Tailwind Atlas

Véloroute du Nord: which way and when to ride

The best month for Véloroute du Nord is September: 80% 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

394 kmLength
SeptemberBest months
eitherBetter direction in the best month
1.2 km/hAverage tailwind in the best month
80%Dry days with 10–30 °C
June · 73%Best summer month
Start: Halluin · Finish: Paris · Route geometry: OpenStreetMap / Waymarked Trails

Weather by month

MonthGood daysRain days ≥ 1 mmRain, mmAvg highDays ≥ 30 °CDays < 10 °CDaylight, h
January13%24%647 °C0%78%8.6 †
February25%24%548 °C0%65%10.0 †
March51%25%5711 °C0%37%11.7
April70%23%4515 °C0%11%13.7
May72%28%6618 °C0%1%15.3
June73%23%6122 °C3%0%16.3
July73%20%5524 °C7%0%15.9
August71%23%6223 °C7%0%14.4
September80%19%4720 °C2%0%12.5
October75%22%7016 °C0%4%10.6 †
November44%24%6411 °C0%40%9.0 †
December19%24%728 °C0%70%8.1 †

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 Halluin → Paris, km/hHeadwind > 15 km/h, Halluin → ParisHeadwind > 15 km/h, Paris → HalluinBetter way
January−4.020%6%Paris → Halluin
February−3.019%9%Paris → Halluin
March−0.915%11%either
April+0.710%11%either
May+0.710%10%either
June+0.29%8%either
July−1.311%6%either
August−1.810%5%either
September−1.211%6%either
October−3.416%5%Paris → Halluin
November−4.521%5%Paris → Halluin
December−4.922%5%Paris → Halluin

Stages

The route is split into 4 stages of about 100–150 km between towns; each stage has its own page.

StagekmBest monthTailwind Halluin → Paris in September, km/h
1. Halluin → Dainville80September−3.1
2. Dainville → Beauvais120September−2.2
3. Beauvais → Cergy-Pontoise124September−0.2
4. Cergy-Pontoise → Paris70September+1.1

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