Aida, stage 9: Cormons → Treviso
On stage 9 (Cormons → Treviso, 7 km) the best month is October: 76% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.5 km/h on average; ERA5 2006–2025, 9:00–18:00).
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 16% | 16% | 88 | 7 °C | 0% | 82% | 9.0 † |
| February | 40% | 22% | 99 | 9 °C | 0% | 55% | 10.3 † |
| March | 65% | 24% | 111 | 13 °C | 0% | 18% | 11.8 |
| April | 69% | 30% | 108 | 18 °C | 0% | 2% | 13.5 |
| May | 59% | 40% | 158 | 21 °C | 1% | 0% | 14.9 |
| June | 52% | 34% | 102 | 26 °C | 16% | 0% | 15.7 |
| July | 43% | 26% | 85 | 28 °C | 34% | 0% | 15.4 |
| August | 45% | 25% | 101 | 28 °C | 33% | 0% | 14.1 |
| September | 71% | 27% | 142 | 23 °C | 2% | 0% | 12.5 |
| October | 76% | 24% | 143 | 18 °C | 0% | 0% | 10.8 † |
| November | 59% | 24% | 164 | 12 °C | 0% | 22% | 9.4 † |
| December | 23% | 17% | 105 | 8 °C | 0% | 73% | 8.7 † |
Best months are all months within 3 percentage points of the best one. † less than 11 hours of daylight — long stages get tight.
Wind by month
| Month | Wind Cormons → Treviso, km/h | Headwind > 15 km/h, Cormons → Treviso | Headwind > 15 km/h, Treviso → Cormons | Better way |
|---|---|---|---|---|
| January | −0.3 | 1% | 0% | either |
| February | +0.3 | 2% | 1% | either |
| March | +0.8 | 2% | 1% | either |
| April | +1.0 | 1% | 1% | either |
| May | +0.8 | 0% | 0% | either |
| June | +0.5 | 0% | 0% | either |
| July | +0.4 | 0% | 0% | either |
| August | +0.5 | 0% | 0% | either |
| September | +0.7 | 0% | 0% | either |
| October | +0.5 | 1% | 1% | either |
| November | +0.1 | 1% | 1% | either |
| December | −0.6 | 1% | 0% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 985–986 | NE | −1.4 |
| 986–988 | NW | +1.8 |
| 988–990 | W | +1.2 |
| 990–992 | S | +0.4 |
Other stages
- Susa → Turin 114 km
- Turin → Novara 122 km
- Novara → Treviglio 123 km
- Treviglio → Verona 148 km
- Verona → Padua 124 km
- Padua → Oderzo 122 km
- Oderzo → Udine 114 km
- Udine → Cormons 80 km
- Cormons → Treviso 7 km
How to read the numbers
Wind is the 10 m wind of a 25-km grid cell, daytime hours 9:00–18:00 local solar time; at saddle height in a sheltered valley it is weaker, on a coast or ridge stronger. A positive value is a tailwind. ERA5 slightly over-counts days with ≥ 1 mm of rain (by about 5–7 percentage points) and underestimates daily highs by 1–2 °C. Good day = less than 1 mm of rain between 9:00 and 18:00 (riding hours, local solar time) and a high between 10 and 30 °C; rain at night or in the evening does not spoil it.