SeasonMapMexico City vs Ulaanbaatar: which is better, month by month
Mexico City beats Ulaanbaatar in 7 of 12 months — its lead peaks in December (92 vs 29) — while Ulaanbaatar wins June to August; they are within 3 points in May and 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.
Mexico City vs Ulaanbaatar — all 12 months
| Month | Mexico City | Ulaanbaatar | Winner | Gap |
|---|---|---|---|---|
| January | 92Snice, dry | 32Ffreezing, dry | Mexico City | 60 |
| February | 92Swarm, dry | 35Ffreezing, dry | Mexico City | 57 |
| March | 90Swarm, dry | 53Dfreezing, dry | Mexico City | 37 |
| April | 88Awarm, a little rain | 70Bcold, dry, clean air | Mexico City | 18 |
| May | 84Ahot, a little rain, poor air quality | 81Acool, dry, clean air | Tie | 3 |
| June | 81Awarm, soaked | 93Snice, a little rain, clean air | Ulaanbaatar | 12 |
| July | 84Awarm, soaked, muggy air | 90Swarm, a little rain, clean air | Ulaanbaatar | 6 |
| August | 82Awarm, soaked, muggy air | 87Anice, a little rain, clean air | Ulaanbaatar | 5 |
| September | 81Awarm, soaked, muggy air | 78Bcool, a little rain, clean air | Tie | 3 |
| October | 89Awarm, rainy, muggy air | 63Ccold, dry, clean air | Mexico City | 26 |
| November | 93Swarm, dry | 40Ffreezing, dry, reliable snow | Mexico City | 53 |
| December | 92Snice, dry | 29Ffreezing, dry, poor air quality | Mexico City | 63 |
A month is a tie when the two are within 3 points. The widest gap is December (92 vs 29). Tap a month for that month's temperature, rain, humidity and air quality side by side.