SeasonMapCopenhagen vs Helsinki: which is better, month by month
Copenhagen beats Helsinki in 8 of 12 months — its lead peaks in January (43 vs 30) — while Helsinki wins July; they are within 3 points in May, June and August.
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.
Copenhagen vs Helsinki — all 12 months
| Month | Copenhagen | Helsinki | Winner | Gap |
|---|---|---|---|---|
| January | 43Fcold, a little rain, clean air | 30Ffreezing, a little rain, clean air | Copenhagen | 13 |
| February | 51Dcold, a little rain, clean air | 38Ffreezing, a little rain, clean air | Copenhagen | 13 |
| March | 62Ccold, a little rain, clean air | 52Dfreezing, a little rain, clean air | Copenhagen | 10 |
| April | 75Bcold, a little rain, clean air | 70Bcold, a little rain, muggy air | Copenhagen | 5 |
| May | 83Acool, a little rain, clean air | 81Acool, a little rain, clean air | Tie | 2 |
| June | 92Snice, a little rain, clean air | 90Snice, a little rain, clean air | Tie | 2 |
| July | 89Anice, rainy, clean air | 93Snice, a little rain, clean air | Helsinki | 4 |
| August | 88Anice, a little rain, clean air | 87Anice, rainy, clean air | Tie | 1 |
| September | 82Anice, a little rain, clean air | 77Bcool, a little rain, clean air | Copenhagen | 5 |
| October | 68Ccool, a little rain, clean air | 61Ccold, a little rain, clean air | Copenhagen | 7 |
| November | 58Dcold, a little rain, clean air | 45Fcold, a little rain, clean air | Copenhagen | 13 |
| December | 47Fcold, a little rain, clean air | 34Ffreezing, a little rain, clean air | Copenhagen | 13 |
A month is a tie when the two are within 3 points. The widest gap is January (43 vs 30). Tap a month for that month's temperature, rain, humidity and air quality side by side.