Busan vs Seoul: which is better, month by month

Busan beats Seoul in 6 of 12 months — its lead peaks in January (66 vs 47) — while Seoul wins April and September; they are within 3 points in the other 4 months.

Each place is scored under the lens that suits its type. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Busan

🇰🇷 South Korea · mild climate

Best month: May 88/100
Months won: 6 of 12

Seoul

🇰🇷 South Korea · mild climate

Best month: May 90/100
Months won: 2 of 12

Busan vs Seoul — all 12 months

Month	Busan	Seoul	Winner	Gap
January	66Ccold, a little rain	47Ffreezing, dry	Busan	19
February	69Ccold, a little rain	59Dcold, dry	Busan	10
March	74Bcool, rainy	74Bcool, a little rain	Tie	0
April	81Anice, rainy	85Anice, a little rain	Seoul	4
May	88Anice, rainy, muggy air	90Swarm, rainy	Tie	2
June	77Bwarm, soaked, muggy air	78Bhot, rainy	Tie	1
July	61Csweltering, soaked, clean air	51Dsweltering, soaked, muggy air	Busan	10
August	58Dsweltering, soaked, muggy air	54Dsweltering, soaked, muggy air	Busan	4
September	65Chot, soaked, clean air	75Bhot, rainy, muggy air	Seoul	10
October	86Anice, rainy	83Anice, a little rain	Tie	3
November	82Acool, a little rain, clean air	70Bcool, a little rain	Busan	12
December	70Bcold, dry	52Dcold, dry	Busan	18

A month is a tie when the two are within 3 points. The widest gap is January (66 vs 47). Tap a month for that month's temperature, rain, humidity and air quality side by side.