Véloroute Toulouse - Fos: which way and when to ride
The best month for Véloroute Toulouse - Fos is October: 75% of days were dry with highs of 10–30 °C. In October the wind barely favours either direction — on average 0.8 km/h along the route (ERA5 2006–2025, daytime 9:00–18:00).
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 30% | 28% | 94 | 8 °C | 0% | 63% | 9.3 † |
| February | 47% | 25% | 78 | 10 °C | 0% | 45% | 10.5 † |
| March | 55% | 34% | 96 | 13 °C | 0% | 29% | 11.8 |
| April | 58% | 39% | 102 | 15 °C | 0% | 12% | 13.3 |
| May | 55% | 44% | 126 | 18 °C | 1% | 4% | 14.7 |
| June | 53% | 41% | 117 | 22 °C | 6% | 0% | 15.3 |
| July | 56% | 33% | 95 | 25 °C | 13% | 0% | 15.1 |
| August | 54% | 31% | 87 | 25 °C | 17% | 0% | 13.9 |
| September | 68% | 27% | 74 | 22 °C | 5% | 0% | 12.4 |
| October | 75% | 22% | 74 | 18 °C | 0% | 4% | 10.9 † |
| November | 53% | 30% | 112 | 12 °C | 0% | 30% | 9.6 † |
| December | 42% | 25% | 82 | 10 °C | 0% | 50% | 9.0 † |
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 Toulouse → near Les, km/h | Headwind > 15 km/h, Toulouse → near Les | Headwind > 15 km/h, near Les → Toulouse | Better way |
|---|---|---|---|---|
| January | −0.9 | 2% | 0% | either |
| February | −0.2 | 2% | 1% | either |
| March | +0.6 | 3% | 1% | either |
| April | +1.5 | 1% | 1% | either |
| May | +1.4 | 1% | 0% | either |
| June | +1.9 | 0% | 0% | either |
| July | +1.9 | 0% | 0% | either |
| August | +1.7 | 0% | 0% | either |
| September | +1.1 | 1% | 0% | either |
| October | +0.8 | 1% | 0% | either |
| November | −0.5 | 2% | 0% | either |
| December | −1.4 | 2% | 0% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 0–6 | S | −0.5 |
| 6–32 | SW | +0.7 |
| 32–57 | SW | +0.2 |
| 57–82 | W | −0.6 |
| 82–108 | S | +2.0 |
| 108–133 | SE | +2.1 |
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.