Tailwind Atlas

La Vallée du Lot à vélo: which way and when to ride

The best month for La Vallée du Lot à vélo is October: 77% of days were dry with highs of 10–30 °C. In October the wind barely favours either direction — on average 0.1 km/h along the route (ERA5 2006–2025, daytime 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

411 kmLength
OctoberBest months
eitherBetter direction in the best month
0.1 km/hAverage tailwind in the best month
77%Dry days with 10–30 °C
June · 62%Best summer month
Start: Damazan · Finish: La Canourgue · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January25%27%888 °C0%66%9.2 †
February45%24%6510 °C0%45%10.4 †
March58%29%8213 °C0%23%11.8
April69%29%8117 °C0%6%13.4
May68%31%9320 °C1%1%14.8
June62%25%8324 °C13%0%15.5
July60%16%5627 °C26%0%15.2
August60%15%6027 °C27%0%14.0
September71%20%6723 °C9%0%12.4
October77%21%7919 °C1%3%10.9 †
November53%28%9413 °C0%28%9.5 †
December34%25%859 °C0%55%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 → La Canourgue, km/hHeadwind > 15 km/h, Damazan → La CanourgueHeadwind > 15 km/h, La Canourgue → DamazanBetter way
January+2.43%9%Damazan → La Canourgue
February+2.34%10%Damazan → La Canourgue
March+2.16%11%Damazan → La Canourgue
April+1.15%6%either
May+2.73%8%Damazan → La Canourgue
June+2.61%4%Damazan → La Canourgue
July+3.81%5%Damazan → La Canourgue
August+3.41%4%Damazan → La Canourgue
September+1.72%4%either
October−0.15%4%either
November+1.34%7%either
December+1.53%9%either

Stages

The route is split into 3 stages of about 100–150 km between towns; each stage has its own page.

StagekmBest monthTailwind Damazan → La Canourgue in October, km/h
1. Damazan → Prayssac132October+0.5
2. Prayssac → Decazeville150October0.0
3. Decazeville → La Canourgue129September−0.6

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