What is the weather like in Busan vs Jeju in September?

In September, Busan averages 27°C high / 21°C low with about 237 mm of rain; Jeju averages 27°C high / 22°C low with about 239 mm.

Busan vs Jeju in September

Jeju is the better pick in September — 69 vs 65 on SeasonMap's comfort score. Jeju is hot, soaked, muggy air, while Busan is hot, soaked, clean air.

Busan vs Jeju — September climate, side by side

	🇰🇷 Busan	🇰🇷 Jeju
Comfort score	65/100 (C)	69/100 (C)
Feels-like high	30°C	30°C
Avg high / low	27° / 21°	27° / 22°
Rainfall	237 mm	239 mm
Rainy days	13	15
Humidity	79%	81%
Air quality (AQI)	47	62

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Busan 🇰🇷 South Koreahot, soaked, clean air · best May65
Jeju 🇰🇷 South Koreahot, soaked, muggy air · best August69

Busan vs Jeju in September — FAQ

Is September better in Busan or Jeju?: Jeju is the better pick in September — 69 vs 65 on SeasonMap's comfort score. Jeju is hot, soaked, muggy air, while Busan is hot, soaked, clean air.
What is the weather like in Busan vs Jeju in September?: In September, Busan averages 27°C high / 21°C low with about 237 mm of rain; Jeju averages 27°C high / 22°C low with about 239 mm.