Hiroshima vs Yokohama: which is better, month by month

Hiroshima beats Yokohama in 3 of 12 months — its lead peaks in October (87 vs 74) — while Yokohama wins July to August; they are within 3 points in the other 7 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.

Hiroshima

🇯🇵 Japan · mild climate

Best month: October 87/100
Months won: 3 of 12

Yokohama

🇯🇵 Japan · mild climate

Best month: May 83/100
Months won: 2 of 12

Hiroshima vs Yokohama — all 12 months

Month	Hiroshima	Yokohama	Winner	Gap
January	67Ccold, a little rain, clean air	68Ccold, a little rain	Tie	1
February	70Bcold, a little rain, clean air	72Bcold, a little rain	Tie	2
March	74Bcool, rainy	70Bcool, rainy	Hiroshima	4
April	81Anice, rainy	80Anice, rainy	Tie	1
May	86Awarm, rainy, muggy air	83Awarm, rainy, muggy air	Tie	3
June	68Chot, soaked, muggy air	69Chot, soaked, muggy air	Tie	1
July	53Dsweltering, soaked, clean air	59Dsweltering, soaked, muggy air	Yokohama	6
August	56Dsweltering, soaked, clean air	62Csweltering, rainy, muggy air	Yokohama	6
September	63Chot, soaked, clean air	64Chot, soaked, muggy air	Tie	1
October	87Awarm, rainy, clean air	74Bnice, soaked, muggy air	Hiroshima	13
November	83Anice, a little rain, clean air	76Bnice, rainy	Hiroshima	7
December	71Bcold, a little rain, clean air	71Bcool, a little rain	Tie	0

A month is a tie when the two are within 3 points. The widest gap is October (87 vs 74). Tap a month for that month's temperature, rain, humidity and air quality side by side.