Tailwind Atlas

La Vélidéale, stage 3: Ruffec → Niort

On stage 3 (Ruffec → Niort, 114 km) the best month is October: 76% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.6 km/h on average; ERA5 2006–2025, 9:00–18:00).

ERA5 2006–2025 · OpenStreetMap · Methodology and sources

← La Vélidéale (Whole route)

114 kmLength
April, September–October (peak October)Best months
eitherBetter direction in the best month
0.6 km/hAverage tailwind in the best month
76%Dry days with 10–30 °C
August · 71%Best summer month
Start: Ruffec · Finish: Niort · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January25%26%869 °C0%58%9.0 †
February44%24%7110 °C0%40%10.3 †
March61%27%7614 °C0%16%11.8
April74%25%6517 °C0%3%13.5
May70%29%7920 °C1%0%14.9
June68%23%7224 °C9%0%15.8
July71%14%4026 °C16%0%15.4
August71%12%4126 °C17%0%14.1
September75%19%5423 °C6%0%12.5
October76%23%8618 °C0%1%10.8 †
November54%29%9113 °C0%21%9.4 †
December33%24%8910 °C0%49%8.6 †

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 Ruffec → Niort, km/hHeadwind > 15 km/h, Ruffec → NiortHeadwind > 15 km/h, Niort → RuffecBetter way
January−0.78%4%either
February−1.110%5%either
March−1.411%5%either
April−1.07%4%either
May−2.79%3%Niort → Ruffec
June−2.46%2%Niort → Ruffec
July−4.18%1%Niort → Ruffec
August−3.67%1%Niort → Ruffec
September−1.56%2%either
October+0.64%5%either
November−0.17%5%either
December+0.18%5%either

Along the route (sections of about 25 km)

kmHeadingTailwind in October, km/h
236–262W−0.2
262–288NW+1.0
288–313N+1.6
313–338W+0.3
338–350NW+0.7

Other stages

  1. Royère-de-Vassivière → Aixe-sur-Vienne 100 km
  2. Aixe-sur-Vienne → Ruffec 136 km
  3. Ruffec → Niort 114 km
  4. Niort → Nueil-les-Aubiers 104 km
  5. Nueil-les-Aubiers → Nantes 132 km
  6. Nantes → Saint-Nazaire 88 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.