EuroVelo 5 - Via Romea Francigena, stage 18: San Miniato Basso → Siena
On stage 18 (San Miniato Basso → Siena, 96 km) the best month is October: 80% 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).
← EuroVelo 5 - Via Romea Francigena (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 | 36% | 22% | 72 | 9 °C | 0% | 54% | 9.3 † |
| February | 53% | 26% | 86 | 11 °C | 0% | 30% | 10.4 † |
| March | 68% | 26% | 82 | 14 °C | 0% | 12% | 11.8 |
| April | 74% | 26% | 70 | 18 °C | 0% | 1% | 13.4 |
| May | 71% | 28% | 83 | 22 °C | 1% | 0% | 14.7 |
| June | 60% | 20% | 46 | 27 °C | 20% | 0% | 15.4 |
| July | 37% | 11% | 33 | 30 °C | 55% | 0% | 15.1 |
| August | 37% | 16% | 42 | 30 °C | 51% | 0% | 14.0 |
| September | 69% | 22% | 93 | 25 °C | 9% | 0% | 12.4 |
| October | 80% | 20% | 103 | 20 °C | 0% | 0% | 10.9 † |
| November | 67% | 26% | 120 | 14 °C | 0% | 10% | 9.6 † |
| December | 44% | 23% | 88 | 10 °C | 0% | 41% | 9.0 † |
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 San Miniato Basso → Siena, km/h | Headwind > 15 km/h, San Miniato Basso → Siena | Headwind > 15 km/h, Siena → San Miniato Basso | Better way |
|---|---|---|---|---|
| January | −1.1 | 1% | 0% | either |
| February | −0.4 | 1% | 0% | either |
| March | 0.0 | 1% | 0% | either |
| April | +0.4 | 1% | 0% | either |
| May | +1.2 | 0% | 0% | either |
| June | +1.7 | 0% | 0% | either |
| July | +2.5 | 0% | 0% | San Miniato Basso → Siena |
| August | +1.9 | 0% | 0% | either |
| September | +0.5 | 0% | 0% | either |
| October | −0.8 | 1% | 0% | either |
| November | −1.5 | 1% | 0% | either |
| December | −1.3 | 1% | 0% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 2,141–2,166 | SE | −0.1 |
| 2,166–2,191 | SE | −0.7 |
| 2,191–2,217 | SE | −0.7 |
| 2,217–2,237 | SE | −1.7 |
Other stages
- Canterbury → Audruicq 114 km
- Audruicq → Lens 115 km
- Lens → Lessines 121 km
- Lessines → Wavre 125 km
- Wavre → Marche-en-Famenne 126 km
- Marche-en-Famenne → Eischen 132 km
- Eischen → Saarlouis 120 km
- Saarlouis → Saverne 147 km
- Saverne → Châtenois 120 km
- Châtenois → Mulhouse 116 km
- Mulhouse → Luzern 113 km
- Luzern → Airolo 117 km
- Airolo → Como 139 km
- Como → Pavia 121 km
- Pavia → Fidenza 128 km
- Fidenza → Sarzana 133 km
- Sarzana → San Miniato Basso 121 km
- San Miniato Basso → Siena 96 km
- Siena → Acquapendente 121 km
- Acquapendente → Campagnano di Roma 120 km
- Campagnano di Roma → Valmontone 93 km
- Valmontone → Frosinone 104 km
- Frosinone → Cassino 119 km
- Cassino → Benevento 121 km
- Benevento → Venosa 133 km
- Venosa → Castellaneta 122 km
- Castellaneta → Brindisi 122 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.