SeasonMapNagano 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 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.