Early autumn · Weather & things to do
Busan in September
Busan cools off: highs slip to 76°F (24°C), from 80°F in August, with lows of 73°F (23°C) and about 7.4 in (187 mm) of rain.
Our comfort score puts it mid-table at 63/100, 9th of 12.
- Avg high
- 76°F (24°C)
- Avg low
- 73°F (23°C)
- Rain
- 7.4 in (187 mm)
- Humidity
- 79%
- Cloud cover
- 67%
- Daylight
- ~12 h 13 min
- Comfort score
- 63/100 · Good
What September feels like
Highs settle around 76°F (24°C), warm enough for short sleeves.
Even at night it stays warm, around 73°F (23°C).
Humidity averages 79%, so the air feels sticky and the heat feels stronger than the thermometer says.
Rain is a real factor, with about 7.4 in (187 mm) across the month.
It's breezy, with average winds near 13 mph (5.6 m/s) at ground level.
Plan around September
September sits mid-table; the best months are October & November.
- Last warm month for a while: October highs fall to 69°F.
- Inside the wettest three-month stretch, July – September.
- Comfort improves from 54/100 in August to 63/100.
- September sits inside the Apr – Jun, Sep – Nov window our Seoul, Gyeongju & Busan route recommends.
What to pack for September
- Light, breathable clothes76°F afternoons
- Quick-dry fabrics79% average humidity
- Rain jacket and waterproof shoes7.4 in of rain on average
- Windproof shellaverage wind 13 mph
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Busan in September
Wet days call for a roof: these picks favor sit-down and indoor stops, plus a few for drier spells.
Galmegi Brewing Gwangalli
Busan craft brewery taproom steps from Gwangalli Beach and its lit-up bridge.
Why now A sit-down stop to wait out showers in a month with 7.4 in of rain.
Jagalchi Fish Market
Korea's largest seafood market; pick fish downstairs and have it served raw or grilled upstairs.
Why now Easy to slot in when September's rain moves in.
Gukje Market and BIFF Square
Sprawling postwar market next to a street of snack stalls selling ssiat hotteok.
Seomyeon Dwaeji Gukbap Alley
Cluster of restaurants serving Busan's pork-and-rice soup, open late.
Huinnyeoul Culture Village
White-walled cliffside village and coastal walk on Yeongdo island.
Nearby in September
- Gyeongju in September~47 mi · highs 76°F, 6.2 in rain · similar daytime temperatures, drier
- Seoul in September~202 mi · highs 76°F, 5.4 in rain · similar daytime temperatures, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Busan in September: quick answers
Is September a good time to visit Busan?
It's middling, scoring 63/100. The best months are October & November, at up to 86. Expect highs of 76°F (24°C) and 7.4 in (187 mm) of rain. September is inside the Apr – Jun, Sep – Nov window our Seoul, Gyeongju & Busan route recommends.
How hot is Busan in September?
Average highs are 76°F (24°C) and average lows 73°F (23°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Busan in September?
Yes: about 7.4 in (187 mm) of rain falls across September on average, the 3rd-wettest month of the year. The annual total is about 59.9 in (1521 mm).
What should I pack for Busan in September?
Bring light, breathable clothes (76°F afternoons), quick-dry fabrics (79% average humidity), rain jacket and waterproof shoes (7.4 in of rain on average), windproof shell (average wind 13 mph) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Routes in season in September
- Seoul, Gyeongju & Busan Apr – Jun, Sep – Nov
Planning Busan in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.