Tailwind Atlas

Ciclovia Francigena Italia, stage 6: Acquapendente → Prati

On stage 6 (Acquapendente → Prati, 163 km) the best month is October: 78% of days were dry with highs of 10–30 °C; the wind barely favours either direction (1.3 km/h on average; ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← Ciclovia Francigena Italia (Whole route)

163 kmLength
OctoberBest months
eitherBetter direction in the best month
1.3 km/hAverage tailwind in the best month
78%Dry days with 10–30 °C
June · 53%Best summer month
Start: Acquapendente · Finish: Prati · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January51%24%8011 °C0%36%9.4 †
February60%26%9112 °C0%21%10.5 †
March68%28%9615 °C0%8%11.8
April73%27%7119 °C0%0%13.3
May69%30%8222 °C2%0%14.6
June53%20%4928 °C28%0%15.3
July27%13%3231 °C64%0%15.0
August27%17%3531 °C62%0%13.9
September68%23%9426 °C10%0%12.4
October78%22%10621 °C0%0%11.0 †
November69%28%13316 °C0%5%9.7 †
December58%23%9712 °C0%24%9.1 †

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

MonthWind Acquapendente → Prati, km/hHeadwind > 15 km/h, Acquapendente → PratiHeadwind > 15 km/h, Prati → AcquapendenteBetter way
January0.05%4%either
February−0.37%5%either
March−1.07%5%either
April−1.45%3%either
May−1.24%2%either
June−1.23%1%either
July−0.73%1%either
August−0.73%1%either
September−1.04%2%either
October−1.35%3%either
November−1.46%3%either
December+0.35%4%either

Along the route (sections of about 25 km)

kmHeadingTailwind in October, km/h
680–705SE−1.0
705–730S−1.0
730–756S−2.0
756–781SE−0.9
781–806SE−1.1
806–832SE−1.7
832–842SW−2.4
842–843NE+2.4

Other stages

  1. Vercelli → Piacenza 153 km
  2. Piacenza → Pontremoli 144 km
  3. Pontremoli → Lucca 129 km
  4. Lucca → Siena 136 km
  5. Siena → Acquapendente 121 km
  6. Acquapendente → Prati 163 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.