SeasonMapNagano vs Tokyo: which is better, month by month
Tokyo beats Nagano in 5 of 12 months — its lead peaks in January (67 vs 47) — while Nagano wins June and September; they are within 3 points in the other 5 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.
Nagano vs Tokyo — all 12 months
| Month | Nagano | Tokyo | Winner | Gap |
|---|---|---|---|---|
| January | 47Fcold, rainy, clean air | 67Ccold, a little rain | Tokyo | 20 |
| February | 55Dcold, rainy, clean air | 72Bcold, a little rain | Tokyo | 17 |
| March | 66Ccold, rainy, muggy air | 70Bcool, rainy | Tokyo | 4 |
| April | 78Bnice, rainy, muggy air | 80Anice, rainy | Tie | 2 |
| May | 86Awarm, rainy, clean air | 85Awarm, rainy, muggy air | Tie | 1 |
| June | 79Bhot, soaked, muggy air | 71Bwarm, soaked, muggy air | Nagano | 8 |
| July | 56Dsweltering, soaked, clean air | 58Dsweltering, soaked, muggy air | Tie | 2 |
| August | 60Csweltering, soaked, clean air | 62Csweltering, rainy, muggy air | Tie | 2 |
| September | 71Bhot, soaked, clean air | 66Chot, soaked, muggy air | Nagano | 5 |
| October | 75Bnice, soaked, clean air | 75Bnice, soaked, muggy air | Tie | 0 |
| November | 70Bcool, rainy, clean air | 77Bnice, rainy, muggy air | Tokyo | 7 |
| December | 53Dcold, soaked, clean air | 69Ccold, a little rain | Tokyo | 16 |
A month is a tie when the two are within 3 points. The widest gap is January (47 vs 67). Tap a month for that month's temperature, rain, humidity and air quality side by side.