Véloroute du Nord, stage 3: Beauvais → Cergy-Pontoise
On stage 3 (Beauvais → Cergy-Pontoise, 124 km) the best month is September: 80% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.2 km/h on average; ERA5 2006–2025, 9:00–18:00).
← Véloroute du Nord (Whole route)
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 13% | 23% | 62 | 7 °C | 0% | 78% | 8.6 † |
| February | 27% | 23% | 53 | 8 °C | 0% | 63% | 10.1 † |
| March | 52% | 26% | 56 | 12 °C | 0% | 34% | 11.7 |
| April | 71% | 24% | 47 | 15 °C | 0% | 9% | 13.7 |
| May | 72% | 28% | 65 | 18 °C | 0% | 1% | 15.3 |
| June | 73% | 23% | 59 | 22 °C | 5% | 0% | 16.2 |
| July | 73% | 19% | 53 | 24 °C | 9% | 0% | 15.8 |
| August | 71% | 21% | 60 | 24 °C | 8% | 0% | 14.4 |
| September | 80% | 18% | 44 | 21 °C | 2% | 0% | 12.5 |
| October | 75% | 23% | 69 | 16 °C | 0% | 3% | 10.7 † |
| November | 45% | 23% | 63 | 11 °C | 0% | 40% | 9.0 † |
| December | 19% | 25% | 73 | 8 °C | 0% | 69% | 8.2 † |
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
| Month | Wind Beauvais → Cergy-Pontoise, km/h | Headwind > 15 km/h, Beauvais → Cergy-Pontoise | Headwind > 15 km/h, Cergy-Pontoise → Beauvais | Better way |
|---|---|---|---|---|
| January | −2.0 | 15% | 7% | Cergy-Pontoise → Beauvais |
| February | −1.4 | 14% | 11% | either |
| March | −0.2 | 12% | 11% | either |
| April | +0.6 | 8% | 9% | either |
| May | +0.8 | 8% | 9% | either |
| June | +0.6 | 7% | 7% | either |
| July | −0.2 | 9% | 7% | either |
| August | −0.6 | 8% | 7% | either |
| September | −0.2 | 8% | 7% | either |
| October | −1.7 | 11% | 6% | either |
| November | −2.4 | 14% | 5% | Cergy-Pontoise → Beauvais |
| December | −2.6 | 16% | 7% | Cergy-Pontoise → Beauvais |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in September, km/h |
|---|---|---|
| 245–270 | E | +2.7 |
| 270–294 | SE | +2.0 |
| 294–319 | S | −1.4 |
| 319–345 | W | −2.6 |
| 345–369 | SW | −2.1 |
Other stages
- Halluin → Dainville 80 km
- Dainville → Beauvais 120 km
- Beauvais → Cergy-Pontoise 124 km
- Cergy-Pontoise → Paris 70 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.