Tailwind Atlas

EuroVelo 5 - Via Romea Francigena, stage 7: Eischen → Saarlouis

On stage 7 (Eischen → Saarlouis, 120 km) the best month is September: 79% 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).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← EuroVelo 5 - Via Romea Francigena (Whole route)

120 kmLength
SeptemberBest months
eitherBetter direction in the best month
1.2 km/hAverage tailwind in the best month
79%Dry days with 10–30 °C
August · 69%Best summer month
Start: Eischen · Finish: Saarlouis · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January4%28%824 °C0%91%8.6 †
February13%25%656 °C0%82%10.0 †
March39%28%6710 °C0%51%11.7
April64%26%5415 °C0%20%13.7
May69%30%7618 °C0%3%15.3
June69%27%7422 °C4%0%16.3
July67%24%6824 °C10%0%15.9
August69%23%7023 °C8%0%14.4
September79%21%6919 °C1%0%12.5
October66%23%7714 °C0%14%10.7 †
November22%28%778 °C0%67%9.0 †
December6%28%905 °C0%88%8.2 †

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 Eischen → Saarlouis, km/hHeadwind > 15 km/h, Eischen → SaarlouisHeadwind > 15 km/h, Saarlouis → EischenBetter way
January+1.62%8%either
February+0.53%7%either
March+1.04%9%either
April+0.73%5%either
May+2.01%7%either
June+2.71%6%Eischen → Saarlouis
July+4.41%8%Eischen → Saarlouis
August+3.31%5%Eischen → Saarlouis
September+1.21%4%either
October−0.43%5%either
November0.01%5%either
December+0.92%6%either

Along the route (sections of about 25 km)

kmHeadingTailwind in September, km/h
742–767SE+1.1
767–792SE+1.2
792–817SE+1.3
817–842E+1.8
842–862SE+0.7

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.