EuroVelo 5 - Via Romea Francigena, stage 19: Siena → Acquapendente
On stage 19 (Siena → Acquapendente, 121 km) the best month is October: 78% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.2 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 | 35% | 21% | 63 | 9 °C | 0% | 58% | 9.3 † |
| February | 52% | 26% | 76 | 11 °C | 0% | 33% | 10.5 † |
| March | 65% | 28% | 80 | 14 °C | 0% | 14% | 11.8 |
| April | 71% | 29% | 70 | 18 °C | 0% | 1% | 13.3 |
| May | 67% | 32% | 82 | 21 °C | 1% | 0% | 14.6 |
| June | 56% | 23% | 51 | 27 °C | 22% | 0% | 15.3 |
| July | 34% | 14% | 33 | 30 °C | 56% | 0% | 15.1 |
| August | 36% | 18% | 42 | 30 °C | 50% | 0% | 13.9 |
| September | 70% | 24% | 80 | 25 °C | 6% | 0% | 12.4 |
| October | 78% | 21% | 89 | 20 °C | 0% | 1% | 10.9 † |
| November | 68% | 25% | 107 | 14 °C | 0% | 11% | 9.7 † |
| December | 44% | 21% | 78 | 10 °C | 0% | 44% | 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 Siena → Acquapendente, km/h | Headwind > 15 km/h, Siena → Acquapendente | Headwind > 15 km/h, Acquapendente → Siena | Better way |
|---|---|---|---|---|
| January | −1.1 | 2% | 1% | either |
| February | −0.8 | 4% | 1% | either |
| March | −0.7 | 4% | 1% | either |
| April | −0.3 | 3% | 1% | either |
| May | +0.3 | 1% | 0% | either |
| June | +0.6 | 1% | 0% | either |
| July | +1.6 | 1% | 0% | either |
| August | +1.1 | 1% | 0% | either |
| September | −0.1 | 1% | 0% | either |
| October | −1.2 | 3% | 1% | either |
| November | −1.8 | 3% | 1% | either |
| December | −1.2 | 3% | 1% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 2,237–2,262 | SE | −1.1 |
| 2,262–2,287 | SE | −1.7 |
| 2,287–2,312 | SE | −1.3 |
| 2,312–2,337 | S | −0.5 |
| 2,337–2,357 | SE | −1.4 |
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.