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Best Time for The Aosta Valley & Mont Blanc
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Sweet spot: April, June, July. Computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.
💡 Good to know
- The Skyway's rotating cabins climb to 3,466 m in clear morning air, ibex graze the Gran Paradiso meadows, and the Matterhorn's Italian face holds evening light.
- This becomes ski country wall to wall — gorgeous, but the valley-hopping road trip waits for the snow to leave the passes.
| Month | Low | High | Rain | Daylight | |
|---|---|---|---|---|---|
| January | −7.3°C | 0.9°C | 63 mm | 8.9 h | ❄ |
| February | −7.0°C | 1.9°C | 55 mm | 10.1 h | ❄ |
| March | −3.2°C | 5.8°C | 68 mm | 11.6 h | ❄ |
| April | 1.3°C | 10.6°C | 75 mm | 13.3 h | ❄ |
| May | 5.4°C | 15.2°C | 104 mm | 14.7 h | |
| June | 10.0°C | 19.8°C | 89 mm | 15.5 h | |
| July | 11.7°C | 22.2°C | 78 mm | 15.2 h | |
| August | 11.3°C | 21.7°C | 78 mm | 13.9 h | |
| September | 7.3°C | 17.5°C | 65 mm | 12.3 h | |
| October | 3.2°C | 12.6°C | 74 mm | 10.7 h | ❄ |
| November | −1.7°C | 6.1°C | 100 mm | 9.2 h | ❄ |
| December | −5.9°C | 1.8°C | 73 mm | 8.5 h | ❄ |