SeasonMapHiroshima vs Osaka: which is better, month by month
Hiroshima beats Osaka in 2 of 12 months — its lead peaks in October (87 vs 80) — and they are within 3 points in the other 10 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.
Hiroshima vs Osaka — all 12 months
| Month | Hiroshima | Osaka | Winner | Gap |
|---|---|---|---|---|
| January | 67Ccold, a little rain, clean air | 69Ccold, a little rain | Tie | 2 |
| February | 70Bcold, a little rain, clean air | 71Bcold, a little rain | Tie | 1 |
| March | 74Bcool, rainy | 75Bcool, rainy | Tie | 1 |
| April | 81Anice, rainy | 83Anice, rainy | Tie | 2 |
| May | 86Awarm, rainy, muggy air | 82Awarm, soaked | Hiroshima | 4 |
| June | 68Chot, soaked, muggy air | 66Chot, soaked, muggy air | Tie | 2 |
| July | 53Dsweltering, soaked, clean air | 51Dsweltering, soaked, muggy air | Tie | 2 |
| August | 56Dsweltering, soaked, clean air | 53Dsweltering, soaked, muggy air | Tie | 3 |
| September | 63Chot, soaked, clean air | 61Csweltering, soaked, muggy air | Tie | 2 |
| October | 87Awarm, rainy, clean air | 80Awarm, soaked, muggy air | Hiroshima | 7 |
| November | 83Anice, a little rain, clean air | 84Anice, a little rain, muggy air | Tie | 1 |
| December | 71Bcold, a little rain, clean air | 73Bcool, a little rain, muggy air | Tie | 2 |
A month is a tie when the two are within 3 points. The widest gap is October (87 vs 80). Tap a month for that month's temperature, rain, humidity and air quality side by side.