Tailwind Atlas

La Vallée du Lot à vélo, stage 1: Damazan → Prayssac

On stage 1 (Damazan → Prayssac, 132 km) the best month is October: 78% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.5 km/h on average; ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← La Vallée du Lot à vélo (Whole route)

132 kmLength
OctoberBest months
eitherBetter direction in the best month
0.5 km/hAverage tailwind in the best month
78%Dry days with 10–30 °C
June · 60%Best summer month
Start: Damazan · Finish: Prayssac · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January35%24%759 °C0%51%9.2 †
February55%22%5512 °C0%29%10.4 †
March67%26%6615 °C0%11%11.8
April72%27%7118 °C0%1%13.4
May70%27%8021 °C3%0%14.8
June60%23%7526 °C18%0%15.5
July55%12%4328 °C36%0%15.2
August55%11%4728 °C36%0%14.0
September66%18%5625 °C17%0%12.4
October78%20%6520 °C2%1%10.9 †
November62%26%7914 °C0%15%9.5 †
December44%22%6811 °C0%41%8.8 †

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 Damazan → Prayssac, km/hHeadwind > 15 km/h, Damazan → PrayssacHeadwind > 15 km/h, Prayssac → DamazanBetter way
January+2.32%9%Damazan → Prayssac
February+2.13%10%Damazan → Prayssac
March+1.94%12%either
April+1.03%7%either
May+1.92%7%either
June+1.71%4%either
July+2.11%4%Damazan → Prayssac
August+1.91%3%either
September+1.01%5%either
October+0.52%5%either
November+1.73%8%either
December+1.82%9%either

Along the route (sections of about 25 km)

kmHeadingTailwind in October, km/h
0–14W−0.7
14–39NE+0.9
39–64E+0.8
64–89E+0.4
89–114NE+0.9
114–132E−0.1

Other stages

  1. Damazan → Prayssac 132 km
  2. Prayssac → Decazeville 150 km
  3. Decazeville → La Canourgue 129 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.