Tailwind Atlas

EuroVelo 6 - Atlantic-Black Sea - part France: which way and when to ride

The best month for EuroVelo 6 - Atlantic-Black Sea - part France is September: 77% of days were dry with highs of 10–30 °C. In September the wind barely favours either direction — on average 1.2 km/h along the route (ERA5 2006–2025, daytime 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

1,209 kmLength
September–October (peak September)Best months
eitherBetter direction in the best month
1.2 km/hAverage tailwind in the best month
77%Dry days with 10–30 °C
June · 66%Best summer month
Start: Saint-Brevin-les-Pins · Finish: Basel · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January17%25%777 °C0%73%8.9 †
February33%24%629 °C0%56%10.2 †
March55%27%7012 °C0%27%11.8
April72%25%6116 °C0%7%13.6
May69%30%8420 °C1%1%15.1
June66%24%7124 °C10%0%15.9
July63%20%5826 °C19%0%15.6
August64%18%6025 °C19%0%14.2
September77%19%6322 °C5%0%12.5
October75%22%8217 °C0%4%10.8 †
November46%26%8111 °C0%37%9.2 †
December21%27%878 °C0%66%8.5 †

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 Saint-Brevin-les-Pins → Basel, km/hHeadwind > 15 km/h, Saint-Brevin-les-Pins → BaselHeadwind > 15 km/h, Basel → Saint-Brevin-les-PinsBetter way
January+2.84%14%Saint-Brevin-les-Pins → Basel
February+2.45%14%Saint-Brevin-les-Pins → Basel
March+1.86%14%either
April+0.46%8%either
May+1.95%10%either
June+1.84%8%either
July+3.62%10%Saint-Brevin-les-Pins → Basel
August+3.41%9%Saint-Brevin-les-Pins → Basel
September+1.24%8%either
October+0.94%8%either
November+2.23%12%Saint-Brevin-les-Pins → Basel
December+2.94%14%Saint-Brevin-les-Pins → Basel

Stages

The route is split into 10 stages of about 100–150 km between towns; each stage has its own page.

StagekmBest monthTailwind Saint-Brevin-les-Pins → Basel in September, km/h
1. Saint-Brevin-les-Pins → Saint-Florent-le-Vieil118September+2.5
2. Saint-Florent-le-Vieil → Saumur109September+1.9
3. Saumur → Amboise112September+1.6
4. Amboise → Orléans104September+1.3
5. Orléans → Cosne-Cours-sur-Loire122September+1.4
6. Cosne-Cours-sur-Loire → Decize114September+1.1
7. Decize → Montceau-les-Mines130October+1.4
8. Montceau-les-Mines → Seurre112October+0.2
9. Seurre → Besançon102October+0.7
10. Besançon → Basel185September+0.4

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.

OpenStreetMap · Waymarked Trails