Tailwind Atlas

EuroVelo 5 - Via Romea Francigena, stage 22: Valmontone → Frosinone

On stage 22 (Valmontone → Frosinone, 104 km) the best month is October: 74% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.1 km/h on average; ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← EuroVelo 5 - Via Romea Francigena (Whole route)

104 kmLength
OctoberBest months
eitherBetter direction in the best month
0.1 km/hAverage tailwind in the best month
74%Dry days with 10–30 °C
June · 57%Best summer month
Start: Valmontone · Finish: Frosinone · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January41%28%11310 °C0%49%9.5 †
February53%28%11511 °C0%32%10.5 †
March62%32%12414 °C0%15%11.8
April64%36%9917 °C0%1%13.3
May63%37%10221 °C0%0%14.5
June57%28%6426 °C16%0%15.2
July41%18%3629 °C43%0%14.9
August42%20%3530 °C42%0%13.8
September68%28%10525 °C5%0%12.4
October74%26%12320 °C0%0%11.0
November64%32%17915 °C0%7%9.8 †
December55%24%12811 °C0%30%9.2 †

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 Valmontone → Frosinone, km/hHeadwind > 15 km/h, Valmontone → FrosinoneHeadwind > 15 km/h, Frosinone → ValmontoneBetter way
January−0.30%0%either
February−0.20%0%either
March0.00%0%either
April+0.20%0%either
May+0.30%0%either
June+0.40%0%either
July+0.50%0%either
August+0.50%0%either
September+0.30%0%either
October+0.10%0%either
November−0.20%0%either
December−0.30%0%either

Along the route (sections of about 25 km)

kmHeadingTailwind in October, km/h
2,583–2,608E+0.9
2,608–2,631SE−0.8
2,631–2,656W−0.5
2,656–2,681W+0.2
2,681–2,687N+2.0

Other stages

  1. Canterbury → Audruicq 114 km
  2. Audruicq → Lens 115 km
  3. Lens → Lessines 121 km
  4. Lessines → Wavre 125 km
  5. Wavre → Marche-en-Famenne 126 km
  6. Marche-en-Famenne → Eischen 132 km
  7. Eischen → Saarlouis 120 km
  8. Saarlouis → Saverne 147 km
  9. Saverne → Châtenois 120 km
  10. Châtenois → Mulhouse 116 km
  11. Mulhouse → Luzern 113 km
  12. Luzern → Airolo 117 km
  13. Airolo → Como 139 km
  14. Como → Pavia 121 km
  15. Pavia → Fidenza 128 km
  16. Fidenza → Sarzana 133 km
  17. Sarzana → San Miniato Basso 121 km
  18. San Miniato Basso → Siena 96 km
  19. Siena → Acquapendente 121 km
  20. Acquapendente → Campagnano di Roma 120 km
  21. Campagnano di Roma → Valmontone 93 km
  22. Valmontone → Frosinone 104 km
  23. Frosinone → Cassino 119 km
  24. Cassino → Benevento 121 km
  25. Benevento → Venosa 133 km
  26. Venosa → Castellaneta 122 km
  27. 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.