Hiroshima vs Sapporo: which is better, month by month

Hiroshima beats Sapporo in 7 of 12 months — its lead peaks in December (71 vs 42) — while Sapporo wins June to September; they are within 3 points in May.

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: 7 of 12

Sapporo

🇯🇵 Japan · continental climate

Best month: June 89/100
Months won: 4 of 12

Hiroshima vs Sapporo — all 12 months

Month	Hiroshima	Sapporo	Winner	Gap
January	67Ccold, a little rain, clean air	40Ffreezing, a little rain, clean air	Hiroshima	27
February	70Bcold, a little rain, clean air	45Ffreezing, a little rain, clean air	Hiroshima	25
March	74Bcool, rainy	57Dcold, a little rain, muggy air	Hiroshima	17
April	81Anice, rainy	74Bcool, rainy, muggy air	Hiroshima	7
May	86Awarm, rainy, muggy air	84Anice, rainy, clean air	Tie	2
June	68Chot, soaked, muggy air	89Anice, rainy, clean air	Sapporo	21
July	53Dsweltering, soaked, clean air	79Bhot, rainy, clean air	Sapporo	26
August	56Dsweltering, soaked, clean air	67Chot, soaked, clean air	Sapporo	11
September	63Chot, soaked, clean air	86Awarm, rainy, clean air	Sapporo	23
October	87Awarm, rainy, clean air	73Bcool, rainy, clean air	Hiroshima	14
November	83Anice, a little rain, clean air	59Dcold, rainy, clean air	Hiroshima	24
December	71Bcold, a little rain, clean air	42Ffreezing, a little rain, clean air	Hiroshima	29

A month is a tie when the two are within 3 points. The widest gap is December (71 vs 42). Tap a month for that month's temperature, rain, humidity and air quality side by side.