SeasonMapBuenos Aires vs Santiago: which is better, month by month
Santiago beats Buenos Aires in 5 of 12 months — its lead peaks in January (89 vs 79) — while Buenos Aires wins May to August; they are within 3 points in April, September and October.
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.
Buenos Aires vs Santiago — all 12 months
| Month | Buenos Aires | Santiago | Winner | Gap |
|---|---|---|---|---|
| January | 79Bhot, a little rain, clean air | 89Ahot, dry | Santiago | 10 |
| February | 79Bhot, rainy, clean air | 87Ahot, dry, poor air quality | Santiago | 8 |
| March | 81Awarm, rainy, clean air | 88Ahot, dry, poor air quality | Santiago | 7 |
| April | 84Anice, rainy, clean air | 86Awarm, a little rain, poor air quality | Tie | 2 |
| May | 82Anice, a little rain, clean air | 77Bnice, a little rain, poor air quality | Buenos Aires | 5 |
| June | 78Bcool, a little rain, clean air | 66Ccool, rainy, poor air quality | Buenos Aires | 12 |
| July | 76Bcool, a little rain, clean air | 70Bcool, a little rain, poor air quality | Buenos Aires | 6 |
| August | 82Acool, a little rain, clean air | 74Bnice, a little rain, poor air quality | Buenos Aires | 8 |
| September | 86Anice, a little rain, clean air | 83Anice, a little rain | Tie | 3 |
| October | 90Snice, rainy, clean air | 91Swarm, a little rain | Tie | 1 |
| November | 88Awarm, a little rain, clean air | 92Swarm, dry | Santiago | 4 |
| December | 83Ahot, a little rain, clean air | 88Ahot, dry | Santiago | 5 |
A month is a tie when the two are within 3 points. The widest gap is June (78 vs 66). Tap a month for that month's temperature, rain, humidity and air quality side by side.