SeasonMapPhiladelphia vs Portland: which is better, month by month
Philadelphia beats Portland in 8 of 12 months — its lead peaks in November (71 vs 57) — while Portland wins June 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.
Philadelphia vs Portland — all 12 months
| Month | Philadelphia | Portland | Winner | Gap |
|---|---|---|---|---|
| January | 53Dcold, rainy, clean air | 49Fcold, soaked, clean air | Philadelphia | 4 |
| February | 60Ccold, rainy | 55Dcold, rainy, clean air | Philadelphia | 5 |
| March | 69Ccool, rainy, clean air | 65Ccool, rainy, clean air | Philadelphia | 4 |
| April | 82Anice, rainy, clean air | 76Bcool, rainy, clean air | Philadelphia | 6 |
| May | 91Swarm, rainy | 86Anice, a little rain, clean air | Philadelphia | 5 |
| June | 79Bhot, rainy | 96Swarm, a little rain, clean air | Portland | 17 |
| July | 65Csweltering, rainy | 92Swarm, dry, clean air | Portland | 27 |
| August | 72Bhot, rainy | 89Awarm, dry, clean air | Portland | 17 |
| September | 81Awarm, rainy, clean air | 94Swarm, a little rain, clean air | Portland | 13 |
| October | 85Anice, a little rain, clean air | 72Bnice, rainy, clean air | Philadelphia | 13 |
| November | 71Bcool, a little rain, clean air | 57Dcool, soaked, clean air | Philadelphia | 14 |
| December | 56Dcold, rainy, clean air | 45Fcold, soaked, clean air | Philadelphia | 11 |
A month is a tie when the two are within 3 points. The widest gap is July (65 vs 92). Tap a month for that month's temperature, rain, humidity and air quality side by side.