SeasonMapPortland vs Washington: which is better, month by month
Washington beats Portland in 7 of 12 months — its lead peaks in November (71 vs 57) — while Portland wins June to September; they are within 3 points in May.
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.
Portland vs Washington — all 12 months
| Month | Portland | Washington | Winner | Gap |
|---|---|---|---|---|
| January | 49Fcold, soaked, clean air | 59Dcold, a little rain, clean air | Washington | 10 |
| February | 55Dcold, rainy, clean air | 63Ccold, a little rain, clean air | Washington | 8 |
| March | 65Ccool, rainy, clean air | 73Bcool, rainy, clean air | Washington | 8 |
| April | 76Bcool, rainy, clean air | 83Anice, rainy, clean air | Washington | 7 |
| May | 86Anice, a little rain, clean air | 87Awarm, rainy | Tie | 1 |
| June | 96Swarm, a little rain, clean air | 78Bhot, rainy | Portland | 18 |
| July | 92Swarm, dry, clean air | 65Csweltering, soaked | Portland | 27 |
| August | 89Awarm, dry, clean air | 70Bsweltering, rainy | Portland | 19 |
| September | 94Swarm, a little rain, clean air | 80Ahot, rainy, clean air | Portland | 14 |
| October | 72Bnice, rainy, clean air | 85Anice, rainy, clean air | Washington | 13 |
| November | 57Dcool, soaked, clean air | 71Bcool, a little rain, clean air | Washington | 14 |
| December | 45Fcold, soaked, clean air | 58Dcold, rainy, clean air | Washington | 13 |
A month is a tie when the two are within 3 points. The widest gap is July (92 vs 65). Tap a month for that month's temperature, rain, humidity and air quality side by side.