September was 7°C (45°F) (September 28, 1997).
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
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What to Wear in Yeosu in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Yeosu 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 Yeosu's climate page.
Temperature Rainfall Sunshine Humidity
See the full Yeosu climate overview or explore weather in South Korea.
