Route des Grandes Alpes à vélo - Tracé principal, stage 5: Péone → Nice
On stage 5 (Péone → Nice, 168 km) the best month is October: 74% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.8 km/h on average; ERA5 2006–2025, 9:00–18:00).
← Route des Grandes Alpes à vélo - Tracé principal (Whole route)
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 23% | 15% | 71 | 7 °C | 0% | 76% | 9.2 † |
| February | 33% | 20% | 67 | 8 °C | 0% | 66% | 10.4 † |
| March | 50% | 25% | 90 | 10 °C | 0% | 44% | 11.8 |
| April | 56% | 40% | 103 | 14 °C | 0% | 17% | 13.4 |
| May | 52% | 48% | 114 | 17 °C | 0% | 3% | 14.7 |
| June | 54% | 46% | 99 | 21 °C | 0% | 0% | 15.5 |
| July | 62% | 37% | 60 | 24 °C | 1% | 0% | 15.2 |
| August | 64% | 35% | 58 | 23 °C | 2% | 0% | 14.0 |
| September | 69% | 31% | 73 | 20 °C | 0% | 0% | 12.4 |
| October | 74% | 24% | 109 | 16 °C | 0% | 5% | 10.9 † |
| November | 53% | 22% | 130 | 11 °C | 0% | 38% | 9.6 † |
| December | 28% | 17% | 90 | 8 °C | 0% | 70% | 8.9 † |
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 Péone → Nice, km/h | Headwind > 15 km/h, Péone → Nice | Headwind > 15 km/h, Nice → Péone | Better way |
|---|---|---|---|---|
| January | +1.0 | 0% | 1% | either |
| February | +0.2 | 0% | 1% | either |
| March | −0.4 | 1% | 1% | either |
| April | −1.5 | 1% | 1% | either |
| May | −1.7 | 1% | 0% | either |
| June | −1.8 | 1% | 0% | either |
| July | −1.6 | 0% | 0% | either |
| August | −1.7 | 0% | 0% | either |
| September | −1.6 | 0% | 0% | either |
| October | −0.8 | 0% | 1% | either |
| November | +0.5 | 0% | 1% | either |
| December | +1.1 | 0% | 1% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 528–553 | E | 0.0 |
| 553–578 | E | −0.2 |
| 578–604 | SE | −1.0 |
| 604–629 | SE | −1.5 |
| 629–654 | S | −1.7 |
| 654–679 | SW | −1.3 |
| 679–696 | SW | +0.4 |
Other stages
- Thonon-les-Bains → Beaufort 128 km
- Beaufort → Modane 151 km
- Modane → Guillestre 134 km
- Guillestre → Péone 116 km
- Péone → Nice 168 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.