SeasonMapChamonix vs Lyon: which is better, month by month
Lyon beats Chamonix in 7 of 12 months — its lead peaks in June (86 vs 12) — while Chamonix wins November to February; they are within 3 points in March.
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.
Chamonix vs Lyon — all 12 months
| Month | Chamonix | Lyon | Winner | Gap |
|---|---|---|---|---|
| January | 88Afreezing, soaked, clean air | 60Ccold, a little rain, clean air | Chamonix | 28 |
| February | 81Acold, rainy, clean air | 69Ccold, a little rain, muggy air | Chamonix | 12 |
| March | 77Bcold, soaked, clean air | 75Bcool, a little rain, clean air | Tie | 2 |
| April | 60Ccool, rainy, clean air | 83Anice, a little rain, clean air | Lyon | 23 |
| May | 42Fcool, soaked, clean air | 89Anice, rainy, clean air | Lyon | 47 |
| June | 12Fnice, soaked, clean air | 86Awarm, rainy | Lyon | 74 |
| July | 14Fwarm, soaked, clean air | 84Ahot, a little rain, clean air | Lyon | 70 |
| August | 16Fwarm, rainy, clean air | 82Ahot, a little rain, clean air | Lyon | 66 |
| September | 21Fnice, rainy, clean air | 93Swarm, a little rain, clean air | Lyon | 72 |
| October | 33Fcool, rainy, clean air | 77Bnice, rainy, clean air | Lyon | 44 |
| November | 72Bcold, soaked, clean air | 66Ccool, a little rain, clean air | Chamonix | 6 |
| December | 83Acold, soaked, clean air | 59Dcold, a little rain, muggy air | Chamonix | 24 |
A month is a tie when the two are within 3 points. The widest gap is June (12 vs 86). Tap a month for that month's temperature, rain, humidity and air quality side by side.