SeasonMapIlha Grande vs Santiago: which is better, month by month
Santiago beats Ilha Grande in 7 of 12 months — its lead peaks in January (89 vs 71) — while Ilha Grande wins May to August; they are within 3 points in September.
Each place is scored under the lens that suits its type — they are different kinds of destination, so the scores are each place at its own best. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.
Ilha Grande vs Santiago — all 12 months
| Month | Ilha Grande | Santiago | Winner | Gap |
|---|---|---|---|---|
| January | 71Bwarm, soaked, muggy air | 89Ahot, dry | Santiago | 18 |
| February | 77Bwarm, soaked, muggy air | 87Ahot, dry, poor air quality | Santiago | 10 |
| March | 78Bwarm, soaked, muggy air | 88Ahot, dry, poor air quality | Santiago | 10 |
| April | 81Anice, rainy, muggy air | 86Awarm, a little rain, poor air quality | Santiago | 5 |
| May | 84Anice, a little rain, muggy air | 77Bnice, a little rain, poor air quality | Ilha Grande | 7 |
| June | 84Anice, a little rain, muggy air | 66Ccool, rainy, poor air quality | Ilha Grande | 18 |
| July | 85Anice, a little rain, muggy air | 70Bcool, a little rain, poor air quality | Ilha Grande | 15 |
| August | 80Anice, a little rain, muggy air | 74Bnice, a little rain, poor air quality | Ilha Grande | 6 |
| September | 85Anice, a little rain, muggy air | 83Anice, a little rain | Tie | 2 |
| October | 78Bnice, soaked, muggy air | 91Swarm, a little rain | Santiago | 13 |
| November | 79Bnice, soaked, muggy air | 92Swarm, dry | Santiago | 13 |
| December | 77Bnice, soaked, muggy air | 88Ahot, dry | Santiago | 11 |
A month is a tie when the two are within 3 points. The widest gap is January (71 vs 89). Tap a month for that month's temperature, rain, humidity and air quality side by side.