Nagano vs Osaka: which is better, month by month

Osaka beats Nagano in 7 of 12 months — its lead peaks in January (69 vs 47) — while Nagano wins May to September.

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.

Nagano

🇯🇵 Japan · mild climate

Best month: May 86/100
Months won: 5 of 12

Osaka

🇯🇵 Japan · mild climate

Best month: November 84/100
Months won: 7 of 12

Nagano vs Osaka — all 12 months

Month	Nagano	Osaka	Winner	Gap
January	47Fcold, rainy, clean air	69Ccold, a little rain	Osaka	22
February	55Dcold, rainy, clean air	71Bcold, a little rain	Osaka	16
March	66Ccold, rainy, muggy air	75Bcool, rainy	Osaka	9
April	78Bnice, rainy, muggy air	83Anice, rainy	Osaka	5
May	86Awarm, rainy, clean air	82Awarm, soaked	Nagano	4
June	79Bhot, soaked, muggy air	66Chot, soaked, muggy air	Nagano	13
July	56Dsweltering, soaked, clean air	51Dsweltering, soaked, muggy air	Nagano	5
August	60Csweltering, soaked, clean air	53Dsweltering, soaked, muggy air	Nagano	7
September	71Bhot, soaked, clean air	61Csweltering, soaked, muggy air	Nagano	10
October	75Bnice, soaked, clean air	80Awarm, soaked, muggy air	Osaka	5
November	70Bcool, rainy, clean air	84Anice, a little rain, muggy air	Osaka	14
December	53Dcold, soaked, clean air	73Bcool, a little rain, muggy air	Osaka	20

A month is a tie when the two are within 3 points. The widest gap is January (47 vs 69). Tap a month for that month's temperature, rain, humidity and air quality side by side.