Fukuoka vs Karuizawa: which is better, month by month

Fukuoka beats Karuizawa in 7 of 12 months — its lead peaks in October (87 vs 66) — while Karuizawa 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.

Fukuoka

🇯🇵 Japan · mild climate

Best month: October 87/100
Months won: 7 of 12

Karuizawa

🇯🇵 Japan · mild climate

Best month: May 79/100
Months won: 4 of 12

Fukuoka vs Karuizawa — all 12 months

Month	Fukuoka	Karuizawa	Winner	Gap
January	67Ccold, a little rain, clean air	51Dfreezing, a little rain, clean air	Fukuoka	16
February	69Ccold, rainy, clean air	54Dfreezing, a little rain, clean air	Fukuoka	15
March	74Bcool, rainy, muggy air	63Ccold, rainy, reliable snow	Fukuoka	11
April	81Anice, rainy, muggy air	73Bcool, rainy	Fukuoka	8
May	82Awarm, soaked, muggy air	79Bnice, rainy, muggy air	Tie	3
June	61Chot, soaked, muggy air	77Bnice, soaked, muggy air	Karuizawa	16
July	48Fsweltering, soaked, clean air	71Bhot, soaked, clean air	Karuizawa	23
August	52Dsweltering, soaked, muggy air	75Bhot, soaked, clean air	Karuizawa	23
September	60Chot, soaked, muggy air	78Bnice, soaked, clean air	Karuizawa	18
October	87Awarm, rainy, clean air	66Ccool, soaked, clean air	Fukuoka	21
November	83Anice, a little rain, clean air	69Ccold, a little rain, clean air	Fukuoka	14
December	71Bcool, a little rain, clean air	58Dcold, a little rain, clean air	Fukuoka	13

A month is a tie when the two are within 3 points. The widest gap is July (48 vs 71). Tap a month for that month's temperature, rain, humidity and air quality side by side.